[ODE] vanishing objects and clearing all objects

[Thomas Grimes]

Ahh crap you're right I didn't notice that. I can't believe I did that. Well 
that solved the "ghost box" problem after I clear. Thank's for pointing that 
out. I do believe I'm too tired to be coding right now. ;)

Also I'd like state about the other problem about disappearing boxes that it 
does this when three boxes touch each other. I can't seem to figure this one 
out at all. But when three boxes touch each other and they all stop moving 
around and are at rest, they just vanish! Thanks.



>From: Ed Jones <ed.jones@oracle.com>
>To: Thomas Grimes <striiideerr@hotmail.com>
>Subject: Re: [ODE] vanishing objects and clearing all objects
>Date: Tue, 05 Aug 2003 12:52:49 +1000
>
>>t = next_obj = obj_num = 0;
>
>
>You're only ever going to destroy the first object aren't you?
>
>Do you mean to put that outside the for loop?
>
>Cheers,
>Ed.
>
>
>Thomas Grimes wrote:
>
>>I have made a simple ODE demo that does the same thing as the box dropping 
>>demo that comes with the ODE source. Well for some odd reason mine is 
>>having issues. For one, when I made my demo let me drop more than one box 
>>at once I noticed that sometimes, not always, a small group of my boxes 
>>will just vanish! Now I have my program setup so that you can't drop more 
>>than 10 boxes and if you try to it does nothing, it wont execute the code 
>>that creates new boxes and such. What would cause some of the objects to 
>>just vanish?
>>
>>Also, I have an option that when I hit the 'c' key, all of the boxes get 
>>cleared so I can drop some more. Here is what that part looks like:
>>
>>if( KEYDOWN( buffer, DIK_C ) && !KEYDOWN( oldbuff, DIK_C ) )    // Clear 
>>the box (C key)
>>{
>>   for( int i = 0; i < obj_num; ++i )
>>  {
>>      dBodyDestroy( g_obj[i].body );
>>      dGeomDestroy( g_obj[i].geom[0] );
>>      memset( &g_obj[i], 0, sizeof( g_obj[i] ) );
>>
>>      t = next_obj = obj_num = 0;
>>  }
>>
>>  dropped = false;
>>}
>>
>>Ok after I do this all boxes are gone. But when I start dropping more 
>>boxes, it's like those old boxes still exist in the world and my new ones 
>>will bounce or sit on the old but invisible boxes. Why would it be doing 
>>that? When I hit 'c' I want all box objects I created to be gone 
>>completely and not leave their "ghost" in the world. Thanks.
>>
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