Code:
onClipEvent (load) {
	power = 2;
	radius = 6;
	_x = 360;
	_y = 265;
}
onClipEvent (enterFrame) {
	if (Key.isDown(Key.LEFT)) {
		_x -= power;
	}
	if (Key.isDown(Key.RIGHT)) {
		_x += power;
	}
	if (Key.isDown(Key.UP)) {
		_y -= power;
	}
	if (Key.isDown(Key.DOWN)) {
		_y += power;
	}
	while (_root.levels.wall.hitTest(_x, _y+radius, true)) {
		_y--;
	}
	while (_root.levels.wall.hitTest(_x, _y-radius, true)) {
		_y++;
	}
	while (_root.levels.wall.hitTest(_x-radius, _y, true)) {
		_x++;
	}
	while (_root.levels.wall.hitTest(_x+radius, _y, true)) {
		_x--;
	}
	if (_root.levels.exit.hitTest(_x, _y, true)) {
		_root.levels.gotoAndStop(2);
	}
	if ((_root.cop.hitTest(_x, _y+radius, true)) or (_root.cop.hitTest(_x, _y-radius, true)) or (_root.cop.hitTest(_x+radius, _y, true)) or (_root.cop.hitTest(_x-radius, _y, true))) {
		_x = 360;
		_y = 265;
	}
}


() _x _y. , . ?