public boolean obstacle_ahead (final Room room) {

		int xTest = 0;
		int yTest = 0;

		if (direction == Robot.NORTH) {
			xTest = x;
			yTest = y + 1;
		}
		else if (direction == Robot.SOUTH) {
			xTest = x;
			yTest = y - 1;
		}
		else if (direction == Robot.EAST) {
			xTest = x + 1;
			yTest = y;
		}
		else {
			xTest = x - 1;
			yTest = y;
		}
		return (room.isObstacle (xTest, yTest));
	}