there is a new setting, wall_collide.

this decides if the player should collide into walls, or just act like it's a world where hitting the right edge brings you to the left edge, etc.

few new options added, tail has set functions for x and y, player has a bound function that will bring the player's head within bound, game will call player bound if a wall collision happens and wall_collide is false, appropriate settings functions were added.