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AndyGFX
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PostPosted: Wed Jun 18, 2008 11:40 am 
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FINISHED.

here is solution but SVN isn't now updated:

Code:
...

    raydium_particle_generator_load("dust.prt","dustA");
    raydium_particle_generator_load("dust.prt","dustB");
    raydium_particle_generator_load("dust.prt","dustC");
    raydium_particle_generator_load("dust.prt","dustD");

    raydium_ode_element_particle_offset_name_3f(CAR.wheel_A.name,"dustA",0,0,0);
    raydium_ode_element_particle_offset_name_3f(CAR.wheel_B.name,"dustB",0,0,0);
    raydium_ode_element_particle_offset_name_3f(CAR.wheel_C.name,"dustC",0,0,0);
    raydium_ode_element_particle_offset_name_3f(CAR.wheel_D.name,"dustD",0,0,0);

    CAR.wheel_A.particle_id = raydium_particle_generator_find("dustA");
    CAR.wheel_B.particle_id = raydium_particle_generator_find("dustB");
    CAR.wheel_C.particle_id = raydium_particle_generator_find("dustC");
    CAR.wheel_D.particle_id = raydium_particle_generator_find("dustD");

    CAR.wheel_A.element_id = raydium_ode_element_find(CAR.wheel_A.name);
    CAR.wheel_B.element_id = raydium_ode_element_find(CAR.wheel_B.name);
    CAR.wheel_C.element_id = raydium_ode_element_find(CAR.wheel_C.name);
    CAR.wheel_D.element_id = raydium_ode_element_find(CAR.wheel_D.name);

...


and callback looks:

Code:
char WheelCollision(int e1, int e2, dContact *c)
{
    int i1,i2;
    i1=raydium_ode_element_tag_get(e1);
    i2=raydium_ode_element_tag_get(e2);
    dReal *origin_A;
    dReal *origin_B;
    dReal *origin_C;
    dReal *origin_D;



    if (i1==TYPE_WHEEL)
    {
     if (CAR.wheel_A.element_id == raydium_ode_element[e1].id)
     {
         origin_A=raydium_ode_element_pos_get(raydium_ode_element[e1].id);
         raydium_particle_generator_move(CAR.wheel_A.particle_id,origin_A);
     }

     if (CAR.wheel_B.element_id == raydium_ode_element[e1].id)
     {
         origin_B=raydium_ode_element_pos_get(raydium_ode_element[e1].id);
         raydium_particle_generator_move(CAR.wheel_B.particle_id,origin_B);
     }

     if (CAR.wheel_C.element_id == raydium_ode_element[e1].id)
     {
         origin_C=raydium_ode_element_pos_get(raydium_ode_element[e1].id);
         raydium_particle_generator_move(CAR.wheel_C.particle_id,origin_C);
     }
     if (CAR.wheel_D.element_id == raydium_ode_element[e1].id)
     {
         origin_D=raydium_ode_element_pos_get(raydium_ode_element[e1].id);
         raydium_particle_generator_move(CAR.wheel_D.particle_id,origin_D);
     }
    }
}


and work really nice, now i have a lot of possibility for nice visual FX ... big thanks. When you find any mistake in logic then write me ... big thanks


EDIT.: Last question is how to STOP emitting from particle, because this is needed when car has speed=0.
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ouille
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PostPosted: Wed Jun 18, 2008 12:44 pm 
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Joined: Sun Oct 09, 2005 10:46 pm
Posts: 759
Hello,

Some remarks ...


wheel element can be e2 as e1. Be carrefull your code won't work in that case.

I think that there is position information in dcontact (geom.pos) which give you exact position of contact.

Anyway it's good. Update Svn, i can test.

Have a nice day
Ouille
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AndyGFX
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PostPosted: Wed Jun 18, 2008 1:18 pm 
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Location: SLOVAKIA
SVN updated.

And any help about ---> how to STOP emitting from particle, because this is needed when car has speed=0.
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vicentecarro
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PostPosted: Wed Jun 18, 2008 5:06 pm 
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Posts: 828
About dummy object:

As long as I know you can make a dummy object with certain ease.
By one side you can create an element as usual. Then you can disable the collisions with that element. For example:
Code:
raydium_ode_object_colliding(elementid,0);

or
Code:
raydium_ode_object_colliding_name("elementname",0);


I've not tested this yet, but according the reference it should work.
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AndyGFX
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PostPosted: Wed Jun 18, 2008 7:57 pm 
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Why is movement with lagging, like MP game on slow network !!!!
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ouille
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PostPosted: Thu Jun 19, 2008 7:19 am 
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Posts: 759
Hello,

You can enable / disable particle generator with:
Code:
raydium_particle_generator_enable


About lag.
You need do decrease number of particule. Here i got 60fps when car is moving, but drop to 20 when i stop (i think that particle update become slow).

Particle position update in collide callback is called at 400Hz perhapse you can filter this to have only one update for a frame.

Have a nice day.
Ouille
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AndyGFX
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PostPosted: Thu Jun 19, 2008 8:53 am 
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Thx for answer

BUT

1) particles count isn't a problem, this problem was before too (without particles) btw. this has impact to framerate and then is rendering pipeline freezed, but then continue normaly

2) my LAG problem return car position BACK on position a few sec. back - this is LAG with a car reposition
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vicentecarro
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PostPosted: Thu Jun 19, 2008 10:17 am 
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I have no lag... Just low framerate with particles
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ouille
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PostPosted: Thu Jun 19, 2008 10:22 am 
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Posts: 759
Hello,

Not such lag car don't go back here .

Have a nice day

Ouille
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AndyGFX
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PostPosted: Thu Jun 19, 2008 10:51 am 
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Hmm.

Ok today we publish video with this problem, for better understanding.

Note: a few facts, CAR position is OK, only camera is a randomly stopped and then it jumped to calculated position with F2 - CAR camera view, this looks like problem with raydium_camera_smooth cmd, because all others VIEW TYPES are working good.
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vicentecarro
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PostPosted: Thu Jun 19, 2008 11:53 am 
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the smoothed camera has know issues.
For example if your computer is done something in background (p2p, compressión, decompression, video...) the frame time could change a lot compared with the previous one. As the smooth positions are calculed with those frame times then yes, you could see like-lag effect in camera.

At first I would claim that windows is the problem... but you told me yesterday the problem was also with linux. So... i assume win* is not the problem.

Do you run others application in background while testing? Maybe chat with encryption (quite cpu intensive)?
Can you look at your system monitor to search for cpu peaks?
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vicentecarro
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PostPosted: Thu Jun 19, 2008 12:01 pm 
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I just have found this topic that maybe could help:
viewtopic.php?t=668
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AndyGFX
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PostPosted: Thu Jun 19, 2008 12:44 pm 
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thx. implemented and was tried - but same result :(
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AndyGFX
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PostPosted: Thu Jun 19, 2008 12:47 pm 
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vicente wrote:
the smoothed camera has know issues.
For example if your computer is done something in background (p2p, compressión, decompression, video...) the frame time could change a lot compared with the previous one. As the smooth positions are calculed with those frame times then yes, you could see like-lag effect in camera.

At first I would claim that windows is the problem... but you told me yesterday the problem was also with linux. So... i assume win* is not the problem.

Do you run others application in background while testing? Maybe chat with encryption (quite cpu intensive)?
Can you look at your system monitor to search for cpu peaks?


I don't think that is problem with background process because i have Hi-End HW and i don't have problem with speed - games like Crysis, Lost planets, Assassin Creed with DX10 works absolutly smooth.
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AndyGFX
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PostPosted: Fri Jun 20, 2008 9:13 am 
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I found solution for my problem, was partly fixed with this command raydium_render_fps_limit(25), but from my point of view it's strange and maybe better is set callback for display less. My experiens is that call render display every 5ms is good => 200 times per sec, then CPU has time for other processes on background.
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