Change texture and add action to the sprite?

cocos2d-x C++
#1

Take this example:

Add a sprite to a layer having some texture. (created using Sprite::create(something.png))

Now, how to change the texture of a sprite but to put a nice fading in effect with it
Note: fading in effect is easy if I am creating a sprite but how to do it for the texture that is now added.

To explain in other words:
I have a sprite. Now, I want to change it texture while applying the fadingIn effect at the same time…
Is it possible? I doubt actually!!

Thanks

#2 
SpriteFrameCache::getInstance()->addSpriteFramesWithFile("texture.plist");

auto textureA = SpriteFrameCache::getInstance()->getSpriteFrameByName("textureA.png");
auto textureB = SpriteFrameCache::getInstance()->getSpriteFrameByName("textureB.png");

auto sp = Sprite::create();
sp->setSpriteFrame(textureA);
sp->setSpriteFrame(textureB);

this will may solve your case.

#3

Hi…
this is for just changing the texture… Thats fine… I am asking while you do

after the statement

I want some fadingIn action… Is it possible?

#4

did you mean to change texture with cross fading effect, one to another?

#5

@hzlov
what is cross fading effect… Is it same as fading effect… I think so!!
I think yes to what you are saying :smile:

I suppose it is possible on through 2 different sprites!! Isn’t it?

#6

I meant that cross fading is A is fading in while B is fading out with overlap

Yes! :slight_smile:

#7

No No, when I said

I meant that I supposed that it is possible only through this way…
Actually, its type its “only” instead of “on” in that sentence :slight_smile: sorry…

Also, ya I want this but on the sprite…

Thanks :smile:

#8

You would always need two sprite nodes, as a sprite can only have one texture at a time.

It can be achieved with a node having two child sprite nodes.

#9

No… even if I am removing the first texture completely without any effect and then putting the the second texture with an effect can also work for me…

#10

Then just use the setSpriteFrame method on the sprite node and add the fading effect. But this will not cross-fade your texture.

#11

Ohk, I see setSpriteFrame… I’ll try this…
but what how to set thsi fading effect? I mean setSpriteFrame will just change the texture and there is not argument for any effect in that…
Are you talking about…
auto spriteK = Sprite::create(“1.png”);
spriteK-> setPosition(Vec2(100,100));
this->addChild(spriteK);
//Now…
auto myAction = FadeIn(0.5);
spriteK-> setSpriteFrame(“2.png”);
spriteK->runAction(myAction);

So, is this the way you’re suggesting?
Also, what is the difference between setting a texture and setting a frame :smile:

Thanks

#12

Exactly.

Yes.

Setting a texture sets the total pixel information stored in a texture.

Setting a frame only sets the information used in the rectangle defined in the sprite, but still storing the complete texture information… The rectangle/frame is able to set/render a small part of the texture.