将鼠标悬停在 DPAD 上有时会使角色朝一个方向无限移动

我的游戏中有一个 DPAD，当玩家按住左 DPAD 时，如果他将触摸移动到向上 DPAD 并让我们走，玩家会继续向左方向前进。

如果您按住 a 方向，则它也会起作用，假设向上继续按住，但移开向上 DPAD，有时您可能会继续朝该方向前进。

我试图防止这种情况发生：

• 在方向点击时，触发器会检查您是否处于运动状态，或者 已经走向不同的方向
• 设置碰撞来强制这些变量变为 false；又名， 你撞到了什么东西，inMotion = false，等等

这就是我能想到的关于如何解决这个问题的全部内容。

另外，我使用了很多变量进行检查，是否最好将我的函数更改为返回布尔值，或者这种方式可以吗？只是好奇。

游戏类

package 
{
    import flash.display.MovieClip;
    import flash.utils.Timer;
    import flash.events.TimerEvent;

    public class Game extends MovieClip
    {
        public var area1:Boolean = true;
        public var area2:Boolean = false;
        public var area3:Boolean = false;

        public var player1:Boolean = true;
        public var player2:Boolean = false;

        public var upWalkspeed:Number = -5;
        public var downWalkspeed:Number = 5;
        public var leftWalkspeed:Number = -5;
        public var rightWalkspeed:Number = 5;

        public var inMotion:Boolean = false;
        public var goingUp:Boolean = false;
        public var goingDown:Boolean = false;
        public var goingLeft:Boolean = false;
        public var goingRight:Boolean = false;

        public var playerPosKeeper_mc:MovieClip = new mc_PlayerPosKeeper();

        public var up_dpad:MovieClip = new dpad_Up();
        public var down_dpad:MovieClip = new dpad_Down();
        public var left_dpad:MovieClip = new dpad_Left();
        public var right_dpad:MovieClip = new dpad_Right();
        public var menu_dpad:MovieClip = new dpad_Menu();
        public var run_dpad:MovieClip = new dpad_Menu();

        public var barrierRoof1_game:MovieClip = new game_BarrierRoof();
        public var barrierRoof2_game:MovieClip = new game_BarrierRoof();
        public var barrierSide1_game:MovieClip = new game_BarrierSide();
        public var barrierSide2_game:MovieClip = new game_BarrierSide();

        public var StageCollisions:Array = new Array(barrierRoof1_game, barrierRoof2_game, barrierSide1_game, barrierSide2_game);
        // fix MC goes after not before ||| public var player1States:Array = new Array(mc_P1D1,mc_P1D2,"mc_P1L1","mc_P1L2","mc_P1R1","mc_P1R2","mc_P1U1","mc_P1U2");

        public function Game()
        {
            trace("SUCCESS | Constructed Game Class");

            var aMove:Movement = new Movement(this);
            addChild(aMove);

        }
    }
}

动作类

package 
{
    import flash.display.Stage;
    import flash.display.MovieClip;
    import flash.events.Event;
    import flash.events.TouchEvent;
    import flash.net.dns.AAAARecord;
    import flash.ui.Multitouch;
    import flash.ui.MultitouchInputMode;


    public class Movement extends MovieClip
    {
        public function Movement(main:Game)
        {
            trace("SUCCESS | Constructed Movement Class");

            addChild(main.playerPosKeeper_mc);
            main.playerPosKeeper_mc.x = 384;
            main.playerPosKeeper_mc.y = 46;

            addChild(main.up_dpad);
            main.up_dpad.x = 55;
            main.up_dpad.y = 336;

            addChild(main.down_dpad);
            main.down_dpad.x = 57;
            main.down_dpad.y = 432;

            addChild(main.left_dpad);
            main.left_dpad.x = 19;
            main.left_dpad.y = 372;

            addChild(main.right_dpad);
            main.right_dpad.x = 118;
            main.right_dpad.y = 372;

            addChild(main.menu_dpad);
            main.menu_dpad.x = 61;
            main.menu_dpad.y = 377;

            addChild(main.run_dpad);
            main.run_dpad.x = 684;
            main.run_dpad.y = 369;

            addChild(main.barrierRoof1_game);
            main.barrierRoof1_game.x = 0;
            main.barrierRoof1_game.y = 0;

            addChild(main.barrierRoof2_game);
            main.barrierRoof2_game.x = 0;
            main.barrierRoof2_game.y = 470;

            addChild(main.barrierSide1_game);
            main.barrierSide1_game.x = 0;
            main.barrierSide1_game.y = 0;

            addChild(main.barrierSide2_game);
            main.barrierSide2_game.x = 790;
            main.barrierSide2_game.y = 0;

            Multitouch.inputMode = MultitouchInputMode.TOUCH_POINT;

            main.up_dpad.addEventListener(TouchEvent.TOUCH_BEGIN, upBeginInput);
            main.down_dpad.addEventListener(TouchEvent.TOUCH_BEGIN, downBeginInput);
            main.left_dpad.addEventListener(TouchEvent.TOUCH_BEGIN, leftBeginInput);
            main.right_dpad.addEventListener(TouchEvent.TOUCH_BEGIN, rightBeginInput);

            // Maybe add diagnol direction buttons in the future?;


            //  !!  NOTE  !!
            //  Use some sort of value, maybe a return or a variable to sync up animations
            // to if the player is moving, in the future

            // Movement Directions

            // Start of UP Movement
            function upBeginInput(e:TouchEvent):void
            {
                main.inMotion = true;
                main.goingUp = true;
                main.goingDown = false;
                main.goingLeft = false;
                main.goingRight = false;
                main.up_dpad.addEventListener(TouchEvent.TOUCH_END, upEndInput);
                addEventListener(Event.ENTER_FRAME,sendUpMovement);
            }
            function upEndInput(e:TouchEvent):void
            {
                main.inMotion = false;
                main.goingUp = false;
                main.up_dpad.removeEventListener(TouchEvent.TOUCH_END, upEndInput);
                removeEventListener(Event.ENTER_FRAME,sendUpMovement);
            }
            function sendUpMovement():void
            {
                if (main.inMotion == true && main.goingUp == true && main.goingDown == false && main.goingLeft == false && main.goingRight == false)
                {
                    movePlayer(0, main.upWalkspeed);
                }
                else
                {
                }
            }
            // End of UP Movement



            // Start of DOWN Movement
            function downBeginInput(e:TouchEvent):void
            {
                main.inMotion = true;
                main.goingUp = false;
                main.goingDown = true;
                main.goingLeft = false;
                main.goingRight = false;
                main.down_dpad.addEventListener(TouchEvent.TOUCH_END, downEndInput);
                addEventListener(Event.ENTER_FRAME,sendDownMovement);
            }
            function downEndInput(e:TouchEvent):void
            {
                main.inMotion = false;
                main.goingDown = false;
                main.down_dpad.removeEventListener(TouchEvent.TOUCH_END, downEndInput);
                removeEventListener(Event.ENTER_FRAME,sendDownMovement);
            }
            function sendDownMovement():void
            {
                if (main.inMotion == true && main.goingUp == false && main.goingDown == true && main.goingLeft == false && main.goingRight == false)
                {
                    movePlayer(0, main.downWalkspeed);
                }
                else
                {
                }
            }
            // End of DOWN Movement



            // Start of LEFT Movement
            function leftBeginInput(e:TouchEvent):void
            {
                main.inMotion = true;
                main.goingUp = false;
                main.goingDown = false;
                main.goingLeft = true;
                main.goingRight = false;
                main.left_dpad.addEventListener(TouchEvent.TOUCH_END, leftEndInput);
                addEventListener(Event.ENTER_FRAME,sendLeftMovement);
            }
            function leftEndInput(e:TouchEvent):void
            {
                main.inMotion = false;
                main.goingLeft = false;
                main.left_dpad.removeEventListener(TouchEvent.TOUCH_END, leftEndInput);
                removeEventListener(Event.ENTER_FRAME,sendLeftMovement);
            }
            function sendLeftMovement():void
            {
                if (main.inMotion == true && main.goingUp == false && main.goingDown == false && main.goingLeft == true && main.goingRight == false)
                {
                    movePlayer(main.leftWalkspeed, 0);
                }
                else
                {
                }
            }
            // End of LEFT Movement



            // Start of RIGHT Movement
            function rightBeginInput(e:TouchEvent):void
            {
                main.inMotion = true;
                main.goingUp = false;
                main.goingDown = false;
                main.goingLeft = false;
                main.goingRight = true;
                main.right_dpad.addEventListener(TouchEvent.TOUCH_END, rightEndInput);
                addEventListener(Event.ENTER_FRAME,sendRightMovement);
            }
            function rightEndInput(e:TouchEvent):void
            {
                main.inMotion = false;
                main.goingRight = false;
                main.right_dpad.removeEventListener(TouchEvent.TOUCH_END, rightEndInput);
                removeEventListener(Event.ENTER_FRAME,sendRightMovement);
            }
            function sendRightMovement():void
            {
                if (main.inMotion == true && main.goingUp == false && main.goingDown == false && main.goingLeft == false && main.goingRight == true)
                {
                    movePlayer(main.rightWalkspeed, 0);
                }
                else
                {
                }
            }
            // End of RIGHT Movement


            function movePlayer(movementX:Number, movementY:Number):void
            {
                var originalX:Number = main.playerPosKeeper_mc.x;
                var originalY:Number = main.playerPosKeeper_mc.y;
                main.playerPosKeeper_mc.x +=  movementX;
                if (checkCollision())
                {
                    main.playerPosKeeper_mc.x = originalX;
                }
                main.playerPosKeeper_mc.y +=  movementY;
                if (checkCollision())
                {
                    main.playerPosKeeper_mc.y = originalY;
                }
            }

            function checkCollision():Boolean
            {
                for each (var StageCollisions:MovieClip in main.StageCollisions)
                {
                    if (main.playerPosKeeper_mc.hitTestObject(StageCollisions))
                    {
                        return true;
                        main.inMotion = false;
                        main.goingUp = false;
                        main.goingDown = false;
                        main.goingLeft = false;
                        main.goingRight = false;
                    }
                }
                return false;
            }
        }
    }
}

在开始调试行为之前，您需要了解什么是算法方法。您有 4 段相似的代码，它们在一些小细节上有所不同，使您的整个脚本太长、不可读且难以管理。这是指南：

var isMoving:Boolean;
var Direction:Point = new Point;
var Buttons:Array = [Up, Down, Left, Right];

// Subscribe all buttons for the same handlers and behaviors.
for each (var aButton:InteractiveObject in Buttons)
{
    aButton.addEventListener(MouseEvent.MOUSE_DOWN, onDown);
    aButton.addEventListener(MouseEvent.MOUSE_OUT, onUp);
    aButton.addEventListener(MouseEvent.MOUSE_UP, onUp);
}

function onDown(e:MouseEvent):void
{
    // Figure which button was pressed.
    switch (e.currentTarget)
    {
        case Up:
            Direction.x = 0;
            Direction.y = -1;
            break;

        case Down:
            Direction.x = 0;
            Direction.y = 1;
            break;

        case Left:
            Direction.x = -1;
            Direction.y = 0;
            break;

        case Up:
            Direction.x = 1;
            Direction.y = 0;
            break;
    }

    // Now start moving Hero into the Direction.
    if (!isMoving)
    {
        isMoving = true;
        addEventListener(Event.ENTER_FRAME, onFrame);
    }
}

function onFrame(e:Event):void
{
    Hero.x += Direction.x;
    Hero.y += Direction.y;
}

function onUp(e:MouseEvent):void
{
    // If any of buttons is released or mouse out, stop moving Hero.
    removeEventListener(Event.ENTER_FRAME, onFrame);

    Direction.x = 0;
    Direction.y = 0;

    isMoving = false;
}

正如您所看到的，算法方法的美妙之处在于您需要以不同的方式处理only的事情need为了以不同的方式处理，在示例情况下（与您想要创建的非常相似），它是设置移动方向的块。所有按钮的其余代码都是相同的，这就是整个脚本简短易读、易于理解和管理的原因。