diff --git a/src/particle_manager.odin b/src/particle_manager.odin new file mode 100644 index 0000000..cba2df6 --- /dev/null +++ b/src/particle_manager.odin @@ -0,0 +1,40 @@ +package game + +import rl "vendor:raylib" + +Particle :: struct { + pos: rl.Vector2, + vel: rl.Vector2, + color: rl.Color, + life: f32, + max_life: f32, + size: f32 +} + +update_particles :: proc(particles: ^[dynamic]Particle, dt: f32) { + #reverse for &p, i in particles { + p.life -= dt + if p.life <= 0 { + unordered_remove(particles, i) + continue + } + + // update live particles + p.pos += p.vel * dt + + // times the velocitt so we can slow it down over time + p.vel *= 0.92 + } +} + +render_particles :: proc(particles: [dynamic]Particle) { + rl.BeginBlendMode(.ADDITIVE) + + for p in particles { + alpha := u8(255 * (p.life / p.max_life)) + col := rl.Color{p.color.r, p.color.g, p.color.b, alpha} + rl.DrawRectangleV(p.pos, {p.size, p.size}, col) + } + + rl.EndBlendMode() +} \ No newline at end of file