Texture Animator

[rtr_18]

Hi!
I've an array of textures. I need to animate these textures over an image.

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	textureArray.push_back(pManager->getDriver()->getTexture("media/FE/story/scr/ButtonRipple1.png"));
	textureArray.push_back(pManager->getDriver()->getTexture("media/FE/story/scr/ButtonRipple2.png"));
	textureArray.push_back(pManager->getDriver()->getTexture("media/FE/story/scr/ButtonRipple3.png"));

How to do this?

[slavik262]

Change the UV coordinates of the vertices in the mesh every frame. You can also change the UV coordinates in a vertex shader.

[rtr_18]

I've created a Texture animator like this:

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textureAnimator = pManager->getSceneManager()->createTextureAnimator(textureArray,5000,true);

in side the game loop. But nothing happens. Can you post some piece of code?

[slavik262]

That texture animator just swaps the textures on the given interval. Is that what you're trying to do, or are you trying to move the texture across the mesh?

[Bate]

If you put that in your gameloop, then you create a new animator each frame!

Here's an example of an animated billboard.

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array<ITexture*> texarr;

for (int i = 1; i < 10; ++i)
{
  io::path temp = "explosion";
  temp += i;
  temp += ".jpg";
  texarr.push_back(driver->getTexture(temp));
}

ISceneNodeAnimator* tex = smgr->createTextureAnimator(texarr, 50);

scene::IBillboardSceneNode* bill = smgr->addBillboardSceneNode(0, dimension2df(320, 240), vector3df(0,0,0));
bill->setMaterialTexture(0, texarr[0]);
bill->setMaterialFlag(EMF_LIGHTING, 0);
bill->setMaterialType(EMT_TRANSPARENT_ADD_COLOR);

bill->addAnimator(tex);
tex->drop();

[rtr_18]

slavik262 wrote:
Is that what you're trying to do, or are you trying to move the texture across the mesh?

I've to make a blinking image over a blue circle image to indicate that it's the current level. Please see the following link in this forum:

http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=40225

Instead of that I'm trying to use a TextureAnimator. Is it possible or not? I've tried what Bate said also. But nothing(none of my images) is visible.

[serengeor]

have you renamed

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for (int i = 1; i < 10; ++i)
{
  io::path temp = "explosion"; /// Your texture name
  temp += i;
  temp += ".jpg"; /// Your texture file extension
  texarr.push_back(driver->getTexture(temp));
} 

[rtr_18]

I've renamed everything to my resource names. Here is my code in side game loop.

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	while(device->run() && driver)
	{
		if (device->isWindowActive())
		{
		 driver->beginScene(true, true, SColor(0,200,200,200)); 

		 env->drawAll();
		 billBoard->addAnimator(textureAnimator);
		 billBoard->setMaterialTexture(0, textureArray[0]); 
		 billBoard->setMaterialFlag(EMF_LIGHTING, 0); 
		 billBoard->setMaterialType(EMT_TRANSPARENT_ADD_COLOR); 
		 billBoard->addAnimator(textureAnimator); 
		 textureAnimator->drop();
		 driver->endScene();
		}
	}
	device->drop();

I've initialised the texture array out side the game loop in main().

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	irr::core::array<irr::video::ITexture*> textureArray;
	textureArray.push_back(driver->getTexture("ButtonRipple1.png"));
	textureArray.push_back(driver->getTexture("ButtonRipple2.png"));
	textureArray.push_back(driver->getTexture("ButtonRipple3.png"));
	irr::scene::ISceneNodeAnimator* textureAnimator = device->getSceneManager()->createTextureAnimator(textureArray,5000,true);
	irr::scene::IBillboardSceneNode* billBoard =  device->getSceneManager()->addBillboardSceneNode(0,dimension2df(320,240),vector3df(10,10,0));
	context.billBoard = billBoard;
	context.textureAnimator = textureAnimator;

Nothing is visible. What to do?

[slavik262]

This code does not go in your game loop. You are adding a new animator every single frame. Just use

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 billBoard->addAnimator(textureAnimator); 
 billBoard->setMaterialTexture(0, textureArray[0]); 
 billBoard->setMaterialFlag(EMF_LIGHTING, 0); 
 billBoard->setMaterialType(EMT_TRANSPARENT_ADD_COLOR);

outside your game loop.

[Bate]

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	while(device->run())
	{
		if (device->isWindowActive())
		{
		 driver->beginScene(true, true, SColor(0,200,200,200)); 

		 env->drawAll();
		 billBoard->addAnimator(textureAnimator);
		 billBoard->setMaterialTexture(0, textureArray[0]); 
		 billBoard->setMaterialFlag(EMF_LIGHTING, 0); 
		 billBoard->setMaterialType(EMT_TRANSPARENT_ADD_COLOR); 
		 billBoard->addAnimator(textureAnimator); 
		 textureAnimator->drop();
		 driver->endScene();
		}
	}
	device->drop();

You should also think about drawing it!

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while(device->run() && driver)
{
  driver->beginScene(true, true, SColor(0,200,200,200));
    smgr->drawAll();
    env->drawAll();
  driver->endScene(); 
}