extends Node3D

@onready var player: CharacterBody3D = get_tree().get_first_node_in_group("player")
@onready var player_ray: RayCast3D = get_tree().get_first_node_in_group("player_ray")
@onready var construct: Node3D = get_tree().get_first_node_in_group("Constructs")
@onready var wind_dir = self.get_parent().find_child("Snow_Particles").wind_direction

## Positive X is North
## Negative X is South
## Positive Z is East
## Negative Z is West
## North = 0, East = 1, South = 2, West = 3

var snowball_scene = preload("res://scenes/props/drifting/snowball.tscn")
var snowball_scene_2 = preload("res://scenes/props/drifting/snowball_2.tscn")
var snowball_scene_3 = preload("res://scenes/props/drifting/snowball_3.tscn")
var snowball
var wind_ray: String = "NorthRay"

var last_snow_amount: int

@export var snow_amount: int = 0

func _ready() -> void:
	update_snow()

func _physics_process(_delta: float) -> void:
	
	##TODO Fix it so snow does not accumulate when player is in the way of spot
	if snow_amount < last_snow_amount or (snow_amount > last_snow_amount and self.find_child("Spot_Area").overlaps_body(player) == false):
		update_snow()

func blow_snow():
	
	## If snow spot has snow get the wind direction name
	if self.snow_amount != 0:
		match wind_dir:
			0:
				wind_ray = "North_Ray"
			1:
				wind_ray = "East_Ray"
			2:
				wind_ray = "South_Ray"
			3:
				wind_ray = "West_Ray"

		##If north of snow pile there is something
		if self.find_child(wind_ray).is_colliding():

			##If thing north of snow pile is snow pile
			if self.find_child(wind_ray).get_collider().is_in_group("snow_spot"):

				##If snow pile to north is not full
				if self.find_child(wind_ray).get_collider().get_parent().snow_amount < 3:
					
					##Add snow to adjacent pile and subtract snow from current pile
					self.find_child(wind_ray).get_collider().get_parent().snow_amount += 1
					self.snow_amount -= 1
					#update_snow()
		
func update_snow():
	#print(snowball)
	##Remove old snowball if one exists
	if is_instance_valid(snowball):
		snowball.queue_free()
		snowball = null
	
	##instance new snowball
	match snow_amount:
		0:
			pass
		1:
			snowball = snowball_scene.instantiate()
		2:
			snowball = snowball_scene_2.instantiate()
		3: 
			snowball = snowball_scene_3.instantiate()
	
	##Add snowball
	##TODO Fix bug where when pile is emptied throws
	##ERROR: Can't add child 'Snowball' to 'Snow_Spot#', already has parent 'Snow_Spot#'
	if is_instance_valid(snowball):
		add_child(snowball)
	
	##update last snow amount
	last_snow_amount = snow_amount