The easiest way is to use engine->CreateMeshWrapper(). This is
actually documented in the manual. Check the using cs/engine/meshobj
section where it is explained how you can in general create a mesh
from a factory.
Greetings,
On 2/18/06, Vincent Knecht <[EMAIL PROTECTED]> wrote:
> Hi !
>
> I'm trying to create particle systems from code, using a factory from a
> file... I've tried many combinations, but I'm lost.
> How to do that ?
>
> The following code fails on getting iParticleState:
>
> csRef<iMeshFactoryWrapper> factoryw = loader->LoadMeshObjectFactory (
> "/xd/models/thrusterparticles");
> if (!factoryw)
> return ReportError ("Unable to load thrusterparticles!");
>
> // Initialize the emitter mesh object(s) used for thruster(s).
> emitters.Empty ();
> size_t i = 0;
> csString pattern;
> keybase = cfgkey + "ThrusterUnit.";
> while (config->SubsectionExists (pattern.Format (keybase + "%d.", i)))
> {
> ThrustersInfos* infos = new ThrustersInfos (); // a csObject
> /* that doesn't work neither
> csString meshname;
> infos->meshw = engine->CreateMeshWrapper (factoryw,
> meshname.Format ("ThrusterEmitter%d", i),
> pccamera->GetCamera ()->GetSector (),
> csVector3 (0.0f, 0.0f, 0.0f));
> */
> infos->meshw = factoryw->CreateMeshWrapper ();
> if (!infos->meshw)
> return ReportError ("Unable to create particle meshwrapper!");
> ///engine->AddMeshAndChildren (infos->meshw);
> //infos->SetName (meshname.GetData ());
> // is messing with iMeshObject really needed ?
> csRef<iMeshObject> meshobject =
> factoryw->GetMeshObjectFactory ()->NewInstance ();
> infos->meshw->SetMeshObject (meshobject);
> engine->AddMeshAndChildren (infos->meshw);
>
> infos->state = SCF_QUERY_INTERFACE (infos->meshw->GetMeshObject (),
> iParticleState);
> if (!infos->state)
> return ReportError ("Unable to get iParticleState!");
> [...]
>
> just in case:
> ===== /xd/models/thrusterparticles ===================
> <!-- <library> -->
> <meshfact name="thrusterFACT">
> <plugin>crystalspace.mesh.loader.factory.particles</plugin>
> <params>
> <emitter type="sphere">
> <time>300</time>
> <innerradius>0.01</innerradius>
> <outerradius>0.03</outerradius>
> <force type="linear">
> <direction x="0.5" y="1" z="0"/>
> <amount>10</amount>
> <range>3.0</range>
> <falloff>linear</falloff>
> </force>
> </emitter>
> <dampener>0.1</dampener>
> <mass>5</mass>
> <massvariation>2.5</massvariation>
> <pps>50</pps>
> <initial>0</initial>
> <gravity x="0" y="-1" z="0"/>
> <diffusion>0.1</diffusion>
> <radius>0.1</radius>
> <ttl>5</ttl>
> <zsort>yes</zsort>
> <timevariation>0.5</timevariation>
> <colormethod type="linear">
> <gradient>
> <color red="0" green="0" blue="1"/>
> <color red="0" green="0.5" blue="1"/>
> <color red="1" green="1" blue="1"/>
> </gradient>
> </colormethod>
> </params>
> </meshfact>
> <!-- </library> -->
> ==================================
>
> TIA
>
>
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--
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and CEL (http://cel.crystalspace3d.org)
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