class_name Citizen extends CharacterBody2D

var direction: Board.Direction:
	set(new_direction):
		direction = new_direction
		if direction == Board.Direction.NONE:
			idle()
		else:
			walk()

var speed: float = 50
var board: Board
var current_tile_coords: Vector2i

@onready var animated_sprite: AnimatedSprite2D = %AnimatedSprite
@onready var sprite_collision: CollisionShape2D = %SpriteCollision
@onready var tile_area: Area2D = %TileArea

func set_offset(offset: Vector2) -> void:
	animated_sprite.position = offset
	sprite_collision.position = offset

func _process(delta: float) -> void:
	var motion: Vector2
	match direction:
		Board.Direction.UP:
			#position = position.move_toward(position + Vector2.UP, speed * delta)
			motion = Vector2.UP * speed * delta
		Board.Direction.DOWN:
			#position = position.move_toward(position + Vector2.DOWN, speed * delta)
			motion = Vector2.DOWN * speed * delta
		Board.Direction.RIGHT:
			#position = position.move_toward(position + Vector2.RIGHT, speed * delta)
			motion = Vector2.RIGHT * speed * delta
		Board.Direction.LEFT:
			#position = position.move_toward(position + Vector2.LEFT, speed * delta)
			motion = Vector2.LEFT * speed * delta
	move_and_collide(motion)

func idle() -> void:
	animated_sprite.play("idle")

func walk() -> void:
	match direction:
		Board.Direction.UP:
			animated_sprite.play("walk_up")
		Board.Direction.DOWN:
			animated_sprite.play("walk_down")
		Board.Direction.LEFT:
			animated_sprite.flip_h = true
			animated_sprite.play("walk_right")
		Board.Direction.RIGHT:
			animated_sprite.flip_h = false
			animated_sprite.play("walk_right")

func check_for_wall() -> void:
	var tile_walls = board.wall_map.get_cell_scene(current_tile_coords).walls
	if tile_walls.has(direction):
		direction = Board.get_next_direction(direction)
		check_for_wall()

func check_for_turn(tile: Tile) -> void:
	if tile is Turn:
		direction = tile.direction

func check_for_building() -> void:
	if board.buildings.has(current_tile_coords + Board.get_direction_vector(direction)):
		var building = board.buildings[current_tile_coords + Board.get_direction_vector(direction)]
		if !building.can_citizen_enter(current_tile_coords, direction):
			direction = Board.get_next_direction(direction)
			check_for_building()

func handle_tile_area_entered(area: Area2D):
	var tile = area.get_parent()
	current_tile_coords = board.tile_map.local_to_map(tile.position)
	check_for_building()
	check_for_turn(tile)
	check_for_wall()