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 #include "image.h"
  27
  28 cvar_t r_mipsprites = {CVAR_SAVE, "r_mipsprites", "1"};
  29
  30 /*
  31 ===============
  32 Mod_SpriteInit
  33 ===============
  34 */
  35 void Mod_SpriteInit (void)
  36 {
  37         Cvar_RegisterVariable(&r_mipsprites);
  38 }
  39
  40 static void Mod_Sprite_StripExtension(char *in, char *out)
  41 {
  42         char *end;
  43         end = in + strlen(in);
  44         if ((end - in) >= 6)
  45                 if (strcmp(end - 6, ".spr32") == 0)
  46                         end -= 6;
  47         if ((end - in) >= 4)
  48                 if (strcmp(end - 4, ".spr") == 0)
  49                         end -= 4;
  50         while (in < end)
  51                 *out++ = *in++;
  52         *out++ = 0;
  53 }
  54
  55 static void Mod_Sprite_SharedSetup(qbyte *datapointer, int version, int *palette)
  56 {
  57         int                                     i, j, k, groupframes, realframes, x, y, origin[2], width, height;
  58         dspriteframetype_t      *pinframetype;
  59         dspriteframe_t          *pinframe;
  60         dspritegroup_t          *pingroup;
  61         dspriteinterval_t       *pinintervals;
  62         float                           modelradius, interval;
  63         char                            tempname[MAX_QPATH], name[MAX_QPATH];
  64         qbyte                           *pixbuf;
  65         void                            *startframes;
  66         modelradius = 0;
  67
  68         Mod_Sprite_StripExtension(loadmodel->name, tempname);
  69
  70         if (loadmodel->numframes < 1)
  71                 Host_Error ("Mod_Sprite_SharedSetup: Invalid # of frames: %d\n", loadmodel->numframes);
  72
  73         loadmodel->type = mod_sprite;
  74         loadmodel->flags = EF_FULLBRIGHT;
  75
  76         // LordHavoc: hack to allow sprites to be non-fullbright
  77         for (i = 0;i < MAX_QPATH && loadmodel->name[i];i++)
  78         {
  79                 if (loadmodel->name[i] == '!')
  80                 {
  81                         loadmodel->flags &= ~EF_FULLBRIGHT;
  82                         break;
  83                 }
  84         }
  85
  86         // LordHavoc: 32bit textures
  87         if (version != SPRITE_VERSION && version != SPRITE32_VERSION && version != SPRITEHL_VERSION)
  88                 Host_Error("Mod_Sprite_SharedSetup: unsupported version %i, only %i (quake), %i (HalfLife), and %i (sprite32) supported", version, SPRITE_VERSION, SPRITEHL_VERSION, SPRITE32_VERSION);
  89
  90 //
  91 // load the frames
  92 //
  93         startframes = datapointer;
  94         realframes = 0;
  95         for (i = 0;i < loadmodel->numframes;i++)
  96         {
  97                 pinframetype = (dspriteframetype_t *)datapointer;
  98                 datapointer += sizeof(dspriteframetype_t);
  99
 100                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 101                         groupframes = 1;
 102                 else
 103                 {
 104                         pingroup = (dspritegroup_t *)datapointer;
 105                         datapointer += sizeof(dspritegroup_t);
 106
 107                         groupframes = LittleLong(pingroup->numframes);
 108
 109                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 110                 }
 111
 112                 for (j = 0;j < groupframes;j++)
 113                 {
 114                         pinframe = (dspriteframe_t *)datapointer;
 115                         if (version == SPRITE32_VERSION)
 116                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height) * 4;
 117                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 118                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height);
 119                 }
 120                 realframes += groupframes;
 121         }
 122
 123         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 124         loadmodel->sprdata_frames = Mem_Alloc(loadmodel->mempool, sizeof(mspriteframe_t) * realframes);
 125
 126         datapointer = startframes;
 127         realframes = 0;
 128         for (i = 0;i < loadmodel->numframes;i++)
 129         {
 130                 pinframetype = (dspriteframetype_t *)datapointer;
 131                 datapointer += sizeof(dspriteframetype_t);
 132
 133                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 134                 {
 135                         groupframes = 1;
 136                         interval = 0.1f;
 137                 }
 138                 else
 139                 {
 140                         pingroup = (dspritegroup_t *)datapointer;
 141                         datapointer += sizeof(dspritegroup_t);
 142
 143                         groupframes = LittleLong(pingroup->numframes);
 144
 145                         pinintervals = (dspriteinterval_t *)datapointer;
 146                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 147
 148                         interval = LittleFloat(pinintervals[0].interval);
 149                         if (interval < 0.01f)
 150                                 Host_Error("Mod_Sprite_SharedSetup: invalid interval");
 151                 }
 152
 153                 sprintf(loadmodel->animscenes[i].name, "frame %i", i);
 154                 loadmodel->animscenes[i].firstframe = realframes;
 155                 loadmodel->animscenes[i].framecount = groupframes;
 156                 loadmodel->animscenes[i].framerate = 1.0f / interval;
 157                 loadmodel->animscenes[i].loop = true;
 158
 159                 for (j = 0;j < groupframes;j++)
 160                 {
 161                         pinframe = (dspriteframe_t *)datapointer;
 162                         datapointer += sizeof(dspriteframe_t);
 163
 164                         origin[0] = LittleLong (pinframe->origin[0]);
 165                         origin[1] = LittleLong (pinframe->origin[1]);
 166                         width = LittleLong (pinframe->width);
 167                         height = LittleLong (pinframe->height);
 168
 169                         loadmodel->sprdata_frames[realframes].left = origin[0];
 170                         loadmodel->sprdata_frames[realframes].right = origin[0] + width;
 171                         loadmodel->sprdata_frames[realframes].up = origin[1];
 172                         loadmodel->sprdata_frames[realframes].down = origin[1] - height;
 173
 174                         x = max(loadmodel->sprdata_frames[realframes].left * loadmodel->sprdata_frames[realframes].left, loadmodel->sprdata_frames[realframes].right * loadmodel->sprdata_frames[realframes].right);
 175                         y = max(loadmodel->sprdata_frames[realframes].up * loadmodel->sprdata_frames[realframes].up, loadmodel->sprdata_frames[realframes].down * loadmodel->sprdata_frames[realframes].down);
 176                         if (modelradius < x + y)
 177                                 modelradius = x + y;
 178
 179                         if (width > 0 && height > 0)
 180                         {
 181                                 if (groupframes > 1)
 182                                         sprintf (name, "%s_%i_%i", tempname, i, j);
 183                                 else
 184                                         sprintf (name, "%s_%i", tempname, i);
 185                                 loadmodel->sprdata_frames[realframes].texture = loadtextureimagewithmask(loadmodel->texturepool, name, 0, 0, false, (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE);
 186                                 loadmodel->sprdata_frames[realframes].fogtexture = image_masktex;
 187
 188                                 if (!loadmodel->sprdata_frames[realframes].texture)
 189                                 {
 190                                         pixbuf = Mem_Alloc(tempmempool, width*height*4);
 191                                         if (version == SPRITE32_VERSION)
 192                                                 memcpy(pixbuf, datapointer, width*height*4);
 193                                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 194                                                 Image_Copy8bitRGBA(datapointer, pixbuf, width*height, palette);
 195
 196                                         loadmodel->sprdata_frames[realframes].texture = R_LoadTexture2D (loadmodel->texturepool, name, width, height, pixbuf, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_PRECACHE, NULL);
 197
 198                                         // make fog version (just alpha)
 199                                         for (k = 0;k < width*height;k++)
 200                                         {
 201                                                 pixbuf[k*4+0] = 255;
 202                                                 pixbuf[k*4+1] = 255;
 203                                                 pixbuf[k*4+2] = 255;
 204                                         }
 205                                         if (groupframes > 1)
 206                                                 sprintf (name, "%s_%i_%ifog", tempname, i, j);
 207                                         else
 208                                                 sprintf (name, "%s_%ifog", tempname, i);
 209                                         loadmodel->sprdata_frames[realframes].fogtexture = R_LoadTexture2D (loadmodel->texturepool, name, width, height, pixbuf, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_PRECACHE, NULL);
 210
 211                                         Mem_Free(pixbuf);
 212                                 }
 213                         }
 214
 215                         if (version == SPRITE32_VERSION)
 216                                 datapointer += width * height * 4;
 217                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 218                                 datapointer += width * height;
 219                         realframes++;
 220                 }
 221         }
 222
 223         modelradius = sqrt(modelradius);
 224         for (i = 0;i < 3;i++)
 225         {
 226                 loadmodel->normalmins[i] = loadmodel->yawmins[i] = loadmodel->rotatedmins[i] = -modelradius;
 227                 loadmodel->normalmaxs[i] = loadmodel->yawmaxs[i] = loadmodel->rotatedmaxs[i] = modelradius;
 228         }
 229         loadmodel->radius = modelradius;
 230         loadmodel->radius2 = modelradius * modelradius;
 231 }
 232
 233 /*
 234 =================
 235 Mod_LoadSpriteModel
 236 =================
 237 */
 238 extern void R_Model_Sprite_Draw(entity_render_t *ent);
 239 void Mod_LoadSpriteModel (model_t *mod, void *buffer)
 240 {
 241         int version, i, rendermode;
 242         qbyte palette[256][4], *in;
 243         dsprite_t *pinqsprite;
 244         dspritehl_t *pinhlsprite;
 245         qbyte *datapointer;
 246
 247         datapointer = buffer;
 248
 249         loadmodel->DrawSky = NULL;
 250         loadmodel->Draw = R_Model_Sprite_Draw;
 251         loadmodel->DrawFakeShadow = NULL;
 252         loadmodel->DrawShadowVolume = NULL;
 253         loadmodel->DrawLight = NULL;
 254
 255         version = LittleLong(((dsprite_t *)buffer)->version);
 256         if (version == SPRITE_VERSION || SPRITE32_VERSION)
 257         {
 258                 pinqsprite = (dsprite_t *)datapointer;
 259                 datapointer += sizeof(dsprite_t);
 260
 261                 loadmodel->numframes = LittleLong (pinqsprite->numframes);
 262                 loadmodel->sprnum_type = LittleLong (pinqsprite->type);
 263                 loadmodel->synctype = LittleLong (pinqsprite->synctype);
 264
 265                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinqsprite->version), palette_complete);
 266         }
 267         else if (version == SPRITEHL_VERSION)
 268         {
 269                 pinhlsprite = (dspritehl_t *)datapointer;
 270                 datapointer += sizeof(dspritehl_t);
 271
 272                 loadmodel->numframes = LittleLong (pinhlsprite->numframes);
 273                 loadmodel->sprnum_type = LittleLong (pinhlsprite->type);
 274                 loadmodel->synctype = LittleLong (pinhlsprite->synctype);
 275                 rendermode = pinhlsprite->rendermode;
 276
 277                 in = datapointer;
 278                 datapointer += 2;
 279                 i = in[0] + in[1] * 256;
 280                 if (i != 256)
 281                         Host_Error ("Mod_LoadHLSprite: unexpected number of palette colors %i (should be 256)", i);
 282                 in = datapointer;
 283                 datapointer += 768;
 284                 switch(rendermode)
 285                 {
 286                 case SPRHL_NORMAL:
 287                         for (i = 0;i < 255;i++)
 288                         {
 289                                 palette[i][0] = *in++;
 290                                 palette[i][1] = *in++;
 291                                 palette[i][2] = *in++;
 292                                 palette[i][3] = 255;
 293                         }
 294                         palette[255][0] = palette[255][1] = palette[255][2] = palette[255][3] = 0;
 295                         break;
 296                 case SPRHL_ADDITIVE:
 297                         for (i = 0;i < 256;i++)
 298                         {
 299                                 palette[i][0] = *in++;
 300                                 palette[i][1] = *in++;
 301                                 palette[i][2] = *in++;
 302                                 palette[i][3] = 255;
 303                         }
 304                         loadmodel->flags |= EF_ADDITIVE;
 305                         break;
 306                 case SPRHL_INDEXALPHA:
 307                         for (i = 0;i < 256;i++)
 308                         {
 309                                 palette[i][0] = 255;
 310                                 palette[i][1] = 255;
 311                                 palette[i][2] = 255;
 312                                 palette[i][3] = i;
 313                                 in += 3;
 314                         }
 315                         break;
 316                 case SPRHL_ALPHATEST:
 317                         for (i = 0;i < 255;i++)
 318                         {
 319                                 palette[i][0] = *in++;
 320                                 palette[i][1] = *in++;
 321                                 palette[i][2] = *in++;
 322                                 palette[i][3] = 255;
 323                         }
 324                         palette[0][0] = palette[0][1] = palette[0][2] = palette[0][3] = 0;
 325                         break;
 326                 default:
 327                         Host_Error("Mod_LoadHLSprite: unknown texFormat (%i, should be 0, 1, 2, or 3)\n", i);
 328                         return;
 329                 }
 330
 331                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinhlsprite->version), (int *)(&palette[0][0]));
 332         }
 333         else
 334                 Host_Error ("Mod_LoadSpriteModel: %s has wrong version number (%i should be 1 (quake) or 32 (sprite32) or 2 (halflife)", loadmodel->name, version);
 335 }
 336