Sprite Kit 检测接触

Question

我有四个 Sprite：Ball、Objects、Line 和 Stars。 我还定义了类别：

static const uint32_t ballCategory = 0x1 << 0; static const uint32_t objectsCategory = 0x1 << 1; static const uint32_t lineCategory = 0x1 << 2; static const uint32_t starsCategory = 0x1 << 3;

属性：

ball.physicsBody.categoryBitMask = ballCategory;
ball.physicsBody.contactTestBitMask = objectsCategory | starsCsategory;
object.physicsBody.categoryBitMask = objectsCategory;
object.physicsBody.contactTestBitMask = ballCategory;
star.physicsBody.categoryBitMask = starsCategory;
star.physicsBody.contactTestBitMask = ballCategory;
line.physicsBody.categoryBitMask = lineCategory;
line.physicsBody.contactTestBitMask = objectsCategory;

现在在我的didBeginContact 方法中（没关系）：

    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];


}

另一部分（这不起作用）：

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

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

}

我的错在哪里？我想要：当球“接触”明星时，我得到 100 分。

Answer 1

您的代码中有错字：(starsCsategory)

ball.physicsBody.contactTestBitMask = objectsCategory | starsCsategory;