CODEWITHSUNDEEP
iosanimationios7sprite-kit
Apostolos
Apostolos

Reputation: 409

iOS SpriteKit animation does not appear

I'm loading an animation using textures from a TextureAtlas.

But the animation does not appear on screen.

I appears only when I NSLog the Textures! Looks like a bug.

Does somebody made similar experience?

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;
}

Upvotes: 0

Views: 1605

Answers (5)

Deepak
Deepak

Reputation: 427

Go to you'r Project and follow these steps:- 1> Go to Build Settings, 2> Search for Enable Texture Atlas Generation and select YES

Upvotes: 0

Bobo Shone
Bobo Shone

Reputation: 721

See this post, there is a bug when images have a lot of transparent space using texture atlas.

SKTexture returns wrong size?

Upvotes: 1

Apostolos
Apostolos

Reputation: 409

I found the bug!

I had to preload the textures.

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

Upvotes: 3

Mr. Berna
Mr. Berna

Reputation: 10645

NSLog is very slow compared to most other operations. Just inserting that call adds a significant pause to the main thread of your app. I'm guessing that your texture loading is sending tasks off to the GPU. Without the NSLog call the GPU may not have enough time to complete the tasks. Maybe you can preload the textures.

Upvotes: 0

DogCoffee
DogCoffee

Reputation: 19946

This is how I do mine, and havent had any issues yet.

    NSMutableArray *textures = [NSMutableArray arrayWithCapacity:5];
    for (int i = 1; i < 5; i++) {
        NSString *textureName = [NSString stringWithFormat:@"rocket%d", i];
        SKTexture *texture = [SKTexture textureWithImageNamed:textureName];
        [textures addObject:texture];
    }

    self.rocketAnimation = [SKAction animateWithTextures:textures timePerFrame:0.1];
    // add animation to my sprite
    [self.projectile runAction:[SKAction repeatActionForever:self.rocketAnimation]];
    // add spite to screen etc...
    [self addChild:self.projectile];

Upvotes: 1

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