Az movement

This is a text-based game. User can view a colored ascii map in their browser and a group of buttons. User can click buttons to determine direction they want their character to move. Characters can circumnavigate world. 
This covers all basis in a single line of code:
-(self.x_coordinate % X_BOUNDARY == 0) is better than self.x_coordinate == X_BOUNDARY because the later does not account for positive and negative cases as where modulo does.

-(self.x_Coordinate != 0) is needed because without it, modulo will consider being at point zero the same as being at a boundary and therefore never let a player move.

Coordinate zero is different than boundary