class_name Pacman
extends AnimatedSprite2D

@export var tileset: PacTiles

const UP := Vector2(0,-1)
const DOWN := Vector2(0,1)
const LEFT := Vector2(-1,0)
const RIGHT := Vector2(1,0)
#the direction that the player has chosen
var direction: Vector2 = LEFT
# the direction pacman is traveling in
var currentDirection: Vector2 = LEFT
var currentTile: Vector2

var speed: float = 88

# Called when the node enters the scene tree for the first time.
func _ready():
	autoplay = "default"


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	currentTile.x = int(position.x / 8)
	currentTile.y = int(position.y / 8)
	
	#print(getCurrentTile().isPacmanIntersection)
	
	# tile trail for debugging
	#getCurrentTile().texture = load("res://white.png")
	
	var currentTileRef: Tile = getCurrentTile()
	
	if currentTileRef.hasBite:
		currentTileRef.hasBite = false
		eatBite()
	
	if currentTileRef.hasPower:
		currentTileRef.hasPower = false
		eatPower()
	
	if currentDirection.x == direction.x:
		currentDirection = direction
	if currentDirection.y == direction.y:
		currentDirection = direction
	
	var nextTile: Tile = getTileByVector(currentTile+currentDirection)
	var chosenNextTile: Tile = getTileByVector(currentTile+direction)
	
	if !chosenNextTile.isWall && isTouching(nextTile):
		currentDirection = direction
	
	match currentDirection:
		UP:
			rotation = deg_to_rad(270)
		DOWN:
			rotation = deg_to_rad(90)
		LEFT:
			rotation = deg_to_rad(180)
		RIGHT:
			rotation = deg_to_rad(0)
	print(rotation)
	
	if nextTile.isWall && isTouching(nextTile):
		position=position
		pause()
	else:
		position += currentDirection * speed * delta
		play()

func _unhandled_key_input(event):
	if event.is_action_pressed("ui_up"):
		direction = UP
	if event.is_action_pressed("ui_down"):
		direction = DOWN
	if event.is_action_pressed("ui_left"):
		direction = LEFT
	if event.is_action_pressed("ui_right"):
		direction = RIGHT

func getCurrentTile() -> Tile:
	return tileset.tiles[currentTile.y][currentTile.x]

func getTile(x: int,y: int) -> Tile:
	return tileset.tiles[y][x]

func getTileByVector(vector: Vector2) -> Tile:
	return tileset.tiles[vector.y][vector.x]

func isTouching(tile: Tile):
	var xDifference = abs(tile.global_position.x - position.x)
	var yDifference = abs(tile.global_position.y - position.y)
	
	if xDifference >= 8 && xDifference <= 9:
		return true
	if yDifference >= 8 && yDifference <= 9:
		return true
	
	return false

func eatBite():
	pass

func eatPower():
	pass