如何訪問精靈數組中的單個精靈？

Question

如何訪問精靈數組中的第一個精靈並將其位置更改爲此？

 sprite.position = CGPointMake(arc4random_uniform(self.frame.size.width), arc4random_uniform(self.frame.size.height)); 

@property (nonatomic, strong) SKSpriteNode *aSprite; 
@property (nonatomic) NSMutableArray *sprites; 

一個精靈一個數組來保存他們

Answer 1

要訪問精靈的數組，你可以做到這一點的第一個對象：

SKSpriteNode *object = [myArray firstObject]; 
object.position = CGPointMake(arc4random_uniform(self.frame.size.width), arc4random_uniform(self.frame.size.height)); 

要訪問的所有對象的數組做這個：

for(SKSpriteNode *object in myArray) { 
    object.position = CGPointMake(arc4random_uniform(self.frame.size.width), arc4random_uniform(self.frame.size.height)); 
}