Make desert ground heat shader & sand particles possible? ( ready solution )

[kadir.basol]

Hello , i wanted to ask is it possible to make heat & sand particles on terrain ?

is it any ready made shader effects available on unigine?

[Rob]

Im also interested in this, hope someone has suggestion on how to create such an effect

[ulf.schroeter]

There is no out-of-the-box Unigine shader for such a very specialized effect available. For heat simulation Unigine material refraction on particles might be helpful. See flames in Sanctuary demo for example.

 

You should search the internet for visual examples (e.g. youtube) of the exact effect you whant to achive and post a link here, so others will get a more detailed understanding of your effect requirements. In the end such an effect most probably boils down to a complex combination of particle animation, texture overlay animation and dynamic render post-processing.

[manguste]

We can suggest the same approach as we used for creating a rain effect in Valley. It's drawn only around the camera.

 

1. Create two particle systems: sand particles and particles with refraction for heat. The second one is very much similar to the fire smoke (check library -> worlds -> sfx -> fire1 -> library_fire1_0.node).

 

 

2. Create a WorldExpression that drags its children across the scene after the player. Simply insert the following code:

 

{
// get player
Player player = engine.editor.getPlayer();
if(player == 0) player = engine.game.getPlayer();
if(player == 0) return;

// player position
vec3 offset = vec3(0.0f,0.0f,-15.0f);
mat4 transform = translate(player.getWorldTransform() * offset);

// transform childs
Node node = getNode();
forloop(int i = 0; node.getNumChilds()) {
  Node child = node.getChild(i);
  child.setWorldTransform(transform);
}
}

3. Make your particle systems children of WorldExpression.

[Rob]

Is it possible to trigger that script in a certain area? So the attached nodes will get enabled as soon you enter the specific area?

And if so could you provide an example of this? As I have 2 of these scripts in my scene, 1 to attach headlights as soon as you enter a cave and need the second one for the heat shader as soon as you enter a desert environment

[ulf.schroeter]

Use WorldTrigger. Examples can be found in Unigine sample folder.

[Rob]

Use WorldTrigger. Examples can be found in Unigine sample folder.

 

Oke thanks will have a look at it