package main

import rl "vendor:raylib"

main :: proc() {
	rl.InitWindow(800, 600, "grimm sprite stacking")
	rl.SetTargetFPS(60)
	defer rl.CloseWindow()

	sprite := rl.LoadTexture("assets/Chair_strip12.png")
	defer rl.UnloadTexture(sprite)

	sprite_size :: 12
	stack_count :: 11

	camera := rl.Camera2D{}
	camera.zoom = 3
	camera.offset = {400, 300}

	spacing: f32 = 1
	rotation: f32 = 0

	for !rl.WindowShouldClose() {
		if rl.IsKeyPressed(rl.KeyboardKey.SPACE) {
			spacing += 0.5
		}

		rl.BeginDrawing()
		rl.ClearBackground(rl.BLUE)

		rl.BeginMode2D(camera)

		for i in 0 ..< stack_count {
			source := rl.Rectangle {
				x      = f32(i * sprite_size),
				y      = 0,
				width  = sprite_size,
				height = sprite_size,
			}

			destination := rl.Rectangle {
				x      = 0,
				y      = -spacing * f32(i),
				width  = sprite_size,
				height = sprite_size,
			}

			origin := rl.Vector2{}
			origin.x = sprite_size / 2
			origin.y = sprite_size / 2

			rl.DrawTexturePro(sprite, source, destination, origin, rotation, rl.WHITE)
		}

		rl.EndMode2D()
		rl.EndDrawing()

		rotation += 1
	}
}