adds track parser from txt files

CarSprite.gd

@@ -12,8 +12,8 @@ func _ready():
 
 func _process(delta):
 	"""
-	The sprite has its own representation of rotation, so we need to tweak things.
-	The sprite inherits orientation from its parent (TrackFollow) that must be canceled.
+	The sprite contains a representation of rotation in its own, so we need to tweak things.
+	In particular, the sprite inherits orientation from its parent (TrackFollow) that must be canceled.
 	"""
 	var global = get_global_rotation_degrees()
 	var local = get_rotation_degrees()