ios - 背景颜色闪光 Sprite 套件

Question

我正在尝试将 flashBackground 的背景设为白色。我如何使用 sprite 工具包来做到这一点。我在下面创建了 SKSpriteNode，我想从 clearcolor 闪烁到 whitecolor 再到 clearcolor。

flashBackground = [SKSpriteNode spriteNodeWithColor:[SKColor clearColor] size:
                       CGSizeMake(self.size.width, self.size.height)];

[self addChild:flashBackground];

Answer 1

SKAction *wait0 = [SKAction waitForDuration:1.0]; // 1 sec delay

SKAction *block0 = [SKAction runBlock:^{
    flashBackground.color = [SKColor whiteColor];
}];

SKAction *block1 = [SKAction runBlock:^{
    flashBackground.color = [SKColor clearColor];
}];

[flashBackground runAction:[SKAction repeatActionForever:[SKAction sequence:@[wait0, block0, wait0, block1]]]];

或仅将最后一行更改为:

[flashBackground runAction:[SKAction sequence:@[wait0, block0, wait0, block1]]];