gameplay prototype

general/particles.odin

@@ -0,0 +1,60 @@
+package main
+
+import "core:rexcode/isa/x86/tablegen/generated"
+import rl "vendor:raylib"
+
+Particle :: union {
+	SpriteParticle,
+	LineParticle,
+}
+
+SpriteParticle :: struct {
+	pos:      rl.Vector2,
+	texture:  rl.Texture2D,
+	tint:     rl.Color,
+	lifetime: f32,
+}
+LineParticle :: struct {
+	pos1:     rl.Vector2,
+	pos2:     rl.Vector2,
+	tint:     rl.Color,
+	lifetime: f32,
+}
+
+particles: [dynamic]Particle
+
+spawn_particle :: proc(particle: Particle) {
+	append(&particles, particle)
+}
+
+run_particle_system :: proc() {
+	for &p, i in particles {
+		draw_particle(&p, i)
+	}
+}
+
+draw_particle :: proc(particle: ^Particle, index: int) {
+	switch &p in particle {
+	case SpriteParticle:
+		draw_sprite_particle(&p, index)
+
+	case LineParticle:
+		draw_line_particle(&p, index)
+	}
+}
+
+draw_sprite_particle :: proc(particle: ^SpriteParticle, index: int) {
+	rl.DrawTexture(particle.texture, i32(particle.pos.x), i32(particle.pos.y), particle.tint)
+	particle.lifetime -= rl.GetFrameTime()
+	if particle.lifetime <= 0 {
+		particles[index] = nil
+	}
+}
+
+draw_line_particle :: proc(particle: ^LineParticle, index: int) {
+	rl.DrawLineV(particle.pos1, particle.pos2, particle.tint)
+	particle.lifetime -= rl.GetFrameTime()
+	if particle.lifetime <= 0 {
+		particles[index] = nil
+	}
+}