Sprite Kit 创建动画对象答案

【问题标题】：Sprite Kit create animated objectSprite Kit 创建动画对象
【发布时间】：2014-02-13 19:03:16
【问题描述】：

我有以下代码来创建动画纹理：

-(void) setUpActions {
    SKTextureAtlas * atlas = [SKTextureAtlas atlasNamed:@"player"];

    // Running player animation
    SKTexture * runTexture1 = [atlas textureNamed:@"player1.png"];
    SKTexture * runTexture2 = [atlas textureNamed:@"player2.png"];
    SKTexture * runTexture3 = [atlas textureNamed:@"player3.png"];
    SKTexture * runTexture4 = [atlas textureNamed:@"player4.png"];
    SKTexture * runTexture5 = [atlas textureNamed:@"player5.png"];
    SKTexture * runTexture6 = [atlas textureNamed:@"player6.png"];
    SKTexture * runTexture7 = [atlas textureNamed:@"player7.png"];
    SKTexture * runTexture8 = [atlas textureNamed:@"player8.png"];

    NSArray * runTexture = @[runTexture1, runTexture2, runTexture3, runTexture4, runTexture5, runTexture6, runTexture7, runTexture8];

    runAnimation = [SKAction animateWithTextures:runTexture timePerFrame:0.06 resize:YES restore:NO];

    SKSpriteNode * playerNode = (SKSpriteNode *)[self childNodeWithName:@"player"];
    [playerNode runAction:[SKAction repeatActionForever:runAnimation]];
}

这会创建精灵节点并以另一种方法添加到场景中：

-(SKSpriteNode *)createPlayer {
    SKSpriteNode *player = [SKSpriteNode spriteNodeWithImageNamed:@"player"];
    player.position = CGPointMake(100, 160);
    player.name = @"player";
    player.zPosition = 100;

    return player;
}

这样做，我不得不创建一个具有静态图像的对象并用动画纹理覆盖它。如何创建一个没有默认静态图像的动画对象？

【问题讨论】：

标签： ios objective-c sprite-kit

【解决方案1】：

动画动作只能在实际实例化的 SKSpriteNode 对象上执行，但是，您可以只创建一个“空白”节点，然后在其上运行动画动作：

SKSpriteNode *player = [SKSpriteNode node]; // instead of the static player sprite

或者，如果您希望空白节点具有特定的大小，以便它在动画之前响应特定区域中的触摸/碰撞，例如，尝试一个清晰的矩形：

SKSpriteNode *player = [SKSpriteNode spriteNodeWithColor:[SKColor clearColor] size:(CGSizeHere)];

或者也许您想使用动画的第一帧作为精灵的纹理：

SKTexture *temp = runTexture[0];
SKSpriteNode *player = [SKSpriteNode spriteNodeWithTexture:temp];

【讨论】：

效果很好！非常感谢！