/* gl_model.c model loading and caching Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA $Id$ */ // models are the only shared resource between a client and server running // on the same machine. #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include "compat.h" #include "QF/crc.h" #include "QF/info.h" #include "QF/model.h" #include "QF/msg.h" #include "QF/qendian.h" #include "QF/sys.h" #include "QF/vfs.h" #include "d_iface.h" #include "r_local.h" extern char loadname[]; extern model_t *loadmodel; void *Mod_LoadAllSkins (int numskins, daliasskintype_t *pskintype, int *pskinindex); void GL_MakeAliasModelDisplayLists (model_t *m, aliashdr_t *hdr, void *model, int size); /* ALIAS MODELS */ aliashdr_t *pheader; stvert_t stverts[MAXALIASVERTS]; mtriangle_t triangles[MAXALIASTRIS]; // a pose is a single set of vertexes. a frame may be an animating // sequence of poses trivertx_t *poseverts[MAXALIASFRAMES]; int posenum = 0; void *Mod_LoadAliasFrame (void *pin, maliasframedesc_t *frame); void *Mod_LoadAliasGroup (void *pin, maliasframedesc_t *frame); //========================================================================= void Mod_LoadAliasModel (model_t *mod, void *buffer) { int i, j; mdl_t *pinmodel, *pmodel; stvert_t *pinstverts; dtriangle_t *pintriangles; int version, numframes; int size; daliasframetype_t *pframetype; daliasskintype_t *pskintype; int start, end, total; byte *p; int len; unsigned short crc; CRC_Init (&crc); for (len = com_filesize, p = buffer; len; len--, p++) CRC_ProcessByte (&crc, *p); start = Hunk_LowMark (); pinmodel = (mdl_t *) buffer; version = LittleLong (pinmodel->version); if (version != ALIAS_VERSION) Sys_Error ("%s has wrong version number (%i should be %i)", mod->name, version, ALIAS_VERSION); // allocate space for a working header, plus all the data except the // frames, skin and group info size = field_offset (aliashdr_t, frames[LittleLong (pinmodel->numframes)]); pheader = Hunk_AllocName (size, loadname); memset (pheader, 0, size); pmodel = &pheader->mdl; pheader->model = (byte *) pmodel - (byte *) pheader; pheader->crc = crc; 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) Sys_Error ("model %s has a skin taller than %d", mod->name, MAX_LBM_HEIGHT); pmodel->numverts = LittleLong (pinmodel->numverts); if (pmodel->numverts <= 0) Sys_Error ("model %s has no vertices", mod->name); if (pmodel->numverts > MAXALIASVERTS) Sys_Error ("model %s has too many vertices", mod->name); pmodel->numtris = LittleLong (pinmodel->numtris); if (pmodel->numtris <= 0) Sys_Error ("model %s has no triangles", mod->name); pmodel->numframes = LittleLong (pinmodel->numframes); numframes = pmodel->numframes; if (numframes < 1) Sys_Error ("Mod_LoadAliasModel: Invalid # of frames: %d\n", 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]); } // load the skins pskintype = (daliasskintype_t *) &pinmodel[1]; pskintype = Mod_LoadAllSkins (pheader->mdl.numskins, pskintype, &pheader->skindesc); // load base s and t vertices pinstverts = (stvert_t *) pskintype; for (i = 0; i < pheader->mdl.numverts; i++) { stverts[i].onseam = LittleLong (pinstverts[i].onseam); stverts[i].s = LittleLong (pinstverts[i].s); stverts[i].t = LittleLong (pinstverts[i].t); } // load triangle lists pintriangles = (dtriangle_t *) &pinstverts[pheader->mdl.numverts]; for (i = 0; i < pheader->mdl.numtris; i++) { triangles[i].facesfront = LittleLong (pintriangles[i].facesfront); for (j = 0; j < 3; j++) { triangles[i].vertindex[j] = LittleLong (pintriangles[i].vertindex[j]); } } // load the frames posenum = 0; pframetype = (daliasframetype_t *) &pintriangles[pheader->mdl.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]); } else { pframetype = (daliasframetype_t *) Mod_LoadAliasGroup (pframetype + 1, &pheader->frames[i]); } } pheader->numposes = posenum; 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; // build the draw lists GL_MakeAliasModelDisplayLists (mod, pheader, buffer, com_filesize); // move the complete, relocatable alias model to the cache end = Hunk_LowMark (); total = end - start; Cache_Alloc (&mod->cache, total, loadname); if (!mod->cache.data) return; memcpy (mod->cache.data, pheader, total); Hunk_FreeToLowMark (start); }