triggering texture animation

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

Is it possible? What i want to do is to trigger specifical shader of animated texture (when player hits the trigger, textures beginning to scroll for instance). Is Doom capapble of such things? If so, how should script look? Let's say i got texture, with two material entries, one normal static A, and one animated B. How shopuld script look and what i should do to make trigger them to animate?

Ivan_the_B · **Joined:** Fri Apr 22, 2005 11:55 pm **Posts:** 1180

You probably have to create a conditional stage in your material that is executed only when you set a certain shaderparm on your entity.

Code:

yourmaterial
{
    //material stuff here...

   { //do this only if shaderparm7 is 1
     if ( parm7 == 1 ) 
     scroll time * .8 , time * .3
   }
}

Or something close to that, don't know exactly

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

how does it works exactly? i tried to find something in mars city level (because chinese guy's face slowly turning into zombie after opening the gate is clearly this effect i want to learn), but it's such a mess that i can't find anything. Any help? OR at least hint, where i should look for this kind of things to check everything myself? Please, i would be very grateful

Ivan_the_B · **Joined:** Fri Apr 22, 2005 11:55 pm **Posts:** 1180

Your material should look like

Code:

textures/atest
{
   qer_editorimage   textures/base_wall/boxpanel.tga

        {
      if ( parm7 == 0 )      
      blend       bumpmap
      textures/base_wall/boxpanel_d.tga 
   }
   {
      if ( parm7 == 0 )
      blend            diffusemap      
      map      textures/base_wall/boxpanel_s.tga
   }
   {
      if ( parm7 == 0 )         
      blend      specularmap
      map      textures/base_wall/boxpanel_s.tga
   }


   {
      if ( parm7 == 1 )      
      blend       bumpmap
      textures/base_wall/boxpanel_d.tga
      scroll time * -.7 , time * .8 
   }
   {
      if (  parm7 == 1 )
      blend   diffusemap   
      map      textures/base_wall/boxpanel_s.tga
      scroll time * -.7 , time * .8
   }
   {
      if ( parm7 == 1 )         
      blend      specularmap
      map      textures/base_wall/boxpanel_s.tga
      scroll time * -.7 , time * .8
   }
   
}

when you set via script shaderparm7 to 1, the texture begins to scroll.

Code:

$entity_with_this_material.setShaderParm(7, 1 );

Absolutely never tested, but it should be (almost) ok

BloodRayne · **Posted:** Tue Aug 26, 2008 11:42 am

That works, I use it all the time in Hexen:Edge of Chaos for the weaponry. In fact we also used this technique to add a seperate 'rain' stage. Which makes things look wet when it's raining in a map. It's a very versatile feature.

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

thank you guys, testing right now, so far nothing, but i play around it a little more, thanks again!

Ivan_the_B · **Joined:** Fri Apr 22, 2005 11:55 pm **Posts:** 1180

"map" keyword inthe bumpmap stage was missing in my previous post :roll:

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

Using shaders parm work like a charm

I have another question, even two:

1) Is it possible to make triple changer material? In example - texture A -> B, then B-> C with one material?

2) How about blending? A->B with A fading out and B fading in?

If it is, how to do that?

BloodRayne · **Posted:** Wed Jan 27, 2010 9:55 am

mth wrote:

Using shaders parm work like a charm

I have another question, even two:

1) Is it possible to make triple changer material? In example - texture A -> B, then B-> C with one material?

2) How about blending? A->B with A fading out and B fading in?

If it is, how to do that?

1) Yes, an example:

Code:

 {
    ( if Parm8 == 1 )
    blend add
    <blah>
 }
 {
    ( if Parm8 == 2 )
    blend add
    <blah>
 }
 {
    ( if Parm8 == 3 )
    blend add
    <blah>
 }

Etc..etc.. But it's better to just use a skin if you want to do this, with the setSkin() function.

Blending/fading is a bit more tricky. You would need to use a Parm for that, something like:

Code:

 {
    blend add
    map <blah>
    RGB Parm8
 }
 {
    blend add
    map <blah>
    RGB Parm9
 }

With script/SDK you would loop through parms 8 and 9, e.g. for Parm8 from 0-1 and for Parm9 from 1-0.

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

Oh shit, so parms can have values other than 0 and 1? Awesome, with that knowledge both examples are piece of cake, thanks!

BloodRayne · **Posted:** Wed Jan 27, 2010 10:48 am

Yup, afaik Parms are just floats.

mth · **Joined:** Tue May 24, 2005 12:16 am **Posts:** 520

how about blending between two different normlamaps, is it possible somehow?

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triggering texture animation

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