问题
I'm using texture atlases in my Sprite Kit game. I'm creating SKTextureAtlas object and store it's textures in array for each animation. So when I need some animation on my hero I call animateWithTextures sending it the corresponding array. There are some lags when I start animations. Is there some way to start animation smoothly?
回答1:
I am sure there are few ways to get around this. What you need to do is to preload an atlases before your gameplay actually start. Just show a loading screen at the beginning of the game and preload your atlases.
You may try with + preloadTextureAtlases:withCompletionHandler:
[SKTextureAtlas preloadTextureAtlases:textureAtlasesArray withCompletionHandler:^{ /*Game Start*/}];
Another way to implement resource loading before everything else (and keep everything in memory) is described here in Adventure game example
For more details about loading assets asynchronously take a peek into code which can be downloaded from the link above.
回答2:
had the same problem and I solved it in my game by not using atlases. So try this example:
-(void)makePlayerAnimation:(SKSpriteNode *)player
{
SKTexture *texture1 = [SKTexture textureWithImageNamed:@"texture1.png"];
SKTexture *texture2 = [SKTexture textureWithImageNamed:@"texture2.png"];
SKTexture *texture3 = [SKTexture textureWithImageNamed:@"texture3.png"];
SKAction *animationTextures = [SKAction animateWithTextures:@[texture1, texture2, texture3] timePerFrame:0.1];
[player runAction:animationTextures];
}
When you wish to activate animation do this:
[self makePlayerAnimation:myNode];
or
[self makePlayerAnimation:self.myNode];
Just depends how you declared it. If you need to run animation forever, you can just add line at the end of previous method:
SKAction *repeat = [SKAction repeatActionForever: animationTextures];
Hope this helps.
来源：https://stackoverflow.com/questions/28041605/sprite-kit-animatewithtextures-lags