1 /* $Id: polyobj.c,v 1.7 2002-08-06 05:13:58 btb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
20 static char rcsid[] = "$Id: polyobj.c,v 1.7 2002-08-06 05:13:58 btb Exp $";
27 // -- I hate this warning in make depend! -- #ifdef DRIVE
28 // -- I hate this warning in make depend! -- #include "drive.h"
29 // -- I hate this warning in make depend! -- #else
31 // -- I hate this warning in make depend! -- #endif
58 polymodel Polygon_models[MAX_POLYGON_MODELS]; // = {&bot11,&bot17,&robot_s2,&robot_b2,&bot11,&bot17,&robot_s2,&robot_b2};
60 int N_polygon_models = 0;
62 #define MAX_POLYGON_VECS 1000
63 g3s_point robot_points[MAX_POLYGON_VECS];
65 #define PM_COMPATIBLE_VERSION 6
66 #define PM_OBJFILE_VERSION 8
71 #define MODEL_BUF_SIZE 32768
73 void _pof_cfseek(int len,int type)
76 case SEEK_SET: Pof_addr = len; break;
77 case SEEK_CUR: Pof_addr += len; break;
79 Assert(len <= 0); // seeking from end, better be moving back.
80 Pof_addr = Pof_file_end + len;
84 if (Pof_addr > MODEL_BUF_SIZE)
88 #define pof_cfseek(_buf,_len,_type) _pof_cfseek((_len),(_type))
90 int pof_read_int(ubyte *bufp)
94 i = *((int *) &bufp[Pof_addr]);
98 // if (cfread(&i,sizeof(i),1,f) != 1)
99 // Error("Unexpected end-of-file while reading object");
104 size_t pof_cfread(void *dst, size_t elsize, size_t nelem, ubyte *bufp)
106 if (Pof_addr + nelem*elsize > Pof_file_end)
109 memcpy(dst, &bufp[Pof_addr], elsize*nelem);
111 Pof_addr += elsize*nelem;
113 if (Pof_addr > MODEL_BUF_SIZE)
119 // #define new_read_int(i,f) cfread(&(i),sizeof(i),1,(f))
120 #define new_pof_read_int(i,f) pof_cfread(&(i),sizeof(i),1,(f))
122 short pof_read_short(ubyte *bufp)
126 s = *((short *) &bufp[Pof_addr]);
129 // if (cfread(&s,sizeof(s),1,f) != 1)
130 // Error("Unexpected end-of-file while reading object");
135 void pof_read_string(char *buf,int max_char, ubyte *bufp)
139 for (i=0; i<max_char; i++) {
140 if ((*buf++ = bufp[Pof_addr++]) == 0)
144 // while (max_char-- && (*buf=cfgetc(f)) != 0) buf++;
148 void pof_read_vecs(vms_vector *vecs,int n,ubyte *bufp)
150 // cfread(vecs,sizeof(vms_vector),n,f);
152 memcpy(vecs, &bufp[Pof_addr], n*sizeof(*vecs));
153 Pof_addr += n*sizeof(*vecs);
155 if (Pof_addr > MODEL_BUF_SIZE)
159 #define ID_OHDR 0x5244484f // 'RDHO' //Object header
160 #define ID_SOBJ 0x4a424f53 // 'JBOS' //Subobject header
161 #define ID_GUNS 0x534e5547 // 'SNUG' //List of guns on this object
162 #define ID_ANIM 0x4d494e41 // 'MINA' //Animation data
163 #define ID_IDTA 0x41544449 // 'ATDI' //Interpreter data
164 #define ID_TXTR 0x52545854 // 'RTXT' //Texture filename list
167 #define robot_info void
169 vms_angvec anim_angs[N_ANIM_STATES][MAX_SUBMODELS];
171 //set the animation angles for this robot. Gun fields of robot info must
173 void robot_set_angles(robot_info *r,polymodel *pm,vms_angvec angs[N_ANIM_STATES][MAX_SUBMODELS]);
176 //reads a binary file containing a 3d model
177 polymodel *read_model_file(polymodel *pm,char *filename,robot_info *r)
181 int id,len, next_chunk;
185 model_buf = (ubyte *)d_malloc( MODEL_BUF_SIZE * sizeof(ubyte) );
187 Error("Can't allocate space to read model %s\n", filename);
189 if ((ifile=cfopen(filename,"rb"))==NULL)
190 Error("Can't open file <%s>",filename);
192 Assert(ifile->size <= MODEL_BUF_SIZE);
195 Pof_file_end = cfread(model_buf, 1, cfilelength(ifile), ifile);
198 id = pof_read_int(model_buf);
200 if (id!=0x4f505350) /* 'OPSP' */
201 Error("Bad ID in model file <%s>",filename);
203 version = pof_read_short(model_buf);
205 if (version < PM_COMPATIBLE_VERSION || version > PM_OBJFILE_VERSION)
206 Error("Bad version (%d) in model file <%s>",version,filename);
208 if ( FindArg( "-bspgen" ))
209 printf( "bspgen -c1" );
211 while (new_pof_read_int(id,model_buf) == 1) {
213 //id = pof_read_int(model_buf);
214 len = pof_read_int(model_buf);
215 next_chunk = Pof_addr + len;
219 case ID_OHDR: { //Object header
220 vms_vector pmmin,pmmax;
222 //mprintf(0,"Got chunk OHDR, len=%d\n",len);
224 pm->n_models = pof_read_int(model_buf);
225 pm->rad = pof_read_int(model_buf);
227 Assert(pm->n_models <= MAX_SUBMODELS);
229 pof_read_vecs(&pmmin,1,model_buf);
230 pof_read_vecs(&pmmax,1,model_buf);
232 if ( FindArg( "-bspgen" )) {
236 vm_vec_sub(&v, &pmmax, &pmmin );
238 if ( v.y > l ) l = v.y;
239 if ( v.z > l ) l = v.z;
241 printf( " -l%.3f", f2fl(l) );
247 case ID_SOBJ: { //Subobject header
252 //mprintf(0,"Got chunk SOBJ, len=%d\n",len);
254 n = pof_read_short(model_buf);
256 Assert(n < MAX_SUBMODELS);
258 pm->submodel_parents[n] = pof_read_short(model_buf);
260 pof_read_vecs(&pm->submodel_norms[n],1,model_buf);
261 pof_read_vecs(&pm->submodel_pnts[n],1,model_buf);
262 pof_read_vecs(&pm->submodel_offsets[n],1,model_buf);
264 pm->submodel_rads[n] = pof_read_int(model_buf); //radius
266 pm->submodel_ptrs[n] = pof_read_int(model_buf); //offset
273 case ID_GUNS: { //List of guns on this object
275 //mprintf(0,"Got chunk GUNS, len=%d\n",len);
280 ubyte gun_used[MAX_GUNS];
282 r->n_guns = pof_read_int(model_buf);
287 Assert(r->n_guns <= MAX_GUNS);
289 for (i=0;i<r->n_guns;i++)
292 for (i=0;i<r->n_guns;i++) {
295 id = pof_read_short(model_buf);
296 Assert(id < r->n_guns);
297 Assert(gun_used[id] == 0);
299 r->gun_submodels[id] = pof_read_short(model_buf);
300 Assert(r->gun_submodels[id] != 0xff);
301 pof_read_vecs(&r->gun_points[id],1,model_buf);
304 pof_read_vecs(&gun_dir,1,model_buf);
308 pof_cfseek(model_buf,len,SEEK_CUR);
313 case ID_ANIM: //Animation data
314 //mprintf(0,"Got chunk ANIM, len=%d\n",len);
321 n_frames = pof_read_short(model_buf);
323 Assert(n_frames == N_ANIM_STATES);
325 for (m=0;m<pm->n_models;m++)
326 for (f=0;f<n_frames;f++)
327 pof_cfread(&anim_angs[f][m],1,sizeof(vms_angvec),model_buf);
329 robot_set_angles(r,pm,anim_angs);
333 pof_cfseek(model_buf,len,SEEK_CUR);
338 case ID_TXTR: { //Texture filename list
342 //mprintf(0,"Got chunk TXTR, len=%d\n",len);
344 n = pof_read_short(model_buf);
345 //mprintf(0," num textures = %d\n",n);
347 pof_read_string(name_buf,128,model_buf);
348 //mprintf(0,"<%s>\n",name_buf);
354 case ID_IDTA: //Interpreter data
355 //mprintf(0,"Got chunk IDTA, len=%d\n",len);
357 pm->model_data = d_malloc(len);
358 pm->model_data_size = len;
360 pof_cfread(pm->model_data,1,len,model_buf);
365 //mprintf(0,"Unknown chunk <%c%c%c%c>, len = %d\n",id,id>>8,id>>16,id>>24,len);
366 pof_cfseek(model_buf,len,SEEK_CUR);
370 if ( version >= 8 ) // Version 8 needs 4-byte alignment!!!
371 pof_cfseek(model_buf,next_chunk,SEEK_SET);
374 // for (i=0;i<pm->n_models;i++)
375 // pm->submodel_ptrs[i] += (int) pm->model_data;
377 if ( FindArg( "-bspgen" )) {
378 char *p = strchr( filename, '.' );
384 printf( " %s.3ds\n", filename );
393 //reads the gun information for a model
394 //fills in arrays gun_points & gun_dirs, returns the number of guns read
395 int read_model_guns(char *filename,vms_vector *gun_points, vms_vector *gun_dirs, int *gun_submodels)
403 model_buf = (ubyte *)d_malloc( MODEL_BUF_SIZE * sizeof(ubyte) );
405 Error("Can't allocate space to read model %s\n", filename);
407 if ((ifile=cfopen(filename,"rb"))==NULL)
408 Error("Can't open file <%s>",filename);
410 Assert(ifile->size <= MODEL_BUF_SIZE);
413 Pof_file_end = cfread(model_buf, 1, ifile->size, ifile);
416 id = pof_read_int(model_buf);
418 if (id!=0x4f505350) /* 'OPSP' */
419 Error("Bad ID in model file <%s>",filename);
421 version = pof_read_short(model_buf);
423 Assert(version >= 7); //must be 7 or higher for this data
425 if (version < PM_COMPATIBLE_VERSION || version > PM_OBJFILE_VERSION)
426 Error("Bad version (%d) in model file <%s>",version,filename);
428 while (new_pof_read_int(id,model_buf) == 1) {
430 //id = pof_read_int(model_buf);
431 len = pof_read_int(model_buf);
433 if (id == ID_GUNS) { //List of guns on this object
435 //mprintf(0,"Got chunk GUNS, len=%d\n",len);
439 n_guns = pof_read_int(model_buf);
441 for (i=0;i<n_guns;i++) {
444 id = pof_read_short(model_buf);
445 sm = pof_read_short(model_buf);
447 gun_submodels[id] = sm;
449 Error("Invalid gun submodel in file <%s>",filename);
450 pof_read_vecs(&gun_points[id],1,model_buf);
452 pof_read_vecs(&gun_dirs[id],1,model_buf);
457 pof_cfseek(model_buf,len,SEEK_CUR);
466 //free up a model, getting rid of all its memory
467 void free_model(polymodel *po)
469 d_free(po->model_data);
472 grs_bitmap *texture_list[MAX_POLYOBJ_TEXTURES];
473 bitmap_index texture_list_index[MAX_POLYOBJ_TEXTURES];
475 int Simple_model_threshhold_scale=5; //switch when this times radius far away
478 //draw a polygon model
480 void draw_polygon_model(vms_vector *pos,vms_matrix *orient,vms_angvec *anim_angles,int model_num,int flags,fix light,fix *glow_values,bitmap_index alt_textures[])
484 PA_DFX (int save_light);
486 Assert(model_num < N_polygon_models);
488 po=&Polygon_models[model_num];
490 //check if should use simple model
491 if (po->simpler_model ) //must have a simpler model
492 if (flags==0) //can't switch if this is debris
493 //!!if (!alt_textures) { //alternate textures might not match
494 //alt textures might not match, but in the one case we're using this
495 //for on 11/14/94, they do match. So we leave it in.
500 depth = g3_calc_point_depth(pos); //gets 3d depth
502 while (po->simpler_model && depth > cnt++ * Simple_model_threshhold_scale * po->rad)
503 po = &Polygon_models[po->simpler_model-1];
508 for (i=0;i<po->n_textures;i++) {
509 texture_list_index[i] = alt_textures[i];
510 texture_list[i] = &GameBitmaps[alt_textures[i].index];
513 texture_list[i]->bm_handle = texture_list_index[i].index;
519 for (i=0;i<po->n_textures;i++) {
520 texture_list_index[i] = ObjBitmaps[ObjBitmapPtrs[po->first_texture+i]];
521 texture_list[i] = &GameBitmaps[ObjBitmaps[ObjBitmapPtrs[po->first_texture+i]].index];
524 texture_list[i]->bm_handle = texture_list_index[i].index;
529 #ifdef PIGGY_USE_PAGING
530 // Make sure the textures for this object are paged in...
531 piggy_page_flushed = 0;
532 for (i=0;i<po->n_textures;i++)
533 PIGGY_PAGE_IN( texture_list_index[i] );
534 // Hmmm... cache got flushed in the middle of paging all these in,
535 // so we need to reread them all in.
536 if (piggy_page_flushed) {
537 piggy_page_flushed = 0;
538 for (i=0;i<po->n_textures;i++)
539 PIGGY_PAGE_IN( texture_list_index[i] );
541 // Make sure that they can all fit in memory.
542 Assert( piggy_page_flushed == 0 );
545 g3_start_instance_matrix(pos,orient);
547 g3_set_interp_points(robot_points);
550 _3dfx_rendering_poly_obj = 1;
552 PA_DFX(save_light = Lighting_on);
553 PA_DFX(Lighting_on = 0);
555 if (flags == 0) //draw entire object
557 g3_draw_polygon_model(po->model_data,texture_list,anim_angles,light,glow_values);
562 for (i=0;flags;flags>>=1,i++)
566 Assert(i < po->n_models);
568 //if submodel, rotate around its center point, not pivot point
570 vm_vec_avg(&ofs,&po->submodel_mins[i],&po->submodel_maxs[i]);
572 g3_start_instance_matrix(&ofs,NULL);
574 g3_draw_polygon_model(&po->model_data[po->submodel_ptrs[i]],texture_list,anim_angles,light,glow_values);
583 _3dfx_rendering_poly_obj = 0;
586 PA_DFX (Lighting_on = save_light);
591 void free_polygon_models()
595 for (i=0;i<N_polygon_models;i++) {
596 free_model(&Polygon_models[i]);
601 void polyobj_find_min_max(polymodel *pm)
607 vms_vector *big_mn,*big_mx;
612 for (m=0;m<pm->n_models;m++) {
613 vms_vector *mn,*mx,*ofs;
615 mn = &pm->submodel_mins[m];
616 mx = &pm->submodel_maxs[m];
617 ofs= &pm->submodel_offsets[m];
619 data = (ushort *)&pm->model_data[pm->submodel_ptrs[m]];
623 Assert(type == 7 || type == 1);
628 data+=2; //skip start & pad
630 vp = (vms_vector *) data;
632 *mn = *mx = *vp++; nverts--;
635 *big_mn = *big_mx = *mn;
638 if (vp->x > mx->x) mx->x = vp->x;
639 if (vp->y > mx->y) mx->y = vp->y;
640 if (vp->z > mx->z) mx->z = vp->z;
642 if (vp->x < mn->x) mn->x = vp->x;
643 if (vp->y < mn->y) mn->y = vp->y;
644 if (vp->z < mn->z) mn->z = vp->z;
646 if (vp->x+ofs->x > big_mx->x) big_mx->x = vp->x+ofs->x;
647 if (vp->y+ofs->y > big_mx->y) big_mx->y = vp->y+ofs->y;
648 if (vp->z+ofs->z > big_mx->z) big_mx->z = vp->z+ofs->z;
650 if (vp->x+ofs->x < big_mn->x) big_mn->x = vp->x+ofs->x;
651 if (vp->y+ofs->y < big_mn->y) big_mn->y = vp->y+ofs->y;
652 if (vp->z+ofs->z < big_mn->z) big_mn->z = vp->z+ofs->z;
657 // printf("Submodel %d: (%8x,%8x) (%8x,%8x) (%8x,%8x)\n",m,mn->x,mx->x,mn->y,mx->y,mn->z,mx->z);
660 // printf("Whole model: (%8x,%8x) (%8x,%8x) (%8x,%8x)\n",big_mn->x,big_mx->x,big_mn->y,big_mx->y,big_mn->z,big_mx->z);
664 extern short highest_texture_num; //from the 3d
666 char Pof_names[MAX_POLYGON_MODELS][FILENAME_LEN];
668 //returns the number of this model
670 int load_polygon_model(char *filename,int n_textures,int first_texture,robot_info *r)
672 int load_polygon_model(char *filename,int n_textures,grs_bitmap ***textures)
679 Assert(N_polygon_models < MAX_POLYGON_MODELS);
680 Assert(n_textures < MAX_POLYOBJ_TEXTURES);
682 // MK was real tired of those useless, slow mprintfs...
683 if (N_polygon_models > MAX_POLYGON_MODELS - 10)
684 mprintf(( 0, "Used %d/%d polygon model slots\n", N_polygon_models+1, MAX_POLYGON_MODELS ));
686 Assert(strlen(filename) <= 12);
687 strcpy(Pof_names[N_polygon_models],filename);
689 read_model_file(&Polygon_models[N_polygon_models],filename,r);
691 polyobj_find_min_max(&Polygon_models[N_polygon_models]);
693 g3_init_polygon_model(Polygon_models[N_polygon_models].model_data);
695 if (highest_texture_num+1 != n_textures)
696 Error("Model <%s> references %d textures but specifies %d.",filename,highest_texture_num+1,n_textures);
698 Polygon_models[N_polygon_models].n_textures = n_textures;
699 Polygon_models[N_polygon_models].first_texture = first_texture;
700 Polygon_models[N_polygon_models].simpler_model = 0;
702 // Assert(polygon_models[N_polygon_models]!=NULL);
706 return N_polygon_models-1;
711 void init_polygon_models()
713 N_polygon_models = 0;
715 atexit((void (*)())free_polygon_models);
719 //compare against this size when figuring how far to place eye for picture
720 #define BASE_MODEL_SIZE 0x28000
722 #define DEFAULT_VIEW_DIST 0x60000
724 //draws the given model in the current canvas. The distance is set to
725 //more-or-less fill the canvas. Note that this routine actually renders
726 //into an off-screen canvas that it creates, then copies to the current
728 void draw_model_picture(int mn,vms_angvec *orient_angles)
730 vms_vector temp_pos=ZERO_VECTOR;
731 vms_matrix temp_orient = IDENTITY_MATRIX;
732 grs_canvas *save_canv = grd_curcanv,*temp_canv;
734 Assert(mn>=0 && mn<N_polygon_models);
736 temp_canv = gr_create_canvas(save_canv->cv_bitmap.bm_w,save_canv->cv_bitmap.bm_h);
737 gr_set_current_canvas(temp_canv);
738 gr_clear_canvas( BM_XRGB(0,0,0) );
741 g3_set_view_matrix(&temp_pos,&temp_orient,0x9000);
743 if (Polygon_models[mn].rad != 0)
744 temp_pos.z = fixmuldiv(DEFAULT_VIEW_DIST,Polygon_models[mn].rad,BASE_MODEL_SIZE);
746 temp_pos.z = DEFAULT_VIEW_DIST;
748 vm_angles_2_matrix(&temp_orient, orient_angles);
750 PA_DFX(save_light = Lighting_on);
751 PA_DFX(Lighting_on = 0);
752 draw_polygon_model(&temp_pos,&temp_orient,NULL,mn,0,f1_0,NULL,NULL);
753 PA_DFX (Lighting_on = save_light);
755 gr_set_current_canvas(save_canv);
757 gr_bitmap(0,0,&temp_canv->cv_bitmap);
759 gr_free_canvas(temp_canv);
764 * reads a polymodel structure from a CFILE
766 extern void polymodel_read(polymodel *pm, CFILE *fp)
770 pm->n_models = cfile_read_int(fp);
771 pm->model_data_size = cfile_read_int(fp);
772 pm->model_data = (ubyte *) cfile_read_int(fp);
773 for (i = 0; i < MAX_SUBMODELS; i++)
774 pm->submodel_ptrs[i] = cfile_read_int(fp);
775 for (i = 0; i < MAX_SUBMODELS; i++)
776 cfile_read_vector(&(pm->submodel_offsets[i]), fp);
777 for (i = 0; i < MAX_SUBMODELS; i++)
778 cfile_read_vector(&(pm->submodel_norms[i]), fp);
779 for (i = 0; i < MAX_SUBMODELS; i++)
780 cfile_read_vector(&(pm->submodel_pnts[i]), fp);
781 for (i = 0; i < MAX_SUBMODELS; i++)
782 pm->submodel_rads[i] = cfile_read_fix(fp);
783 cfread(pm->submodel_parents, MAX_SUBMODELS, 1, fp);
784 for (i = 0; i < MAX_SUBMODELS; i++)
785 cfile_read_vector(&(pm->submodel_mins[i]), fp);
786 for (i = 0; i < MAX_SUBMODELS; i++)
787 cfile_read_vector(&(pm->submodel_maxs[i]), fp);
788 cfile_read_vector(&(pm->mins), fp);
789 cfile_read_vector(&(pm->maxs), fp);
790 pm->rad = cfile_read_fix(fp);
791 pm->n_textures = cfile_read_byte(fp);
792 pm->first_texture = cfile_read_short(fp);
793 pm->simpler_model = cfile_read_byte(fp);
797 * reads n polymodel structs from a CFILE
799 extern int polymodel_read_n(polymodel *pm, int n, CFILE *fp)
803 for (i = 0; i < n; i++) {
804 pm[i].n_models = cfile_read_int(fp);
805 pm[i].model_data_size = cfile_read_int(fp);
806 pm[i].model_data = (ubyte *) cfile_read_int(fp);
807 for (j = 0; j < MAX_SUBMODELS; j++)
808 pm[i].submodel_ptrs[j] = cfile_read_int(fp);
809 for (j = 0; j < MAX_SUBMODELS; j++)
810 cfile_read_vector(&(pm[i].submodel_offsets[j]), fp);
811 for (j = 0; j < MAX_SUBMODELS; j++)
812 cfile_read_vector(&(pm[i].submodel_norms[j]), fp);
813 for (j = 0; j < MAX_SUBMODELS; j++)
814 cfile_read_vector(&(pm[i].submodel_pnts[j]), fp);
815 for (j = 0; j < MAX_SUBMODELS; j++)
816 pm[i].submodel_rads[j] = cfile_read_fix(fp);
817 cfread(pm[i].submodel_parents, MAX_SUBMODELS, 1, fp);
818 for (j = 0; j < MAX_SUBMODELS; j++)
819 cfile_read_vector(&(pm[i].submodel_mins[j]), fp);
820 for (j = 0; j < MAX_SUBMODELS; j++)
821 cfile_read_vector(&(pm[i].submodel_maxs[j]), fp);
822 cfile_read_vector(&(pm[i].mins), fp);
823 cfile_read_vector(&(pm[i].maxs), fp);
824 pm[i].rad = cfile_read_fix(fp);
825 pm[i].n_textures = cfile_read_byte(fp);
826 pm[i].first_texture = cfile_read_short(fp);
827 pm[i].simpler_model = cfile_read_byte(fp);