extends TileMap

signal player_moved(track_offset)
signal wrong_way(coords)
# Declare member variables here. Examples:
# var a = 2
# var b = "text"

# TODO:
# - Find a mean to import tracks (arrays of cell coordinates). 
# ( - Autopopulate the map according to track data )
# - Build the track Curve2D from track and tiles data
# - Keyboard controls !!

const TRACK_TILES = [
	Vector2(1,0), Vector2(2,0), Vector2(3,0), Vector2(3,1),
	Vector2(2,1), Vector2(1,1), Vector2(0,1), Vector2(0,0)
]

var laps = 0
var current_cell = TRACK_TILES[0]

func get_track_offset(coords):
	var offset = float(TRACK_TILES.find(coords)) / float(len(TRACK_TILES))
	return offset

# Called when the node enters the scene tree for the first time.
func _ready():
	pass # Replace with function body.

func _input(event):
	# Check if the mouse if following the tiles track
	if event is InputEventMouseMotion:
		var hover_cell = world_to_map(event.position)
		if hover_cell != current_cell:  # The mouse moved to a new cell
			# Check the tile is on path
			if TRACK_TILES.find(hover_cell) != -1:
				# Check if a lap is finished
				if hover_cell == TRACK_TILES[0] and current_cell == TRACK_TILES[-1]:
					laps += 1
					get_node("/root/Node2D/GUI/Laps/Value/").set_text("%d" % laps)
				# Check we are following the path
				if TRACK_TILES[TRACK_TILES.find(hover_cell) - 1] == current_cell:
					emit_signal("player_moved", laps + get_track_offset(hover_cell))
					emit_signal("wrong_way", Vector2(-1, -1))
					current_cell = hover_cell
				else:
					emit_signal("wrong_way", map_to_world(hover_cell))
			
		
# Called every frame. 'delta' is the elapsed time since the previous frame.
#func _process(delta):
#	pass