model_sprite.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // models.c -- model loading and caching
  21
  22 // models are the only shared resource between a client and server running
  23 // on the same machine.
  24
  25 #include "quakedef.h"
  26
  27 cvar_t r_mipsprites = {CVAR_SAVE, "r_mipsprites", "1"};
  28
  29 /*
  30 ===============
  31 Mod_SpriteInit
  32 ===============
  33 */
  34 void Mod_SpriteInit (void)
  35 {
  36         Cvar_RegisterVariable(&r_mipsprites);
  37 }
  38
  39 static void Mod_Sprite_StripExtension(char *in, char *out)
  40 {
  41         char *end;
  42         end = in + strlen(in);
  43         if ((end - in) >= 6)
  44                 if (strcmp(end - 6, ".spr32") == 0)
  45                         end -= 6;
  46         if ((end - in) >= 4)
  47                 if (strcmp(end - 4, ".spr") == 0)
  48                         end -= 4;
  49         while (in < end)
  50                 *out++ = *in++;
  51         *out++ = 0;
  52 }
  53
  54 static void Mod_Sprite_SharedSetup(qbyte *datapointer, int version, int *palette)
  55 {
  56         int                                     i, j, k, groupframes, realframes, x, y, origin[2], width, height;
  57         dspriteframetype_t      *pinframetype;
  58         dspriteframe_t          *pinframe;
  59         dspritegroup_t          *pingroup;
  60         dspriteinterval_t       *pinintervals;
  61         float                           modelradius, interval;
  62         char                            tempname[MAX_QPATH], name[MAX_QPATH];
  63         qbyte                           *pixbuf;
  64         void                            *startframes;
  65         modelradius = 0;
  66
  67         Mod_Sprite_StripExtension(loadmodel->name, tempname);
  68
  69         if (loadmodel->numframes < 1)
  70                 Host_Error ("Mod_Sprite_SharedSetup: Invalid # of frames: %d\n", loadmodel->numframes);
  71
  72         loadmodel->type = mod_sprite;
  73         loadmodel->flags = EF_FULLBRIGHT;
  74
  75         // LordHavoc: hack to allow sprites to be non-fullbright
  76         for (i = 0;i < MAX_QPATH && loadmodel->name[i];i++)
  77         {
  78                 if (loadmodel->name[i] == '!')
  79                 {
  80                         loadmodel->flags &= ~EF_FULLBRIGHT;
  81                         break;
  82                 }
  83         }
  84
  85         // LordHavoc: 32bit textures
  86         if (version != SPRITE_VERSION && version != SPRITE32_VERSION && version != SPRITEHL_VERSION)
  87                 Host_Error("Mod_Sprite_SharedSetup: unsupported version %i, only %i (quake), %i (HalfLife), and %i (sprite32) supported", version, SPRITE_VERSION, SPRITEHL_VERSION, SPRITE32_VERSION);
  88
  89 //
  90 // load the frames
  91 //
  92         startframes = datapointer;
  93         realframes = 0;
  94         for (i = 0;i < loadmodel->numframes;i++)
  95         {
  96                 pinframetype = (dspriteframetype_t *)datapointer;
  97                 datapointer += sizeof(dspriteframetype_t);
  98
  99                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 100                         groupframes = 1;
 101                 else
 102                 {
 103                         pingroup = (dspritegroup_t *)datapointer;
 104                         datapointer += sizeof(dspritegroup_t);
 105
 106                         groupframes = LittleLong(pingroup->numframes);
 107
 108                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 109                 }
 110
 111                 for (j = 0;j < groupframes;j++)
 112                 {
 113                         pinframe = (dspriteframe_t *)datapointer;
 114                         if (version == SPRITE32_VERSION)
 115                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height) * 4;
 116                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 117                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height);
 118                 }
 119                 realframes += groupframes;
 120         }
 121
 122         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 123         loadmodel->sprdata_frames = Mem_Alloc(loadmodel->mempool, sizeof(mspriteframe_t) * realframes);
 124
 125         datapointer = startframes;
 126         realframes = 0;
 127         for (i = 0;i < loadmodel->numframes;i++)
 128         {
 129                 pinframetype = (dspriteframetype_t *)datapointer;
 130                 datapointer += sizeof(dspriteframetype_t);
 131
 132                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 133                 {
 134                         groupframes = 1;
 135                         interval = 0.1f;
 136                 }
 137                 else
 138                 {
 139                         pingroup = (dspritegroup_t *)datapointer;
 140                         datapointer += sizeof(dspritegroup_t);
 141
 142                         groupframes = LittleLong(pingroup->numframes);
 143
 144                         pinintervals = (dspriteinterval_t *)datapointer;
 145                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 146
 147                         interval = LittleFloat(pinintervals[0].interval);
 148                         if (interval < 0.01f)
 149                                 Host_Error("Mod_Sprite_SharedSetup: invalid interval");
 150                 }
 151
 152                 sprintf(loadmodel->animscenes[i].name, "frame %i", i);
 153                 loadmodel->animscenes[i].firstframe = realframes;
 154                 loadmodel->animscenes[i].framecount = groupframes;
 155                 loadmodel->animscenes[i].framerate = 1.0f / interval;
 156                 loadmodel->animscenes[i].loop = true;
 157
 158                 for (j = 0;j < groupframes;j++)
 159                 {
 160                         pinframe = (dspriteframe_t *)datapointer;
 161                         datapointer += sizeof(dspriteframe_t);
 162
 163                         origin[0] = LittleLong (pinframe->origin[0]);
 164                         origin[1] = LittleLong (pinframe->origin[1]);
 165                         width = LittleLong (pinframe->width);
 166                         height = LittleLong (pinframe->height);
 167
 168                         loadmodel->sprdata_frames[realframes].left = origin[0];
 169                         loadmodel->sprdata_frames[realframes].right = origin[0] + width;
 170                         loadmodel->sprdata_frames[realframes].up = origin[1];
 171                         loadmodel->sprdata_frames[realframes].down = origin[1] - height;
 172
 173                         x = max(loadmodel->sprdata_frames[realframes].left * loadmodel->sprdata_frames[realframes].left, loadmodel->sprdata_frames[realframes].right * loadmodel->sprdata_frames[realframes].right);
 174                         y = max(loadmodel->sprdata_frames[realframes].up * loadmodel->sprdata_frames[realframes].up, loadmodel->sprdata_frames[realframes].down * loadmodel->sprdata_frames[realframes].down);
 175                         if (modelradius < x + y)
 176                                 modelradius = x + y;
 177
 178                         if (width > 0 && height > 0)
 179                         {
 180                                 if (groupframes > 1)
 181                                         sprintf (name, "%s_%i_%i", tempname, i, j);
 182                                 else
 183                                         sprintf (name, "%s_%i", tempname, i);
 184                                 loadmodel->sprdata_frames[realframes].texture = loadtextureimagewithmask(loadmodel->texturepool, name, 0, 0, false, r_mipsprites.integer, true);
 185                                 loadmodel->sprdata_frames[realframes].fogtexture = image_masktex;
 186
 187                                 if (!loadmodel->sprdata_frames[realframes].texture)
 188                                 {
 189                                         pixbuf = Mem_Alloc(tempmempool, width*height*4);
 190                                         if (version == SPRITE32_VERSION)
 191                                                 memcpy(pixbuf, datapointer, width*height*4);
 192                                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 193                                                 Image_Copy8bitRGBA(datapointer, pixbuf, width*height, palette);
 194
 195                                         loadmodel->sprdata_frames[realframes].texture = R_LoadTexture (loadmodel->texturepool, name, width, height, pixbuf, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_PRECACHE);
 196
 197                                         // make fog version (just alpha)
 198                                         for (k = 0;k < width*height;k++)
 199                                         {
 200                                                 pixbuf[k*4+0] = 255;
 201                                                 pixbuf[k*4+1] = 255;
 202                                                 pixbuf[k*4+2] = 255;
 203                                         }
 204                                         if (groupframes > 1)
 205                                                 sprintf (name, "%s_%i_%ifog", tempname, i, j);
 206                                         else
 207                                                 sprintf (name, "%s_%ifog", tempname, i);
 208                                         loadmodel->sprdata_frames[realframes].fogtexture = R_LoadTexture (loadmodel->texturepool, name, width, height, pixbuf, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_PRECACHE);
 209
 210                                         Mem_Free(pixbuf);
 211                                 }
 212                         }
 213
 214                         if (version == SPRITE32_VERSION)
 215                                 datapointer += width * height * 4;
 216                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 217                                 datapointer += width * height;
 218                         realframes++;
 219                 }
 220         }
 221
 222         modelradius = sqrt(modelradius);
 223         for (i = 0;i < 3;i++)
 224         {
 225                 loadmodel->normalmins[i] = loadmodel->yawmins[i] = loadmodel->rotatedmins[i] = -modelradius;
 226                 loadmodel->normalmaxs[i] = loadmodel->yawmaxs[i] = loadmodel->rotatedmaxs[i] = modelradius;
 227         }
 228         loadmodel->radius = modelradius;
 229         loadmodel->radius2 = modelradius * modelradius;
 230 }
 231
 232 /*
 233 =================
 234 Mod_LoadSpriteModel
 235 =================
 236 */
 237 void Mod_LoadSpriteModel (model_t *mod, void *buffer)
 238 {
 239         int version, i, rendermode;
 240         qbyte palette[256][4], *in;
 241         dsprite_t *pinqsprite;
 242         dspritehl_t *pinhlsprite;
 243         qbyte *datapointer;
 244
 245         datapointer = buffer;
 246
 247         loadmodel->Draw = R_DrawSpriteModel;
 248         loadmodel->DrawSky = NULL;
 249         loadmodel->DrawFakeShadow = NULL;
 250
 251         version = LittleLong(((dsprite_t *)buffer)->version);
 252         if (version == SPRITE_VERSION || SPRITE32_VERSION)
 253         {
 254                 pinqsprite = (dsprite_t *)datapointer;
 255                 datapointer += sizeof(dsprite_t);
 256
 257                 loadmodel->numframes = LittleLong (pinqsprite->numframes);
 258                 loadmodel->sprnum_type = LittleLong (pinqsprite->type);
 259                 loadmodel->synctype = LittleLong (pinqsprite->synctype);
 260
 261                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinqsprite->version), d_8to24table);
 262         }
 263         else if (version == SPRITEHL_VERSION)
 264         {
 265                 pinhlsprite = (dspritehl_t *)datapointer;
 266                 datapointer += sizeof(dspritehl_t);
 267
 268                 loadmodel->numframes = LittleLong (pinhlsprite->numframes);
 269                 loadmodel->sprnum_type = LittleLong (pinhlsprite->type);
 270                 loadmodel->synctype = LittleLong (pinhlsprite->synctype);
 271                 rendermode = pinhlsprite->rendermode;
 272
 273                 in = datapointer;
 274                 datapointer += 2;
 275                 i = in[0] + in[1] * 256;
 276                 if (i != 256)
 277                         Host_Error ("Mod_LoadHLSprite: unexpected number of palette colors %i (should be 256)", i);
 278                 in = datapointer;
 279                 datapointer += 768;
 280                 switch(rendermode)
 281                 {
 282                 case SPRHL_NORMAL:
 283                         for (i = 0;i < 255;i++)
 284                         {
 285                                 palette[i][0] = *in++;
 286                                 palette[i][1] = *in++;
 287                                 palette[i][2] = *in++;
 288                                 palette[i][3] = 255;
 289                         }
 290                         palette[255][0] = palette[255][1] = palette[255][2] = palette[255][3] = 0;
 291                         break;
 292                 case SPRHL_ADDITIVE:
 293                         for (i = 0;i < 256;i++)
 294                         {
 295                                 palette[i][0] = *in++;
 296                                 palette[i][1] = *in++;
 297                                 palette[i][2] = *in++;
 298                                 palette[i][3] = 255;
 299                         }
 300                         loadmodel->flags |= EF_ADDITIVE;
 301                         break;
 302                 case SPRHL_INDEXALPHA:
 303                         for (i = 0;i < 256;i++)
 304                         {
 305                                 palette[i][0] = 255;
 306                                 palette[i][1] = 255;
 307                                 palette[i][2] = 255;
 308                                 palette[i][3] = i;
 309                                 in += 3;
 310                         }
 311                         break;
 312                 case SPRHL_ALPHATEST:
 313                         for (i = 0;i < 255;i++)
 314                         {
 315                                 palette[i][0] = *in++;
 316                                 palette[i][1] = *in++;
 317                                 palette[i][2] = *in++;
 318                                 palette[i][3] = 255;
 319                         }
 320                         palette[0][0] = palette[0][1] = palette[0][2] = palette[0][3] = 0;
 321                         break;
 322                 default:
 323                         Host_Error("Mod_LoadHLSprite: unknown texFormat (%i, should be 0, 1, 2, or 3)\n", i);
 324                         return;
 325                 }
 326
 327                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinhlsprite->version), (int *)(&palette[0][0]));
 328         }
 329         else
 330                 Host_Error ("Mod_LoadSpriteModel: %s has wrong version number (%i should be 1 (quake) or 32 (sprite32) or 2 (halflife)", loadmodel->name, version);
 331 }
 332