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About SV_StudioSetupBones


  
 
 
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ConnorMcLeod
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Join Date: Jul 2006
Location: France (95)
Old 10-30-2013 , 14:01   Re: About SV_StudioSetupBones
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Code:
/* DESCRIPTION: SV_StudioSetupBones
// Location: SDK, as SetupBones
// PATH: An annoying API.
//
// This 'sets up' bones.  I'm starting to get the picture, but I don't know
// enough to describe what's actualy going on.
*/
void SV_StudioSetupBones(model_t * arg_0, float arg_4, int arg_8_sequence,
                         vec3_t arg_C, vec3_t arg_10, byte * arg_14,
                         byte * arg_18, int arg_1C, edict_t * unused) {

   int               i, j, var_270, var_26C[0x80];
   float             var_c, var_10, var_30[8];

   vec_t              bonematrix[3][4];
   mstudiobone_t      *pbones;
   mstudioseqdesc_t   *pseqdesc;
   mstudioanim_t      *panim;

   #define MAXSTUDIOBONES 128
   static vec3_t      pos[MAXSTUDIOBONES];
   static vec4_t      q[MAXSTUDIOBONES];
   static vec3_t      pos2[MAXSTUDIOBONES];
   static vec4_t      q2[MAXSTUDIOBONES];


   var_270 = 0;
   if(arg_8_sequence < 0 || arg_8_sequence >= pstudiohdr->numseq) {
      Con_Printf("%s: Sequence %i/%i out of range for model %s.\n", __FUNCTION__, arg_8_sequence, pstudiohdr->numseq, pstudiohdr->name);
      arg_8_sequence = 0;
   }

   pseqdesc = (mstudioseqdesc_t *)((byte *)pstudiohdr + pstudiohdr->seqindex) + arg_8_sequence;
   pbones = (mstudiobone_t *)((byte *)pstudiohdr + pstudiohdr->boneindex);

   panim = R_GetAnim(arg_0, pseqdesc);

   if(arg_1C < -1 || arg_1C >= pstudiohdr->numbones) { arg_1C = 0; }
   if(arg_1C == -1) {
      var_270 = pstudiohdr->numbones;
      for(i = 0; i < pstudiohdr->numbones; i++) {

         var_26C[(var_270 - i) - 1] = i;
      }
   }
   else {
      for(i = arg_1C; i != -1; i = pbones[i].parent) {

         var_26C[var_270] = i;
         var_270++;
      }
   }

   if(pseqdesc->numframes > 1) {
      var_c = (pseqdesc->numframes - 1) * arg_4 / 256.0;
   }
   else {
      var_c = 0;
   }

   var_10 = var_c - (int)var_c; //so, the decimal part.
   R_StudioCalcBoneAdj(0, var_30, arg_14, arg_14, 0);

   for(j = var_270 - 1; j >= 0; j--) {

      i = var_26C[j];
      R_StudioCalcBoneQuaterion((int)var_c, var_10, &(pbones[i]), &(panim[i]), var_30, q[i]);
      R_StudioCalcBonePosition((int)var_c, var_10, &(pbones[i]), &(panim[i]), var_30, pos[i]);
   }

   if(pseqdesc->numblends > 1) {

      //Waitaminute, why are we doing this over again?
      pseqdesc = (mstudioseqdesc_t *)((byte *)pstudiohdr + pstudiohdr->seqindex) + arg_8_sequence;
      panim = R_GetAnim(arg_0, pseqdesc);

      panim += pstudiohdr->numbones;

      for(j = var_270 - 1; j >= 0; j--) {

         i = var_26C[j];
         R_StudioCalcBoneQuaterion((int)var_c, var_10, &(pbones[i]), &(panim[i]), var_30, q2[i]);
         R_StudioCalcBonePosition((int)var_c, var_10, &(pbones[i]), &(panim[i]), var_30, pos2[i]);
      }

      R_StudioSlerpBones(q, pos, q2, pos2, ((float)(arg_18[0])) / 255.0);
   }

   AngleMatrix(arg_C, rotationmatrix);
   rotationmatrix[0][3] = arg_10[0];
   rotationmatrix[1][3] = arg_10[1];
   rotationmatrix[2][3] = arg_10[2];

   for(j = var_270 - 1; j >= 0; j--) {

      i = var_26C[j];
      QuaternionMatrix(q[i], bonematrix);
      bonematrix[0][3] = pos[i][0];
      bonematrix[1][3] = pos[i][0];
      bonematrix[2][3] = pos[i][0];

      //These two both pop up annoying errors about incompatible pointer types.  I don't see the flaw, and the right address is definitely being passed.
      if(pbones[i].parent == -1) {
         R_ConcatTransforms(rotationmatrix, bonematrix, bonetransform[i]);
      }
      else {
         R_ConcatTransforms(bonetransform[pbones[i].parent], bonematrix, bonetransform[i]);
      }
   }
}
Seems to be called from [FM_/EngFunc_]GetBonePosition and from [FM_/EngFunc_]GetAttachment
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Last edited by ConnorMcLeod; 10-30-2013 at 14:05.
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