105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
#include "particle_sys.h"
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#include <stdio.h>
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#include <unistd.h>
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#include "raylib.h"
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#include "raymath.h"
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#include "constants.h"
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static const Vector2 GRAVITY = {0, GRAV_ACCEL};
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void simple_particle_system_update(Particle_t* part, void* user_data)
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{
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float delta_time = DELTA_T; // TODO: Will need to think about delta time handling
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part->rotation += part->angular_vel;
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part->velocity =
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Vector2Add(
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part->velocity,
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Vector2Scale(GRAVITY, delta_time)
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);
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float mag = Vector2Length(part->velocity);
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part->velocity = Vector2Scale(
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Vector2Normalize(part->velocity),
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(mag > PLAYER_MAX_SPEED)? PLAYER_MAX_SPEED:mag
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);
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// 3 dp precision
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if (fabs(part->velocity.x) < 1e-3) part->velocity.x = 0;
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if (fabs(part->velocity.y) < 1e-3) part->velocity.y = 0;
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part->position = Vector2Add(
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part->position,
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Vector2Scale(part->velocity, delta_time)
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);
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// Level boundary collision
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{
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if(
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part->position.x + part->size < 0 || part->position.x - part->size > 1280
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|| part->position.y + part->size < 0 || part->position.y - part->size > 640
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)
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{
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part->timer = 0;
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}
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}
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}
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int main(void)
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{
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InitWindow(1280, 640, "raylib");
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SetTargetFPS(60);
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static ParticleSystem_t part_sys = {0};
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init_particle_system(&part_sys);
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Texture2D tex = LoadTexture("res/bomb.png");
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Sprite_t spr = {
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.texture = &tex,
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.frame_size = (Vector2){tex.width, tex.height},
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.origin = (Vector2){0, 0},
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.anchor = (Vector2){tex.width / 2, tex.height / 2},
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.frame_count = 0,
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.current_frame = 0,
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.elapsed = 0,
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.speed = 0,
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.name = "test_spr"
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};
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EmitterConfig_t conf ={
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.launch_range = {0, 360},
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.speed_range = {400, 2000},
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.particle_lifetime = {30, 110},
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.update_func = &simple_particle_system_update
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};
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ParticleEmitter_t emitter = {
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.config = conf,
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.n_particles = MAX_PARTICLES,
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.one_shot = true,
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.spr = &spr,
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};
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bool key_press = false;
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while(!WindowShouldClose())
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{
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if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
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{
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key_press = true;
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}
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else if (key_press && IsMouseButtonReleased(MOUSE_BUTTON_LEFT))
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{
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emitter.position = GetMousePosition();
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add_particle_emitter(&part_sys, &emitter);
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key_press = false;
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}
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update_particle_system(&part_sys);
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BeginDrawing();
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ClearBackground(RAYWHITE);
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draw_particle_system(&part_sys);
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EndDrawing();
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}
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UnloadTexture(tex);
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CloseWindow();
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deinit_particle_system(&part_sys);
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}
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