left: function() { return key.left() || (pointer.isListening && pointer.percentX < 0.4); },
up: function() { return key.up() || (pointer.isListening && pointer.percentY < 0.4); },
down: function() { return key.down() || (pointer.isListening && pointer.percentY > 0.6); }
right: function() { return key.right() || (pointer.isListening && pointer.percentX > 0.6); },