Particles as sub objects

b1s · 04-11-2010 12:08 PM

im trying to create particles as sub object.
first it tried it like it was on the lights tutorial.. didnt have any luck.
I guess something was created but nothing visible.

Code:

// add custom children

   for(Game::ObjParams *cur=&obj; cur; cur=cur->base()) // check 'obj' and all its bases

      FREPA(cur->sub_obj) // for each sub-object in 'cur'

      {

         Game::ObjParams &o=cur->sub_obj[i];

         switch(Game::World.objType(o.type())) // check the type of sub-object

         {

         case OBJ_PARTICLES: // if there are particles involved.

             particles.create(o);

          break; 

         }

      }

Secondly i tried according to "Create multiple Phys objs in ME" thread something like this:
No luck here either.
Do i have to draw something or whats the deal when trying to add particles as sub objects?

Code:

for(Game::ObjParams *cur=&obj; cur; cur=cur->base()) // check 'obj' and all its bases

      FREPA(cur->sub_obj) // for each sub-object in 'cur'

      {

         __super::create(cur->sub_obj[i]);

      }

**Esenthel** · 04-11-2010 12:22 PM

1st code is ok (2nd is not)

but you still need to 'update' and 'draw' the 'particles' object

b1s · 04-11-2010 04:31 PM

im getting quite confused with the drawing.
im trying to call particles.drawPrepare(); inside drawPrepare of the item
and update from the items update.
i guess this is somehow wrong also.
could you elaborate about the drawing calls.. what are the methods that i should call exactly and where?

**Esenthel** · 04-11-2010 06:31 PM

oh, I've looked more into your code.
1st method you should use 'Particles' class instead of 'Game::ObjParticles'
the rest should be easy as you've got a tutorial for particles.

b1s · 04-11-2010 07:49 PM

hmm.. what im looking to do here is to add an already saved .obj particle effect to an item object. the particle tutorials seem to teach how to create a manual particle effects.
or am i missing something? isint it possible to add an object to a another object and it would just use the parents matrix and behave otherwise as a normal world editor particle effect.

So.. i only want the easiest way to add a particle effect to world and that its attached to an object.

**Esenthel** · 04-11-2010 09:19 PM

Particles p;

create:
p.create(Particles("..path.."));

update:
p.update(..

draw:
p.draw(..

b1s · 04-11-2010 10:35 PM

hmm ok thanks

b1s · 04-12-2010 08:45 AM

i don't understand why this has to be this hard.
Cant it just create it automatically in world.init() ?
Isn't it just an object that uses the parent objects matrix?

well i guess this is not too hard.. im still a bit confused about the draw calls.
I guess i shouldn't call the p.draw() inside drawPrepare()?
Would the correct thing to do be that i create a draw() for items and call them in the main draw loop? also i probably will have to check in which mode they should be called?

Code:

    // add custom children

    for(Game::ObjParams *cur=&obj; cur; cur=cur->base()) // check 'obj' and all its bases

      FREPA(cur->sub_obj) // for each sub-object in 'cur'

      {

            Game::ObjParams &objs=cur->sub_obj[i]; // get object

            Game::World.objCreate(objs,Matrix(obj.scale(),obj.matrix.pos));    

      }

This seems to create it to the correct position and matrix.
Only thing is now that i need a way to point to that object so i can update its position.

Particles as sub objects
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