class_name AsteroidExplosionVFX
extends ExplosionVFXBase

# Tumbling rock-chunk debris, distinct from the energy-ship light-burst
# style - asteroids are matter, not light.

const COLOR: Color = Color(0.65, 0.5, 0.35)


static func spawn(parent: Node, world_position: Vector2) -> void:
	var vfx: AsteroidExplosionVFX = AsteroidExplosionVFX.new()
	vfx.position = world_position
	parent.add_child(vfx)


func _random_particle_size() -> float:
	return randf_range(3.0, 7.0)


func _draw_particle(p: Dictionary, alpha: float) -> void:
	var s: float = p["size"]
	var local_pts: PackedVector2Array = PackedVector2Array([
		Vector2(-s, -s * 0.6), Vector2(s * 0.7, -s * 0.5),
		Vector2(s, s * 0.5), Vector2(-s * 0.6, s),
	])
	var world_pts: PackedVector2Array = PackedVector2Array()
	for pt in local_pts:
		world_pts.append(p["pos"] + pt.rotated(p["rot"]))
	draw_colored_polygon(world_pts, Color(COLOR.r, COLOR.g, COLOR.b, alpha))