130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
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#include "player.h"
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#include "entity.h"
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#include "app.h"
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#include "input.h"
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#include "particle.h"
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#include "render_util.h"
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#include "types.h"
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#include "util/assert.h"
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#include <stdlib.h>
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static inline double dabs(double x) {
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return x < 0.0 ? -x : x;
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}
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System_Player *player_NewSystem(App *super) {
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System_Player *sys = malloc(sizeof(System_Player));
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sys->super = super;
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sys->player = NULL;
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return sys;
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}
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void player_DeleteSystem(System_Player *sys) {
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free(sys);
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}
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static void _player_OnHit(Entity *me, Entity *other, Vec2 triedDelta, void *data) {
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ASSERT(me->player && "_player_OnHit called with ME as non-player");
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// Moving down
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if (triedDelta.y > 0)
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me->player->onGround = true;
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}
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void player_AddEntity(System_Player *sys, Entity *e) {
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if (e->player) {
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ASSERT(!sys->player && "Two player entities are added! Did you forget to DeleteEntity for player?");
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sys->player = e->player;
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ASSERT(e->hitbox && "Player does not have Hitbox component");
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e->hitbox->onHit = &_player_OnHit;
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}
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}
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void player_DeleteEntity(System_Player *sys, uintptr_t id) {
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if (sys->player && sys->player->super->id == id)
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sys->player = NULL;
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}
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static double walkSpeed = 300.0, jumpSpeed = 800.0, dashSpeed = 1500.0;
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static int airjumpCount = 1, airdashCount = 1;
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static Duration dashLength = {.microseconds = 150000}, dashCooldown = {.microseconds = 400000};
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static Duration emitCooldown = {.microseconds = 200000};
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static TimePoint lastEmit;
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void player_Advance(System_Player *sys, Duration deltaTime) {
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if (!sys->player)
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return;
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// The bulk of player logic right here
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System_Input *input = sys->super->input;
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Component_Player *p = sys->player;
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if (p->faceDirection != 1 && p->faceDirection != -1)
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p->faceDirection = 1; // Face right by default
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double targetVecX = 0.0;
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// Move left/right
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if (input_IsPressed(input->keys[input_Key_Left])) {
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p->faceDirection = -1;
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targetVecX += -walkSpeed;
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}
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if (input_IsPressed(input->keys[input_Key_Right])) {
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p->faceDirection = 1;
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targetVecX += walkSpeed;
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}
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p->super->position->velocity.x = targetVecX;
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// Jump
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if (p->onGround)
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p->jumpCount = 0;
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if (input->keys[input_Key_Jump] == JustPressed ||
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(input->keys[input_Key_Jump] == Pressed && dabs(p->super->position->velocity.y) < 5)) {
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if (p->onGround || p->jumpCount < airjumpCount) {
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p->storedSpeedY = -jumpSpeed;
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if (!p->onGround) // Took the second clause, airjumped
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p->jumpCount++;
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}
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}
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// Dash
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if (p->onGround)
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p->dashCount = 0;
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if (input_IsPressed(input->keys[input_Key_Dash]) &&
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(p->onGround || p->dashCount < airdashCount) &&
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time_Since(p->lastDash).microseconds > dashCooldown.microseconds) {
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p->lastDash = time_Now();
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if (!p->onGround)
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p->dashCount++;
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}
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// Am I dashing right now?
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if (time_Since(p->lastDash).microseconds < dashLength.microseconds) {
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p->super->position->velocity.x += p->faceDirection * dashSpeed;
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p->super->position->velocity.y = 0;
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} else { // Release the stored Y speed
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p->super->position->velocity.y += p->storedSpeedY;
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p->storedSpeedY = 0;
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}
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// Check OnGround again
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if (dabs(sys->player->super->position->velocity.y) > EPS)
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sys->player->onGround = false;
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// Particles
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if (time_Since(lastEmit).microseconds > emitCooldown.microseconds) {
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lastEmit = time_Now();
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particle_Emit(
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sys->super->particle,
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vec2_Add(p->super->position->position, vec2(0, -p->super->hitbox->box.size.y)),
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vec2(0, -100), 2, 6, 6,
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duration_FromSeconds(0), &render_ModeDefault);
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}
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}
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