working genetics prototype

we're ready for tenants
remove log window & hide demo by default
2025-12-19 21:41:58 +08:00 · 2025-12-19 13:48:48 +08:00 · 2025-12-19 13:30:27 +08:00 · 2025-12-19 13:08:51 +08:00 · 2025-12-19 12:31:15 +08:00
31 changed files with 313 additions and 3220 deletions
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module edgaru089.ink/go/gl01

-go 1.17
+go 1.25

 require (
 	github.com/aquilax/go-perlin v1.1.0
--- a/internal/entity/entities/player.go
+++ b/internal/entity/entities/player.go
@@ -1,32 +0,0 @@
-package entities
-
-import (
-	"time"
-
-	"edgaru089.ink/go/gl01/internal/entity"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-type PlayerBehaviour struct{}
-
-func init() {
-	entity.RegisterEntityBehaviour(PlayerBehaviour{})
-}
-
-func (PlayerBehaviour) Name() string { return "player" }
-
-func (PlayerBehaviour) Hitbox(pos itype.Vec3d, dataset itype.Dataset) []itype.Boxd {
-	return []itype.Boxd{{
-		OffX: -0.3, OffY: 0, OffZ: -0.3,
-		SizeX: 0.6, SizeY: 1.8, SizeZ: 0.6,
-	}}
-}
-
-func (PlayerBehaviour) EyeHeight(pos itype.Vec3d, dataset itype.Dataset) float64 {
-	return 1.65
-}
-
-func (PlayerBehaviour) Update(pos itype.Vec3d, dataset itype.Dataset, world *world.World, deltaTime time.Duration) {
-
-}
--- a/internal/entity/entity.go
+++ b/internal/entity/entity.go
@@ -1,135 +0,0 @@
-package entity
-
-import (
-	"time"
-
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-// EntityBehaviour describes the behaviour of a type of entity with the same Name.
-// It should hold no data of its own.
-type EntityBehaviour interface {
-	// Name returns the type Name of the behaviour.
-	Name() string
-
-	// Hitbox gets the hitbox(s) of the entity.
-	//
-	// The hitbox is in entity-local coordinates, originating from the position.
-	Hitbox(pos itype.Vec3d, dataset itype.Dataset) []itype.Boxd
-
-	// EyeHeight gets the height of the eye of the entity.
-	EyeHeight(pos itype.Vec3d, dataset itype.Dataset) float64
-
-	// Update is called on every frame.
-	// It should be used to update the behaviour of the entity.
-	Update(pos itype.Vec3d, dataset itype.Dataset, world *world.World, deltaTime time.Duration)
-}
-
-var behaviour = make(map[string]EntityBehaviour)
-
-// RegisterEntityBehaviour registers behaviour with the name of b.Name().
-//
-// If the name is already taken, false is returned and nothing is done.
-// Otherwise, true is returned and the entity is registered.
-func RegisterEntityBehaviour(b EntityBehaviour) bool {
-	if _, ok := behaviour[b.Name()]; ok {
-		return false
-	}
-
-	behaviour[b.Name()] = b
-	return true
-}
-
-// Entity is a struct holding a Behaviour, a Position and a Speed.
-type Entity struct {
-	b          EntityBehaviour
-	pos, speed itype.Vec3d // pos should have a origin of the **center of the bottom** of the hitbox
-	ds         itype.Dataset
-
-	name string // a shortcut to b.Name(), the typename
-
-	// physics stuff
-	onGround bool
-	worldbox []itype.Boxd
-}
-
-func NewEntity(typename string, pos itype.Vec3d) *Entity {
-	var b EntityBehaviour
-	var ok bool
-	if b, ok = behaviour[typename]; !ok {
-		return nil
-	}
-	return &Entity{
-		b:    b,
-		pos:  pos,
-		name: typename,
-		ds:   make(itype.Dataset),
-	}
-}
-
-func (e *Entity) Position() itype.Vec3d {
-	return e.pos
-}
-
-func (e *Entity) SetPosition(pos itype.Vec3d) {
-	e.pos = pos
-}
-
-func (e *Entity) Speed() itype.Vec3d {
-	return e.speed
-}
-
-func (e *Entity) SetSpeed(speed itype.Vec3d) {
-	e.speed = speed
-}
-
-func (e *Entity) Hitbox() []itype.Boxd {
-	return e.b.Hitbox(e.pos, e.ds)
-}
-
-func (e *Entity) Accelerate(x, y, z float64) {
-	e.speed[0] += x
-	e.speed[1] += y
-	e.speed[2] += z
-	/*vec := itype.Vec3d{x, y, z}
-	e.speed = util.BunnyhopAccelerate(vec, e.speed, vec.Length(), 8)*/
-}
-
-func (e *Entity) OnGround() bool {
-	return e.onGround
-}
-
-func (e *Entity) EyeHeight() float64 {
-	return e.b.EyeHeight(e.pos, e.ds)
-}
-
-func (e *Entity) EyePosition() itype.Vec3d {
-	return e.pos.Addv(0, e.EyeHeight(), 0)
-}
-
-func (e *Entity) DatasetI(name string) int64 {
-	return e.ds[name].(int64)
-}
-func (e *Entity) DatasetF(name string) float64 {
-	return e.ds[name].(float64)
-}
-func (e *Entity) DatasetS(name string) string {
-	return e.ds[name].(string)
-}
-func (e *Entity) DatasetB(name string) bool {
-	return e.ds[name].(bool)
-}
-
-func (e *Entity) SetDatasetI(name string, val int64) {
-	e.ds[name] = val
-}
-func (e *Entity) SetDatasetF(name string, val float64) {
-	e.ds[name] = val
-}
-func (e *Entity) SetDatasetS(name string, val string) {
-	e.ds[name] = val
-}
-func (e *Entity) SetDatasetB(name string, val bool) {
-	e.ds[name] = val
-}
--- a/internal/entity/manager.go
+++ b/internal/entity/manager.go
@@ -1 +0,0 @@
-package entity
--- a/internal/entity/physics.go
+++ b/internal/entity/physics.go
@@ -1,202 +0,0 @@
-package entity
-
-import (
-	"math"
-	"time"
-
-	"edgaru089.ink/go/gl01/internal/util"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-// WorldHitbox returns the hitboxes of the entity, in world coordinates.
-func (e *Entity) WorldHitbox() []itype.Boxd {
-	boxes := e.Hitbox()
-	for i := range boxes {
-		boxes[i] = boxes[i].Offset(e.pos)
-	}
-	return boxes
-}
-
-// MoveEps is a small value used to indicate a tiny amount more than zero.
-const MoveEps = 1e-7
-
-// move attempts to move the entity by delta in the world.
-// It does not change anything in e.
-func (e *Entity) move(delta itype.Vec3d, w *world.World) (finDelta itype.Vec3d, finVelocity itype.Vec3d, onGround bool) {
-
-	// Truncate the delta to [0, 1]
-	for i := 0; i < len(delta); i++ {
-		if math.Abs(delta[i]) > 1 {
-			delta[i] /= math.Abs(delta[i])
-		}
-	}
-
-	// Get the hitboxes and the blocks region covering it
-	hb := e.WorldHitbox()
-	hbmin, hbmax := itype.Vec3d{1000000000, 1000000000, 1000000000}, itype.Vec3d{-1000000000, -1000000000, -1000000000}
-	for _, b := range hb {
-		bmin, bmax := b.MinPoint(), b.MaxPoint()
-		hbmin[0] = util.Mind(hbmin[0], bmin[0])
-		hbmin[1] = util.Mind(hbmin[1], bmin[1])
-		hbmin[2] = util.Mind(hbmin[2], bmin[2])
-		hbmax[0] = util.Maxd(hbmax[0], bmax[0])
-		hbmax[1] = util.Maxd(hbmax[1], bmax[1])
-		hbmax[2] = util.Maxd(hbmax[2], bmax[2])
-	}
-
-	// So this is the region of blocks we should calculate
-	imin, imax := hbmin.Floor().Addv(-1, -1, -1), hbmax.Ceiling().Addv(1, 1, 1)
-
-	finDelta = delta
-	finVelocity = e.speed
-	for x := imin[0]; x <= imax[0]; x++ {
-		for y := imin[1]; y <= imax[1]; y++ {
-			for z := imin[2]; z <= imax[2]; z++ {
-				blockDelta, blockVelocity, blockOnGround := e.moveBlock(hb, delta, itype.Vec3i{x, y, z}, w)
-				finDelta[0] = util.AbsMind(finDelta[0], blockDelta[0])
-				finDelta[1] = util.AbsMind(finDelta[1], blockDelta[1])
-				finDelta[2] = util.AbsMind(finDelta[2], blockDelta[2])
-				finVelocity[0] = util.AbsMind(finVelocity[0], blockVelocity[0])
-				finVelocity[1] = util.AbsMind(finVelocity[1], blockVelocity[1])
-				finVelocity[2] = util.AbsMind(finVelocity[2], blockVelocity[2])
-				onGround = onGround || blockOnGround
-			}
-		}
-	}
-
-	// Y-
-	if delta[1] < 0 {
-		onGround = onGround || e.onGround
-	} else {
-		onGround = false
-	}
-
-	return
-}
-
-// moveBlock simulates moving the entity by delta, and tests collision with the block hibbox.
-func (e *Entity) moveBlock(worldHitbox []itype.Boxd, delta itype.Vec3d, blockCoord itype.Vec3i, w *world.World) (blockDelta itype.Vec3d, finVelocity itype.Vec3d, onGround bool) {
-	blockDelta = delta
-	finVelocity = e.speed
-	onGround = false
-
-	var blockHitbox []itype.Boxd
-	if block := w.Block(blockCoord); block.Id != 0 {
-		blocka := block.Appearance(blockCoord)
-		if !blocka.NotSolid {
-			blockHitbox = w.Block(blockCoord).Appearance(blockCoord).Hitbox
-			for i := range blockHitbox {
-				blockHitbox[i] = blockHitbox[i].Offset(blockCoord.ToFloat64())
-			}
-		}
-	}
-
-	if len(blockHitbox) == 0 {
-		return
-	}
-
-	for _, eb := range worldHitbox {
-		for _, bb := range blockHitbox {
-			// Already intersecting: return
-			if ok, _ := eb.Intersect(bb); ok {
-				continue
-			}
-
-			// X
-			if ok, _ := eb.Offsetv(blockDelta[0], 0, 0).Intersect(bb); ok {
-				if blockDelta[0] > 0 {
-					blockDelta[0] = bb.OffX - (eb.OffX + eb.SizeX) - MoveEps
-					//log.Printf("Hit(X+): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				} else {
-					blockDelta[0] = (bb.OffX + bb.SizeX) - eb.OffX + MoveEps
-					//log.Printf("Hit(X-): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				}
-				finVelocity[0] = 0
-			}
-
-			// Y
-			if ok, _ := eb.Offsetv(0, blockDelta[1], 0).Intersect(bb); ok {
-				if blockDelta[1] > 0 {
-					blockDelta[1] = bb.OffY - (eb.OffY + eb.SizeY) - MoveEps
-					//log.Printf("Hit(Y+): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				} else {
-					onGround = true
-					blockDelta[1] = (bb.OffY + bb.SizeY) - eb.OffY + MoveEps
-					//log.Printf("Hit(Y-): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				}
-				finVelocity[1] = 0
-			}
-
-			// Z
-			if ok, _ := eb.Offsetv(0, 0, blockDelta[2]).Intersect(bb); ok {
-				if blockDelta[2] > 0 {
-					blockDelta[2] = bb.OffZ - (eb.OffZ + eb.SizeZ) - MoveEps
-					//log.Printf("Hit(Z+): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				} else {
-					blockDelta[2] = (bb.OffZ + bb.SizeZ) - eb.OffZ + MoveEps
-					//log.Printf("Hit(Z-): On (X%d,Y%d,Z%d), delta=%v\n", blockCoord[0], blockCoord[1], blockCoord[2], blockDelta)
-				}
-				finVelocity[2] = 0
-			}
-		}
-	}
-
-	return
-}
-
-const gravity = 26
-const deaclc = 28
-const maxspeed = 8
-
-func (e *Entity) Update(world *world.World, deltaTime time.Duration) {
-
-	/*
-		delta, vec, onGround := e.move(itype.Vec3d{e.speed[0] * deltaTime.Seconds()}, world)
-		e.pos = e.pos.Add(delta)
-		e.speed = vec
-		delta, vec, onGround = e.move(e.speed.Multiply(deltaTime.Seconds()), world)
-		e.pos = e.pos.Add(delta)
-		e.speed = vec
-		delta, vec, onGround = e.move(e.speed.Multiply(deltaTime.Seconds()), world)
-		e.pos = e.pos.Add(delta)
-		e.speed = vec
-
-		e.onGround = onGround
-	*/
-
-	var deltaSpeed itype.Vec3d
-	if e.onGround {
-		speed := math.Sqrt(e.speed[0]*e.speed[0] + e.speed[2]*e.speed[2])
-		if speed > MoveEps {
-			decrease := deaclc * deltaTime.Seconds()
-			factor := util.Maxd(util.Mind(speed-decrease, 6), 0) / speed
-
-			deltaSpeed[0] = -e.speed[0] * (1 - factor)
-			deltaSpeed[2] = -e.speed[2] * (1 - factor)
-		} else {
-			e.speed[0] = 0
-			e.speed[2] = 0
-		}
-	}
-	deltaSpeed[1] = -gravity * deltaTime.Seconds()
-
-	delta := e.speed.Multiply(deltaTime.Seconds()).Add(deltaSpeed.Multiply(deltaTime.Seconds() / 2))
-	e.speed = e.speed.Add(deltaSpeed)
-
-	findelta, vec, onGround := e.move(delta, world)
-	e.pos = e.pos.Add(findelta)
-	e.speed = vec
-	e.onGround = onGround
-
-	if !e.onGround {
-		vecXZ := itype.Vec2d{e.speed[0], e.speed[2]}
-		if vecXZ.Length() > maxspeed {
-			vecXZ = vecXZ.Normalize().Multiply(maxspeed)
-		}
-		e.speed[0] = vecXZ[0]
-		e.speed[2] = vecXZ[1]
-	}
-
-	e.b.Update(e.pos, e.ds, world, deltaTime)
-}
--- a/internal/entity/physics.go.new
+++ b/internal/entity/physics.go.new
@@ -1,233 +0,0 @@
-package entity
-
-import (
-	"log"
-	"math"
-	"time"
-
-	"github.com/Edgaru089/gl01/internal/util"
-	"github.com/Edgaru089/gl01/internal/util/itype"
-	"github.com/Edgaru089/gl01/internal/world"
-)
-
-func (e *Entity) worldHitbox(hitbox itype.Vec3d) itype.Boxd {
-	return itype.Boxd{
-		OffX:  e.pos[0] - hitbox[0]/2,
-		OffY:  e.pos[1],
-		OffZ:  e.pos[2] - hitbox[2]/2,
-		SizeX: hitbox[0],
-		SizeY: hitbox[1],
-		SizeZ: hitbox[2],
-	}
-}
-
-// WorldHitbox returns the hitbox of the entity, in world coordinates.
-func (e *Entity) WorldHitbox() itype.Boxd {
-	return e.worldHitbox(e.b.Hitbox(e.pos, e.ds))
-}
-
-// MoveEps is a small value used to indicate a tiny amount more than zero.
-const MoveEps = 1e-7
-
-// the move series functions should be called with e.hp already filled
-
-func (e *Entity) moveX(delta float64, hitbox itype.Boxd, w *world.World) {
-	if math.Abs(delta) < MoveEps*10 {
-		return
-	}
-
-	var hit bool = false
-	var deltaMin float64 = 10000
-
-	if delta > 1-MoveEps {
-		delta = 1 - MoveEps
-	}
-	if delta < -1+MoveEps {
-		delta = -1 + MoveEps
-	}
-
-	// X+ / X-
-	if pointStuck(p, w) {
-		continue
-	}
-
-	dest := hitbox.Offsetv(delta, 0, 0)
-	blockid := dest.Floor()
-	block := w.Block(blockid)
-
-	var deltaDone float64
-	if block.Id == 0 {
-		deltaDone = delta
-	} else { // block.Id!=0
-		app := world.GetBlockAppearance(blockid, block.Id, block.Aux, block.Dataset)
-		blockBox := app.Hitbox.Offset(blockid.ToFloat64())
-		if !app.NotSolid && blockBox.Contains(dest) { // Hit!
-			hit = true
-			if delta > 0 { // moving X+, hit on the X- face
-				deltaDone = blockBox.OffX - (e.pos[0] + hitbox.SizeX/2) - MoveEps
-				//log.Print("Hit X+: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest, ", deltaDone=", deltaDone)
-			} else { // moving X-, hit on the X+ face
-				deltaDone = blockBox.OffX + blockBox.SizeX - (e.pos[0] - hitbox.SizeX/2) + MoveEps
-				//log.Print("Hit X-: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest, ", deltaDone=", deltaDone)
-			}
-		} else {
-			deltaDone = delta
-		}
-	}
-
-	deltaMin = util.AbsMind(deltaMin, deltaDone)
-
-	if hit {
-		e.speed[0] = 0
-	}
-	e.pos[0] += deltaMin
-}
-func (e *Entity) moveY(delta float64, hitbox itype.Boxd, w *world.World) {
-	if math.Abs(delta) < MoveEps*10 {
-		return
-	}
-
-	var hit bool = false
-	var deltaMin float64 = 10000
-
-	if delta > 1-MoveEps {
-		delta = 1 - MoveEps
-	}
-	if delta < -1+MoveEps {
-		delta = -1 + MoveEps
-	}
-
-	// Y+ / Y-
-	for _, p := range e.hp {
-		if pointStuck(p, w) {
-			continue
-		}
-
-		dest := p.Addv(0, delta, 0)
-		blockid := dest.Floor()
-		block := w.Block(blockid)
-
-		var deltaDone float64
-		if block.Id == 0 {
-			deltaDone = delta
-		} else { // block.Id!=0
-			app := world.GetBlockAppearance(blockid, block.Id, block.Aux, block.Dataset)
-			blockBox := app.Hitbox.Offset(blockid.ToFloat64())
-			if !app.NotSolid && blockBox.Contains(dest) { // Hit!
-				hit = true
-				if delta > 0 { // moving Y+, hit on the Y- face
-					deltaDone = blockBox.OffY - (e.pos[1] + hitbox.SizeY) - MoveEps
-					//log.Print("Hit Y+: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest,", deltaDone=",deltaDone)
-				} else { // moving Y-, hit on the Y+ face (on the ground)
-					deltaDone = blockBox.OffY + blockBox.SizeY - e.pos[1] + MoveEps
-					//log.Print("Hit Y-: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest,", deltaDone=",deltaDone)
-					if !e.onGround {
-						log.Print("onGround = true")
-					}
-					e.onGround = true
-				}
-			} else {
-				deltaDone = delta
-			}
-		}
-
-		deltaMin = util.AbsMind(deltaMin, deltaDone)
-	}
-
-	if hit {
-		e.speed[1] = 0
-	}
-
-	if math.Abs(deltaMin) > MoveEps*10 {
-		if e.onGround {
-			log.Print("onGround = false")
-		}
-		e.onGround = false
-	}
-	e.pos[1] += deltaMin
-}
-func (e *Entity) moveZ(delta float64, hitbox itype.Boxd, w *world.World) {
-	if math.Abs(delta) < MoveEps*10 {
-		return
-	}
-
-	var hit bool = false
-	var deltaMin float64 = 10000
-
-	if delta > 1-MoveEps {
-		delta = 1 - MoveEps
-	}
-	if delta < -1+MoveEps {
-		delta = -1 + MoveEps
-	}
-
-	// Z+ / Z-
-	for _, p := range e.hp {
-		if pointStuck(p, w) {
-			continue
-		}
-
-		dest := p.Addv(0, 0, delta)
-		blockid := dest.Floor()
-		block := w.Block(blockid)
-
-		var deltaDone float64
-		if block.Id == 0 {
-			deltaDone = delta
-		} else { // block.Id!=0
-			app := world.GetBlockAppearance(blockid, block.Id, block.Aux, block.Dataset)
-			blockBox := app.Hitbox.Offset(blockid.ToFloat64())
-			if !app.NotSolid && blockBox.Contains(dest) { // Hit!
-				hit = true
-				if delta > 0 { // moving Z+, hit on the Z- face
-					deltaDone = util.Maxd(blockBox.OffZ-(e.pos[2]+hitbox.SizeZ/2)-MoveEps, 0)
-					//log.Print("Hit Z+: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest, ", deltaDone=", deltaDone)
-				} else { // moving Z-, hit on the Z+ face
-					deltaDone = util.Mind(blockBox.OffZ+blockBox.SizeZ-(e.pos[2]-hitbox.SizeZ/2)+MoveEps, 0)
-					//log.Print("Hit Z-: On Block ", blockid, ", delta=", delta, ", coord=", e.pos, ", p=", p, ", dest=", dest, ", deltaDone=", deltaDone)
-				}
-			} else {
-				deltaDone = delta
-			}
-		}
-
-		deltaMin = util.AbsMind(deltaMin, deltaDone)
-	}
-
-	if hit {
-		e.speed[2] = 0
-	}
-	e.pos[2] += deltaMin
-}
-
-const gravity float64 = 26
-const deaclc float64 = 28
-
-func (e *Entity) Update(world *world.World, deltaTime time.Duration) {
-
-	hitbox := e.b.Hitbox(e.pos, e.ds)
-	box := e.worldHitbox(hitbox)
-
-	e.hp = e.hp[0:0]
-	e.hp = e.boxHitpoints(e.hp, box)
-
-	e.moveX(e.speed[0]*deltaTime.Seconds(), box, world)
-	e.moveY(e.speed[1]*deltaTime.Seconds(), box, world)
-	e.moveZ(e.speed[2]*deltaTime.Seconds(), box, world)
-
-	speed := math.Sqrt(e.speed[0]*e.speed[0] + e.speed[2]*e.speed[2])
-	if speed > MoveEps {
-		decrease := deaclc * deltaTime.Seconds()
-		if !e.onGround {
-			decrease /= 10
-		}
-		factor := util.Maxd(util.Mind(speed-decrease, 9), 0) / speed
-
-		e.speed[0] *= factor
-		e.speed[2] *= factor
-	}
-
-	e.speed[1] -= gravity * deltaTime.Seconds()
-
-	e.b.Update(e.pos, e.ds, world, deltaTime)
-}
--- a/internal/game/game.go
+++ b/internal/game/game.go
@@ -3,30 +3,12 @@ package game
 import (
 	"time"

-	"edgaru089.ink/go/gl01/internal/entity"
-	"edgaru089.ink/go/gl01/internal/render"
 	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
 	"github.com/inkyblackness/imgui-go/v4"
-
-	_ "edgaru089.ink/go/gl01/internal/entity/entities"
 )

 // Game holds a game scene.
 type Game struct {
-	world *world.World
-
-	player *entity.Entity
-
-	view   *render.View
-	render renderData
-
-	prevCursorPos itype.Vec2d
-	cameraPos     itype.Vec3d
-	rotY          itype.Angle
-	rotZ          float32 // Degrees in range (-90, 90)
-
-	fbSize            itype.Vec2i
 	fullscreen        bool
 	lastPos, lastSize itype.Vec2i // Window size before entering fullscreen

@@ -39,17 +21,5 @@ type Game struct {

 // NewGame creates a new, empty Game.
 func NewGame() (g *Game) {
-	return &Game{
-		world:     world.NewWorld(),
-		player:    entity.NewEntity("player", itype.Vec3d{18, 80, 18}),
-		cameraPos: itype.Vec3d{18, 80, 18},
-		rotY:      0,
-		rotZ:      0,
-	}
-}
-
-// LoadGameFromPath loads a saved game from a filesystem folder in a read-write fashion.
-func LoadGameFromPath(path string) (g *Game, err error) {
-
-	return
+	return &Game{}
 }
--- a/internal/game/imgui.go
+++ b/internal/game/imgui.go
@@ -2,9 +2,6 @@ package game

 import (
 	"image/color"
-	"log"
-	"math"
-	"os"
 	"runtime"

 	"edgaru089.ink/go/gl01/internal/asset"
@@ -12,15 +9,13 @@ import (
 	"edgaru089.ink/go/gl01/internal/igwrap/backend"
 	"edgaru089.ink/go/gl01/internal/io"
 	"edgaru089.ink/go/gl01/internal/util"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
 	"github.com/go-gl/glfw/v3.3/glfw"
 	"github.com/inkyblackness/imgui-go/v4"
 )

 type guiState struct {
-	showLog, showDebugInfo bool
-	logFollow              bool
+	showDemo  bool
+	logFollow bool

 	lastframeCgoCalls int64

@@ -45,8 +40,7 @@ func (g *Game) initImgui(win *glfw.Window) {
 	backend.Init(win)

 	g.gui = guiState{
-		showLog:       true,
-		showDebugInfo: false,
+		showDemo:      false,
 		logFollow:     true,
 		loadChunkFile: "chunk.gob",
 		loadChunkID:   [2]int32{0, 0},
@@ -73,11 +67,8 @@ func (g *Game) imgui() {
 			igwrap.TextBackground("CgoCalls:%d (%d lastframe), Goroutines:%d", g.gui.lastframeCgoCalls, io.Diagnostics.CgoCalls, runtime.NumGoroutine())
 			igwrap.TextBlank()

-			pos := g.player.Position()
-			igwrap.TextBackground("Player: (%.3f, %.5f, %.3f) (Y%.2f, Z%.2f)", pos[0], pos[1], pos[2], g.rotY.Degrees(), g.rotZ)
-
-			if ok, bc, face, _, _ := g.world.CastViewRay(io.ViewPos, io.ViewDir.Normalize(), 10); ok {
-				igwrap.TextBackground("Looking At: (%d %d %d) facing %s", bc[0], bc[1], bc[2], itype.DirectionName[face])
+			if imgui.SelectableV("Show Demo", g.gui.showDemo, 0, imgui.Vec2{imgui.CalcTextSize("Show Demo", false, 0).X, 0}) {
+				g.gui.showDemo = !g.gui.showDemo
 			}

 			imgui.End()
@@ -85,109 +76,12 @@ func (g *Game) imgui() {
 	}

 	if g.paused {
-		imgui.ShowDemoWindow(nil)
-
-		if imgui.BeginV("Player", nil, imgui.WindowFlagsAlwaysAutoResize) {
-			pos := g.player.Position()
-			vel := g.player.Speed()
-			igwrap.Text("Pos: (%.5f, %.5f, %.5f), Vel: (%.5f, %.5f, %.5f)", pos[0], pos[1], pos[2], vel[0], vel[1], vel[2])
-			igwrap.Text("VelXZ=%.5f, VelXYZ=%.5f", math.Sqrt(vel[0]*vel[0]+vel[2]*vel[2]), vel.Length())
+		if g.gui.showDemo {
+			imgui.ShowDemoWindow(&g.gui.showDemo)
 		}
-		imgui.End()
-
-		if igwrap.Begin("Logs", &g.gui.showLog, imgui.WindowFlagsMenuBar) {
-			if imgui.BeginMenuBar() {
-				if imgui.Button("Clear") {
-					logs = ""
-				}
-				if imgui.Button("Add Logs") {
-					for i := 0; i < 8; i++ {
-						log.Print("Added logs")
-					}
-				}
-				imgui.Checkbox("Autoscroll", &g.gui.logFollow)
-				imgui.EndMenuBar()
-			}
-
-			imgui.BeginChildV("LogScroll", imgui.Vec2{}, true, 0)
-			imgui.Text(logs)
-			if g.gui.logFollow && imgui.ScrollY() >= imgui.ScrollMaxY() {
-				imgui.SetScrollHereY(1.0)
-			}
-			imgui.EndChild()
-			imgui.End()
-		}
-
-		if imgui.Begin("Actions") {
-
-			imgui.Text("Chunks")
-			imgui.Separator()
-			imgui.InputText("Load Filename", &g.gui.loadChunkFile)
-			imgui.SliderInt2("Load ID", &g.gui.loadChunkID, -10, 10)
-			if imgui.ButtonV("Load", imgui.Vec2{X: -2, Y: 0}) {
-				c := &world.Chunk{}
-				f, err := os.Open(g.gui.loadChunkFile)
-				if err != nil {
-					log.Print("LoadChunk: ", err)
-				} else {
-					c.LoadFromGobIndexed(f, int(g.gui.loadChunkID[0]), int(g.gui.loadChunkID[1]))
-					g.world.SetChunk(int(g.gui.loadChunkID[0]), int(g.gui.loadChunkID[1]), c)
-				}
-			}
-			imgui.Separator()
-			imgui.InputText("Save Filename", &g.gui.saveChunkFile)
-			imgui.SliderInt2("Save ID", &g.gui.saveChunkID, -10, 10)
-			if imgui.ButtonV("Save", imgui.Vec2{X: -2, Y: 0}) {
-				c := g.world.Chunks[itype.Vec2i{int(g.gui.saveChunkID[0]), int(g.gui.saveChunkID[1])}]
-				f, _ := os.Create(g.gui.saveChunkFile)
-				c.WriteToGob(f)
-				f.Close()
-			}
-			imgui.Separator()
-
-		}
-		imgui.End()
 	}

 	imgui.BackgroundDrawList().AddRectFilledV(imgui.Vec2{X: float32(io.DisplaySize[0]/2 - 12), Y: float32(io.DisplaySize[1]/2 - 1)}, imgui.Vec2{X: float32(io.DisplaySize[0]/2 + 12), Y: float32(io.DisplaySize[1]/2 + 1)}, imgui.Packed(color.White), 0, 0)
 	imgui.BackgroundDrawList().AddRectFilledV(imgui.Vec2{X: float32(io.DisplaySize[0]/2 - 1), Y: float32(io.DisplaySize[1]/2 - 12)}, imgui.Vec2{X: float32(io.DisplaySize[0]/2 + 1), Y: float32(io.DisplaySize[1]/2 + 12)}, imgui.Packed(color.White), 0, 0)

-	imgui.SetNextWindowPosV(imgui.Vec2{float32(io.DisplaySize[0] / 2), float32(io.DisplaySize[1]) + 1}, imgui.ConditionAlways, imgui.Vec2{0.5, 1})
-	if igwrap.Begin("InventoryBar", nil, imgui.WindowFlagsAlwaysAutoResize|imgui.WindowFlagsNoNavFocus|imgui.WindowFlagsNoNavInputs|imgui.WindowFlagsNoDecoration|imgui.WindowFlagsNoBringToFrontOnFocus|imgui.WindowFlagsNoSavedSettings|imgui.WindowFlagsNoFocusOnAppearing) {
-
-		imgui.PushStyleColor(imgui.StyleColorBorder, imgui.Vec4{0.8, 0.8, 0.8, 1})
-		for i, id := range placeId {
-			if i != 0 {
-				imgui.SameLineV(0, 1)
-			}
-
-			if i == placei {
-				imgui.PushStyleVarFloat(imgui.StyleVarFrameBorderSize, 2)
-			}
-
-			app := world.GetBlockBehaviour(id).Appearance(itype.Vec3i{}, 0, nil, g.world)
-			var name string
-			switch app.RenderType {
-			case world.OneTexture:
-				name = app.Name + ".png"
-			case world.ThreeTexture:
-				name = app.Name + "_top.png"
-			case world.SixTexture:
-				name = app.Name + "_y+.png"
-			}
-			igwrap.ImageButtonV(
-				g.render.texture.Handle(),
-				itype.Vec2f{32, 32},
-				asset.WorldTextureAtlas.RectNormalized(name),
-				0, itype.Vec4f{}, itype.Vec4f{1, 1, 1, 1},
-			)
-
-			if i == placei {
-				imgui.PopStyleVar()
-			}
-		}
-		imgui.PopStyleColor()
-
-		imgui.End()
-	}
 }
--- a/internal/game/logic.go
+++ b/internal/game/logic.go
@@ -1,21 +1,16 @@
 package game

 import (
-	"image/color"
 	"log"
 	"os"
 	"time"

 	"edgaru089.ink/go/gl01/internal/igwrap/backend"
 	"edgaru089.ink/go/gl01/internal/io"
-	"edgaru089.ink/go/gl01/internal/render"
 	"edgaru089.ink/go/gl01/internal/util"
 	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-	"edgaru089.ink/go/gl01/internal/world/blocks"
-	"edgaru089.ink/go/gl01/internal/world/worldgen"
+	"edgaru089.ink/go/gl01/internal/work"
 	"github.com/go-gl/glfw/v3.3/glfw"
-	"github.com/go-gl/mathgl/mgl64"
 )

 const (
@@ -23,10 +18,6 @@ const (
 	PlayerPlaceCooldown = 200 * time.Millisecond
 )

-var placeId = [10]int{blocks.Stone, blocks.Slab, blocks.Grass, blocks.LogOak, blocks.PlanksOak, blocks.LeavesOak, blocks.Glass, blocks.DebugDir, blocks.Bedrock, blocks.Water}
-var placeAux = [10]int{0, blocks.PlanksOak, 0, 0, 0, 0, 0, 0, 0, 0}
-var placei = 0
-
 var logs string

 type logger struct{}
@@ -44,55 +35,19 @@ func init() {
 // Init initializes the game.
 func (g *Game) Init(win *glfw.Window) {

-	g.world = world.NewWorld()
-	g.view = &render.View{}
-
-	err := g.initRender()
-	if err != nil {
-		panic(err)
-	}
-
-	g.player.SetDatasetI("LastBreak", 0)
-	g.player.SetDatasetI("LastPlace", 0)
-
-	var seed int64 = time.Now().Unix()
-	gensync := make(chan struct{})
-	gensynccnt := 0
-	for i := -4; i <= 4; i++ {
-		for j := -4; j <= 4; j++ {
-			c := &world.Chunk{}
-			g.world.SetChunk(i, j, c)
-			go func() {
-				worldgen.Chunk(c, g.world, seed)
-				gensync <- struct{}{}
-			}()
-			gensynccnt++
-		}
-	}
-
-	for i := 0; i < gensynccnt; i++ {
-		<-gensync
-	}
-
 	width, height := win.GetSize()
-	g.view.Aspect(float32(width)/float32(height)).FovY(itype.Degrees(60)).LookAt(g.cameraPos.ToFloat32(), g.rotY, itype.Degrees(g.rotZ))

 	io.DisplaySize[0], io.DisplaySize[1] = win.GetFramebufferSize()
 	win.SetSizeCallback(func(w *glfw.Window, width, height int) {
 		//win.SetCursorPos(float64(width)/2, float64(height)/2)
-		g.view.Aspect(float32(width) / float32(height))
 		io.DisplaySize = itype.Vec2i{width, height}
 	})

-	err = render.Framewire.Init()
-	if err != nil {
-		panic(err)
-	}
-
 	g.initImgui(win)

 	win.SetCursorPos(float64(width)/2, float64(height)/2)

+	io.ShowDebugInfo = true
 	g.paused = true
 	//win.SetInputMode(glfw.CursorMode, glfw.CursorDisabled)
 	win.SetCursorPosCallback(func(w *glfw.Window, xpos, ypos float64) {
@@ -102,15 +57,8 @@ func (g *Game) Init(win *glfw.Window) {

 		width, height := w.GetSize()
 		centerX, centerY := float64(width)/2, float64(height)/2
-		deltaX, deltaY := xpos-centerX, ypos-centerY
-		g.rotY -= itype.Degrees(float32(deltaX) / 10)
-		g.rotZ -= float32(deltaY) / 10
-		if g.rotZ > 89.99 {
-			g.rotZ = 89.99
-		}
-		if g.rotZ < -89.99 {
-			g.rotZ = -89.99
-		}
+		//deltaX, deltaY := xpos-centerX, ypos-centerY
+		_, _ = xpos-centerX, ypos-centerY
 		win.SetCursorPos(centerX, centerY)
 	})

@@ -125,21 +73,6 @@ func (g *Game) Init(win *glfw.Window) {
 			backend.KeyCallback(key, action)
 		}
 		if action == glfw.Press {
-			if g.paused {
-				if key == glfw.KeyEscape && !g.io.WantCaptureKeyboard() {
-					g.paused = false
-					win.SetInputMode(glfw.CursorMode, glfw.CursorDisabled)
-					width, height := w.GetSize()
-					win.SetCursorPos(float64(width)/2, float64(height)/2)
-				}
-			} else {
-				if key == glfw.KeyEscape {
-					g.paused = true
-					win.SetInputMode(glfw.CursorMode, glfw.CursorNormal)
-					width, height := w.GetSize()
-					win.SetCursorPos(float64(width)/2, float64(height)/2)
-				}
-			}

 			if key == glfw.KeyF11 {
 				if g.fullscreen {
@@ -175,24 +108,12 @@ func (g *Game) Init(win *glfw.Window) {
 	win.SetScrollCallback(func(w *glfw.Window, xpos, ypos float64) {
 		if g.paused {
 			backend.MouseScrollCallback(xpos, ypos)
-		} else {
-			if ypos > 0 {
-				placei--
-			} else if ypos < 0 {
-				placei++
-			}
-			if placei < 0 {
-				placei += len(placeId)
-			}
-			if placei >= len(placeId) {
-				placei -= len(placeId)
-			}
 		}
 	})

-}
+	work.Init()

-const airAccel = 0.1
+}

 // Update updates the game state, not necessarily in the main thread.
 func (g *Game) Update(win *glfw.Window, delta time.Duration) {
@@ -201,113 +122,7 @@ func (g *Game) Update(win *glfw.Window, delta time.Duration) {

 	clock := util.NewClock()

-	if !g.paused {
-
-		if win.GetKey(glfw.KeyLeft) == glfw.Press {
-			g.rotY += itype.Degrees(float32(delta.Seconds()) * 100)
-		}
-		if win.GetKey(glfw.KeyRight) == glfw.Press {
-			g.rotY -= itype.Degrees(float32(delta.Seconds()) * 100)
-		}
-		if win.GetKey(glfw.KeyUp) == glfw.Press {
-			g.rotZ += float32(delta.Seconds()) * 100
-			if g.rotZ > 89.99 {
-				g.rotZ = 89.99
-			}
-		}
-		if win.GetKey(glfw.KeyDown) == glfw.Press {
-			g.rotZ -= float32(delta.Seconds()) * 100
-			if g.rotZ < -89.99 {
-				g.rotZ = -89.99
-			}
-		}
-
-		//forward := itype.Vec3f(mgl32.Rotate3DY(mgl32.DegToRad(g.rotY)).Mul3(mgl32.Rotate3DZ(mgl32.DegToRad(g.rotZ))).Mul3x1(mgl32.Vec3{1, 0, 0})).ToFloat64().Multiply(delta.Seconds()*8)
-		var walkaccel float64
-		if g.player.OnGround() {
-			walkaccel = 48
-		} else {
-			walkaccel = 16
-		}
-
-		forward := itype.Vec3d(mgl64.Rotate3DY(float64(g.rotY.Radians())).Mul3x1(mgl64.Vec3{1, 0, 0}))
-		right := forward.Cross(itype.Vec3d{0, 1, 0})
-		accel := itype.Vec3d{0, 0, 0}
-		if win.GetKey(glfw.KeyW) == glfw.Press {
-			accel = accel.Add(forward.Multiply(walkaccel * delta.Seconds()))
-		}
-		if win.GetKey(glfw.KeyS) == glfw.Press {
-			accel = accel.Add(forward.Multiply(walkaccel * delta.Seconds()).Negative())
-		}
-		if win.GetKey(glfw.KeyD) == glfw.Press {
-			accel = accel.Add(right.Multiply(walkaccel * delta.Seconds()))
-		}
-		if win.GetKey(glfw.KeyA) == glfw.Press {
-			accel = accel.Add(right.Multiply(walkaccel * delta.Seconds()).Negative())
-		}
-
-		if win.GetKey(glfw.KeySpace) == glfw.Press && g.player.OnGround() {
-			//log.Print("Jump!")
-			accel = accel.Addv(0, 8, 0)
-		}
-
-		g.player.Accelerate(accel[0], accel[1], accel[2])
-	}
-
-	g.player.Update(g.world, delta)
-
-	g.view.LookAt(g.player.EyePosition().ToFloat32(), g.rotY, itype.Degrees(g.rotZ))
-	io.ViewPos = g.player.EyePosition()
-	io.ViewDir = itype.Vec3d(mgl64.Rotate3DY(float64(g.rotY.Radians())).Mul3(mgl64.Rotate3DZ(float64(itype.Degrees(g.rotZ)))).Mul3x1(mgl64.Vec3{1, 0, 0}))
-
-	render.Framewire.PushBox(g.player.WorldHitbox()[0].ToFloat32(), color.White)
-
-	if g.player.Position()[1] < -100 {
-		g.player.SetPosition(itype.Vec3d{18, 80, 18})
-		g.player.SetSpeed(itype.Vec3d{})
-	}
-
-	if ok, bc, dir, _, _ := g.world.CastViewRay(io.ViewPos, io.ViewDir.Normalize(), 6); ok {
-		ba := g.world.Block(bc).Appearance(bc)
-		for _, r := range ba.Lookbox {
-			render.Framewire.PushBox(r.GrowEven(itype.Vec3d{0.03125, 0.03125, 0.03125}).Offset(bc.ToFloat64()).ToFloat32(), color.White)
-		}
-
-		if !g.paused {
-			// Break/Place block
-			if win.GetMouseButton(glfw.MouseButtonLeft) == glfw.Press && g.runtime-time.Duration(g.player.DatasetI("LastBreak")) >= PlayerBreakCooldown {
-				// Break
-				g.world.Break(bc)
-				g.player.SetDatasetI("LastBreak", int64(g.runtime))
-			} else if win.GetMouseButton(glfw.MouseButtonRight) == glfw.Press && g.runtime-time.Duration(g.player.DatasetI("LastPlace")) >= PlayerBreakCooldown {
-				// Place
-				// Check hitbox
-				tobehit := world.GetBlockBehaviour(placeId[placei]).Appearance(bc.Add(itype.DirectionVeci[dir]), 0, nil, g.world).Hitbox
-				if len(tobehit) == 0 {
-					tobehit = []itype.Boxd{{OffX: 0, OffY: 0, OffZ: 0, SizeX: 1, SizeY: 1, SizeZ: 1}}
-				}
-				canplace := true
-			outer:
-				for _, pb := range g.player.WorldHitbox() {
-					for _, b := range tobehit {
-						if ok, _ := b.Offset(bc.Add(itype.DirectionVeci[dir]).ToFloat64()).Intersect(pb); ok {
-							canplace = false
-							break outer
-						}
-					}
-				}
-
-				if canplace {
-					aux := placeAux[placei]
-					if win.GetKey(glfw.KeyLeftShift) == glfw.Press {
-						aux = -aux
-					}
-					g.world.SetBlock(bc.Add(itype.DirectionVeci[dir]), placeId[placei], aux, nil)
-					g.player.SetDatasetI("LastPlace", int64(g.runtime))
-				}
-			}
-		}
-	}
+	work.Update(delta)

 	io.Diagnostics.Times.Logic = clock.Restart()

--- a/internal/game/render.go
+++ b/internal/game/render.go
@@ -1,488 +1,19 @@
 package game

 import (
-	"errors"
-	"math/rand"
-	"time"
-	"unsafe"
-
-	"edgaru089.ink/go/gl01/internal/asset"
-	"edgaru089.ink/go/gl01/internal/igwrap"
 	"edgaru089.ink/go/gl01/internal/igwrap/backend"
-	"edgaru089.ink/go/gl01/internal/io"
-	"edgaru089.ink/go/gl01/internal/render"
-	"edgaru089.ink/go/gl01/internal/util"
 	"edgaru089.ink/go/gl01/internal/util/itype"
-	"github.com/go-gl/gl/all-core/gl"
 	"github.com/go-gl/glfw/v3.3/glfw"
-	"github.com/go-gl/mathgl/mgl32"
-	"github.com/inkyblackness/imgui-go/v4"
 )

-const (
-	SSAOSampleCount = 32 // Number of samples in the SSAO pass. Must stay the same with ssao.frag
-)
-
-var (
-	ShadowmapSize = itype.Vec2i{6144, 6144} // Size of the shadow mapping
-	RandomSize    = itype.Vec2i{32, 32}     // Size of the random mapping
-)
-
-// renderData holds OpenGL state used by the game renderer.
-type renderData struct {
-	lastDisplaySize itype.Vec2i
-	startTime       time.Time
-
-	texRand uint32 // random texture mapping, RGBA8 (0~1)
-
-	// Depth mapping pass
-	depthmap struct {
-		fbo, tex uint32         // Framebuffer Object and Texture.
-		shader   *render.Shader // Shader.
-	}
-
-	// Geometry pass
-	gbuffer struct {
-		fbo uint32 // The Framebuffer object.
-
-		// Textures. Position/Depth(View Space);   Normal/Lightspace Depth;  Diffuse Color/Specular Intensity.
-		pos, norm, color uint32
-		depth            uint32         // Depth renderbuffer.
-		shader           *render.Shader // Geometry pass shaders.
-	}
-
-	// Screen-Space Ambient Occlusion (SSAO) pass
-	ssao struct {
-		fbo        uint32         // Framebuffer
-		ambient    uint32         // Ambient strength output texture [0,1] (Red channel)
-		uboSamples uint32         // Uniform Buffer Object pointing to the array of samples
-		shader     *render.Shader // SSAO pass shader
-
-		// SSAO blur pass
-		blur struct {
-			fbo    uint32
-			output uint32
-			shader *render.Shader
-		}
-	}
-
-	// Deferred lighting pass
-	lighting struct {
-		shader *render.Shader // Deferred lighting pass shaders
-	}
-
-	// Semi-transparent pass
-	water struct {
-		shader *render.Shader
-	}
-
-	// Output pass
-	output struct {
-		fbo uint32 // Output framebuffer object, rendering to the output texture.
-		tex uint32 // Output texture, rendered to the back buffer at the end.
-		//depth uint32  // Output depth renderbuffer, use gbuffer.depth
-		shader *render.Shader // Shader used to copy output.tex to back buffer.
-	}
-
-	texture *render.Texture // World texture atlas
-}
-
-func (g *Game) initRender() (err error) {
-	r := &g.render
-
-	r.depthmap.shader, err = render.NewShader(asset.WorldShaderShadowmapVert, asset.WorldShaderShadowmapFrag)
-	if err != nil {
-		return errors.New("depthmap: " + err.Error())
-	}
-	r.gbuffer.shader, err = render.NewShader(asset.WorldShaderGeometryVert, asset.WorldShaderGeometryFrag)
-	if err != nil {
-		return errors.New("gbuffer: " + err.Error())
-	}
-	r.ssao.shader, err = render.NewShader(asset.WorldShaderSSAOVert, asset.WorldShaderSSAOFrag)
-	if err != nil {
-		return errors.New("ssao: " + err.Error())
-	}
-	r.ssao.blur.shader, err = render.NewShader(asset.WorldShaderSSAOBlurVert, asset.WorldShaderSSAOBlurFrag)
-	if err != nil {
-		return errors.New("ssao_blur: " + err.Error())
-	}
-	r.lighting.shader, err = render.NewShader(asset.WorldShaderLightingVert, asset.WorldShaderLightingFrag)
-	if err != nil {
-		return errors.New("lighting: " + err.Error())
-	}
-	r.water.shader, err = render.NewShader(asset.WorldShaderWaterVert, asset.WorldShaderWaterFrag)
-	if err != nil {
-		return errors.New("water: " + err.Error())
-	}
-	r.output.shader, err = render.NewShader(asset.WorldShaderOutputVert, asset.WorldShaderOutputFrag)
-	if err != nil {
-		return errors.New("output: " + err.Error())
-	}
-
-	// get the maximum anisotropic filtering level
-	var maxaf float32
-	gl.GetFloatv(gl.MAX_TEXTURE_MAX_ANISOTROPY, &maxaf)
-
-	asset.InitWorldTextureAtlas()
-	r.texture = render.NewTexture()
-	r.texture.UpdatesRGB(asset.WorldTextureAtlas.Image)
-	r.texture.GenerateMipMap()
-	gl.BindTexture(gl.TEXTURE_2D, r.texture.Handle())
-	gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAX_ANISOTROPY, maxaf)
-	r.depthmap.shader.SetUniformTexture("tex", r.texture)
-	r.gbuffer.shader.SetUniformTexture("tex", r.texture)
-	r.water.shader.SetUniformTexture("tex", r.texture)
-	igwrap.SetTextureFlag(r.texture.Handle(), igwrap.TextureFlag_Linear, igwrap.TextureFlag_FlipY)
-
-	r.depthmap.shader.SetUniformMat4("model", mgl32.Ident4())
-	r.gbuffer.shader.SetUniformMat4("model", mgl32.Ident4())
-	r.water.shader.SetUniformMat4("model", mgl32.Ident4())
-	// and view and projection uniforms not yet set
-	gl.BindFragDataLocation(r.lighting.shader.Handle(), 0, gl.Str("outputColor\x00"))
-	gl.BindFragDataLocation(r.water.shader.Handle(), 0, gl.Str("outputColor\x00"))
-	gl.BindFragDataLocation(r.output.shader.Handle(), 0, gl.Str("outputColor\x00"))
-
-	// generate random mapping
-	{
-		data := make([]uint32, RandomSize[0]*RandomSize[1])
-		for i := range data {
-			data[i] = rand.Uint32()
-		}
-		gl.GenTextures(1, &r.texRand)
-		gl.BindTexture(gl.TEXTURE_2D, r.texRand)
-		gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(RandomSize[0]), int32(RandomSize[1]), 0, gl.RGBA, gl.UNSIGNED_BYTE, util.Ptr(data))
-		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
-		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
-		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
-		gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
-	}
-	r.ssao.shader.SetUniformTextureHandle("rand", r.texRand)
-	r.ssao.shader.SetUniformVec2f("randSize", RandomSize.ToFloat32())
-
-	// generate the depthmap and depthmap FBO
-	gl.GenFramebuffers(1, &r.depthmap.fbo)
-	gl.GenTextures(1, &r.depthmap.tex)
-	gl.BindTexture(gl.TEXTURE_2D, r.depthmap.tex)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.DEPTH_COMPONENT, int32(ShadowmapSize[0]), int32(ShadowmapSize[1]), 0, gl.DEPTH_COMPONENT, gl.FLOAT, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_BORDER)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_BORDER)
-	borderColor := []float32{1, 1, 1, 1}
-	gl.TexParameterfv(gl.TEXTURE_2D, gl.TEXTURE_BORDER_COLOR, &borderColor[0])
-	// attach depth texture as FBO's depth buffer
-	gl.BindFramebuffer(gl.FRAMEBUFFER, r.depthmap.fbo)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, r.depthmap.tex, 0)
-	gl.DrawBuffer(gl.NONE)
-	gl.ReadBuffer(gl.NONE)
-	// attach the shadowmap to the shader
-	r.lighting.shader.SetUniformTextureHandle("shadowmap", r.depthmap.tex)
-	r.water.shader.SetUniformTextureHandle("shadowmap", r.depthmap.tex)
-
-	// generate G-buffer and friends
-	gl.GenFramebuffers(1, &r.gbuffer.fbo)
-	gl.BindFramebuffer(gl.FRAMEBUFFER, r.gbuffer.fbo)
-	// position
-	gl.GenTextures(1, &r.gbuffer.pos)
-	gl.BindTexture(gl.TEXTURE_2D, r.gbuffer.pos)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA32F, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.FLOAT, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_BORDER)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_BORDER)
-	borderColor = []float32{1, 1, 1, 1}
-	gl.TexParameterfv(gl.TEXTURE_2D, gl.TEXTURE_BORDER_COLOR, &borderColor[0])
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, r.gbuffer.pos, 0)
-	// normal
-	gl.GenTextures(1, &r.gbuffer.norm)
-	gl.BindTexture(gl.TEXTURE_2D, r.gbuffer.norm)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA16F, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.FLOAT, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT1, gl.TEXTURE_2D, r.gbuffer.norm, 0)
-	// diffuse color
-	gl.GenTextures(1, &r.gbuffer.color)
-	gl.BindTexture(gl.TEXTURE_2D, r.gbuffer.color)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT2, gl.TEXTURE_2D, r.gbuffer.color, 0)
-	// depth
-	gl.GenRenderbuffers(1, &r.gbuffer.depth)
-	gl.BindRenderbuffer(gl.RENDERBUFFER, r.gbuffer.depth)
-	gl.RenderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]))
-	gl.FramebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, r.gbuffer.depth)
-	// tell OpenGL which color attachments we'll use (of this framebuffer)
-	attachments := [...]uint32{gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1, gl.COLOR_ATTACHMENT2}
-	gl.DrawBuffers(int32(len(attachments)), &attachments[0])
-	// attach the textures
-	r.lighting.shader.SetUniformTextureHandle("gPos", r.gbuffer.pos)
-	r.lighting.shader.SetUniformTextureHandle("gNorm", r.gbuffer.norm)
-	r.lighting.shader.SetUniformTextureHandle("gColor", r.gbuffer.color)
-	r.ssao.shader.SetUniformTextureHandle("gPos", r.gbuffer.pos)
-	r.ssao.shader.SetUniformTextureHandle("gNorm", r.gbuffer.norm)
-	r.water.shader.SetUniformTextureHandle("gPos", r.gbuffer.pos)
-
-	// generate SSAO friends
-	gl.GenFramebuffers(1, &r.ssao.fbo)
-	gl.BindFramebuffer(gl.FRAMEBUFFER, r.ssao.fbo)
-	// ambient strength texture
-	gl.GenTextures(1, &r.ssao.ambient)
-	gl.BindTexture(gl.TEXTURE_2D, r.ssao.ambient)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RED, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RED, gl.UNSIGNED_BYTE, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, r.ssao.ambient, 0)
-	r.ssao.blur.shader.SetUniformTextureHandle("tex", r.ssao.ambient)
-	// uniform buffer object for samples
-	ssaoSamples := make([]itype.Vec4f, SSAOSampleCount)
-	for i := range ssaoSamples {
-		sample := itype.Vec3d{rand.Float64()*2 - 1, rand.Float64()*2 - 1, rand.Float64() + 0.05}
-		sample = sample.Normalize().Multiply(rand.Float64()).Multiply(rand.Float64())
-		ssaoSamples[i] = itype.Vec4f{
-			float32(sample[0]),
-			float32(sample[1]),
-			float32(sample[2]),
-			0,
-		}
-	}
-	gl.GenBuffers(1, &r.ssao.uboSamples)
-	gl.BindBuffer(gl.UNIFORM_BUFFER, r.ssao.uboSamples)
-	gl.BufferData(gl.UNIFORM_BUFFER, int(unsafe.Sizeof(float32(0))*4*SSAOSampleCount), util.Ptr(ssaoSamples), gl.STATIC_DRAW)
-	// bind UBO (onto binding 0 for now)
-	gl.BindBufferBase(gl.UNIFORM_BUFFER, 0, r.ssao.uboSamples)
-	gl.UniformBlockBinding(r.ssao.shader.Handle(), gl.GetUniformBlockIndex(r.ssao.shader.Handle(), gl.Str("uboSamples\x00")), 0)
-	// SSAO blur pass
-	gl.GenFramebuffers(1, &r.ssao.blur.fbo)
-	gl.BindFramebuffer(gl.FRAMEBUFFER, r.ssao.blur.fbo)
-	gl.GenTextures(1, &r.ssao.blur.output)
-	gl.BindTexture(gl.TEXTURE_2D, r.ssao.blur.output)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RED, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RED, gl.UNSIGNED_BYTE, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, r.ssao.blur.output, 0)
-	r.lighting.shader.SetUniformTextureHandle("ssaoAmbient", r.ssao.blur.output)
-
-	// generate the output texture and friends
-	gl.GenFramebuffers(1, &r.output.fbo)
-	gl.BindFramebuffer(gl.FRAMEBUFFER, r.output.fbo)
-	// output
-	gl.GenTextures(1, &r.output.tex)
-	gl.BindTexture(gl.TEXTURE_2D, r.output.tex)
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA16F, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.FLOAT, nil)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
-	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
-	gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, r.output.tex, 0)
-	// depth
-	gl.FramebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, r.gbuffer.depth)
-	// attach textures
-	r.output.shader.SetUniformTextureHandle("tex", r.output.tex)
-
-	// set the texture flags for ImGUI
-	igwrap.SetTextureFlag(r.gbuffer.color, igwrap.TextureFlag_Linear)
-	igwrap.SetTextureFlag(r.ssao.ambient, igwrap.TextureFlag_Red)
-
-	gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
-	r.lastDisplaySize = io.DisplaySize
-	r.startTime = time.Now()
-
-	return nil
-}
-
 // ResizeDisplay resizes the size of the internal buffers dependent on the window size.
 // It is called automatically most of the time.
 func (g *Game) ResizeDisplay(newSize itype.Vec2i) {
-	gl.BindTexture(gl.TEXTURE_2D, g.render.gbuffer.pos) // G-Buffer, Position
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA32F, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.FLOAT, nil)
-	gl.BindTexture(gl.TEXTURE_2D, g.render.gbuffer.norm) // G-Buffer, Normal
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA16F, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.FLOAT, nil)
-	gl.BindTexture(gl.TEXTURE_2D, g.render.gbuffer.color) // G-Buffer, Albedo Color
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
-	gl.BindRenderbuffer(gl.RENDERBUFFER, g.render.gbuffer.depth) // G-Buffer, Depth (Renderbuffer)
-	gl.RenderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]))
-	gl.BindTexture(gl.TEXTURE_2D, g.render.ssao.ambient) // SSAO Output Ambient Strength
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RED, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RED, gl.UNSIGNED_BYTE, nil)
-	gl.BindTexture(gl.TEXTURE_2D, g.render.ssao.blur.output) // SSAO Blurred Output
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RED, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RED, gl.UNSIGNED_BYTE, nil)
-	gl.BindTexture(gl.TEXTURE_2D, g.render.output.tex) // Output Texture
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]), 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
-	g.render.lastDisplaySize = newSize

 }

-var (
-	sun        = [3]float32{0.2, 0.4, 0.3}
-	alpha      = float32(0.55)
-	gamma      = float32(2.2)
-	exposure   = float32(1)
-	atlasScale = float32(1)
-)
-
 // Render, called with a OpenGL context, renders the game.
 func (g *Game) Render(win *glfw.Window) {
-	gl.Viewport(0, 0, int32(io.DisplaySize[0]), int32(io.DisplaySize[1]))
-	matv, matp := g.view.View(), g.view.Perspective()
-	matvp := matp.Mul4(matv)
-
-	allclock := util.NewClock()
-	lastclock := util.NewClock()
-
-	io.RenderPos = io.ViewPos
-	io.RenderDir = io.ViewDir
-
-	// re-generate the G-buffers if the display size changed
-	if g.render.lastDisplaySize != io.DisplaySize {
-		g.ResizeDisplay(io.DisplaySize)
-	}
-
-	if g.paused {
-		imgui.SliderFloat3("Sun", &sun, -1, 1)
-		imgui.SliderFloat("Water Alpha", &alpha, 0, 1)
-		imgui.SliderFloat("Gamma", &gamma, 1.6, 2.8)
-		imgui.SliderFloat("Exposure", &exposure, 0, 2)
-	}
-	normalSun := itype.Vec3f(sun).Normalize()
-
-	gl.Enable(gl.CULL_FACE)
-	gl.Enable(gl.DEPTH_TEST)
-	gl.DepthFunc(gl.LESS)
-
-	lastclock.Restart()
-
-	// 1. Render to depth map
-	gl.Viewport(0, 0, int32(ShadowmapSize[0]), int32(ShadowmapSize[1]))
-	gl.BindFramebuffer(gl.FRAMEBUFFER, g.render.depthmap.fbo)
-	gl.Clear(gl.DEPTH_BUFFER_BIT)
-	gl.Disable(gl.CULL_FACE)
-
-	lightPos := g.view.EyePos.Add(normalSun.Multiply(50))
-	lightView := mgl32.LookAt(lightPos[0], lightPos[1], lightPos[2], g.view.EyePos[0], g.view.EyePos[1], g.view.EyePos[2], 0, 1, 0)
-	lightProjection := mgl32.Ortho(-50, 50, -50, 50, 1, 100)
-	lightspace := lightProjection.Mul4(lightView)
-
-	io.RenderPos = lightPos.ToFloat64()
-	io.RenderDir = g.view.EyePos.Add(lightPos.Negative()).ToFloat64()
-
-	g.render.depthmap.shader.UseProgram()
-	g.render.depthmap.shader.BindTextures()
-	g.render.depthmap.shader.SetUniformMat4("lightspace", lightspace)
-
-	g.world.Render()
-	g.world.RenderWater()
-
-	gl.Flush()
-	io.Diagnostics.Times.RenderPasses.Depthmap = lastclock.Restart()
-
-	// 2. Geometry pass, render to G-buffer
-	io.RenderPos = io.ViewPos
-	io.RenderDir = io.ViewDir
-
-	gl.Viewport(0, 0, int32(g.render.lastDisplaySize[0]), int32(g.render.lastDisplaySize[1]))
-	gl.BindFramebuffer(gl.FRAMEBUFFER, g.render.gbuffer.fbo)
-	gl.ClearColor(0, 0, 0, 1)
-	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
-	gl.Enable(gl.CULL_FACE)
-	gl.Disable(gl.BLEND)
-
-	g.render.gbuffer.shader.UseProgram()
-	g.render.gbuffer.shader.BindTextures()
-	g.render.gbuffer.shader.SetUniformMat4("lightspace", lightspace)
-	g.render.gbuffer.shader.SetUniformMat4("view", matv)
-	g.render.gbuffer.shader.SetUniformMat4("projection", matp)
-	g.render.gbuffer.shader.SetUniformMat4("mvp", matvp)
-	g.render.gbuffer.shader.SetUniformVec3f("viewPos", g.view.EyePos)
-
-	g.world.Render()
-
-	gl.Flush()
-	io.Diagnostics.Times.RenderPasses.Geometry = lastclock.Restart()
-
-	// 3/1. SSAO pass
-	gl.BindFramebuffer(gl.FRAMEBUFFER, g.render.ssao.fbo)
-	gl.ClearColor(1, 1, 1, 1)
-	gl.Clear(gl.COLOR_BUFFER_BIT)
-
-	g.render.ssao.shader.UseProgram()
-	g.render.ssao.shader.BindTextures()
-	g.render.ssao.shader.SetUniformMat4("view", matv)
-	g.render.ssao.shader.SetUniformMat4("projection", matp)
-	g.render.ssao.shader.SetUniformVec3f("viewPos", g.view.EyePos)
-
-	render.DrawScreenQuad()
-
-	// 3/2. SSAO blur pass
-	gl.BindFramebuffer(gl.FRAMEBUFFER, g.render.ssao.blur.fbo)
-	g.render.ssao.blur.shader.UseProgram()
-	g.render.ssao.blur.shader.BindTextures()
-	g.render.ssao.blur.shader.SetUniformVec2f("screenSize", g.render.lastDisplaySize.ToFloat32())
-
-	render.DrawScreenQuad()
-
-	gl.Flush()
-	io.Diagnostics.Times.RenderPasses.SSAO = lastclock.Restart()
-
-	// 4. Render the actual output with deferred lighting
-	gl.BindFramebuffer(gl.FRAMEBUFFER, g.render.output.fbo)
-	gl.ClearColor(0, 0, 0, 0)
-	gl.Clear(gl.COLOR_BUFFER_BIT)
-	gl.Disable(gl.DEPTH_TEST)
-	g.render.lighting.shader.UseProgram()
-	g.render.lighting.shader.BindTextures()
-	g.render.lighting.shader.SetUniformMat4("lightspace", lightspace)
-	g.render.lighting.shader.SetUniformVec3f("viewPos", g.view.EyePos)
-	g.render.lighting.shader.SetUniformVec4f("fogColor", io.FogColor)
-	g.render.lighting.shader.SetUniformVec3f("sun", normalSun)
-
-	render.DrawScreenQuad()
-
-	gl.Flush()
-	io.Diagnostics.Times.RenderPasses.Lighting = lastclock.Restart()
-
-	// 5. Render water
-	gl.Enable(gl.DEPTH_TEST)
-	gl.DepthFunc(gl.LESS)
-	gl.Enable(gl.CULL_FACE)
-	gl.Enable(gl.BLEND)
-	gl.BlendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
-	gl.BlendEquation(gl.FUNC_ADD)
-	g.render.water.shader.UseProgram()
-	g.render.water.shader.BindTextures()
-
-	g.render.water.shader.SetUniformMat4("lightspace", lightspace)
-	g.render.water.shader.SetUniformMat4("view", matv)
-	g.render.water.shader.SetUniformMat4("projection", matp)
-	g.render.water.shader.SetUniformVec3f("viewPos", g.view.EyePos)
-	g.render.water.shader.SetUniformVec4f("fogColor", io.FogColor)
-	g.render.water.shader.SetUniformVec3f("sun", normalSun)
-	g.render.water.shader.SetUniformFloat("alpha", alpha)
-	g.render.water.shader.SetUniformVec2f("screenSize", g.render.lastDisplaySize.ToFloat32())
-
-	g.world.RenderWater()
-
-	// And render framewires
-	render.Framewire.Render(g.view)
-
-	// Finally. Copy the output texture to the back buffer
-	gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
-	gl.ClearColor(io.ClearColor[0], io.ClearColor[1], io.ClearColor[2], io.ClearColor[3])
-	gl.Clear(gl.COLOR_BUFFER_BIT)
-	gl.Disable(gl.DEPTH_TEST)
-	gl.Disable(gl.BLEND)
-	g.render.output.shader.UseProgram()
-	g.render.output.shader.BindTextures()
-	g.render.output.shader.SetUniformFloat("gamma", gamma)
-	g.render.output.shader.SetUniformFloat("exposure", exposure)
-
-	render.DrawScreenQuad()
-
-	gl.Flush()
-	io.Diagnostics.Times.RenderPasses.Postfx = lastclock.Restart()
-	io.Diagnostics.Times.Render = allclock.Elapsed()
-
-	// Show Information?
-	if io.ShowDebugInfo {
-		g.renderDebugInfo()
-	}

 	backend.Render(win)

--- a/internal/game/render_debuginfo.go
+++ b/internal/game/render_debuginfo.go
@@ -1,116 +0,0 @@
-package game
-
-import (
-	"math"
-	"time"
-
-	"edgaru089.ink/go/gl01/internal/asset"
-	"edgaru089.ink/go/gl01/internal/igwrap"
-	"edgaru089.ink/go/gl01/internal/io"
-	"edgaru089.ink/go/gl01/internal/util"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"github.com/inkyblackness/imgui-go/v4"
-)
-
-const (
-	timebarN = 700
-)
-
-var (
-	colorset     = [...]imgui.PackedColor{4289753676, 4283598045, 4285048917, 4283584196, 4289950337, 4284512403, 4291005402, 4287401100, 4285839820, 4291671396}
-	timebars     [timebarN][]int // height of each bar set
-	timebari     int
-	timebarScale int = 64
-)
-
-func (g *Game) renderDebugInfo() {
-	// Render information
-	if igwrap.Begin("F3", nil, 0) {
-		igwrap.TextBlank()
-
-		igwrap.TextBackground("WorldRender: lastframe %.3fms", float64(io.Diagnostics.Times.Render.Nanoseconds())/float64(time.Millisecond))
-		igwrap.TextBackground("TimeBars:")
-		pad := igwrap.Vec2f(imgui.CurrentStyle().ItemSpacing())
-		imgui.SameLine()
-		igwrap.TextBackgroundV(colorset[0], pad, "Depthmap")
-		imgui.SameLine()
-		igwrap.TextBackgroundV(colorset[1], pad, "Geometry")
-		imgui.SameLine()
-		igwrap.TextBackgroundV(colorset[2], pad, "SSAO")
-		imgui.SameLine()
-		igwrap.TextBackgroundV(colorset[3], pad, "Lighting")
-		imgui.SameLine()
-		igwrap.TextBackgroundV(colorset[4], pad, "Postfx")
-		imgui.SameLine()
-		igwrap.TextBackground("[Hover]")
-		if imgui.IsItemHoveredV(imgui.HoveredFlagsAllowWhenDisabled) {
-			_, wheely := imgui.CurrentIO().MouseWheel()
-			if math.Abs(float64(wheely)) > 1e-3 {
-				if wheely > 0 {
-					timebarScale = util.Mini(timebarScale*2, 128)
-				} else { // < 0
-					timebarScale = util.Maxi(timebarScale/2, 1)
-				}
-			}
-		}
-
-		isize := asset.WorldTextureAtlas.ImageSize
-		igwrap.TextBackground("Texture Atlas Size: (%dx%d)", isize[0], isize[1])
-		imgui.SameLine()
-		igwrap.TextBackground("[Scroll]")
-		if imgui.IsItemHoveredV(imgui.HoveredFlagsAllowWhenDisabled) {
-			_, wheely := imgui.CurrentIO().MouseWheel()
-			if math.Abs(float64(wheely)) > 1e-3 {
-				atlasScale = util.Maxf(1, atlasScale+wheely)
-			}
-			imgui.BeginTooltip()
-			igwrap.Image(g.render.texture.Handle(), isize.ToFloat32().Multiply(atlasScale), itype.Rectf{0, 0, 1, 1})
-			imgui.EndTooltip()
-		}
-
-		imgui.End()
-	}
-
-	// Draw Textures
-	imgui.SetNextWindowPosV(imgui.Vec2{X: float32(g.render.lastDisplaySize[0]), Y: 0}, imgui.ConditionAlways, imgui.Vec2{X: 1, Y: 0})
-	if igwrap.Begin("Renderer Textures/Outputs", nil, igwrap.WindowFlagsOverlay) {
-		imgui.PushStyleVarVec2(imgui.StyleVarItemSpacing, imgui.Vec2{})
-
-		imageSize := g.render.lastDisplaySize.ToFloat32().Multiply(0.25)
-		imageSize[1] -= imgui.CurrentStyle().WindowPadding().Y / 2
-		imageSize[0] = imageSize[1] / float32(g.render.lastDisplaySize[1]) * float32(g.render.lastDisplaySize[0])
-
-		igwrap.Image(g.render.gbuffer.pos, imageSize, itype.Rectf{0, 0, 1, 1})
-		igwrap.Image(g.render.gbuffer.norm, imageSize, itype.Rectf{0, 0, 1, 1})
-		igwrap.Image(g.render.gbuffer.color, imageSize, itype.Rectf{0, 0, 1, 1})
-		igwrap.Image(g.render.ssao.ambient, imageSize, itype.Rectf{0, 0, 1, 1})
-
-		imgui.PopStyleVar()
-		imgui.End()
-	}
-
-	// Push the next bar
-	timebars[timebari] = []int{
-		int(io.Diagnostics.Times.RenderPasses.Depthmap.Nanoseconds()),
-		int(io.Diagnostics.Times.RenderPasses.Geometry.Nanoseconds()),
-		int(io.Diagnostics.Times.RenderPasses.SSAO.Nanoseconds()),
-		int(io.Diagnostics.Times.RenderPasses.Lighting.Nanoseconds()),
-		int(io.Diagnostics.Times.RenderPasses.Postfx.Nanoseconds()),
-	}
-	timebari++
-	if timebari >= len(timebars) {
-		timebari = 0
-	}
-
-	// Draw time bars
-	size := g.render.lastDisplaySize
-	dl := imgui.BackgroundDrawList()
-	for i, l := range timebars {
-		ex := 0
-		for j, d := range l {
-			d = d * timebarScale / 1024 / 1024
-			dl.AddLine(imgui.Vec2{X: float32(i), Y: float32(size[1] - ex)}, imgui.Vec2{X: float32(i), Y: float32(size[1] - ex - d)}, colorset[j])
-			ex += d
-		}
-	}
-}
--- a/internal/io/io.go
+++ b/internal/io/io.go
@@ -12,10 +12,6 @@ var (
 	ClearColor itype.Vec4f // Clear color of the renderer.
 	FogColor   itype.Vec4f // Color of the fog. Changes if the player is e.g. under water

-	// Directions are not always normalized.
-	ViewPos, ViewDir     itype.Vec3d // Position and Direction of the player view.
-	RenderPos, RenderDir itype.Vec3d // Position and Direction of view for the current render pass. Might be different for e.g. lighting passes
-
 	ShowDebugInfo bool // Show debug info (F3 screen)?

 	// Per-Frame Diagnostics information
@@ -32,4 +28,6 @@ var (
 			}
 		}
 	}
+
+	StepFactors []float64
 )
--- a/internal/util/clock.go
+++ b/internal/util/clock.go
@@ -17,8 +17,9 @@ func NewClock() (c *Clock) {
 // Restart resets the start time.
 // It also returns the elapsed time.
 func (c *Clock) Restart() (t time.Duration) {
-	t = time.Since(c.t)
-	c.t = time.Now()
+	now := time.Now()
+	t = now.Sub(c.t)
+	c.t = now
 	return
 }

--- a/internal/util/itype/const.go
+++ b/internal/util/itype/const.go
@@ -0,0 +1,5 @@
+package itype
+
+var (
+	ProjectName = "Gl01-igExp"
+)
--- a/internal/util/slice.go
+++ b/internal/util/slice.go
@@ -0,0 +1,9 @@
+package util
+
+func Slice2Float32[T int | float64](s []T) (sf []float32) {
+	sf = make([]float32, len(s))
+	for i := range s {
+		sf[i] = float32(s[i])
+	}
+	return
+}
--- a/internal/work/work.go
+++ b/internal/work/work.go
@@ -0,0 +1,144 @@
+package work
+
+import (
+	"math"
+	"slices"
+	"time"
+
+	"edgaru089.ink/go/gl01/internal/igwrap"
+	"edgaru089.ink/go/gl01/internal/io"
+	"github.com/inkyblackness/imgui-go/v4"
+)
+
+var state struct {
+	inst [2000]*WorkerInstance
+	buf  []*WorkerInstance
+
+	steps int
+
+	first_step int
+
+	iter_disabled bool
+}
+
+type iter_info struct {
+	first_step, last_step int
+	step_count            int
+
+	max_score float64
+
+	factor float64
+}
+
+var stats []iter_info
+
+func Init() {
+	for i := range state.inst {
+		inst := RandomInstance()
+		state.inst[i] = &inst
+	}
+}
+
+func Update(delta time.Duration) {
+	state.steps++
+
+	for i := range state.inst {
+		state.inst[i].Step(state.steps)
+	}
+
+	slices.SortFunc(state.inst[:], func(x, y *WorkerInstance) int {
+		if x.score > y.score {
+			return -1
+		} else if x.score == y.score && x.pos.Sub(x.target).Len() < y.pos.Sub(y.target).Len() {
+			return -1
+		} else {
+			return 1
+		}
+	})
+
+	if imgui.Checkbox("Disable Iteration", &state.iter_disabled) {
+
+	}
+
+	if !state.iter_disabled && (imgui.Button("Iterate") || state.inst[50].score > 0) {
+
+		factor := 0.0
+		for _, f := range io.StepFactors {
+			factor += f
+		}
+		factor /= float64(len(io.StepFactors))
+		io.StepFactors = io.StepFactors[0:0]
+
+		// push stats
+		stats = append(stats, iter_info{
+			first_step: state.first_step,
+			last_step:  state.steps,
+			step_count: state.steps - state.first_step,
+			max_score:  state.inst[0].score,
+			factor:     factor,
+		})
+		state.first_step = state.steps
+
+		state.buf = state.buf[:0]
+		for i := range 50 {
+			state.inst[i].score = 0
+			state.buf = append(state.buf, state.inst[i])
+			for range 2000/50 - 1 {
+				inst := state.inst[i].Offspring()
+				inst.step0 = state.steps
+				state.buf = append(state.buf, &inst)
+			}
+		}
+		copy(state.inst[:], state.buf)
+	}
+
+	for i := range 20 {
+		igwrap.Text("Score: %f\n", state.inst[i].score)
+	}
+
+	if igwrap.Begin("Graph", nil, 0) {
+		imgui.PushItemWidth(-math.SmallestNonzeroFloat32)
+		s := make([]float32, len(stats))
+		if len(stats) < 1 {
+			goto err
+		}
+
+		for i, st := range stats {
+			s[i] = float32(st.step_count)
+		}
+		if len(s) > 400 {
+			s = s[len(s)-400:]
+		}
+		imgui.PlotLinesV(
+			"##Step Count",
+			s,
+			0,
+			"",
+			math.MaxFloat32,
+			math.MaxFloat32,
+			imgui.Vec2{0, 200},
+		)
+
+		s = make([]float32, len(stats))
+		for i, st := range stats {
+			s[i] = float32(st.factor)
+		}
+		if len(s) > 400 {
+			s = s[len(s)-400:]
+		}
+		imgui.PlotLinesV(
+			"##Factor",
+			s,
+			0,
+			"",
+			math.MaxFloat32,
+			math.MaxFloat32,
+			imgui.Vec2{0, 200},
+		)
+
+	err:
+		imgui.PopItemWidth()
+		imgui.End()
+	}
+
+}
--- a/internal/work/worker.go
+++ b/internal/work/worker.go
@@ -0,0 +1,122 @@
+package work
+
+import (
+	"math/rand"
+
+	"edgaru089.ink/go/gl01/internal/io"
+	"github.com/go-gl/mathgl/mgl64"
+)
+
+type Worker struct {
+	t1, t2 mgl64.Mat4
+	t3     mgl64.Mat2x4
+}
+
+func randomSlice64(s []float64) {
+	for i := range s {
+		s[i] = rand.NormFloat64()
+	}
+}
+
+// RandomWorker generates a random worker.
+func RandomWorker() (w Worker) {
+	randomSlice64(w.t1[:])
+	randomSlice64(w.t2[:])
+	randomSlice64(w.t3[:])
+	return
+}
+
+func mutateSlice64(s []float64, stddev float64) {
+	for i := range s {
+		s[i] = rand.NormFloat64()*stddev + s[i]
+	}
+}
+
+// Offspring generates an offspring with the given variance.
+func (w *Worker) Offspring(stddev float64) (s Worker) {
+	s = *w
+	mutateSlice64(s.t1[:], stddev)
+	mutateSlice64(s.t2[:], stddev)
+	mutateSlice64(s.t3[:], stddev)
+	return
+}
+
+// Calculate runs a Vec4 through the Worker.
+func (w *Worker) Calculate(input mgl64.Vec4) (output mgl64.Vec2) {
+	imm1 := w.t1.Mul4x1(input)
+	imm2 := w.t2.Mul4x1(imm1)
+	output = w.t3.Mul4x1(imm2)
+	return
+}
+
+// WorkerInstance is a instance of a worker.
+type WorkerInstance struct {
+	worker Worker
+	pos    mgl64.Vec2
+	target mgl64.Vec2
+
+	score float64
+
+	distance float64
+	step0    int
+}
+
+var (
+	Radius float64 = 10 // Radius of all worker instances
+	Step   float64 = 1  // Move length of a advance step
+
+	OffspringStdVar float64 = 0.5
+
+	Score float64 = 1
+
+	TargetAreaSize = mgl64.Vec2{750, 750}
+)
+
+func randomTarget() (t mgl64.Vec2) {
+	return mgl64.Vec2{
+		TargetAreaSize[0] * (rand.Float64() - .5),
+		TargetAreaSize[1] * (rand.Float64() - .5),
+	}
+}
+
+func (i *WorkerInstance) Step(step_num int) {
+	output := i.worker.Calculate(mgl64.Vec4{
+		i.pos[0],
+		i.pos[1],
+		i.target[0],
+		i.target[1],
+	})
+
+	direction := mgl64.Vec2{output[0], output[1]}.Normalize()
+	step := direction.Mul(Step)
+
+	i.pos = i.pos.Add(step)
+	if i.pos.Sub(i.target).Len() < Radius {
+		// Score!
+		i.score += Score
+
+		io.StepFactors = append(io.StepFactors, (float64(step_num-i.step0)*Step)/i.distance)
+
+		i.target = randomTarget()
+		i.step0 = step_num
+		i.distance = i.pos.Sub(i.target).Len()
+	}
+}
+
+func (i *WorkerInstance) Offspring() (it WorkerInstance) {
+	it.pos = randomTarget()
+	it.target = randomTarget()
+	it.distance = it.pos.Sub(it.target).Len()
+	it.score = 0
+	it.worker = i.worker.Offspring(OffspringStdVar)
+	return
+}
+
+func RandomInstance() (i WorkerInstance) {
+	i.worker = RandomWorker()
+	i.pos = randomTarget()
+	i.target = randomTarget()
+	i.distance = i.pos.Sub(i.target).Len()
+	i.score = 0
+	return
+}
--- a/internal/world/block.go
+++ b/internal/world/block.go
@@ -1,212 +0,0 @@
-package world
-
-import (
-	"fmt"
-
-	"edgaru089.ink/go/gl01/internal/util/itype"
-)
-
-// BlockRenderType is an enum describing the rendering process of a block
-type BlockRenderType int
-
-const (
-	OneTexture      BlockRenderType = iota // Render with one texture of the same on all faces, "Name.png"
-	ThreeTexture                           // Render with one texture on the top, one around the sides, and one on the bottom, "Name_top/side/bot.png,"
-	SixTexture                             // Render with six different textures on six faces, "Name_x+/x-/y+/y-/z+/z-.png"
-	CustomRendering                        // Rendering calls BlockAppearance.CustomRenderAppend()
-)
-
-// BlockAppearance describes basic appearance of a kind of block.
-type BlockAppearance struct {
-	Name        string // A short name, like "stone" or "dirt", used for texture lookups
-	Transparent bool   // Is block transparent, i.e., does not block nearby blocks in rendering?
-	NotSolid    bool   // Is block not solid, i.e., has no hitbox at all? (this makes the zero value reasonable)
-	Light       int    // The light level it emits, 0 is none
-
-	Hitbox  []itype.Boxd // Hitbox, in block-local coordinates; empty slice means a default hitbox of 1x1x1
-	Lookbox []itype.Boxd // Selection hitbox, hit only by the view ray; empty means Hitbox[]
-
-	RenderType BlockRenderType // Rendering type, defaults to OneTexture (zero value)
-
-	// Called on render if RenderType == CustomRendering.
-	//
-	// Be sure to return vertexArray at the end of the function (in case it got reallocated)!!!!
-	CustomRenderAppend func(
-		position itype.Vec3i,
-		aux int,
-		data itype.Dataset,
-		world *World,
-		vertexArray []Vertex,
-		vertexArrayWater []Vertex,
-	) (verts []Vertex, waters []Vertex)
-}
-
-// BlockBehaviour describes a kind of block of the same Major ID.
-type BlockBehaviour interface {
-
-	// Static returns if the Behaviour is "static", i.e., the Appearance does not
-	// change with position, Minor ID or Dataset. Static Behaviours are cached
-	// by the renderer and only generated once.
-	//
-	// Static implies RequireDataset = false and RequireBlockUpdate = false.
-	Static() bool
-
-	// RequireDataset returns if the type of block requires a Dataset attached.
-	RequireDataset() bool
-
-	// RequireBlockUpdate return if BlockUpdate should be called if a neighboring
-	// block has changed. Blocks not requiring BlockUpdate does not change at all.
-	RequireBlockUpdate() bool
-
-	// Appearance returns the Appearance of the block at global position Position,
-	// with Minor ID aux, and Dataset data.
-	//
-	// If RequireDataset if false, data is nil.
-	Appearance(position itype.Vec3i, aux int, data itype.Dataset, world *World) BlockAppearance
-
-	// BlockUpdate is called when RequireBlockUpdate is true and the block at
-	// global position Position, with Minor ID aux, and Dataset data has a neighbor
-	// that changed state. A block will only be updated once in a tick.
-	//
-	// If RequireDataset if false, data is nil.
-	//
-	// Return true if this block also changed state, false otherwise.
-	BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset, world *World) bool
-
-	// Break is called when the block is broken by natural means.
-	Break(position itype.Vec3i, aux int, data itype.Dataset, world *World)
-}
-
-type blockBehaviourStatic struct {
-	app BlockAppearance
-}
-
-func (blockBehaviourStatic) Static() bool             { return true }
-func (blockBehaviourStatic) RequireDataset() bool     { return false }
-func (blockBehaviourStatic) RequireBlockUpdate() bool { return false }
-func (b blockBehaviourStatic) Appearance(position itype.Vec3i, aux int, data itype.Dataset, world *World) BlockAppearance {
-	return b.app
-}
-func (blockBehaviourStatic) BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset, world *World) bool {
-	return false
-}
-func (blockBehaviourStatic) Break(position itype.Vec3i, aux int, data itype.Dataset, world *World) {}
-
-// BlockBehaviourStatic returns a Static BlockBehaviour that has the given BlockAppearance.
-func BlockBehaviourStatic(app BlockAppearance) BlockBehaviour {
-	return blockBehaviourStatic{app: app}
-}
-
-var behaviour map[int]BlockBehaviour = make(map[int]BlockBehaviour)
-var appearance map[int]BlockAppearance = make(map[int]BlockAppearance)
-var behaviourDoneRegister bool
-
-// RegisterBlockBehaviour registers behaviour with the given id.
-//
-// If the id is already taken, or id == 0, false is returned and nothing is done.
-// Otherwise, true is returned and the block is registered.
-func RegisterBlockBehaviour(id int, b BlockBehaviour) bool {
-	if _, ok := behaviour[id]; behaviourDoneRegister || id == 0 || ok {
-		return false
-	}
-
-	behaviour[id] = b
-	return true
-}
-
-// DoneRegisteringBlockBehaviour is to be called after Registering BlockBehaviour,
-// i.e., in Post-Init() initializations.
-func DoneRegisteringBlockBehaviour() {
-	for id, b := range behaviour {
-		if b.Static() {
-			appearance[id] = b.Appearance(itype.Vec3i{}, 0, nil, nil)
-		}
-	}
-
-	behaviourDoneRegister = true
-}
-
-// GetBlockAppearance gets the block appearance of the given block in the fastest way possible.
-func GetBlockAppearance(position itype.Vec3i, id, aux int, data itype.Dataset, world *World) BlockAppearance {
-	if app, ok := appearance[id]; ok { // Cache
-		if len(app.Hitbox) == 0 {
-			app.Hitbox = []itype.Boxd{{
-				OffX: 0, OffY: 0, OffZ: 0,
-				SizeX: 1, SizeY: 1, SizeZ: 1,
-			}}
-		}
-		if len(app.Lookbox) == 0 {
-			app.Lookbox = app.Hitbox
-		}
-		return app
-	}
-
-	// Slow way
-	b, ok := behaviour[id]
-	if !ok {
-		panic(fmt.Sprint("invalid block type ", id))
-	}
-
-	app := b.Appearance(position, aux, data, world)
-	if len(app.Hitbox) == 0 {
-		app.Hitbox = []itype.Boxd{{
-			OffX: 0, OffY: 0, OffZ: 0,
-			SizeX: 1, SizeY: 1, SizeZ: 1,
-		}}
-	}
-	if len(app.Lookbox) == 0 {
-		app.Lookbox = app.Hitbox
-	}
-	return app
-}
-
-// GetBlockBehaviour gets the block behaviour of the given id, or nil if not present.
-func GetBlockBehaviour(id int) BlockBehaviour {
-	return behaviour[id]
-}
-
-// Block is a structure to store and pass Blocks around.
-type Block struct {
-	Id, Aux   int
-	Dataset   itype.Dataset
-	Behaviour BlockBehaviour
-	World     *World
-}
-
-// Appearance is a shortcut for Behaviour.Appearance().
-// It returns the Appearance of the block with the given parameters.
-func (b Block) Appearance(position itype.Vec3i) BlockAppearance {
-	if b.Behaviour == nil {
-		return BlockAppearance{}
-	}
-	app := b.Behaviour.Appearance(position, b.Aux, b.Dataset, b.World)
-	if !app.NotSolid && len(app.Hitbox) == 0 {
-		app.Hitbox = []itype.Boxd{{
-			OffX: 0, OffY: 0, OffZ: 0,
-			SizeX: 1, SizeY: 1, SizeZ: 1,
-		}}
-	}
-	if len(app.Lookbox) == 0 {
-		if len(app.Hitbox) == 0 {
-			app.Lookbox = []itype.Boxd{{
-				OffX: 0, OffY: 0, OffZ: 0,
-				SizeX: 1, SizeY: 1, SizeZ: 1,
-			}}
-		} else {
-			app.Lookbox = app.Hitbox
-		}
-	}
-	return app
-}
-
-// BlockUpdate is a shortcut for Behaviour.BlockUpdate().
-// It is called when RequireBlockUpdate is true and the block at
-// global position Position, with Minor ID aux, and Dataset data has a neighbor
-// that changed state. A block will only be updated once in a tick.
-//
-// If RequireDataset if false, data is nil.
-//
-// Return true if this block also changed state, false otherwise.
-func (b Block) BlockUpdate(position itype.Vec3i) bool {
-	return b.Behaviour.BlockUpdate(position, b.Aux, b.Dataset, b.World)
-}
--- a/internal/world/block.go.new
+++ b/internal/world/block.go.new
@@ -1,160 +0,0 @@
-package world
-
-import (
-	"fmt"
-
-	"github.com/Edgaru089/gl01/internal/util/itype"
-)
-
-// BlockRenderType is an enum describing the rendering process of a block
-type BlockRenderType int
-
-const (
-	OneTexture      BlockRenderType = iota // Render with one texture of the same on all faces, "Name.png"
-	ThreeTexture                           // Render with one texture on the top, one around the sides, and one on the bottom, "Name_top/side/bot.png,"
-	SixTexture                             // Render with six different textures on six faces, "Name_x+/x-/y+/y-/z+/z-.png"
-	CustomRendering                        // Rendering calls BlockAppearance.CustomRenderAppend()
-)
-
-// BlockAppearance describes basic appearance of a kind of block.
-type BlockAppearance struct {
-	Name        string // A short name, like "stone" or "dirt", used for texture lookups
-	Transparent bool   // Is block transparent?
-	NotSolid    bool   // Is block not solid, i.e., has no solid hitbox? (this makes the zero value reasonable)
-	Light       int    // The light level it emits, 0 is none
-
-	Hitbox []itype.Boxd // Hitbox, in block-local coordinates; empty slice means a default hitbox of 1x1x1
-
-	RenderType BlockRenderType // Rendering type, defaults to OneTexture (zero value)
-
-	// Called on render if RenderType == CustomRendering.
-	//
-	// Be sure to return vertexArray at the end of the function (in case it got reallocated)!!!!
-	CustomRenderAppend func(
-		position itype.Vec3i,
-		aux int,
-		data itype.Dataset,
-		vertexArray []Vertex,
-	) []Vertex
-}
-
-// BlockBehaviour describes a kind of block of the same Major ID.
-type BlockBehaviour interface {
-
-	// Static returns if the Behaviour is "static", i.e., the Appearance does not
-	// change with position, Minor ID or Dataset. Static Behaviours are cached
-	// by the renderer and only generated once.
-	//
-	// Static implies RequireDataset = false and RequireBlockUpdate = false.
-	Static() bool
-
-	// RequireDataset returns if the type of block requires a Dataset attached.
-	RequireDataset() bool
-
-	// RequireBlockUpdate return if BlockUpdate should be called if a neighboring
-	// block has changed. Blocks not requiring BlockUpdate does not change at all.
-	RequireBlockUpdate() bool
-
-	// Appearance returns the Appearance of the block at global position Position,
-	// with Minor ID aux, and Dataset data.
-	//
-	// If RequireDataset if false, data is nil.
-	Appearance(position itype.Vec3i, aux int, data itype.Dataset) BlockAppearance
-
-	// BlockUpdate is called when RequireBlockUpdate is true and the block at
-	// global position Position, with Minor ID aux, and Dataset data has a neighbor
-	// that changed state. A block will only be updated once in a tick.
-	//
-	// If RequireDataset if false, data is nil.
-	//
-	// Return true if this block also changed state, false otherwise.
-	BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset) bool
-}
-
-type blockBehaviourStatic struct {
-	app BlockAppearance
-}
-
-func (blockBehaviourStatic) Static() bool             { return true }
-func (blockBehaviourStatic) RequireDataset() bool     { return false }
-func (blockBehaviourStatic) RequireBlockUpdate() bool { return false }
-func (b blockBehaviourStatic) Appearance(position itype.Vec3i, aux int, data itype.Dataset) BlockAppearance {
-	return b.app
-}
-func (blockBehaviourStatic) BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset) bool {
-	return false
-}
-
-// BlockBehaviourStatic returns a Static BlockBehaviour that has the given BlockAppearance.
-func BlockBehaviourStatic(app BlockAppearance) BlockBehaviour {
-	return blockBehaviourStatic{app: app}
-}
-
-var behaviour map[int]BlockBehaviour = make(map[int]BlockBehaviour)
-var appearance map[int]BlockAppearance = make(map[int]BlockAppearance)
-var behaviourDoneRegister bool
-
-// RegisterBlockBehaviour registers behaviour with the given id.
-//
-// If the id is already taken, or id == 0, false is returned and nothing is done.
-// Otherwise, true is returned and the block is registered.
-func RegisterBlockBehaviour(id int, b BlockBehaviour) bool {
-	if _, ok := behaviour[id]; behaviourDoneRegister || id == 0 || ok {
-		return false
-	}
-
-	behaviour[id] = b
-	return true
-}
-
-// DoneRegisteringBlockBehaviour is to be called after Registering BlockBehaviour,
-// i.e., in Post-Init() initializations.
-func DoneRegisteringBlockBehaviour() {
-	for id, b := range behaviour {
-		if b.Static() {
-			appearance[id] = b.Appearance(itype.Vec3i{}, 0, nil)
-		}
-	}
-
-	behaviourDoneRegister = true
-}
-
-// GetBlockAppearance gets the block appearance of the given block in the fastest way possible.
-func GetBlockAppearance(position itype.Vec3i, id, aux int, data itype.Dataset) BlockAppearance {
-	if app, ok := appearance[id]; ok { // Cache
-		if len(app.Hitbox) == 0 {
-			app.Hitbox = []itype.Boxd{{
-				OffX: 0, OffY: 0, OffZ: 0,
-				SizeX: 1, SizeY: 1, SizeZ: 1,
-			}}
-		}
-		return app
-	}
-
-	// Slow way
-	b, ok := behaviour[id]
-	if !ok {
-		panic(fmt.Sprint("invalid block type ", id))
-	}
-
-	app := b.Appearance(position, aux, data)
-	if len(app.Hitbox) == 0 {
-		app.Hitbox = []itype.Boxd{{
-			OffX: 0, OffY: 0, OffZ: 0,
-			SizeX: 1, SizeY: 1, SizeZ: 1,
-		}}
-	}
-	return app
-}
-
-// GetBlockBehaviour gets the block behaviour of the given id, or nil if not present.
-func GetBlockBehaviour(id int) BlockBehaviour {
-	return behaviour[id]
-}
-
-// Block is a structure to store and pass Blocks around.
-type Block struct {
-	Id, Aux   int
-	Dataset   itype.Dataset
-	Behaviour BlockBehaviour
-}
--- a/internal/world/blocks/default.go
+++ b/internal/world/blocks/default.go
@@ -1,57 +0,0 @@
-package blocks
-
-import "edgaru089.ink/go/gl01/internal/world"
-
-const (
-	Nil = iota
-
-	Debug
-	DebugDir
-	DebugNonexist
-
-	Stone
-	Dirt
-	Grass
-	Bedrock
-	Sand
-	LogOak
-	LeavesOak
-	PlanksOak
-
-	Water
-
-	Glass
-
-	Slab
-
-	Count
-)
-
-func init() {
-
-	world.RegisterBlockBehaviour(1, world.BlockBehaviourStatic(world.BlockAppearance{Name: "debug"}))
-	world.RegisterBlockBehaviour(2, world.BlockBehaviourStatic(world.BlockAppearance{Name: "debug_dir", RenderType: world.SixTexture}))
-	world.RegisterBlockBehaviour(3, world.BlockBehaviourStatic(world.BlockAppearance{Name: "debug_nonexist"}))
-
-	world.RegisterBlockBehaviour(4, world.BlockBehaviourStatic(world.BlockAppearance{Name: "stone"}))
-	world.RegisterBlockBehaviour(5, world.BlockBehaviourStatic(world.BlockAppearance{Name: "dirt"}))
-	world.RegisterBlockBehaviour(6, world.BlockBehaviourStatic(world.BlockAppearance{Name: "grass", RenderType: world.ThreeTexture}))
-	world.RegisterBlockBehaviour(7, world.BlockBehaviourStatic(world.BlockAppearance{Name: "bedrock"}))
-	world.RegisterBlockBehaviour(8, world.BlockBehaviourStatic(world.BlockAppearance{Name: "sand"}))
-	world.RegisterBlockBehaviour(9, world.BlockBehaviourStatic(world.BlockAppearance{Name: "log_oak", RenderType: world.ThreeTexture}))
-	world.RegisterBlockBehaviour(10, world.BlockBehaviourStatic(world.BlockAppearance{Name: "leaves_oak", Transparent: true}))
-
-	world.RegisterBlockBehaviour(11, world.BlockBehaviourStatic(world.BlockAppearance{Name: "planks_oak"}))
-
-	world.RegisterBlockBehaviour(12, WaterBehaviour{})
-
-	world.RegisterBlockBehaviour(13, world.BlockBehaviourStatic(world.BlockAppearance{Name: "glass", Transparent: true}))
-
-	world.RegisterBlockBehaviour(14, SlabBehaviour{})
-
-	if Count != 15 {
-		panic("world.DefaultBlocks: block count not correct (check for block numbering in default_blocks.go)")
-	}
-
-	world.DoneRegisteringBlockBehaviour()
-}
--- a/internal/world/blocks/helper_appendface.go
+++ b/internal/world/blocks/helper_appendface.go
@@ -1,186 +0,0 @@
-package blocks
-
-import (
-	"edgaru089.ink/go/gl01/internal/asset"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-// texname is the full filename of the texture file (with .png)
-// faceOffset is added to each vertex
-func appendFace(face itype.Direction, pos itype.Vec3i, texname string, faceOffset itype.Vec3f, arr []world.Vertex) []world.Vertex {
-
-	switch face {
-	case itype.XPlus: // X+
-		arr = append(arr,
-			//     Vertex Position  Normal Vector(normalized)  Texture Coord  Light
-			world.Vertex{pos.Addv(1, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(1, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 1}, 16},
-		)
-	case itype.XMinus: // X-
-		arr = append(arr,
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(0, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(0, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YPlus: // Y+
-		arr = append(arr,
-			world.Vertex{pos.Addv(0, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YMinus: // Y-
-		arr = append(arr,
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(0, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZPlus: // Z+
-		arr = append(arr,
-			world.Vertex{pos.Addv(0, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.Addv(1, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(0, 1, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 1).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZMinus: // Z-
-		arr = append(arr,
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(0, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.Addv(1, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(0, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.Addv(1, 1, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.Addv(1, 0, 0).ToFloat32().Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 1}, 16},
-		)
-	}
-
-	texrect := asset.WorldTextureAtlas.RectNormalized(texname)
-	for i := len(arr) - 6; i < len(arr); i++ {
-		arr[i].Texture[0] = texrect.Left + arr[i].Texture[0]*texrect.Width
-		arr[i].Texture[1] = texrect.Top + arr[i].Texture[1]*texrect.Height
-	}
-
-	return arr
-}
-
-// same as appendFace
-// faceSize is in [0, 1]
-// textureSubrect is normalized, also in [0, 1]; coords start from the left-top
-func appendFaceSized(face itype.Direction, pos itype.Vec3i, texname string, faceSize itype.Vec3f, faceOffset itype.Vec3f, textureSubrect itype.Rectf, arr []world.Vertex) []world.Vertex {
-
-	switch face {
-	case itype.XPlus: // X+
-		arr = append(arr,
-			//     Vertex Position  Normal Vector(normalized)  Texture Coord  Light
-			world.Vertex{pos.ToFloat32().Addv(1, 0, 0).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(1, faceSize[1], 0).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(1, faceSize[1], faceSize[2]).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(1, 0, 0).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(1, faceSize[1], faceSize[2]).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(1, 0, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 1}, 16},
-		)
-	case itype.XMinus: // X-
-		arr = append(arr,
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], faceSize[2]).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], 0).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 0, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], faceSize[2]).
-				Add(faceOffset), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YPlus: // Y+
-		arr = append(arr,
-			world.Vertex{pos.ToFloat32().Addv(0, 1, 0).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 1, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 1, 0).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 1, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 1, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 1, 0).
-				Add(faceOffset), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YMinus: // Y-
-		arr = append(arr,
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, 0).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 0, faceSize[2]).
-				Add(faceOffset), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZPlus: // Z+
-		arr = append(arr,
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], faceSize[1], 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, 1).
-				Add(faceOffset), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZMinus: // Z-
-		arr = append(arr,
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, faceSize[1], 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], faceSize[1], 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(0, 0, 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], faceSize[1], 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			world.Vertex{pos.ToFloat32().Addv(faceSize[0], 0, 0).
-				Add(faceOffset), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 1}, 16},
-		)
-	}
-
-	texrect := asset.WorldTextureAtlas.RectNormalized(texname)
-	for i := len(arr) - 6; i < len(arr); i++ {
-		arr[i].Texture[0] = texrect.Left + (textureSubrect.Left+textureSubrect.Width*arr[i].Texture[0])*texrect.Width
-		arr[i].Texture[1] = texrect.Top + (textureSubrect.Top+textureSubrect.Height*arr[i].Texture[1])*texrect.Height
-	}
-
-	return arr
-}
--- a/internal/world/blocks/slab.go
+++ b/internal/world/blocks/slab.go
@@ -1,100 +0,0 @@
-package blocks
-
-import (
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-type SlabBehaviour struct{}
-
-func (SlabBehaviour) Static() bool             { return true }
-func (SlabBehaviour) RequireDataset() bool     { return false }
-func (SlabBehaviour) RequireBlockUpdate() bool { return false }
-func (SlabBehaviour) Appearance(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) world.BlockAppearance {
-
-	var hitbox itype.Boxd
-	if aux > 0 { // Bottom slab
-		hitbox = itype.Boxd{0, 0, 0, 1, 0.5, 1}
-	} else { // Top slab
-		hitbox = itype.Boxd{0, 0.5, 0, 1, 0.5, 1}
-	}
-
-	return world.BlockAppearance{
-		Name:        "",
-		Transparent: true,
-		NotSolid:    false,
-		Hitbox:      []itype.Boxd{hitbox},
-		Lookbox:     []itype.Boxd{hitbox},
-
-		RenderType: world.CustomRendering,
-		CustomRenderAppend: func(
-			position itype.Vec3i,
-			aux int,
-			data itype.Dataset,
-			w *world.World,
-			vertexArray []world.Vertex, vertsWater []world.Vertex) (verts, waters []world.Vertex) {
-
-			var offset itype.Vec3f
-			if aux < 0 {
-				offset = itype.Vec3f{0, 0.5, 0}
-				aux = -aux
-			}
-
-			var name string
-			switch aux {
-			case Stone:
-				name = "stone"
-			case Sand:
-				name = "sand"
-			case PlanksOak:
-				name = "planks_oak"
-			}
-
-			vertexArray = appendFace(itype.YMinus, position, name+".png", itype.Vec3f{0, 0, 0}.Add(offset), vertexArray)
-			vertexArray = appendFace(itype.YPlus, position, name+".png", itype.Vec3f{0, -0.5, 0}.Add(offset), vertexArray)
-
-			vertexArray = appendFaceSized(
-				itype.XPlus,
-				position,
-				name+".png",
-				itype.Vec3f{1, 0.5, 1},
-				itype.Vec3f{0, 0, 0}.Add(offset),
-				itype.Rectf{0, 0, 1, 0.5},
-				vertexArray,
-			)
-			vertexArray = appendFaceSized(
-				itype.XMinus,
-				position,
-				name+".png",
-				itype.Vec3f{1, 0.5, 1},
-				itype.Vec3f{0, 0, 0}.Add(offset),
-				itype.Rectf{0, 0, 1, 0.5},
-				vertexArray,
-			)
-			vertexArray = appendFaceSized(
-				itype.ZPlus,
-				position,
-				name+".png",
-				itype.Vec3f{1, 0.5, 1},
-				itype.Vec3f{0, 0, 0}.Add(offset),
-				itype.Rectf{0, 0, 1, 0.5},
-				vertexArray,
-			)
-			vertexArray = appendFaceSized(
-				itype.ZMinus,
-				position,
-				name+".png",
-				itype.Vec3f{1, 0.5, 1},
-				itype.Vec3f{0, 0, 0}.Add(offset),
-				itype.Rectf{0, 0, 1, 0.5},
-				vertexArray,
-			)
-
-			return vertexArray, vertsWater
-		},
-	}
-}
-func (SlabBehaviour) BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) bool {
-	return false
-}
-func (SlabBehaviour) Break(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) {}
--- a/internal/world/blocks/water.go
+++ b/internal/world/blocks/water.go
@@ -1,38 +0,0 @@
-package blocks
-
-import (
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"edgaru089.ink/go/gl01/internal/world"
-)
-
-type WaterBehaviour struct{}
-
-func (WaterBehaviour) Static() bool             { return false }
-func (WaterBehaviour) RequireDataset() bool     { return false }
-func (WaterBehaviour) RequireBlockUpdate() bool { return false }
-func (WaterBehaviour) Appearance(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) world.BlockAppearance {
-	return world.BlockAppearance{
-		Name:        "water",
-		Transparent: true,
-		NotSolid:    true,
-
-		RenderType: world.CustomRendering,
-		CustomRenderAppend: func(
-			position itype.Vec3i,
-			aux int,
-			data itype.Dataset,
-			w *world.World,
-			vertexArray []world.Vertex, vertsWater []world.Vertex) (verts, waters []world.Vertex) {
-
-			if block := w.Block(position.Addv(0, 1, 0)); block.Id != Water {
-				return vertexArray, appendFace(itype.YPlus, position, "water.png", itype.Vec3f{0, -0.125, 0}, vertsWater)
-			}
-
-			return vertexArray, vertsWater
-		},
-	}
-}
-func (WaterBehaviour) BlockUpdate(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) bool {
-	return false
-}
-func (WaterBehaviour) Break(position itype.Vec3i, aux int, data itype.Dataset, w *world.World) {}
--- a/internal/world/chunk.go
+++ b/internal/world/chunk.go
@@ -1,103 +0,0 @@
-package world
-
-import (
-	"encoding/gob"
-	"io"
-	"log"
-
-	"edgaru089.ink/go/gl01/internal/util/itype"
-)
-
-const (
-	ChunkSizeX = 16
-	ChunkSizeY = 128
-	ChunkSizeZ = 16
-)
-
-type Chunk struct {
-	X, Z int // Chunk coordinate in global coordinate (y is always zero)
-
-	Id  [ChunkSizeX][ChunkSizeY][ChunkSizeZ]uint16
-	Aux [ChunkSizeX][ChunkSizeY][ChunkSizeZ]int16
-
-	// render data kept unexported (therefore excluded from gob encoding)
-	renderChanged bool
-	vao, vbo      uint32
-	vbolen        int
-	water         struct {
-		vao, vbo uint32
-		vbolen   int
-	}
-	vertUpdate chan [2][]Vertex
-
-	world *World
-}
-
-func (c *Chunk) SetChunkID(x, z int) {
-	c.X = x
-	c.Z = z
-	c.renderChanged = true
-}
-
-func (c *Chunk) SetBlock(x, y, z int, id, aux int) {
-	c.Id[x][y][z] = uint16(id)
-	c.Aux[x][y][z] = int16(aux)
-	c.renderChanged = true
-
-	switch x {
-	case 0:
-		if cb, ok := c.world.Chunks[itype.Vec2i{c.X - 1, c.Z}]; ok {
-			cb.InvalidateRender()
-		}
-	case ChunkSizeX - 1:
-		if cb, ok := c.world.Chunks[itype.Vec2i{c.X + 1, c.Z}]; ok {
-			cb.InvalidateRender()
-		}
-	}
-	switch z {
-	case 0:
-		if cb, ok := c.world.Chunks[itype.Vec2i{c.X, c.Z - 1}]; ok {
-			cb.InvalidateRender()
-		}
-	case ChunkSizeZ - 1:
-		if cb, ok := c.world.Chunks[itype.Vec2i{c.X, c.Z + 1}]; ok {
-			cb.InvalidateRender()
-		}
-	}
-}
-
-// InvalidateRender should be called if a block inside the chunk has changed
-// and the chunk needs to re-rendered.
-func (c *Chunk) InvalidateRender() {
-	c.renderChanged = true
-}
-
-// LoadFromGob loads the chunk from a gob-encoded file.
-func (c *Chunk) LoadFromGob(file io.Reader) {
-	d := gob.NewDecoder(file)
-	err := d.Decode(c)
-	if err != nil {
-		log.Print("LoadFromGob Error: ", err)
-	}
-}
-
-// LoadFromGobIndexed loads the chunk from a gob-encoded file, with the
-// chunk Index overwritten.
-func (c *Chunk) LoadFromGobIndexed(file io.Reader, x, z int) {
-	d := gob.NewDecoder(file)
-	err := d.Decode(c)
-	if err != nil {
-		log.Printf("LoadFromGobIndexed(x=%d, z=%d) Error: %s", x, z, err)
-	}
-	c.X = x
-	c.Z = z
-}
-
-// WriteToGob writes the chunk to a gob-encoded file.
-func (c *Chunk) WriteToGob(file io.Writer) {
-	e := gob.NewEncoder(file)
-	err := e.Encode(c)
-	if err != nil {
-		log.Printf("WriteToGob(x=%d, z=%d) Error: %s", c.X, c.Z, err)
-	}
-}
--- a/internal/world/render.go
+++ b/internal/world/render.go
@@ -1,289 +0,0 @@
-package world
-
-import (
-	"log"
-	"time"
-	"unsafe"
-
-	"edgaru089.ink/go/gl01/internal/asset"
-	"edgaru089.ink/go/gl01/internal/io"
-	"edgaru089.ink/go/gl01/internal/util"
-	"edgaru089.ink/go/gl01/internal/util/itype"
-	"github.com/go-gl/gl/all-core/gl"
-)
-
-// Vertex represents a rendering vertex in the global coordinate system.
-type Vertex struct {
-	World   itype.Vec3f // World vertex coordinate
-	Normal  itype.Vec3f // Surface normal vector (normalized)
-	Texture itype.Vec2f // World Texture Atlas vertex coordinate
-	Light   float32     // Light level of the block (0 ~ 15=blocklight, 16=sunlight)
-}
-
-func (c *Chunk) InitRender() {
-	gl.GenVertexArrays(1, &c.vao)
-	gl.BindVertexArray(c.vao)
-	gl.GenBuffers(1, &c.vbo)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.vbo)
-
-	gl.VertexAttribPointer(0, 3, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.World))))
-	gl.VertexAttribPointer(1, 3, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Normal))))
-	gl.VertexAttribPointer(2, 2, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Texture))))
-	gl.VertexAttribPointer(3, 1, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Light))))
-	gl.EnableVertexAttribArray(0)
-	gl.EnableVertexAttribArray(1)
-	gl.EnableVertexAttribArray(2)
-	gl.EnableVertexAttribArray(3)
-
-	gl.GenVertexArrays(1, &c.water.vao)
-	gl.BindVertexArray(c.water.vao)
-	gl.GenBuffers(1, &c.water.vbo)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.water.vbo)
-
-	gl.VertexAttribPointer(0, 3, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.World))))
-	gl.VertexAttribPointer(1, 3, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Normal))))
-	gl.VertexAttribPointer(2, 2, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Texture))))
-	gl.VertexAttribPointer(3, 1, gl.FLOAT, false, int32(unsafe.Sizeof(Vertex{})), gl.PtrOffset(int(unsafe.Offsetof(Vertex{}.Light))))
-	gl.EnableVertexAttribArray(0)
-	gl.EnableVertexAttribArray(1)
-	gl.EnableVertexAttribArray(2)
-	gl.EnableVertexAttribArray(3)
-
-	c.vertUpdate = make(chan [2][]Vertex, 2)
-
-	c.renderChanged = true
-}
-
-func (c *Chunk) FreeRender() {
-	gl.DeleteVertexArrays(1, &c.vao)
-	gl.DeleteBuffers(1, &c.vbo)
-	gl.DeleteVertexArrays(1, &c.water.vao)
-	gl.DeleteBuffers(1, &c.water.vbo)
-	close(c.vertUpdate)
-}
-
-// Bind calls glBindVertexArray(vao) and glBindBuffer(vbo).
-func (c *Chunk) Bind() {
-	gl.BindVertexArray(c.vao)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.vbo)
-}
-
-// BindWater binds the semi-transparant layer of the renderer.
-func (c *Chunk) BindWater() {
-	gl.BindVertexArray(c.water.vao)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.water.vbo)
-}
-
-// a global vertex array for VBO updates
-//var vertex []Vertex
-
-// updateRender should be called with gl.BindBuffer(c.vbo).
-func (c *Chunk) updateRender() {
-	if c.renderChanged {
-		go func() {
-			t := time.Now()
-			vert, vertWater := c.appendVertex([]Vertex{}, []Vertex{})
-			log.Printf("Chunk [%d,%d]: UpdateRender: vertex len of %d*%d = %d in %dms", c.X, c.Z, unsafe.Sizeof(Vertex{}), len(vert), int(unsafe.Sizeof(Vertex{}))*len(vert), time.Since(t).Milliseconds())
-			c.vertUpdate <- [2][]Vertex{vert, vertWater}
-		}()
-		c.renderChanged = false
-	}
-
-	select {
-	case vert := <-c.vertUpdate:
-		gl.BindBuffer(gl.ARRAY_BUFFER, c.vbo)
-		gl.BufferData(gl.ARRAY_BUFFER, int(unsafe.Sizeof(Vertex{}))*len(vert[0]), util.Ptr(vert[0]), gl.DYNAMIC_DRAW)
-		gl.BindBuffer(gl.ARRAY_BUFFER, c.water.vbo)
-		gl.BufferData(gl.ARRAY_BUFFER, int(unsafe.Sizeof(Vertex{}))*len(vert[1]), util.Ptr(vert[1]), gl.DYNAMIC_DRAW)
-		c.vbolen = len(vert[0])
-		c.water.vbolen = len(vert[1])
-	default: // do nothing
-	}
-}
-
-var checkViewOffset = []itype.Vec3d{
-	{0, 0, 0},
-	{ChunkSizeX, 0, 0},
-	{0, 0, ChunkSizeZ},
-	{ChunkSizeX, 0, ChunkSizeZ},
-	{0, ChunkSizeY, 0},
-	{ChunkSizeX, ChunkSizeY, 0},
-	{0, ChunkSizeY, ChunkSizeZ},
-	{ChunkSizeX, ChunkSizeY, ChunkSizeZ},
-}
-
-// checkView checks if the chunk is in the front-facing direction of the view.
-func (c *Chunk) checkView(from, facing itype.Vec3d) bool {
-	off := itype.Vec3d{
-		float64(c.X * ChunkSizeX),
-		0,
-		float64(c.Z * ChunkSizeZ),
-	}
-
-	for _, check := range checkViewOffset {
-		ok := off.Add(check).Add(from.Negative()).Dot(facing) > 0
-		if ok {
-			return true
-		}
-	}
-	return false
-}
-
-func (c *Chunk) Render() {
-	if !c.checkView(io.ViewPos, io.ViewDir) || !c.checkView(io.RenderPos, io.RenderDir) {
-		return
-	}
-
-	c.updateRender()
-	c.Bind()
-	gl.DrawArrays(gl.TRIANGLES, 0, int32(c.vbolen))
-}
-
-func (c *Chunk) RenderWater() {
-	if !c.checkView(io.ViewPos, io.ViewDir) || !c.checkView(io.RenderPos, io.RenderDir) {
-		return
-	}
-
-	c.updateRender()
-	c.BindWater()
-	gl.DrawArrays(gl.TRIANGLES, 0, int32(c.water.vbolen))
-}
-
-// appendVertex appends the chunk's global vertex into the array.
-func (c *Chunk) appendVertex(arr, arrwater []Vertex) (fin, finwater []Vertex) {
-	off := itype.Vec3i{
-		c.X * ChunkSizeX,
-		0,
-		c.Z * ChunkSizeZ,
-	}
-
-	for i := 0; i < ChunkSizeX; i++ {
-		for j := 0; j < ChunkSizeY; j++ {
-			for k := 0; k < ChunkSizeZ; k++ {
-				if c.Id[i][j][k] == 0 {
-					continue
-				}
-
-				app := GetBlockAppearance(off.Addv(i, j, k), int(c.Id[i][j][k]), int(c.Aux[i][j][k]), nil, c.world)
-				switch app.RenderType {
-				case OneTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-				case ThreeTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+"_top.png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+"_bot.png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-				case SixTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+"_x+.png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+"_x-.png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+"_y+.png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+"_y-.png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+"_z+.png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+"_z-.png", arr)
-				case CustomRendering:
-					arr, arrwater = app.CustomRenderAppend(off.Addv(i, j, k), int(c.Aux[i][j][k]), nil, c.world, arr, arrwater)
-				}
-
-			}
-		}
-	}
-
-	return arr, arrwater
-}
-
-func (c *Chunk) appendFace(face itype.Direction, pos itype.Vec3i, texname string, arr []Vertex) []Vertex {
-
-	off := pos.Addv(c.X*ChunkSizeX, 0, c.Z*ChunkSizeZ).ToFloat32()
-
-	// check if we can skip this face
-	next := pos.Add(itype.DirectionVeci[face])
-
-	if next[0] >= 0 && next[1] >= 0 && next[2] >= 0 && next[0] < ChunkSizeX && next[1] < ChunkSizeY && next[2] < ChunkSizeZ &&
-		c.Id[next[0]][next[1]][next[2]] != 0 &&
-		!GetBlockAppearance(
-			next.Addv(c.X*ChunkSizeX, 0, c.Z*ChunkSizeZ),
-			int(c.Id[next[0]][next[1]][next[2]]),
-			int(c.Aux[next[0]][next[1]][next[2]]),
-			nil, c.world,
-		).Transparent { // face next to a solid block
-		return arr // skip!
-	}
-
-	worldnext := pos.Add(itype.DirectionVeci[face]).Addv(c.X*ChunkSizeX, 0, c.Z*ChunkSizeZ)
-	if block := c.world.Block(worldnext); block.Id != 0 && !block.Appearance(worldnext).Transparent {
-		return arr // skip!
-	}
-
-	switch face {
-	case itype.XPlus: // X+
-		arr = append(arr,
-			//     Vertex Position  Normal Vector(normalized)  Texture Coord  Light
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 1}, 16},
-		)
-	case itype.XMinus: // X-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(0, 1, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(0, 0, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YPlus: // Y+
-		arr = append(arr,
-			Vertex{off.Addv(0, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 16},
-		)
-	case itype.YMinus: // Y-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(0, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZPlus: // Z+
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 1}, 16},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, 0, 1}, itype.Vec2f{1, 1}, 16},
-		)
-	case itype.ZMinus: // Z-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(0, 1, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 0}, 16},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{1, 1}, 16},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 0}, 16},
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{0, 0, -1}, itype.Vec2f{0, 1}, 16},
-		)
-	}
-
-	texrect := asset.WorldTextureAtlas.RectNormalized(texname)
-	for i := len(arr) - 6; i < len(arr); i++ {
-		arr[i].Texture[0] = texrect.Left + arr[i].Texture[0]*texrect.Width
-		arr[i].Texture[1] = texrect.Top + arr[i].Texture[1]*texrect.Height
-	}
-
-	return arr
-}
--- a/internal/world/render.go.old
+++ b/internal/world/render.go.old
@@ -1,204 +0,0 @@
-package world
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"unsafe"
-
-	"github.com/Edgaru089/gl01/internal/asset"
-	"github.com/Edgaru089/gl01/internal/util/itype"
-	"github.com/go-gl/gl/all-core/gl"
-)
-
-// Vertex represents a rendering vertex in the global coordinate system.
-type Vertex struct {
-	World   itype.Vec3f // World vertex coordinate
-	Normal  itype.Vec3f // Surface normal vector (normalized)
-	Texture itype.Vec2f // World Texture Atlas vertex coordinate
-	Light   float32     // Light level of the block (0 ~ 15=blocklight, 16=sunlight)
-}
-
-func (c *Chunk) InitRender() {
-	gl.GenVertexArrays(1, &c.vao)
-	gl.GenBuffers(1, &c.vbo)
-
-	c.renderChanged = true
-}
-
-func (c *Chunk) FreeRender() {
-	gl.DeleteVertexArrays(1, &c.vao)
-	gl.DeleteBuffers(1, &c.vbo)
-}
-
-// Bind calls glBindVertexArray(vao) and glBindBuffer(vbo).
-func (c *Chunk) Bind() {
-	gl.BindVertexArray(c.vao)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.vbo)
-}
-
-// EnableVertexArrayAttrib calls glEnableVertexArrayAttrib(vao, attribId).
-func (c *Chunk) EnableVertexArrayAttrib(attribId uint32) {
-	c.Bind()
-	gl.EnableVertexAttribArray(attribId)
-}
-
-// a global vertex array for VBO updates
-//var vertex []Vertex
-
-// updateRender should be called with gl.BindBuffer(c.vbo).
-func (c *Chunk) updateRender() {
-	if c.renderChanged {
-		c.vertex = c.AppendVertex(c.vertex[0:0])
-		log.Printf("Chunk [%d,%d]: UpdateRender: vertex len of %d*%d = %d", c.X, c.Z, unsafe.Sizeof(Vertex{}), len(c.vertex), int(unsafe.Sizeof(Vertex{}))*len(c.vertex))
-
-		f, _ := os.Create("vertex.txt")
-		fmt.Fprint(f, c.vertex)
-		f.Close()
-
-		gl.BufferData(gl.ARRAY_BUFFER, int(unsafe.Sizeof(Vertex{}))*len(c.vertex), gl.Ptr(c.vertex), gl.DYNAMIC_DRAW)
-		c.vbolen = len(c.vertex)
-
-		c.renderChanged = false
-	}
-}
-
-func (c *Chunk) Render() {
-	gl.BindVertexArray(c.vao)
-	gl.BindBuffer(gl.ARRAY_BUFFER, c.vbo)
-	c.updateRender()
-	gl.DrawArrays(gl.TRIANGLES, 0, int32(c.vbolen))
-}
-
-// ChunkRenderAppend appends the chunk's global vertex into the array.
-func (c *Chunk) AppendVertex(arr []Vertex) []Vertex {
-	off := itype.Vec3i{
-		c.X * ChunkSizeX,
-		0,
-		c.Z * ChunkSizeZ,
-	}
-
-	for i := 0; i < ChunkSizeX; i++ {
-		for j := 0; j < ChunkSizeY; j++ {
-			for k := 0; k < ChunkSizeZ; k++ {
-				if c.Id[i][j][k] == 0 {
-					continue
-				}
-
-				app := GetBlockAppearance(off.Addv(i, j, k), int(c.Id[i][j][k]), int(c.Aux[i][j][k]), nil)
-				switch app.RenderType {
-				case OneTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+".png", arr)
-				case ThreeTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+"_top.png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+"_bot.png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+"_side.png", arr)
-				case SixTexture:
-					arr = c.appendFace(itype.XPlus, itype.Vec3i{i, j, k}, app.Name+"_x+.png", arr)
-					arr = c.appendFace(itype.XMinus, itype.Vec3i{i, j, k}, app.Name+"_x-.png", arr)
-					arr = c.appendFace(itype.YPlus, itype.Vec3i{i, j, k}, app.Name+"_y+.png", arr)
-					arr = c.appendFace(itype.YMinus, itype.Vec3i{i, j, k}, app.Name+"_y-.png", arr)
-					arr = c.appendFace(itype.ZPlus, itype.Vec3i{i, j, k}, app.Name+"_z+.png", arr)
-					arr = c.appendFace(itype.ZMinus, itype.Vec3i{i, j, k}, app.Name+"_z-.png", arr)
-				case CustomRendering:
-					arr = app.CustomRenderAppend(off.Addv(i, j, k), int(c.Aux[i][j][k]), nil, arr)
-				}
-
-			}
-		}
-	}
-
-	return arr
-}
-
-func (c *Chunk) appendFace(face itype.Direction, pos itype.Vec3i, texname string, arr []Vertex) []Vertex {
-
-	off := pos.Addv(c.X*ChunkSizeX, 0, c.Z*ChunkSizeZ).ToFloat32()
-
-	// check if we can skip this face
-	next := pos.Add(itype.DirectionVeci[face])
-	if next[0] >= 0 && next[1] >= 0 && next[2] >= 0 && next[0] < ChunkSizeX && next[1] < ChunkSizeY && next[2] < ChunkSizeZ &&
-		c.Id[next[0]][next[1]][next[2]] != 0 &&
-		!GetBlockAppearance(
-			next.Addv(c.X*ChunkSizeX, 0, c.Z*ChunkSizeZ),
-			int(c.Id[next[0]][next[1]][next[2]]),
-			int(c.Aux[next[0]][next[1]][next[2]]),
-			nil,
-		).Transparent { // face next to a solid block
-		return arr // skip!
-	}
-
-	switch face {
-	case itype.XPlus: // X+
-		arr = append(arr,
-			//     Vertex Position  Normal Vector(normalized)  Texture Coord  Light
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 0.7},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 0}, 0.7},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 0.7},
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{1, 0, 0}, itype.Vec2f{1, 1}, 0.7},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 0}, 0.7},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{1, 0, 0}, itype.Vec2f{0, 1}, 0.7},
-		)
-	case itype.XMinus: // X-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 0.95},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 0.95},
-			Vertex{off.Addv(0, 1, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 0}, 0.95},
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{-1, 0, 0}, itype.Vec2f{0, 1}, 0.95},
-			Vertex{off.Addv(0, 0, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 1}, 0.95},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{-1, 0, 0}, itype.Vec2f{1, 0}, 0.95},
-		)
-	case itype.YPlus: // Y+
-		arr = append(arr,
-			Vertex{off.Addv(0, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 0}, 1},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 1},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 1},
-			Vertex{off.Addv(0, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{0, 1}, 1},
-			Vertex{off.Addv(1, 1, 1), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 1}, 1},
-			Vertex{off.Addv(1, 1, 0), itype.Vec3f{0, 1, 0}, itype.Vec2f{1, 0}, 1},
-		)
-	case itype.YMinus: // Y-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 0.6},
-			Vertex{off.Addv(1, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 0}, 0.6},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 0.6},
-			Vertex{off.Addv(0, 0, 0), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 0}, 0.6},
-			Vertex{off.Addv(1, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{0, 1}, 0.6},
-			Vertex{off.Addv(0, 0, 1), itype.Vec3f{0, -1, 0}, itype.Vec2f{1, 1}, 0.6},
-		)
-	case itype.ZPlus: // Z+
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 1), itype.Vec2f{0, 1}, 0.85},
-			Vertex{off.Addv(1, 0, 1), itype.Vec2f{1, 1}, 0.85},
-			Vertex{off.Addv(0, 1, 1), itype.Vec2f{0, 0}, 0.85},
-			Vertex{off.Addv(1, 1, 1), itype.Vec2f{1, 0}, 0.85},
-			Vertex{off.Addv(0, 1, 1), itype.Vec2f{0, 0}, 0.85},
-			Vertex{off.Addv(1, 0, 1), itype.Vec2f{1, 1}, 0.85},
-		)
-	case itype.ZMinus: // Z-
-		arr = append(arr,
-			Vertex{off.Addv(0, 0, 0), itype.Vec2f{1, 1}, 0.85},
-			Vertex{off.Addv(0, 1, 0), itype.Vec2f{1, 0}, 0.85},
-			Vertex{off.Addv(1, 1, 0), itype.Vec2f{0, 0}, 0.85},
-			Vertex{off.Addv(0, 0, 0), itype.Vec2f{1, 1}, 0.85},
-			Vertex{off.Addv(1, 1, 0), itype.Vec2f{0, 0}, 0.85},
-			Vertex{off.Addv(1, 0, 0), itype.Vec2f{0, 1}, 0.85},
-		)
-	}
-
-	texrect := asset.WorldTextureAtlas.RectNormalized(texname)
-	for i := len(arr) - 6; i < len(arr); i++ {
-		arr[i].Texture[0] = texrect.Left + arr[i].Texture[0]*texrect.Width
-		arr[i].Texture[1] = texrect.Top + arr[i].Texture[1]*texrect.Height
-	}
-
-	return arr
-}
--- a/internal/world/viewray.go
+++ b/internal/world/viewray.go
@@ -1,55 +0,0 @@
-package world
-
-import (
-	"edgaru089.ink/go/gl01/internal/util/itype"
-)
-
-func (w *World) castworker(from, dir itype.Vec3d, maxlen float64, current itype.Vec3i, skipdir itype.Direction) (ok bool, blockcoord itype.Vec3i, face itype.Direction, where itype.Vec3d, dist float64) {
-
-	// Length test
-	if current.ToFloat64().Addv(0.5, 0.5, 0.5).Add(from.Negative()).Length() > maxlen+1 {
-		return
-	}
-
-	// Loose intersect test
-	if ok, _, _, _ = (itype.Boxd{
-		OffX:  float64(current[0]),
-		OffY:  float64(current[1]),
-		OffZ:  float64(current[2]),
-		SizeX: 1, SizeY: 1, SizeZ: 1,
-	}).IntersectRay(from, dir, maxlen); !ok {
-		return
-	}
-
-	// Go through the bounding boxes
-	ba := w.Block(current).Appearance(current)
-	if !ba.NotSolid {
-		for _, b := range ba.Lookbox {
-			if ok, face, where, dist = b.Offset(current.ToFloat64()).IntersectRay(from, dir, maxlen); ok {
-				blockcoord = current
-				return
-			}
-		}
-	}
-
-	// Test the directions
-	for i := itype.Direction(0); i < 6; i++ {
-		if i == skipdir {
-			continue
-		}
-
-		ok, blockcoord, face, where, dist = w.castworker(from, dir, maxlen, current.Add(itype.DirectionVeci[i]), i.Opposite())
-		if ok {
-			return
-		}
-	}
-
-	ok = false
-	return
-}
-
-// CastViewRay
-func (w *World) CastViewRay(from, dir itype.Vec3d, maxlen float64) (ok bool, blockcoord itype.Vec3i, face itype.Direction, where itype.Vec3d, dist float64) {
-
-	return w.castworker(from, dir, maxlen, from.Floor(), -1)
-}
--- a/internal/world/world.go
+++ b/internal/world/world.go
@@ -1,167 +0,0 @@
-package world
-
-import (
-	"fmt"
-	"io"
-
-	"edgaru089.ink/go/gl01/internal/util/itype"
-)
-
-// World holds a number of Chunks and Entities.
-type World struct {
-	Chunks map[itype.Vec2i]*Chunk
-	Seed   int32
-}
-
-// NewWorld creates a new, empty, world with no chunks.
-func NewWorld() *World {
-	var w World
-	w.Chunks = make(map[itype.Vec2i]*Chunk)
-
-	return &w
-}
-
-// The default World.
-var DefaultWorld World
-
-func init() {
-	DefaultWorld.Chunks = make(map[itype.Vec2i]*Chunk)
-}
-
-// Chunk returns the chunk at [x, z], or nil if nonexistent.
-func (w *World) Chunk(x, z int) *Chunk {
-	return w.Chunks[itype.Vec2i{x, z}]
-}
-
-// SetChunk sets the chunk [x, z] to c.
-func (w *World) SetChunk(x, z int, c *Chunk) {
-	if old, ok := w.Chunks[itype.Vec2i{x, z}]; ok {
-		old.FreeRender()
-	}
-
-	c.X = x
-	c.Z = z
-	c.renderChanged = true
-	c.world = w
-	w.Chunks[itype.Vec2i{x, z}] = c
-	c.InitRender()
-}
-
-func BlockPosToChunk(blockpos itype.Vec3i) (x, z int) {
-	if blockpos[0] >= 0 {
-		x = blockpos[0] / ChunkSizeX
-	} else {
-		x = (blockpos[0]+1)/ChunkSizeX - 1
-	}
-
-	if blockpos[2] >= 0 {
-		z = blockpos[2] / ChunkSizeZ
-	} else {
-		z = (blockpos[2]+1)/ChunkSizeZ - 1
-	}
-
-	return
-}
-
-func BlockPosToInChunk(blockpos itype.Vec3i) (x, y, z int) {
-	if blockpos[0] >= 0 {
-		x = blockpos[0] % ChunkSizeX
-	} else {
-		x = ChunkSizeX + (blockpos[0] % ChunkSizeX)
-		if x == ChunkSizeX {
-			x = 0
-		}
-	}
-	y = blockpos[1]
-	if blockpos[2] >= 0 {
-		z = blockpos[2] % ChunkSizeZ
-	} else {
-		z = ChunkSizeZ + (blockpos[2] % ChunkSizeZ)
-		if z == ChunkSizeZ {
-			z = 0
-		}
-	}
-	return
-}
-
-// Break breaks the block.
-func (w *World) Break(pos itype.Vec3i) {
-	cx, cz := BlockPosToChunk(pos)
-	cix, ciy, ciz := BlockPosToInChunk(pos)
-	c, ok := w.Chunks[itype.Vec2i{cx, cz}]
-	if !ok || ciy < 0 || ciy >= ChunkSizeY {
-		return
-	}
-
-	c.SetBlock(cix, ciy, ciz, 0, 0)
-}
-
-// Block returns the block at the position [pos], or an empty Block{} if it does not exist.
-func (w *World) Block(pos itype.Vec3i) Block {
-	cx, cz := BlockPosToChunk(pos)
-	cix, ciy, ciz := BlockPosToInChunk(pos)
-	c, ok := w.Chunks[itype.Vec2i{cx, cz}]
-	if !ok || ciy < 0 || ciy >= ChunkSizeY {
-		return Block{}
-	}
-	return Block{
-		Id:        int(c.Id[cix][ciy][ciz]),
-		Aux:       int(c.Aux[cix][ciy][ciz]),
-		Dataset:   nil,
-		Behaviour: GetBlockBehaviour(int(c.Id[cix][ciy][ciz])),
-	}
-}
-
-// SetBlock sets the block at the given position, returning its Block.
-//
-// It fails if the chunk is not loaded, and an empty Block{} is returned.
-func (w *World) SetBlock(pos itype.Vec3i, id, aux int, dataset itype.Dataset) Block {
-	cx, cz := BlockPosToChunk(pos)
-	cix, ciy, ciz := BlockPosToInChunk(pos)
-	c, ok := w.Chunks[itype.Vec2i{cx, cz}]
-	if !ok || ciy < 0 || ciy >= ChunkSizeY {
-		return Block{}
-	}
-
-	c.SetBlock(cix, ciy, ciz, id, aux)
-	return Block{
-		Id:        int(c.Id[cix][ciy][ciz]),
-		Aux:       int(c.Aux[cix][ciy][ciz]),
-		Dataset:   nil,
-		Behaviour: GetBlockBehaviour(int(c.Id[cix][ciy][ciz])),
-	}
-}
-
-// LoadChunkFromGob loads (or overwrites) chunk [id.x, id.z] from the Gob-encoding file.
-func (w *World) LoadChunkFromGob(id itype.Vec2i, file io.Reader) (err error) {
-	c := &Chunk{}
-	if err != nil {
-		return fmt.Errorf("World: load chunk (%d,%d) from gob file: %s", id[0], id[1], err)
-	}
-
-	if old, ok := w.Chunks[id]; ok {
-		old.FreeRender()
-	}
-
-	c.LoadFromGobIndexed(file, id[0], id[1])
-	w.Chunks[id] = c
-	c.InitRender()
-
-	return nil
-}
-
-// Render should be called from WorldRenderer, setting shader and texture context
-// for the Render function, which merely calls BindVertexArray and DrawArrays.
-func (w *World) Render() {
-	for _, c := range w.Chunks {
-		c.Render()
-	}
-}
-
-// RenderWater calls DrawArrays drawing the semi-transparant layer of the world.
-func (w *World) RenderWater() {
-	for _, c := range w.Chunks {
-		c.RenderWater()
-	}
-
-}
--- a/internal/world/worldgen/worldgen.go
+++ b/internal/world/worldgen/worldgen.go
@@ -1,105 +0,0 @@
-package worldgen
-
-import (
-	"sync"
-
-	packworld "edgaru089.ink/go/gl01/internal/world"
-	"edgaru089.ink/go/gl01/internal/world/blocks"
-	"github.com/aquilax/go-perlin"
-)
-
-const (
-	Alpha = 5 // Weight forming the noise sum
-	Beta  = 2 // harmonic scaling/spacing
-	N     = 3 // iterations
-
-	AltitudeDensity = 20 // Density of the noise in altitude
-
-	Sealevel = 63 // Space with Y=63 and lower should be the sea
-	Highest  = 74 // Highest part of the terrain
-	Lowest   = 54 // Lowest part of the terrain
-)
-
-var perlins map[int64]*perlin.Perlin
-var perlinsLock sync.RWMutex
-
-func init() {
-	perlins = make(map[int64]*perlin.Perlin)
-}
-
-func fractal(p *perlin.Perlin, x, y float64, levels int) float64 {
-	ans := 0.0
-	amp := 1.0
-	for i := 0; i < levels; i++ {
-		ans += amp * p.Noise2D(x, y)
-		amp /= 3
-		x *= 2
-		y *= 2
-	}
-	return ans
-}
-
-// Chunk generates the chunk (must with chunkID set!!) with seed.
-func Chunk(chunk *packworld.Chunk, world *packworld.World, seed int64) {
-
-	perlinsLock.RLock()
-	p, ok := perlins[seed]
-	if !ok {
-		perlinsLock.RUnlock()
-		perlinsLock.Lock()
-		p = perlin.NewPerlin(Alpha, Beta, N, seed)
-		perlins[seed] = p
-		perlinsLock.Unlock()
-	} else {
-		perlinsLock.RUnlock()
-	}
-
-	//log.Printf("noise=%.5f", p.Noise2D(0.1, 0.1))
-
-	offX := packworld.ChunkSizeX * chunk.X
-	offZ := packworld.ChunkSizeZ * chunk.Z
-
-	for x := 0; x < packworld.ChunkSizeX; x++ {
-		for z := 0; z < packworld.ChunkSizeZ; z++ {
-
-			height := Lowest + int(float64(Highest-Lowest)*(fractal(
-				p,
-				float64(offX+x)/AltitudeDensity,
-				float64(offZ+z)/AltitudeDensity, 6)/2+0.5))
-			//log.Printf("height = %d (noise=%.5f)", height, p.Noise2D(float64(offX+x)/AltitudeDensity, float64(offZ+z)/AltitudeDensity)/2+0.5)
-
-			// water
-			for y := Sealevel; y > height; y-- {
-				chunk.Id[x][y][z] = blocks.Water
-			}
-
-			// covering dirt
-			if height >= Sealevel {
-				chunk.Id[x][height][z] = blocks.Grass
-			} else {
-				chunk.Id[x][height][z] = blocks.Dirt
-			}
-			//chunk.Id[x][height][z] = blocks.DebugDir
-			chunk.Id[x][height-1][z] = blocks.Dirt
-			chunk.Id[x][height-2][z] = blocks.Dirt
-			chunk.Id[x][height-3][z] = blocks.Dirt
-			height -= 4
-
-			// stone in the middle
-			for y := height; y >= 1; y-- {
-				chunk.Id[x][y][z] = blocks.Stone
-			}
-
-			// bedrock at the bottom
-			chunk.Id[x][0][z] = blocks.Bedrock
-
-			// plant trees
-			if height >= 50 && height <= 70 {
-				if p.Noise2D(float64(offX+x), float64(offZ+z)) > 0.9 {
-				}
-			}
-		}
-	}
-
-	chunk.InvalidateRender()
-}
--- a/main.cfg.json
+++ b/main.cfg.json
@@ -1,7 +1,7 @@
 {
-	"WindowWidth":  800,
-	"WindowHeight": 600,
+	"WindowWidth":  1024,
+	"WindowHeight": 768,

-	"FramerateLimit": 0
+	"FramerateLimit": 4000
 }

--- a/main.go
+++ b/main.go
@@ -8,6 +8,7 @@ import (
 	"edgaru089.ink/go/gl01/internal/game"
 	gio "edgaru089.ink/go/gl01/internal/io"
 	_ "edgaru089.ink/go/gl01/internal/render/gpu_preference"
+	"edgaru089.ink/go/gl01/internal/util"
 	"edgaru089.ink/go/gl01/internal/util/itype"
 	"github.com/go-gl/gl/all-core/gl"
 	"github.com/go-gl/glfw/v3.3/glfw"
@@ -17,7 +18,6 @@ var (
 	frameTick *time.Ticker
 )

-
 func init() {
 	runtime.LockOSThread()
 }
@@ -44,7 +44,7 @@ func main() {
 	glfw.WindowHint(glfw.ContextVersionMinor, 3)
 	glfw.WindowHint(glfw.OpenGLProfile, glfw.OpenGLCoreProfile)
 	glfw.WindowHint(glfw.OpenGLForwardCompatible, 1)
-	win, err := glfw.CreateWindow(gio.MainConfig.WindowWidth, gio.MainConfig.WindowHeight, "Gl01", nil, nil)
+	win, err := glfw.CreateWindow(gio.MainConfig.WindowWidth, gio.MainConfig.WindowHeight, itype.ProjectName, nil, nil)
 	if err != nil {
 		panic(err)
 	}
@@ -66,23 +66,22 @@ func main() {
 	game := game.NewGame()
 	game.Init(win)

-	gio.ClearColor = itype.Vec4f{0.6, 0.8, 1.0, 1.0}
-	gio.FogColor = itype.Vec4f{0.6, 0.8, 1.0, 1.0}
-	gl.ClearColor(0.6, 0.8, 1.0, 1)
+	gio.ClearColor = itype.Vec4f{0, 0, 0, 1.0}
+	gio.FogColor = itype.Vec4f{0, 0, 0, 1.0}
+	gl.ClearColor(gio.ClearColor[0], gio.ClearColor[1], gio.ClearColor[2], gio.ClearColor[3])
 	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
 	win.SwapBuffers()
-	winClock := time.Now()
+	winClock := util.NewClock()

 	fpsClock := time.Now()
 	fpsCounter := 0

 	for !win.ShouldClose() {

-		deltaTime := time.Since(winClock)
-		winClock = time.Now()
+		deltaTime := winClock.Restart()
 		game.Update(win, deltaTime)

-		gl.ClearColor(0.6, 0.8, 1.0, 1)
+		gl.ClearColor(gio.ClearColor[0], gio.ClearColor[1], gio.ClearColor[2], gio.ClearColor[3])
 		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

 		game.Render(win)
@@ -91,7 +90,7 @@ func main() {
 		glfw.PollEvents()

 		if time.Since(fpsClock) >= time.Second {
-			win.SetTitle(fmt.Sprintf("Gl01 %dFPS", fpsCounter))
+			win.SetTitle(fmt.Sprintf(itype.ProjectName+" %dFPS", fpsCounter))
 			fpsCounter = 0
 			fpsClock = time.Now()
 		} else {
Author	SHA1	Message	Date
Edgaru089	105515277f	working genetics prototype	2025-12-19 21:41:58 +08:00
Edgaru089	afc9904651	we're ready for tenants	2025-12-19 13:48:48 +08:00
Edgaru089	b20abbe803	remove log window & hide demo by default	2025-12-19 13:30:27 +08:00
Edgaru089	56f2f02afe	cleanup	2025-12-19 13:08:51 +08:00
Edgaru089	fb0276bc4e	tweak main	2025-12-19 12:31:15 +08:00