1

Apple 的文档在解释如何有效实现此类方法时含糊其辞 

+ (SKPhysicsBody *)bodyWithBodies:(NSArray *)bodies; //the error that I'm getting is 2014-04-23 23:25:21.518 Space Monkey[3398:60b] -[SKSpriteNode _shapes]: unrecognized selector sent to instance 0x15d79c50

2014-04-23 23:25:21.520 Space Monkey[3398:60b] * 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[SKSpriteNode _shapes]：无法识别的选择器发送到实例 0x15d79c50”*第一次抛出调用堆栈： （0x2d92ef03 0x380c3ce7 0x2d932837 0x2d93112f ... 它抛出异常，我几乎到处都没有运气进行研究。关于同一问题还有另一个问题在这里但是这些建议似乎根本不起作用。我已经提供代码是为了让某人了解并希望指导我正确...这是代码

-(NSMutableArray *)platformBars
 {
   NSMutableArray *array =[[NSMutableArray alloc]init];
   //_spriteNode declared in the interface as an instance variable
   _spriteNode=[SKSpriteNode node];
   for (int i =0; i<5; i++)
      {
        _spriteNode= [SKSpriteNode spriteNodeWithImageNamed:@"Water Block"];
        _spriteNode.physicsBody.mass = 10.0f;
        _spriteNode.physicsBody.density = _spriteNode.size.height;
        _spriteNode.position = CGPointMake(x , _spriteNode.position.y);
        x=x+40;
        [array addObject:_spriteNode];
      }
      return array;
  }

-(PlatformNode *)createPlatformsAtPosition:(CGPoint)position
 {
   NSArray *arrays = [self platformBars];
   PlatformNode *node =[PlatformNode node];
   node.physicsBody = [SKPhysicsBody bodyWithBodies:arrays];
   for (SKSpriteNode *sknode in arrays)
       {
         [node addChild:sknode];
       }
   node.position=position;
   node.name    =@"platform";
   node.physicsBody.affectedByGravity  = NO;
   NSLog(@"bodyofSize %f",[node calculateAccumulatedFrame].size.width);
   return node;
  }

  -(PlatformNode *)createPlatformsAtPosition:(CGPoint)position is called in the  
  -(void)didMoveToView:(SKView *)view body of the function.

我希望我包含了足够的细节和我的代码片段，所以希望有人会帮助我和其他人也来。先感谢您。

4

1 回答 1

1

应该

NSArray *arrays = [[self platformBars] copy];

代替

NSArray *arrays = [self platformBars];

因为[self platformBars]是可变数组并且arrays是不可变的。
编辑
而且，数组中的顺便说一句是SKSpriteNodes，而不是物理体。所以

node.physicsBody = [SKPhysicsBody bodyWithBodies:arrays];

应该

NSMutableArray *mArray=[NSMutableArray new];
for (SKSpriteNode *anySpriteNode in arrays){
[mArray addObject:anySpriteNode.physicsBody];
}
node.physicsBody = [SKPhysicsBody bodyWithBodies:mArray.copy];
于 2014-04-24T09:09:16.420 回答