点击并通过框架AS3拖

本文介绍了点击并通过框架AS3拖的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一帧一帧动画。我希望能够通过动画点击并在舞台上来回拖动和移动。即我想点击，并从左至右，使动画向前走，并从右向左拖动，使动画倒退。

I have a frame-by-frame animation. I want to be able to click and drag on the stage back and forth and traverse through the animation. I.e. I want to click and drag from left to right to make the animation go forwards and right to left to make the animation go backwards.

我将如何实现这一目标？

How would I achieve this?

我想提出一个假设，即会有一些数学参与计算鼠标位置，并穿越到正确的框架，但我将如何做到这一点？

I am making an assumption that there will be some maths involved in calculating mouse position and traversing to the correct frame, but how would I do this?

推荐答案

在这里，您有（编辑的版本）

Here you are (edited version)

import flash.events.MouseEvent; import flash.display.MovieClip; import flash.display.Sprite; var clickedMouseX:int; var clickedFrame:uint; var backgroundClip:Sprite = getChildByName("background") as Sprite; var clip:MovieClip = getChildByName("animation") as MovieClip; clip.stop(); clip.mouseEnabled = false; backgroundClip.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown); backgroundClip.addEventListener(MouseEvent.MOUSE_UP, onMouseUp); function onMouseDown(event:MouseEvent):void { backgroundClip.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove); clickedMouseX = backgroundClip.mouseX; clickedFrame = clip.currentFrame; } function onMouseUp(event:MouseEvent):void { backgroundClip.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMove); } function onMouseMove(event:MouseEvent):void { var delta:int = backgroundClip.mouseX - clickedMouseX; var wantedFrame:uint = (clickedFrame + delta * clip.totalFrames / backgroundClip.width) % clip.totalFrames; while (wantedFrame < 1) { wantedFrame += clip.totalFrames; } clip.gotoAndStop(wantedFrame); }

干杯！