ref: 96759afc0218a1147e6de661a598267e121fcb84
dir: /model_alias.c/
#include "quakedef.h" static void * Mod_LoadAliasFrame( void * pin, int *pframeindex, int numv, trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name) { trivertx_t *pframe, *pinframe; int i, j; daliasframe_t *pdaliasframe; pdaliasframe = (daliasframe_t *)pin; strcpy (name, pdaliasframe->name); for (i=0 ; i<3 ; i++) { // these are byte values, so we don't have to worry about // endianness pbboxmin->v[i] = pdaliasframe->bboxmin.v[i]; pbboxmax->v[i] = pdaliasframe->bboxmax.v[i]; } pinframe = (trivertx_t *)(pdaliasframe + 1); *pframeindex = Hunk_From(pheader); pframe = Hunk_Alloc(numv * sizeof *pframe); for (j=0 ; j<numv ; j++) { int k; // these are all byte values, so no need to deal with endianness pframe[j].lightnormalindex = pinframe[j].lightnormalindex; for (k=0 ; k<3 ; k++) { pframe[j].v[k] = pinframe[j].v[k]; } } pinframe += numv; return (void *)pinframe; } static void * Mod_LoadAliasGroup( void * pin, int *pframeindex, int numv, trivertx_t *pbboxmin, trivertx_t *pbboxmax, aliashdr_t *pheader, char *name) { daliasgroup_t *pingroup; maliasgroup_t *paliasgroup; int i, numframes; daliasinterval_t *pin_intervals; float *poutintervals; void *ptemp; pingroup = (daliasgroup_t *)pin; numframes = LittleLong (pingroup->numframes); *pframeindex = Hunk_From(pheader); paliasgroup = Hunk_Alloc(sizeof(*paliasgroup) + (numframes - 1) * sizeof paliasgroup->frames[0]); paliasgroup->numframes = numframes; for (i=0 ; i<3 ; i++) { // these are byte values, so we don't have to worry about endianness pbboxmin->v[i] = pingroup->bboxmin.v[i]; pbboxmax->v[i] = pingroup->bboxmax.v[i]; } pin_intervals = (daliasinterval_t *)(pingroup + 1); paliasgroup->intervals = Hunk_From(pheader); poutintervals = Hunk_Alloc(numframes * sizeof *poutintervals); for (i=0 ; i<numframes ; i++) { *poutintervals = LittleFloat (pin_intervals->interval); if (*poutintervals <= 0.0) Host_Error("Mod_LoadAliasGroup: interval<=0"); poutintervals++; pin_intervals++; } ptemp = (void *)pin_intervals; for (i=0 ; i<numframes ; i++) { ptemp = Mod_LoadAliasFrame (ptemp, &paliasgroup->frames[i].frame, numv, &paliasgroup->frames[i].bboxmin, &paliasgroup->frames[i].bboxmax, pheader, name); } return ptemp; } static void * Mod_LoadAliasSkin(void * pin, int *pskinindex, int skinsize, aliashdr_t *pheader) { byte *pinskin; pixel_t *pskin; *pskinindex = Hunk_From(pheader); pskin = Hunk_Alloc(skinsize*4); pinskin = (byte *)pin; torgbx(pinskin, pskin, skinsize); pinskin += skinsize; return (void *)pinskin; } static void * Mod_LoadAliasSkinGroup( void * pin, int *pskinindex, int skinsize, aliashdr_t *pheader) { daliasskingroup_t *pinskingroup; maliasskingroup_t *paliasskingroup; int i, numskins; daliasskininterval_t *pinskinintervals; float *poutskinintervals; void *ptemp; pinskingroup = (daliasskingroup_t *)pin; numskins = LittleLong (pinskingroup->numskins); *pskinindex = Hunk_From(pheader); paliasskingroup = Hunk_Alloc(sizeof(*paliasskingroup) + (numskins - 1) * sizeof paliasskingroup->skindescs[0]); paliasskingroup->numskins = numskins; pinskinintervals = (daliasskininterval_t *)(pinskingroup + 1); paliasskingroup->intervals = Hunk_From(pheader); poutskinintervals = Hunk_Alloc(numskins * sizeof *poutskinintervals); for (i=0 ; i<numskins ; i++) { *poutskinintervals = LittleFloat (pinskinintervals->interval); if (*poutskinintervals <= 0) Host_Error("Mod_LoadAliasSkinGroup: interval<=0"); poutskinintervals++; pinskinintervals++; } ptemp = (void *)pinskinintervals; for (i=0 ; i<numskins ; i++) { ptemp = Mod_LoadAliasSkin (ptemp, &paliasskingroup->skindescs[i].skin, skinsize, pheader); } return ptemp; } void Mod_LoadAliasModel(model_t *mod, void *buffer) { int i; mdl_t *pmodel, *pinmodel; stvert_t *pstverts, *pinstverts; aliashdr_t *pheader; mtriangle_t *ptri; dtriangle_t *pintriangles; int version, numframes, numskins; int size; daliasframetype_t *pframetype; daliasskintype_t *pskintype; maliasskindesc_t *pskindesc; int skinsize; pinmodel = (mdl_t *)buffer; version = LittleLong (pinmodel->version); if (version != ALIAS_VERSION) Host_Error("%s has wrong version number (%d should be %d)", mod->name, version, ALIAS_VERSION); // allocate space for a working header, plus all the data except the frames, // skin and group info size = sizeof (aliashdr_t) + (LittleLong (pinmodel->numframes) - 1) * sizeof (pheader->frames[0]) + sizeof (mdl_t) + LittleLong (pinmodel->numverts) * sizeof (stvert_t) + LittleLong (pinmodel->numtris) * sizeof (mtriangle_t); pheader = Hunk_Alloc(size); pmodel = (mdl_t *) ((byte *)&pheader[1] + (LittleLong (pinmodel->numframes) - 1) * sizeof (pheader->frames[0])); pheader->model = (byte *)pmodel - (byte *)pheader; //mod->cache.data = pheader; mod->flags = LittleLong (pinmodel->flags); // endian-adjust and copy the data, starting with the alias model header pmodel->boundingradius = LittleFloat (pinmodel->boundingradius); pmodel->numskins = LittleLong (pinmodel->numskins); pmodel->skinwidth = LittleLong (pinmodel->skinwidth); pmodel->skinheight = LittleLong (pinmodel->skinheight); if (pmodel->skinheight > MAX_LBM_HEIGHT) Host_Error("model %s has a skin taller than %d", mod->name, MAX_LBM_HEIGHT); pmodel->numverts = LittleLong (pinmodel->numverts); if (pmodel->numverts <= 0) Host_Error("model %s has no vertices", mod->name); if (pmodel->numverts > MAXALIASVERTS) Host_Error("model %s has too many vertices", mod->name); pmodel->numtris = LittleLong (pinmodel->numtris); if (pmodel->numtris <= 0) Host_Error("model %s has no triangles", mod->name); pmodel->numframes = LittleLong (pinmodel->numframes); pmodel->size = LittleFloat (pinmodel->size) * ALIAS_BASE_SIZE_RATIO; mod->synctype = LittleLong (pinmodel->synctype); mod->numframes = pmodel->numframes; for (i=0 ; i<3 ; i++) { pmodel->scale[i] = LittleFloat (pinmodel->scale[i]); pmodel->scale_origin[i] = LittleFloat (pinmodel->scale_origin[i]); pmodel->eyeposition[i] = LittleFloat (pinmodel->eyeposition[i]); } numskins = pmodel->numskins; numframes = pmodel->numframes; if (pmodel->skinwidth & 0x03) Host_Error("Mod_LoadAliasModel: skinwidth not multiple of 4"); // load the skins skinsize = pmodel->skinheight * pmodel->skinwidth; if (numskins < 1) Host_Error("Mod_LoadAliasModel: Invalid # of skins: %d\n", numskins); pskintype = (daliasskintype_t *)&pinmodel[1]; pheader->skindesc = Hunk_From(pheader); pskindesc = Hunk_Alloc(numskins * sizeof *pskindesc); for (i=0 ; i<numskins ; i++) { aliasskintype_t skintype; skintype = LittleLong (pskintype->type); pskindesc[i].type = skintype; if (skintype == ALIAS_SKIN_SINGLE) { pskintype = (daliasskintype_t *) Mod_LoadAliasSkin (pskintype + 1, &pskindesc[i].skin, skinsize, pheader); } else { pskintype = (daliasskintype_t *) Mod_LoadAliasSkinGroup (pskintype + 1, &pskindesc[i].skin, skinsize, pheader); } } // set base s and t vertices pstverts = (stvert_t *)&pmodel[1]; pinstverts = (stvert_t *)pskintype; pheader->stverts = (byte *)pstverts - (byte *)pheader; for (i=0 ; i<pmodel->numverts ; i++) { pstverts[i].onseam = LittleLong (pinstverts[i].onseam); // put s and t in 16.16 format pstverts[i].s = LittleLong (pinstverts[i].s) << 16; pstverts[i].t = LittleLong (pinstverts[i].t) << 16; } // set up the triangles ptri = (mtriangle_t *)&pstverts[pmodel->numverts]; pintriangles = (dtriangle_t *)&pinstverts[pmodel->numverts]; pheader->triangles = (byte *)ptri - (byte *)pheader; for (i=0 ; i<pmodel->numtris ; i++) { int j; ptri[i].facesfront = LittleLong (pintriangles[i].facesfront); for (j=0 ; j<3 ; j++) { ptri[i].vertindex[j] = LittleLong (pintriangles[i].vertindex[j]); } } // load the frames if (numframes < 1) Host_Error("Mod_LoadAliasModel: Invalid # of frames: %d\n", numframes); pframetype = (daliasframetype_t *)&pintriangles[pmodel->numtris]; for (i=0 ; i<numframes ; i++) { aliasframetype_t frametype; frametype = LittleLong (pframetype->type); pheader->frames[i].type = frametype; if (frametype == ALIAS_SINGLE) { pframetype = (daliasframetype_t *) Mod_LoadAliasFrame (pframetype + 1, &pheader->frames[i].frame, pmodel->numverts, &pheader->frames[i].bboxmin, &pheader->frames[i].bboxmax, pheader, pheader->frames[i].name); } else { pframetype = (daliasframetype_t *) Mod_LoadAliasGroup (pframetype + 1, &pheader->frames[i].frame, pmodel->numverts, &pheader->frames[i].bboxmin, &pheader->frames[i].bboxmax, pheader, pheader->frames[i].name); } } mod->type = mod_alias; // FIXME: do this right mod->mins[0] = mod->mins[1] = mod->mins[2] = -16; mod->maxs[0] = mod->maxs[1] = mod->maxs[2] = 16; // move the complete, relocatable alias model to the cache Hunk_CacheFrom(&mod->cache, pheader); }