多个精灵的Sprite Kit NSArray？

Question

我有 6 个精灵图像我正在尝试添加到我的场景中，添加它们中的每一个似乎都会减慢一切。我想我需要创建一个 NSArray 以帮助提高速度。这是我创建的数组，但它只添加了第一个图像，我怎样才能让它添加所有 6 个？提前谢谢！

我的数组

NSArray *myArray = [NSArray arrayWithObjects:@"image1",@"image2",@"image3",@"image4",@"image5",@"image6", nil];

NSInteger count = [myArray count];
for (int i = 0; i < count; i++) {
    if (i > 5) {
        break;
    }
    result = [myArray objectAtIndex:i];
}

//Setting SKSpriteNodes from array.
dice = [SKSpriteNode spriteNodeWithImageNamed:[myArray objectAtIndex:result.intValue]];

Answer 1

在你的场景中定义一个属性：

@interface MyScene
@property (nonatomic) NSMutableArray *items;
@end

然后创建一个方法来填充该数组：

- (void)fillItems {

for (int i=0; i<10; i++) {
    SKSpriteNode *d1 = [SKSpriteNode spriteNodeWithImageNamed:@"Sprite1"];

    d1.position = CGPointMake(self.frame.size.width/4 + arc4random() % ((int)self.frame.size.width/2),
                              self.frame.size.height/2 + arc4random() % ((int)self.frame.size.height/2));

    d1.color = [self randomColor];
    d1.colorBlendFactor = 1.0;
    d1.xScale = 0.25;
    d1.yScale = 0.25;
    d1.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:d1.frame.size];

    //Adding SpriteKit physicsBody for collision detection
    d1.physicsBody.categoryBitMask = diceCategory;
    d1.physicsBody.dynamic = YES;
    d1.physicsBody.contactTestBitMask = frameCategory;
    d1.physicsBody.collisionBitMask = diceCategory | frameCategory;
    d1.physicsBody.usesPreciseCollisionDetection = YES;
    d1.name = @"Sprite1";
    [self.items addObject:d1];
    [self addChild:d1];
}