检查另一种方法在使用cocos2d的调度时是否正在工作:方法

Question

我试图运行一个包含3个参数的if语句，其中一个参数是方法是否正在运行。让我在下面展示我的代码，并试图澄清。

-(void) btnRightTapped: (id) sender{

    CCLOG(@"Left button Tapped");


    CGSize viewSize = [CCDirector sharedDirector].viewSize;

    if (_claw.position.x >= viewSize.width || _claw.position.x >= 1 && // HERE I WANT TO ADD THE ARGUMENT) {

        // Do stuff

        [self schedule:@selector(btnRightTapped:) interval:0.1];


    }


    else [self unschedule:@selector(btnRightTapped:)];

}

我要添加的参数是测试btnRightTapped方法当前是否正在运行，如下所示：

-(void) btnLeftTapped: (id) sender{

    CCLOG(@"Right button Tapped");



    CGSize viewSize = [CCDirector sharedDirector].viewSize;

    if (_claw.position.x < viewSize.width && // AND HERE) {


        // Do stuff


        [self schedule:@selector(btnLeftTapped:) interval:0.1];

    }


    else [self unschedule:@selector(btnLeftTapped:)];

}

我想要完成的是当按下按钮时移动我的爪精灵。目前，它只适用于将爪移到一边，当您试图将其移回时，if语句再次变为真，两个按钮的时间表都会打开和关闭，这使得精灵像疯了一样来回跳。

因此，我需要使用当前参数运行if语句，加上另一个按钮/方法没有按下/正在运行的参数。我该怎么做？

简而言之，这就是我想要的：

if (_claw.position.x < viewSize.width && btnRightTapped.is.active == NO) 
{    
    do this and that

Answer 1

当另一个方法被调度时，您能试着取消另一个方法的调度吗？就像这样：

-(void) btnRightTapped: (id) sender{

    CCLOG(@"Left button Tapped");

    CGSize viewSize = [CCDirector sharedDirector].viewSize;

    if (_claw.position.x >= viewSize.width || _claw.position.x >= 1) {

        CCLOG(@"Left button Tapped inside if statement");

        float clawSpeed = - viewSize.width / 10.0;
        float distanceToMoveClaw = clawSpeed;

        float newXClaw = _claw.position.x + distanceToMoveClaw;
        float newYClaw = _claw.position.y;

        _claw.position = ccp(newXClaw, newYClaw);

        [self schedule:@selector(btnRightTapped:) interval:0.1];
        [self unschedule:@selector(btnLeftTapped:)]; // New line here

    }


    else [self unschedule:@selector(btnRightTapped:)];
}

-(void) btnLeftTapped: (id) sender{

    CCLOG(@"Right button Tapped");

    CGSize viewSize = [CCDirector sharedDirector].viewSize;

    if (_claw.position.x < viewSize.width) {

        float clawSpeed = viewSize.width / 10.0;
        float distanceToMoveClaw = clawSpeed;

        float newXClaw = _claw.position.x + distanceToMoveClaw;
        float newYClaw = _claw.position.y;

        _claw.position = ccp(newXClaw, newYClaw);


        [self schedule:@selector(btnLeftTapped:) interval:0.1];
        [self unschedule:@selector(btnRightTapped:)]; // New line here
    }

    else [self unschedule:@selector(btnLeftTapped:)];
}

Answer 2

使用ivar中的布尔标志来指示您已“计划”运行的工作。当您执行“取消计划”时，将其设置为NO。