使用按钮而不是箭头键移动动画影片剪辑

Question

我正在尝试开发一款游戏，我希望我的角色在我单击按钮时运行，并且在我按住按钮时继续运行。我是 ActionScript 3 的新手，所以我有点迷路了。

我找到了满足我要求的代码；但它使用箭头键，如下所示：

function moveRunKei() {
    if (Key.isDown(Key.RIGHT)) {
        dx = 15; //speed
        runKei._xscale = 50;
    } else if (Key.isDown(Key.LEFT)) {
        dx = -15;
        runKei._xscale = -50;
    } else {
        dx = 0;
    }

    runKei._x += dx;

    if (runKei._x < 100) runKei._x = 100; //30
    if (runKei._x > 550) runKei._x = 550;

    if (dx != 0 && runKei._currentframe == 1) {
        runKei.gotoAndPlay("run");
    } else if (dx == 0 && runKei._currentframe != 1) {
        runKei.gotoAndStop("stand");
    }
}

this.onEnterFrame = function(){
    moveRunKei();
}

我需要能够使用按钮来做到这一点。

/////////////////////////////////////// /////////////////////////////////////////p>

import flash.events.Event;

var mouseDown:Boolean;
var speed:Number=4;
addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
addEventListener(Event.ENTER_FRAME, onEnterFrame);


function onMouseDown(event:MouseEvent):void
{
  mouseDown = true;
}

function onMouseUp(event:MouseEvent):void
{
  mouseDown = false;
}

function onEnterFrame(event:Event):void
{
  if (mouseDown)
  {
        runKei.gotoAndPlay("Run");
    runKei.x += speed;

  }

}

当我按住按钮时，这段代码能够让我的角色连续移动，但它在移动时没有动画（角色冻结，直到我释放按钮） - 我不知道如何解释它。

Answer 1

您需要在每个移动按钮上添加鼠标按下和鼠标向上的事件侦听器。然后使用布尔值来跟踪按钮是否按下。

值得一提的是，您链接的代码似乎是 actionscript2，因此我已将其更改为与 as3 一起使用

var leftDown:Boolean = false;
var rightDown:Boolean = true;

leftButton.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown)
rightButton.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown)
leftButton.addEventListener(MouseEvent.MOUSE_UP, onMouseUp)
rightButton.addEventListener(MouseEvent.MOUSE_UP, onMouseUp)
leftButton.addEventListener(MouseEvent.MOUSE_OUT, onMouseUp)
rightButton.addEventListener(MouseEvent.MOUSE_OUT, onMouseUp)

function onMouseDown(e:MouseEvent):void
{
    //since you can't click on two things at once, this is fine.
    rightDown = (e.target == rightButton);
    leftDown = (e.target == rightButton);
}

function onMouseDown(e:MouseEvent):void
{
    //since you can't click on two things at once, this is fine.
    rightDown = (e.target == rightButton);
    leftDown = (e.target == leftButton);
}

function moveRunKei()
{
    if (rightDown) {
        dx = 15; //speed
        runKei.scaleX = -0.5;
    } else if (leftDown) {
        dx = -15;
        runKei.scaleX = -0.5;
    } else {
        dx = 0;
    }

    runKei.x += dx;

    if (runKei.x < 100) runKei.x = 100; //30
    if (runKei.x > 550) runKei.x = 550;

    if (dx != 0 && runKei.currentFrame == 1)
    {
        runKei.gotoAndPlay("run");
    }
    else if (dx == 0 && runKei.currentFrame != 1)
    {
        runKei.gotoAndStop("stand");
    }
}

    this.addEventListener(Event.ENTER_FRAME, onEnterFrame);

function onEnterFrame(e:Event):void
{
    moveRunKei();
}