Ios7 Sprite套件检测接触

我有四个精灵：球、物体、线和星星。 我还定义了以下类别：

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静态constuint32\u t ballcegory=0x1您的代码中有一个输入错误：starsCsategory

ball.physicsBody.contactTestBitMask = objectsCategory | starsCsategory;

    if( ( contact.bodyA.categoryBitMask & lineCategory ) == lineCategory || ( contact.bodyB.categoryBitMask & lineCategory ) == lineCategory ) {

    score++;
    scoreLabelNode.text = [NSString stringWithFormat:@"%ld", (long)score];

}
    if( ( contact.bodyA.categoryBitMask & ballCategory ) == ballCategory || ( contact.bodyB.categoryBitMask & ballCategory ) == ballCategory ) {

    [self gameOver];


}

if( ( contact.bodyA.categoryBitMask & starsCategory ) == starsCategory || ( contact.bodyB.categoryBitMask & starsCategory ) == starsCategory ) {

    score = score + 100;
    scoreLabelNode.text = [NSString stringWithFormat:@"%ld", (long)score];

}

ball.physicsBody.contactTestBitMask = objectsCategory | starsCsategory;