Jump to content

April 2017 »

S M T W T F S
      1
2345678
9101112131415
16171819202122
2324 25 26272829
30      

Recent Comments

- - - - -

vortxGE 2.0 Particles 2



4: Adsense

  • vortxGE
  • vortxGE rewrite10
  • vortxGE rewrite9

I've been working on the particle system again, fixed some issues and added some new features.

Video shows 1000 particles, emit rate 100 every 5 seconds and at death it sets each particles gravity to 0. Not sure what this feature could be used for but I just thought it would be cool to have :-)


http://youtu.be/0hKxQ9h5tOQ

        // ################################
        // Test Particle system
        asset_bs = new lsAsset_BulletShape( vortxge->getAsset_manager() );
        asset_bs->Make_Box( 0.5, 0.5, 0.5 );
        vortxge->getAsset_manager()->Add_Asset( "bullet/particlebox", asset_bs );
        
        lsParticleEmitter *pe;
        pe = new lsParticleEmitter( 1000, vortxge->getOpenGL(), demo_scene );
        if( pe )
        {
            pe->position = lsVector3( 0.0, 25.0, 0.0 );
            pe->setDeath_type( LSDT_PARTICLE_GRAVITY );
            
            pe->Set_EmitRate( 100, 5*1000, 10*1000 );
            pe->Set_Volume( 20.0, 5.0, 20.0 );
            
            // Add light
            demo_scene->setFoundNode(0);
            demo_scene->Find_Node( demo_scene, "Spot" );
            if( demo_scene->getFoundNode() )
            {
                lsLight *light = (lsLight*)demo_scene->getFoundNode();
                pe->Add_Light( light );
            }
            // Set mesh
            lsAsset_Mesh *amesh;
            
            amesh = (lsAsset_Mesh*)vortxge->getAsset_manager()->Find_Asset( LSAT_MESH, "data/vbm/Cube.vbm" );
            if( amesh )
            {
                pe->mesh = amesh->getMesh();
            }
            pe->Init( 1.5, asset_bs, demo_scene );
            demo_scene->Add_Node( pe );
            
        }
      

Mar 15 2012 07:15 AM
I was still having an issue with hiding particles before they were reset to spawn point, they still reacted with other particles, so I added this callback to my bullet world.

bool lsFilterCallback::needBroadphaseCollision( btBroadphaseProxy* proxy0, btBroadphaseProxy* proxy1 ) const
{
    bool collides = (proxy0->m_collisionFilterGroup & proxy1->m_collisionFilterMask) != 0;
    collides = collides && (proxy1->m_collisionFilterGroup & proxy0->m_collisionFilterMask);
    
    //add some additional logic here that modifies 'collides'
    btCollisionObject* obA = static_cast<btCollisionObject*>(proxy0->m_clientObject);
    btCollisionObject* obB = static_cast<btCollisionObject*>(proxy1->m_clientObject);
    
    // Get Scene nodes
    lsNode *obj_A = (lsNode*)obA->getUserPointer();
    lsNode *obj_B = (lsNode*)obB->getUserPointer();
    if(( obj_A )&&( obj_B ))
    {
        switch( obj_A->getNode_type() )
        {
            case LSNT_PARTICLE:
                // check physics disabled
                if( obj_A->getHide() ) collides = false;
                break;
        }
        switch( obj_B->getNode_type() )
        {
            case LSNT_PARTICLE:
                // check physics disabled
                if( obj_B->getHide() ) collides = false;
                break;
        }
        
        /* Debug
        cout << "Object A : ";
        cout << obj_A->getName();
        cout << "  -  hit Object B : ";
        cout << obj_B->getName();
        cout << endl;
        */
    }
    return collides;
}

I basically check both Nodes to see if one has Hide set to true, if so return false to ignore collision.
I also do other things to make sure the particle doesn't render etc..
Mar 19 2012 10:49 PM
I would hate to be under all those falling blocks!

Looking superb as always!
Mar 20 2012 06:01 AM
LOL, it is a little annoying if you get stuck in the middle of them all, cant move... I really need to make something useful with this engine soon :-)

Any Game Designers starting out want a new engine to play with, drop me a message.
Mar 22 2012 11:36 PM
I would love to toy around with it, just playing 3 games of hockey a week. -.- Keep working on this though, my offer to use it still stands! :)
Mar 23 2012 08:13 AM
Hey man, your in for sure... But you should finish what you started first. And if you want any help I'm ready to put my hand up... Never discard anything your working on. Your game concept is sound and may make more money then other apps out there.

I'd work with you any day..

I've been watching your progress, and you have passion. no degree can even come close.

Really tell me when your ready and contact me.
Mar 25 2012 11:22 PM
Thanks, I appreciate that. I'm far from done my game, and believe me... I wont be quitting this project!

Keep up the great work as well!!!
Mar 26 2012 07:24 AM
Great to hear! Oh I've come to far to stop now :-)

Note: GameDev.net moderates comments.