MeshParticleEmitter

Unity Engine
1

I cannot find MeshParticleEmitter in the API doc, is there a trick ?

2

It’s mostly the same thing as the ellipsoid particle emitter, so you use the same interface (i.e., ParticleEmitter).

–Eric

3

and to attach the mesh I use ParticleEmitter.mesh = mesh ? It’s not working so far.

gpe  = g.AddComponent ( ParticleEmitter );
gPR = g.AddComponent ( ParticleRenderer );
gPR.material = particleMaterial;
gPR.maxParticleSize = 2.0;
gpe.mesh = g.GetComponent(Mesh);
gpe.Emit (100);
4

Nope, the emitter just uses the normal mesh component of the object, so you attach the mesh the usual way.

–Eric

5

When I play the following code it’s telling me:
“Can’t produce abstract class” on g.AddComponent ( ParticleEmitter )
“Can’t add component because the component ‘ParticleEmitter’ can’t be produced.”

var grassPatches : GameObject [];
var particleMaterial : Material;

function Start()
{
	MossInit(1);
}

function MossInit(l : int)
{
	for (var g in grassPatches)
	{
		var gpe : ParticleEmitter = g.AddComponent ( ParticleEmitter ); // a mesh emitter?
		var gPR : ParticleRenderer = g.AddComponent ( ParticleRenderer );
		gPR.material = particleMaterial;
		gPR.maxParticleSize = 2.0;
		gpe.Emit (100);
	}
}

function MossMoss(l: int)
{
}

function Update () 
{
	for (var g in grassPatches)
	{
		var gp : ParticleEmitter = g.GetComponent(ParticleEmitter);
		gp.maxSize = Random.value*2.0;
	}
}
6

As far as I know this is just something they forgot to do or got distracted halfway through implementing. I wouldn’t be surprised if it shows up in the next version.

Does AddComponent(“MeshParticleEmitter”) Work?

Also, as of 2.0 the mesh particle emitter has a mesh variable and doesn’t use the mesh filter anymore. Therefore it is impossible to asign a mesh to a mesh particle emitter at run time.

7

Oops…somehow I failed to notice that… I assume there was a good reason for that, but it kind of seems like not such a great idea at the moment.

–Eric