Dashing

input.c

@@ -16,6 +16,7 @@ const char *input_KeyNames[input_Key_Count] = {
 	"Attack",
 	"Spell",
 	"Use",
+	"Dash",
 	"Escape"};
 
 void input_SetDefaultKeymap(System_Input *sys) {
@@ -27,6 +28,7 @@ void input_SetDefaultKeymap(System_Input *sys) {
 	sys->systemKeymap[input_Key_Attack] = 'J';
 	sys->systemKeymap[input_Key_Spell]  = 'K';
 	sys->systemKeymap[input_Key_Use]    = 'L';
+	sys->systemKeymap[input_Key_Dash]   = VK_OEM_1; // The ;: key on the US keyboard
 	sys->systemKeymap[input_Key_Escape] = VK_ESCAPE;
 }
 

input.h

@@ -19,6 +19,7 @@ typedef enum {
 	input_Key_Attack,
 	input_Key_Spell,
 	input_Key_Use,
+	input_Key_Dash,
 	input_Key_Escape,
 	input_Key_Count
 } input_Key;

main.cpp

@@ -44,7 +44,7 @@ int main() {
 		EndBatchDraw();
 
 
-		Duration toSleep = {.microseconds = 1000000 / 60 - time_Reset(&lastFrame).microseconds};
+		Duration toSleep = {.microseconds = 1000000 / 300 - time_Reset(&lastFrame).microseconds};
 		duration_Sleep(toSleep);
 	}
 

physics.c

@@ -86,7 +86,7 @@ static inline void _physics_AdvanceEntity(System_Physics *sys, Entity *e, Durati
 }
 
 
-static double gravity = 1000;
+static double gravity = 2000;
 
 void physics_Advance(System_Physics *sys, Duration deltaTime) {
 	for (tree_Node *i = tree_FirstNode(sys->pos);

player.c

@@ -4,6 +4,7 @@
 #include "app.h"
 #include "input.h"
 
+#include "types.h"
 #include "util/assert.h"
 #include <stdlib.h>
 
@@ -46,8 +47,9 @@ void player_DeleteEntity(System_Player *sys, uintptr_t id) {
 }
 
 
-static double walkSpeed = 300.0, jumpSpeed = 500.0;
-static int    airjumpCount = 1;
+static double   walkSpeed = 300.0, jumpSpeed = 800.0, dashSpeed = 1500.0;
+static int      airjumpCount = 1, airdashCount = 1;
+static Duration dashLength = {.microseconds = 150000}, dashCooldown = {.microseconds = 400000};
 
 void player_Advance(System_Player *sys, Duration deltaTime) {
 	if (!sys->player)
@@ -55,27 +57,55 @@ void player_Advance(System_Player *sys, Duration deltaTime) {
 	// The bulk of player logic right here
 	System_Input *input = sys->super->input;
 
+	if (sys->player->faceDirection != 1 && sys->player->faceDirection != -1)
+		sys->player->faceDirection = 1; // Face right by default
+
+
 	double targetVecX = 0.0;
 	// Move left/right
-	if (input_IsPressed(input->keys[input_Key_Left]))
+	if (input_IsPressed(input->keys[input_Key_Left])) {
+		sys->player->faceDirection = -1;
 		targetVecX += -walkSpeed;
-	if (input_IsPressed(input->keys[input_Key_Right]))
+	}
+	if (input_IsPressed(input->keys[input_Key_Right])) {
+		sys->player->faceDirection = 1;
 		targetVecX += walkSpeed;
+	}
 	sys->player->super->position->velocity.x = targetVecX;
 
 
+	// Jump
 	if (sys->player->onGround)
 		sys->player->jumpCount = 0;
-
-	// Jump
-	if (sys->super->input->keys[input_Key_Jump] == JustPressed) {
+	if (sys->super->input->keys[input_Key_Jump] == JustPressed ||
+		(sys->super->input->keys[input_Key_Jump] == Pressed && dabs(sys->player->super->position->velocity.y) < 5)) {
 		if (sys->player->onGround || sys->player->jumpCount < airjumpCount) {
-			sys->player->super->position->velocity.y = -jumpSpeed;
+			sys->player->storedSpeedY = -jumpSpeed;
 			if (!sys->player->onGround) // Took the second clause, airjumped
 				sys->player->jumpCount++;
 		}
 	}
 
+	// Dash
+	if (sys->player->onGround)
+		sys->player->dashCount = 0;
+	if (input_IsPressed(input->keys[input_Key_Dash]) &&
+		(sys->player->onGround || sys->player->dashCount < airdashCount) &&
+		time_Since(sys->player->lastDash).microseconds > dashCooldown.microseconds) {
+		sys->player->lastDash = time_Now();
+		if (!sys->player->onGround)
+			sys->player->dashCount++;
+	}
+	// Am I dashing right now?
+	if (time_Since(sys->player->lastDash).microseconds < dashLength.microseconds) {
+		sys->player->super->position->velocity.x += sys->player->faceDirection * dashSpeed;
+		sys->player->super->position->velocity.y = 0;
+	} else { // Release the stored Y speed
+		sys->player->super->position->velocity.y += sys->player->storedSpeedY;
+		sys->player->storedSpeedY = 0;
+	}
+
+
 	// Check OnGround again
 	if (dabs(sys->player->super->position->velocity.y) > EPS)
 		sys->player->onGround = false;

player.h

@@ -16,8 +16,13 @@ typedef struct _Entity Entity;
 typedef struct {
 	Entity *super;
 
+	int       faceDirection; // +1 for right, -1 for left
+	TimePoint lastDash;
+	int       dashCount; // Number of dashes the player did since in air
 	int       jumpCount; // Number of times the player has jumped since leaving ground
 						 // (Initial jump does not count)
+
+	double storedSpeedY;        // Speed stored in the middle of a dash
 	bool   onGround;            // If the player is on the ground?
 	bool   moveLeft, moveRight; // If the player is moving left/right?
 } Component_Player;