For some odd reason textures from my texture atlas are not loading. I have no idea why.
Below is how I typically declare/code a texture
-(SKSpriteNode *)background {
SKSpriteNode *background;
NSArray *backgroundIpad;
background = [SKSpriteNode spriteNodeWithImageNamed:#"dodgR - main background"];
background.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame));
background.size = CGSizeMake(1136, 640);
NSArray *backgroundIphone = #[[SKTexture textureWithImageNamed:#"dodgR - animation 1.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 2.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 3.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 4.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 5.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 6.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 7.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 8.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 9.jpg"],
[SKTexture textureWithImageNamed:#"dodgR - animation 10.jpg"]];
SKAction *backgroundIphoneAnimation = [SKAction animateWithTextures:backgroundIphone timePerFrame:0.05];
SKAction *backgroundIphoneRepeat = [SKAction repeatActionForever:backgroundIphoneAnimation];
[background runAction:backgroundIphoneRepeat];
background.name = #"background";
return background;
}
The name of my texture atlas is sprites.atlas
Any help will be much appreciated, thanks
Your code above only works when using images not in a texture atlas because it doesn't actually make use of a texture atlas.
Images can't be pulled out of an Atlas (that i know of) without using SKTextureAtlas. So you can't grab those images directly.
SWIFT:
let atlas = SKTextureAtlas(named: "BackgroundImages") // atlas name
var backgroundFrames = [SKTexture]()
let imageCount = atlas.textureNames.count
for var i=1; i<= imageCount/2; i++ {
let textureName = "dodgR - animation \(i)"
backgroundFrames.append(atlas.textureNamed(textureName))
}
OBJECTIVE-C (not tested)
SKTextureAtlas *atlas = [SKTextureAtlas named:#"BackgroundImages"]; // atlas name
NSMutableArray *backgroundFrames = [NSMutableArray new];
int imageCount = atlas.textureNames.count;
for (int i = 1; i <= imageCount/2; i++) {
NSString *textureName = #"dodgR - animation \(i)";
[bacgroundFrames addObject:[atlas textureNamed:textureName]];
}
BONUS: Xcode 7 now allows you to create your sprite atlases right inside the assets folder.
Related
I have the animation like below.
sit animation:
SKTexture *sit1 = [SKTexture textureWithImageNamed:#"sit_1_blur.png"];
SKTexture *sit2 = [SKTexture textureWithImageNamed:#"sit_2_blur.png"];
SKTexture *sit3 = [SKTexture textureWithImageNamed:#"sit_3_blur.png"];
SKTexture *sit4 = [SKTexture textureWithImageNamed:#"sit_4_blur.png"];
SKTexture *sit5 = [SKTexture textureWithImageNamed:#"sit_5_blur.png"];
NSArray *sitPng = #[sit1,sit2,sit3];
NSArray *drinkPng = #[sit3,sit4,sit5];
sitAnimation = [SKAction animateWithTextures:sitPng timePerFrame:0.2];
drinkAnimation = [SKAction animateWithTextures:drinkPng timePerFrame:1];
-(void) takeSit{
[self runAction:sitAnimation completion:^{
[self startDrink];
}];
}
How can I change value every second during startDrink animation? Like so:
someValue +=0.2;
You need to have this inside your startDrink Animation (I am assuming startDrink is another action defined somewhere),
+ (SKAction *)customActionWithDuration:(NSTimeInterval)seconds actionBlock:(void (^)(SKNode *node, CGFloat elapsedTime))block;
measure the the time passed and update someValue +=0.2; accordingly.
Hope this helps.
I am trying to code a game. I got an object, that can jump and slide.
I want to hold the animation of 'run' while jumping, but while sliding, I want to change the image. My problem: the image won't show off , if I just change the image to 'slide7'.
Nothing happens.
The slide animation should appear only for about 4 seconds, than go again into the run animation. Any suggestions?
My Code :
-(void)Mensch{
SKTexture * MenschTexture1 = [SKTexture textureWithImageNamed:#"Mensch1"];
MenschTexture1.filteringMode = SKTextureFilteringNearest;
SKTexture * MenschTexture2 = [SKTexture textureWithImageNamed:#"Mensch2"];
MenschTexture2.filteringMode = SKTextureFilteringNearest;
SKAction * Run = [SKAction repeatActionForever:[SKAction animateWithTextures:#[MenschTexture1, MenschTexture2] timePerFrame:0.4]];
Mensch = [SKSpriteNode spriteNodeWithTexture:MenschTexture1];
Mensch.size = CGSizeMake(45, 45);
Mensch.position = CGPointMake(self.frame.size.width / 5, Boden.position.y + 73);
Mensch.zPosition = 2;
Mensch.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:Mensch.size];
Mensch.physicsBody.dynamic = YES;
Mensch.physicsBody.allowsRotation = NO;
Mensch.physicsBody.usesPreciseCollisionDetection = YES;
Mensch.physicsBody.restitution = 0;
Mensch.physicsBody.velocity = CGVectorMake(0, 0);
[Mensch runAction:Run];
[self addChild:Mensch];
}
- (void)didMoveToView:(SKView *)view
{
UISwipeGestureRecognizer *recognizerDown = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:#selector(handleSwipeDown:)];
recognizerDown.direction = UISwipeGestureRecognizerDirectionDown;
[[self view] addGestureRecognizer:recognizerDown];
}
-(void)handleSwipeDown:(UISwipeGestureRecognizer *)sender
{
[Mensch removeAllActions];
Mensch = [SKSpriteNode spriteNodeWithImageNamed:#"slide7.png"];
NSLog(#"Slide");
}
You are replacing the Mensch object. More specifically, you are replacing the pointer you have to the object, but that doesn't stop it from being displayed in the scene.
You can either:
Replace the SKTexture inside the sprite, which should be displayed immediately. This means Mensch.texture = [SKTexture textureWithImageNamed:#"slide7.png"];
Replace the Sprite. This entails removing the current sprite ([sprite removeFromParent]) and adding the new one ([self addChild:newSprite]).
I think you want the first one, since you don't have to recreate the Mensch object.
Might I add that you are performing a lot of Mensch-specific logic in this object? It would be better (from an Object Oriented standpoint) to move this creation code to an SKSpriteNode subclass Mensch.
#interface Mensch : SKSpriteNode
- (void) displayRunAnimation;
- (void) displaySlideAnimation;
#end
#implementation : Mensch
- (instancetype) init {
self = [super init];
if (self) {
// your initialization code here, including physics body setup
[self displayRunAnimation];
}
return self;
}
- (void) displayRunAnimation {
SKTexture * MenschTexture1 = [SKTexture textureWithImageNamed:#"Mensch1"];
MenschTexture1.filteringMode = SKTextureFilteringNearest;
SKTexture * MenschTexture2 = [SKTexture textureWithImageNamed:#"Mensch2"];
MenschTexture2.filteringMode = SKTextureFilteringNearest;
SKAction * Run = [SKAction repeatActionForever:[SKAction animateWithTextures:#[MenschTexture1, MenschTexture2] timePerFrame:0.4]];
// if you plan to call this often, you want to cache this SKAction, since creating it over and over is a waste of resources
[self runAction:Run];
}
- (void) displaySlideAnimation {
[self removeAllActions];
self.texture = [SKTexture textureWithImageNamed:#"slide7.png"];
NSLog(#"Slide");
// re-start the runAnimation after a time interval
[self performSelector:#selector(displayRunAnimation) withObject:nil afterDelay:4.0];
}
I am having an issue with the sprite animation in my game.
In the current code posted below, the sprite will show on the screen but does not do the walking animation; it is only a static frame of one of the images in the walk cycle.
The init function:
-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize: size]) {
self.backgroundColor = [SKColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0];
// Create the game nodes
// Background
_backgroundNode = [self createBackgroundNode];
[self addChild: _backgroundNode];
// Foreground
_foregroundNode = [SKNode node];
[self addChild: _foregroundNode];
// Add the Player
_thePlayer = [self createPlayer];
[_foregroundNode addChild:_thePlayer];
[self walkingQueen];
}
return self;
}
Function creating the player / filling in the animation array:
-(SKSpriteNode *)createPlayer
{
SKSpriteNode *playerNode = [SKSpriteNode node];
//SKSpriteNode *_player = [SKSpriteNode node];
NSMutableArray *walkFrames = [NSMutableArray array];
SKTextureAtlas *queenAnimatedAtlas = [SKTextureAtlas atlasNamed: #"QueenSprites"];
SKTexture *walk1 = [queenAnimatedAtlas textureNamed:#"queen7"];
SKTexture *walk2 = [queenAnimatedAtlas textureNamed:#"queen8"];
SKTexture *walk3 = [queenAnimatedAtlas textureNamed:#"queen9"];
walkFrames[0] = walk1;
walkFrames[1] = walk2;
walkFrames[2] = walk3;
_queenWalkingFrames = walkFrames;
/*
int numImages = 9;
for (int i = 7; i <= numImages; i++) {
NSString *textureName = [NSString stringWithFormat:#"queen%d", i];
SKTexture *temp = [queenAnimatedAtlas textureNamed: textureName];
[walkFrames addObject: temp];
}
*/
//_queenWalkingFrames = walkFrames;
SKTexture *temp = _queenWalkingFrames[0];
SKSpriteNode *_player = [SKSpriteNode spriteNodeWithTexture:temp];
_player.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame));
//[self addChild:_player];
//[self walkingQueen];
[playerNode addChild:_player];
[self walkingQueen];
return playerNode;
}
And the function for starting the walk animation:
-(void)walkingQueen
{
for (int i = 0; i < _queenWalkingFrames.count; i++) {
if (_queenWalkingFrames[i] == NULL) {
NSLog(#"ERROR!");
}
}
[_thePlayer runAction:[SKAction repeatActionForever:
[SKAction animateWithTextures:_queenWalkingFrames
timePerFrame:0.1f
resize:NO
restore:YES]] withKey:#"walkingInPlaceQueen"];
//return;
}
I played around with the code a bit and the animation DOES work IF I ignore the concept of layers (background / foreground layers) and stick the creation of the player into the init function (basically taking what's inside the createPlayer() and sticking it inside initWithSize()).
I do need to have the layers for my game and everything seems like it should work; had no idea that moving a few lines of code into its own function block would create such an issue. The check inside the walkingQueen() function did not return any errors so I assume my array has been filled with the sprite images.
_thePlayer = [self createPlayer];
This means _thePlayer is nil until after the createPlayer method returns. Thus in the walkingQueen method _thePlayer is nil and the actions don't run.
Replace this:
SKSpriteNode *playerNode = [SKSpriteNode node];
with
_thePlayer = [SKSpriteNode node];
and use _thePlayer instead of playerNode. You can also skip returning and assigning it, it's an ivar after all.
Re-wrote the createPlayer() function. Correct implementation is much simpler and as follows:
-(SKSpriteNode *)createPlayer
{
NSMutableArray *walkFrames = [NSMutableArray array];
SKTextureAtlas *queenWalkingAtlas = [SKTextureAtlas atlasNamed:#"QueenSprites"];
SKTexture *walk1 = [queenWalkingAtlas textureNamed:#"queen7"];
SKTexture *walk2 = [queenWalkingAtlas textureNamed:#"queen8"];
SKTexture *walk3 = [queenWalkingAtlas textureNamed:#"queen9"];
walkFrames[0] = walk1;
walkFrames[1] = walk2;
walkFrames[2] = walk3;
_queenWalkingFrames = walkFrames;
SKTexture *temp = _queenWalkingFrames[0];
_thePlayer = [SKSpriteNode spriteNodeWithTexture:temp];
_thePlayer.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame));
return _thePlayer;
}
Basically doing as the post above suggested, get rid of the ivars, use the function ONLY to fill the array with the appropriate images. Then, in the init function, call createPlayer(), add it to the foreground layer, and then call walkingQueen().
I had a general SKScene where I created a SKSpriteNode, added it via
[self addChild:_charecter];
And all was well..
I tried making a new class for the SKSpriteNode so that I could add some custom methods to it. Here is it's init method:
- (instancetype)init
{
if (self = [super init]) {
SKTexture *run1 = [SKTexture textureWithImageNamed:#"run1"];
SKTexture *run2 = [SKTexture textureWithImageNamed:#"run2"];
SKTexture *run3 = [SKTexture textureWithImageNamed:#"run3"];
_charecterSprites = [NSArray arrayWithObjects:run1, run2, run3, nil];
self.texture = run1;
self.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:1.0]; //CHANGE THIS LATER
}
return self;
}
The problem is that now when I add the _charecter to the view, it doesn't appear. I'm adding him in the SKScene as follows:
_charecter = [[RUNPlayer alloc] init];
_charecter.position = CGPointMake(CGRectGetMidX(self.frame), CHARECTER_Y_AXIS);
self.physicsWorld.gravity = CGVectorMake(0, -10.0/150.0);
[self addChild:_charecter];
Any idea why my SKSpriteNode isn't visible?
Thanks
Trying using one of the SKSpriteNode initializers instead of init
- (instancetype)initWithImageNamed:(NSString *)name
{
if (self = [super initWithImageNamed:name]) {
SKTexture *run1 = [SKTexture textureWithImageNamed:#"run1"];
SKTexture *run2 = [SKTexture textureWithImageNamed:#"run2"];
SKTexture *run3 = [SKTexture textureWithImageNamed:#"run3"];
_charecterSprites = [NSArray arrayWithObjects:run1, run2, run3, nil];
self.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:1.0]; //CHANGE THIS LATER
}
return self;
}
From what I understand, when you use initWithImageNamed:, the sprite node's size is set to the texture's size. Your sprite could of been on screen but had a size of (0,0). Let us know if this works!
On a side note, check out Ray's tutorial on texture atlases to replace _characterSprites http://www.raywenderlich.com/45152/sprite-kit-tutorial-animations-and-texture-atlases
I am trying to scale an SKSpriteNode object without smoothing/anti-aliasing (I'm using pixel-art so it looks better pixelated).
Is there a property I need to set to do this? This is the code I am using to render the sprite:
SKTextureAtlas *atlas = [SKTextureAtlas atlasNamed:#"objects"];
SKTexture *f1 = [atlas textureNamed:#"hero_1.png"];
SKSpriteNode *hero = [SKSpriteNode spriteNodeWithTexture:f1];
[self addChild: hero];
hero.scale = 6.0f;
The image is scaled correctly but blurry/smoothed out. This is hero_1.png .
Try,
SKTexture *texture = [SKTexture textureWithImageNamed:#"Fak4o"];
texture.filteringMode = SKTextureFilteringNearest;
SKSpriteNode *newHero = [SKSpriteNode spriteNodeWithTexture:texture];
newHero.position = CGPointMake(200, 200);
[newHero setScale:50];
[self addChild:newHero];
SKTextureFilteringNearest
Each pixel is drawn using the nearest point in the texture. This mode
is faster, but the results are often pixelated.
Swift:
sprite.texture!.filteringMode = .Nearest
Just a note, if you create a SKSpriteNode instead of SKTexture, you can set the SKTextureFilteringNearest like in the following example:
SKSpriteNode *asteroid = [SKSpriteNode spriteNodeWithImageNamed:#"o1"];
asteroid.size = CGSizeMake(36, 24);
asteroid.position = CGPointMake(startX, startY);
asteroid.name = #"obstacle";
// >>>
asteroid.texture.filteringMode = SKTextureFilteringNearest;
// <<<
[self addChild:asteroid];
try this:
hero.xscale = 6.0f;
hero.yscale = 6.0f;