private var first = Vector2.zero;

private var second = Vector2.zero;

function Update () {

}

function OnGUI () {

if(Event.current.type == EventType.MouseDown){//记录鼠标按下的位置

first = Event.current.mousePosition ;

}

if(Event.current.type == EventType.MouseDrag){//记录鼠标拖动的位置

second = Event.current.mousePosition ;

if(second.x

print(“left”);

}

if(second.x>first.x){//拖动的位置的x坐标比按下的位置的x坐标大时,响应向右事件

print(“right”);

}

first = second;

}

}