Question

从上面看，我的角色动画片段水平和垂直移动。在起始位置，字符鼻子朝向屏幕顶部，因此当按下左键时，它应向左旋转90度，向左旋转+继续向左移动。

因为我使用了一个运动功能+旋转它现在很好地旋转90度旋转并向左旋转圆圈。我理解为什么会这样，但我的问题是你;

如何使角度旋转一次，并继续朝向该方向移动？

var leftArrow:Boolean;
var speed:Number = 4;
var charRadius:Number = 10;

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
stage.addEventListener(KeyboardEvent.KEY_UP, keyReleased);
stage.addEventListener(Event.ENTER_FRAME, everyFrame);

function keyPressed(event:KeyboardEvent):void {
    if (event.keyCode == Keyboard.LEFT) {
        leftArrow = true;
    }

}

function keyReleased(event:KeyboardEvent):void {
    if (event.keyCode == Keyboard.LEFT) {
        leftArrow = false;
    }
}

function everyFrame(event:Event):void {
    var mazehit:Boolean = false;
    if (leftArrow) {

        for(var i:int = 0; i < speed; i++) {
            if(bounds.hitTestPoint(char.x - charRadius - i, char.y, true)) {



                mazehit = true;
                break;
            }
        }
        if(!mazehit) {

            char.x -= speed;
            char.rotation -= 90;

        }

Answer 1

按下该键可能有助于设置字符状态变量，然后使用该状态为该字符设置动画。

例如，在按下键时设置旋转和x和y速度，然后使用这些值更新帧事件中的字符x和y以及旋转。

var leftArrow:Boolean;
var rightArrow:Boolean;
var speed:Number = 4;
var vx:Number = 0;
var vy:Number = 0;
var heading:Number = 0;
var charRadius:Number = 10;

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
stage.addEventListener(KeyboardEvent.KEY_UP, keyReleased);
stage.addEventListener(Event.ENTER_FRAME, everyFrame);

function keyPressed(event:KeyboardEvent):void {
    if (event.keyCode == Keyboard.LEFT) {
        vx = -speed;
        vy = 0;
        heading = 90;
        leftArrow = true;
    }
    else if (event.keyCode == Keyboard.RIGHT) {
        vx = speed;
        vy = 0;
        heading = -90;
        rightArrow = true;
    }


}

function keyReleased(event:KeyboardEvent):void {
    if (event.keyCode == Keyboard.LEFT) {
        leftArrow = false;
    }
    else if (event.keyCode == Keyboard.RIGHT) {
        rightArrow = false;
    }
}

function everyFrame(event:Event):void {
    var mazehit:Boolean = false;
    if (leftArrow || rightArrow) {

        for(var i:int = 0; i < speed; i++) {
            if(bounds.hitTestPoint(char.x - charRadius - i, char.y, true)) {
                mazehit = true;
                break;
            }
        }
        if(!mazehit) {

            char.x += vx;
            char.y += vy;
            char.rotation = heading;

        }

AS3如何停止循环旋转？

1 个答案: