iOS SpriteKit 动画不出现

Question

我正在使用 TextureAtlas 中的纹理加载动画。

但是动画没有出现在屏幕上。

只有当我对纹理进行 NSLog 时，我才会出现!看起来像一个错误。

有没有人有过类似的经历？

SKTextureAtlas *atlas = [SKTextureAtlas atlasWithRetinaCorrection:spriteSheetName_];
if ([atlas.textureNames count] == 0) return;
NSArray *r = [self getSprites:WEAPON_FIREANIMATION ofDict:atlas.textureNames];
if ([r count] == 0)return;


SKSpriteNode *firstSprite = (SKSpriteNode*)[self childNodeWithName:tFIRSTSPRITE];
[firstSprite removeActionForKey:aFIRE_ANIM];

NSMutableArray *walkAnimFrames = [NSMutableArray array];
int k =0;
if (self.weaponAnimDuration == 0)
{
    k = (self.weaponShootInterval / 0.1f)/[r count];
} else
{
    k = (self.weaponAnimDuration / 0.1f)/[r count];
}
for (int i = 0; i<k; i++)
{
    for (NSString *sname in r)
    {
        [walkAnimFrames addObject:[SKTexture textureWithImageNamed:sname]];
    }

}
NSLog(@"%@",walkAnimFrames);

SKAction *weaponAnim = [SKAction animateWithTextures:walkAnimFrames timePerFrame:0.1f];
[firstSprite runAction:weaponAnim withKey:aFIRE_ANIM];

---

#import "SKTextureAtlas+MySKTextureAtlas.h"
@implementation SKTextureAtlas (MySKTextureAtlas)

+(SKTextureAtlas*)atlasWithRetinaCorrection:(NSString*)name
{
    if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] == YES && [[UIScreen mainScreen] scale] == 2.00)
    {
        name = [NSString stringWithFormat:@"%@@2x",name];
    }

    NSString *path = [[NSBundle mainBundle] pathForResource:name ofType:@"atlasc"];
    if (path == Nil) return Nil;

    return [SKTextureAtlas atlasNamed:name];
}

---

@implementation NSArray (Tools)


-(NSArray*)animationTextureFrames
{
    NSMutableArray *rr = [NSMutableArray new];
    for (NSString *name in self)
    {
        SKTexture *tex = [SKTexture textureWithImageNamed:name];
        [rr addObject:tex];
    }
    return rr;
}

Answer 1

我发现了错误!

我必须预加载纹理。

 [SKTexture preloadTextures:explosionTextures withCompletionHandler:^(void){}];