雪碧试剂盒-检测接触

Question

我有两个Sprite节点：

-(void)createPlayer {
    SKSpriteNode *player = [SKSpriteNode node];

    player.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:enemy.size];
    player.physicsBody.categoryBitMask = playerCategory;
    player.physicsBody.contactTestBitMask = enemyCategory;

    player.position = CGPointMake(100, 160);
    player.name = @"player";
    player.zPosition = 100;

    [self addChild:player];
}

-(void)createEnemy {
    SKSpriteNode *enemy = [SKSpriteNode node];

    enemy.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:enemy.size];
    enemy.physicsBody.categoryBitMask = enemyCategory;
    enemy.physicsBody.contactTestBitMask = playerCategory;

    enemy.position = CGPointMake(300, 160);
    enemy.name = @"player";
    enemy.zPosition = 100;

    [self addChild:enemy];
}

下面是MyScene.h

static const uint32_t playerCategory =  0x1 << 0;
static const uint32_t enemyCategory =  0x1 << 1;

我如何检测他们是否接触，以便我可以添加一个行动的结果，他们的接触？

Answer 1

你的碰撞检测需要代表的方法。

在MyScene.h中，您的代码应该如下所示：

@interface MyScene : SKScene <SKPhysicsContactDelegate>

在您的MyScene.m中，在initWithSize中添加以下内容

self.physicsWorld.contactDelegate = self;

现在您需要实现委托方法didBeginContact。

- (void)didBeginContact:(SKPhysicsContact *)contact {
    uint32_t collision = (contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask);

    if (collision == (playerCategory | enemyCategory)) {
        // Do your stuff
    }
}