Skinned mesh code part 3 - mesh and controller memory pools

posted in Gamedev info

Published June 30, 2015

  //  ----------------------------------- skinned mesh pool API -------------------------------------------  struct skinned_mesh_master{LPD3DXFRAME root;ID3DXAnimationController *controller;LPD3DXFRAME headbone;D3DXMESHCONTAINER_DERIVED *body, *bra, *loincloth;}; #define MAX_SKINNED_MESHES 100 skinned_mesh_master skinned_mesh_pool[MAX_SKINNED_MESHES]; int num_skinned_meshes=0;       void load_skinned_mesh_master(char *fname){int result;LPD3DXMESHCONTAINER p;result=load_skinned_mesh(fname,&skinned_mesh_pool[num_skinned_meshes].controller,&skinned_mesh_pool[num_skinned_meshes].root);switch (result)    {    case 1:        msg3("load skinned mesh master: invalid call!");        break;    case 2:        msg3("load skinned mesh master: out of memory!");        break;    case 3:        msg3("load skinned mesh master: setup bone matrix pointers error");        break;    }skinned_mesh_pool[num_skinned_meshes].headbone=get_bone(skinned_mesh_pool[num_skinned_meshes].root,"metarig_head");if (skinned_mesh_pool[num_skinned_meshes].headbone == NULL)    {    msg3("load skinned mesh master: metarig_head not found in root!");    }//  get pointer to body mesh to demonstrate interchangeable pooled textures for each mesh of a skinned meshp=get_mesh_container2(skinned_mesh_pool[num_skinned_meshes].root,"body");if (p == NULL)    {    msg3("load skinned mesh master: body frame meshcontainer is null!");    }skinned_mesh_pool[num_skinned_meshes].body=(D3DXMESHCONTAINER_DERIVED*)p;p=get_mesh_container2(skinned_mesh_pool[num_skinned_meshes].root,"bra");if (p == NULL)    {//  its a male skinned mesh, no bra mesh.    skinned_mesh_pool[num_skinned_meshes].bra=NULL;    }else    {    skinned_mesh_pool[num_skinned_meshes].bra=(D3DXMESHCONTAINER_DERIVED*)p;    }p=get_mesh_container2(skinned_mesh_pool[num_skinned_meshes].root,"loincloth");if (p == NULL)    {    msg3("load skinned mesh master: loincloth frame meshcontainer is null!");    }skinned_mesh_pool[num_skinned_meshes].loincloth=(D3DXMESHCONTAINER_DERIVED*)p;num_skinned_meshes++;}        void load_all_skinned_meshes(){FILE *f;int quit;char s[100];if (filefound("skinned_meshes.dat") == 0)    {    msg3("error: meshes.dat not found!");    return;    }num_skinned_meshes=0;f=infile("skinned_meshes.dat");quit=0;while (!quit)    {    readfile(f,s);    if (strcmp(s,"endfile") == 0)        {        quit=1;        }    else    if (s[0] == '/')        {//  do nothing, its a comment        }    else        {//  c msg2 s        load_skinned_mesh_master(s);        }    }fclose(f);}          void unload_all_skinned_meshes(){int i;for (i=0; i.controller,skinned_mesh_pool.root);    }}        //  -------------------------------------- controller pool API ------------------------------------------      struct skinned_mesh_instance{//  curani: -1 = noneint active,mesh_index,curani;ID3DXAnimationController *controller;}; #define MAX_SKINNED_MESH_INSTANCES 200 skinned_mesh_instance controller_pool[MAX_SKINNED_MESH_INSTANCES];       void init_controller_pool(){int i;for (i=0; i.active=0;    }}     int get_free_controller(){int i;for (i=0; i.active == 0)        {        return(i);        }    }return(-1);}        //  activates a controller. //  mesh_index is the index of the skinned mesh the controller should use.//  returns the index of the controller.  int activate_controller(int mesh_index){int j;j=get_free_controller();if (j == -1)    {    msg3("error: all animation controllers are in use!");    return(-1);    }controller_pool[j].active=1;clone_controller(skinned_mesh_pool[mesh_index].controller,&controller_pool[j].controller);controller_pool[j].mesh_index=mesh_index;controller_pool[j].curani=-1;return(j);}         void draw_skinned_mesh_instance(int i,double seconds,LPD3DXMATRIX mWorld){//  i is the index of the controller in the controller pool.int j;//  j is the index of the skinned mesh in the skinned mesh poolj=controller_pool.mesh_index;update_and_draw_skinned_mesh(controller_pool.controller,seconds,skinned_mesh_pool[j].root,mWorld);}           void deactivate_controller(int c){//  c is controller #if (controller_pool[c].active == 0)    {    return;    }if (controller_pool[c].controller == NULL)    {    return;    }controller_pool[c].controller->Release();controller_pool[c].controller=NULL;controller_pool[c].active=0;}         void deactivate_all_controllers(){int i;for (i=0; i.active == 1)        {        deactivate_controller(i);        }    }}   void controller_pool_setani(int cindex,int aniID){//  sets the animation of a controller in the controller pool.//  does not set if its already the current ani.//  cIndex is the controller index.//  aniID is the aniID.if (controller_pool[cindex].curani == aniID)    {    return;    }set_ani(controller_pool[cindex].controller,aniID);controller_pool[cindex].curani=aniID;}   //  the controller should track which ani its playing//  it does, via controller_pool.curani   /*   usage: // initinit_controller_poolload_all_skinned_meshesactivate_controller// drawdraw_skinned_mesh_instance// shutdowndeactivate_controller -or- deactivate_all_controllersunload_all_skinned_meshes       for drawing in caveman:a cm or animal rec will hold the controller index, similar to an aniplayerID.the mWorld for the cm or animal will be used.seconds will usually be 0.066.there will be a draw skinned mesh model routine that will set textures, then call draw_skinned_mesh_instance, thendraw attached stuff (eyes, hair, gear, weapons etc). texture IDs will be stored in the cm rec or the npc rec.     */        //  -------------------------- end mesh pool and controller pool APIs --------------------------

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