Player_Raycast gd script

extends Sprite

onready var ray = $RayCast2D

var speed = 256 # big number because it's multiplied by delta
var tile_size = 64 # size in pixels of tiles on the grid

var last_position = Vector2() # last idle position
var target_position = Vector2() # desired position to move towards
var movedir = Vector2() # move direction

func _ready():
	position = position.snapped(Vector2(tile_size, tile_size)) # make sure player is snapped to grid
	last_position = position
	target_position = position

func _process(delta):
	# MOVEMENT
	if ray.is_colliding():
		var collision = ray.get_collider()
		if collision is TileMap:
			var tile_name = get_tile(collision)
			if !(tile_name.begins_with("Walkable")):
				position = last_position
				target_position = last_position
			else:
				position += speed * movedir * delta

				if position.distance_to(last_position) >= tile_size - speed * delta: # if we've moved further than one space
					position = target_position # snap the player to the intended position


	else:
		position += speed * movedir * delta

		if position.distance_to(last_position) >= tile_size - speed * delta: # if we've moved further than one space
			position = target_position # snap the player to the intended position

	# IDLE
	if position == target_position:
		get_movedir()
		last_position = position # record the player's current idle position
		target_position += movedir * tile_size # if key is pressed, get new target (also shifts to moving state)

# GET DIRECTION THE PLAYER WANTS TO MOVE
func get_movedir():
	var LEFT = Input.is_action_pressed("ui_left")
	var RIGHT = Input.is_action_pressed("ui_right")
	var UP = Input.is_action_pressed("ui_up")
	var DOWN = Input.is_action_pressed("ui_down")

	movedir.x = -int(LEFT) + int(RIGHT) # if pressing both directions this will return 0
	movedir.y = -int(UP) + int(DOWN)

	if movedir.x != 0 && movedir.y != 0: # prevent diagonals
		movedir = Vector2.ZERO
	if movedir != Vector2.ZERO:
		ray.cast_to = movedir * tile_size / 2

func get_tile(tile_map):
	if tile_map is TileMap:
    # Find the character's position in tile coordinates
#		print("World Position = {x},{y}".format({"x":position.x,"y":position.y}))
#		print("Raycast vector = {x},{y}".format({"x":ray.cast_to.x,"y":ray.cast_to.y}))
		var v = Vector2(tile_size / 2 , tile_size /2)
		var tile_pos = tile_map.world_to_map(position + v + ray.cast_to)
		var tile_id = tile_map.get_cellv(tile_pos)
		if (tile_id == -1):
			return "None"
		else:
			return tile_map.tile_set.tile_get_name(tile_id)