extends Area2D

# TODO: Have like 1 in 4 different sprites (and maybe shapes) the comet can be

signal exploded (new_size: SIZE, current_position: Vector2)

enum SIZE {SMALL, MEDIUM, LARGE}

@export var current_size : SIZE = SIZE.LARGE

var size_data = {
	SIZE.SMALL  : {"Scale": 0.5, "Speed-Multi": 1.5},
	SIZE.MEDIUM : {"Scale": 1.0, "Speed-Multi": 1.0},
	SIZE.LARGE  : {"Scale": 2.5, "Speed-Multi": 0.5}
}

var movement_speed : int
var movement_speed_min : int = 50
var movement_speed_max : int = 250
var movement_direciton := Vector2.UP

var rotation_speed : int
var rotaion_direction : int

func _ready() -> void:
	movement_speed = randi_range(movement_speed_min, movement_speed_max)
	movement_speed *= size_data[current_size]["Speed-Multi"]

	rotaion_direction = randi_range(0, 1)
	if rotaion_direction < 1:
		rotaion_direction = -1
	rotation_speed = randi_range(50, 150)
	rotate(randi_range(0, 360))

	self.scale *= size_data[current_size]["Scale"]

func _physics_process(delta: float) -> void:
	$CollisionPolygon2D.rotate(deg_to_rad(rotaion_direction * rotation_speed * delta))
	$Sprite2D.rotate(deg_to_rad(rotaion_direction * rotation_speed * delta))

	position += movement_direciton.rotated(rotation) * movement_speed * delta

	# Screen Wrap
	var viewport_size := get_viewport_rect().size
	position.x = wrap(position.x, 0, viewport_size.x)
	position.y = wrap(position.y, 0,viewport_size.y)

func _on_body_entered(body: Node2D) -> void:
	if body.is_in_group("ship"):
		body.crash()

func _on_area_entered(area: Area2D) -> void:
	if area.is_in_group("bullet"):
		area.queue_free()
		$AnimationPlayer.play("explode")

func explode() -> void:
	exploded.emit(current_size - 1, global_position)
	queue_free()