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 int alphaonlytable[4] = {255 | 0x80000000, 255 | 0x80000000, 255 | 0x80000000, 3};
  41 static void Mod_Sprite_SharedSetup(qbyte *datapointer, int version, int *palette, int *alphapalette)
  42 {
  43         int                                     i, j, groupframes, realframes, x, y, origin[2], width, height;
  44         dspriteframetype_t      *pinframetype;
  45         dspriteframe_t          *pinframe;
  46         dspritegroup_t          *pingroup;
  47         dspriteinterval_t       *pinintervals;
  48         float                           modelradius, interval;
  49         char                            name[MAX_QPATH], fogname[MAX_QPATH];
  50         qbyte                           *pixbuf;
  51         void                            *startframes;
  52         modelradius = 0;
  53
  54         if (loadmodel->numframes < 1)
  55                 Host_Error ("Mod_Sprite_SharedSetup: Invalid # of frames: %d\n", loadmodel->numframes);
  56
  57         loadmodel->type = mod_sprite;
  58         loadmodel->flags = EF_FULLBRIGHT;
  59
  60         // LordHavoc: hack to allow sprites to be non-fullbright
  61         for (i = 0;i < MAX_QPATH && loadmodel->name[i];i++)
  62         {
  63                 if (loadmodel->name[i] == '!')
  64                 {
  65                         loadmodel->flags &= ~EF_FULLBRIGHT;
  66                         break;
  67                 }
  68         }
  69
  70         // LordHavoc: 32bit textures
  71         if (version != SPRITE_VERSION && version != SPRITE32_VERSION && version != SPRITEHL_VERSION)
  72                 Host_Error("Mod_Sprite_SharedSetup: unsupported version %i, only %i (quake), %i (HalfLife), and %i (sprite32) supported", version, SPRITE_VERSION, SPRITEHL_VERSION, SPRITE32_VERSION);
  73
  74 //
  75 // load the frames
  76 //
  77         startframes = datapointer;
  78         realframes = 0;
  79         for (i = 0;i < loadmodel->numframes;i++)
  80         {
  81                 pinframetype = (dspriteframetype_t *)datapointer;
  82                 datapointer += sizeof(dspriteframetype_t);
  83
  84                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
  85                         groupframes = 1;
  86                 else
  87                 {
  88                         pingroup = (dspritegroup_t *)datapointer;
  89                         datapointer += sizeof(dspritegroup_t);
  90
  91                         groupframes = LittleLong(pingroup->numframes);
  92
  93                         datapointer += sizeof(dspriteinterval_t) * groupframes;
  94                 }
  95
  96                 for (j = 0;j < groupframes;j++)
  97                 {
  98                         pinframe = (dspriteframe_t *)datapointer;
  99                         if (version == SPRITE32_VERSION)
 100                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height) * 4;
 101                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 102                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height);
 103                 }
 104                 realframes += groupframes;
 105         }
 106
 107         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 108         loadmodel->sprite.sprdata_frames = Mem_Alloc(loadmodel->mempool, sizeof(mspriteframe_t) * realframes);
 109
 110         datapointer = startframes;
 111         realframes = 0;
 112         for (i = 0;i < loadmodel->numframes;i++)
 113         {
 114                 pinframetype = (dspriteframetype_t *)datapointer;
 115                 datapointer += sizeof(dspriteframetype_t);
 116
 117                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 118                 {
 119                         groupframes = 1;
 120                         interval = 0.1f;
 121                 }
 122                 else
 123                 {
 124                         pingroup = (dspritegroup_t *)datapointer;
 125                         datapointer += sizeof(dspritegroup_t);
 126
 127                         groupframes = LittleLong(pingroup->numframes);
 128
 129                         pinintervals = (dspriteinterval_t *)datapointer;
 130                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 131
 132                         interval = LittleFloat(pinintervals[0].interval);
 133                         if (interval < 0.01f)
 134                                 Host_Error("Mod_Sprite_SharedSetup: invalid interval");
 135                 }
 136
 137                 sprintf(loadmodel->animscenes[i].name, "frame %i", i);
 138                 loadmodel->animscenes[i].firstframe = realframes;
 139                 loadmodel->animscenes[i].framecount = groupframes;
 140                 loadmodel->animscenes[i].framerate = 1.0f / interval;
 141                 loadmodel->animscenes[i].loop = true;
 142
 143                 for (j = 0;j < groupframes;j++)
 144                 {
 145                         pinframe = (dspriteframe_t *)datapointer;
 146                         datapointer += sizeof(dspriteframe_t);
 147
 148                         origin[0] = LittleLong (pinframe->origin[0]);
 149                         origin[1] = LittleLong (pinframe->origin[1]);
 150                         width = LittleLong (pinframe->width);
 151                         height = LittleLong (pinframe->height);
 152
 153                         loadmodel->sprite.sprdata_frames[realframes].left = origin[0];
 154                         loadmodel->sprite.sprdata_frames[realframes].right = origin[0] + width;
 155                         loadmodel->sprite.sprdata_frames[realframes].up = origin[1];
 156                         loadmodel->sprite.sprdata_frames[realframes].down = origin[1] - height;
 157
 158                         x = max(loadmodel->sprite.sprdata_frames[realframes].left * loadmodel->sprite.sprdata_frames[realframes].left, loadmodel->sprite.sprdata_frames[realframes].right * loadmodel->sprite.sprdata_frames[realframes].right);
 159                         y = max(loadmodel->sprite.sprdata_frames[realframes].up * loadmodel->sprite.sprdata_frames[realframes].up, loadmodel->sprite.sprdata_frames[realframes].down * loadmodel->sprite.sprdata_frames[realframes].down);
 160                         if (modelradius < x + y)
 161                                 modelradius = x + y;
 162
 163                         if (width > 0 && height > 0)
 164                         {
 165                                 if (groupframes > 1)
 166                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 167                                 else
 168                                         sprintf (name, "%s_%i", loadmodel->name, i);
 169                                 loadmodel->sprite.sprdata_frames[realframes].texture = loadtextureimagewithmask(loadmodel->texturepool, name, 0, 0, false, (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_CLAMP | TEXF_PRECACHE);
 170                                 loadmodel->sprite.sprdata_frames[realframes].fogtexture = image_masktex;
 171
 172                                 if (!loadmodel->sprite.sprdata_frames[realframes].texture)
 173                                 {
 174                                         if (groupframes > 1)
 175                                                 sprintf (fogname, "%s_%i_%ifog", loadmodel->name, i, j);
 176                                         else
 177                                                 sprintf (fogname, "%s_%ifog", loadmodel->name, i);
 178                                         if (version == SPRITE32_VERSION)
 179                                         {
 180                                                 loadmodel->sprite.sprdata_frames[realframes].texture = R_LoadTexture2D(loadmodel->texturepool, name, width, height, datapointer, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_CLAMP | TEXF_PRECACHE, NULL);
 181                                                 // make fog version (just alpha)
 182                                                 pixbuf = Mem_Alloc(tempmempool, width*height*4);
 183                                                 Image_CopyMux(pixbuf, datapointer, width, height, false, false, false, 4, 4, alphaonlytable);
 184                                                 loadmodel->sprite.sprdata_frames[realframes].fogtexture = R_LoadTexture2D(loadmodel->texturepool, fogname, width, height, pixbuf, TEXTYPE_RGBA, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_CLAMP | TEXF_PRECACHE, NULL);
 185                                                 Mem_Free(pixbuf);
 186                                         }
 187                                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 188                                         {
 189                                                 loadmodel->sprite.sprdata_frames[realframes].texture = R_LoadTexture2D(loadmodel->texturepool, name, width, height, datapointer, TEXTYPE_PALETTE, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_CLAMP | TEXF_PRECACHE, palette);
 190                                                 loadmodel->sprite.sprdata_frames[realframes].fogtexture = R_LoadTexture2D(loadmodel->texturepool, fogname, width, height, datapointer, TEXTYPE_PALETTE, TEXF_ALPHA | (r_mipsprites.integer ? TEXF_MIPMAP : 0) | TEXF_CLAMP | TEXF_PRECACHE, alphapalette);
 191                                         }
 192                                 }
 193                         }
 194
 195                         if (version == SPRITE32_VERSION)
 196                                 datapointer += width * height * 4;
 197                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 198                                 datapointer += width * height;
 199                         realframes++;
 200                 }
 201         }
 202
 203         modelradius = sqrt(modelradius);
 204         for (i = 0;i < 3;i++)
 205         {
 206                 loadmodel->normalmins[i] = loadmodel->yawmins[i] = loadmodel->rotatedmins[i] = -modelradius;
 207                 loadmodel->normalmaxs[i] = loadmodel->yawmaxs[i] = loadmodel->rotatedmaxs[i] = modelradius;
 208         }
 209         loadmodel->radius = modelradius;
 210         loadmodel->radius2 = modelradius * modelradius;
 211 }
 212
 213 extern void R_Model_Sprite_Draw(entity_render_t *ent);
 214 void Mod_IDSP_Load(model_t *mod, void *buffer)
 215 {
 216         int version, i, rendermode;
 217         qbyte palette[256][4], alphapalette[256][4], *in;
 218         dsprite_t *pinqsprite;
 219         dspritehl_t *pinhlsprite;
 220         qbyte *datapointer;
 221
 222         datapointer = buffer;
 223
 224         loadmodel->DrawSky = NULL;
 225         loadmodel->Draw = R_Model_Sprite_Draw;
 226         loadmodel->DrawShadowVolume = NULL;
 227         loadmodel->DrawLight = NULL;
 228
 229         version = LittleLong(((dsprite_t *)buffer)->version);
 230         if (version == SPRITE_VERSION || SPRITE32_VERSION)
 231         {
 232                 pinqsprite = (dsprite_t *)datapointer;
 233                 datapointer += sizeof(dsprite_t);
 234
 235                 loadmodel->numframes = LittleLong (pinqsprite->numframes);
 236                 loadmodel->sprite.sprnum_type = LittleLong (pinqsprite->type);
 237                 loadmodel->synctype = LittleLong (pinqsprite->synctype);
 238
 239                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinqsprite->version), palette_complete, palette_alpha);
 240         }
 241         else if (version == SPRITEHL_VERSION)
 242         {
 243                 pinhlsprite = (dspritehl_t *)datapointer;
 244                 datapointer += sizeof(dspritehl_t);
 245
 246                 loadmodel->numframes = LittleLong (pinhlsprite->numframes);
 247                 loadmodel->sprite.sprnum_type = LittleLong (pinhlsprite->type);
 248                 loadmodel->synctype = LittleLong (pinhlsprite->synctype);
 249                 rendermode = pinhlsprite->rendermode;
 250
 251                 in = datapointer;
 252                 datapointer += 2;
 253                 i = in[0] + in[1] * 256;
 254                 if (i != 256)
 255                         Host_Error ("Mod_IDSP_Load: unexpected number of palette colors %i (should be 256)", i);
 256                 in = datapointer;
 257                 datapointer += 768;
 258                 switch(rendermode)
 259                 {
 260                 case SPRHL_NORMAL:
 261                         for (i = 0;i < 255;i++)
 262                         {
 263                                 palette[i][0] = *in++;
 264                                 palette[i][1] = *in++;
 265                                 palette[i][2] = *in++;
 266                                 palette[i][3] = 255;
 267                         }
 268                         palette[255][0] = palette[255][1] = palette[255][2] = palette[255][3] = 0;
 269                         break;
 270                 case SPRHL_ADDITIVE:
 271                         for (i = 0;i < 256;i++)
 272                         {
 273                                 palette[i][0] = *in++;
 274                                 palette[i][1] = *in++;
 275                                 palette[i][2] = *in++;
 276                                 palette[i][3] = 255;
 277                         }
 278                         loadmodel->flags |= EF_ADDITIVE;
 279                         break;
 280                 case SPRHL_INDEXALPHA:
 281                         for (i = 0;i < 256;i++)
 282                         {
 283                                 palette[i][0] = 255;
 284                                 palette[i][1] = 255;
 285                                 palette[i][2] = 255;
 286                                 palette[i][3] = i;
 287                                 in += 3;
 288                         }
 289                         break;
 290                 case SPRHL_ALPHATEST:
 291                         for (i = 0;i < 255;i++)
 292                         {
 293                                 palette[i][0] = *in++;
 294                                 palette[i][1] = *in++;
 295                                 palette[i][2] = *in++;
 296                                 palette[i][3] = 255;
 297                         }
 298                         palette[0][0] = palette[0][1] = palette[0][2] = palette[0][3] = 0;
 299                         break;
 300                 default:
 301                         Host_Error("Mod_IDSP_Load: unknown texFormat (%i, should be 0, 1, 2, or 3)\n", i);
 302                         return;
 303                 }
 304
 305                 for (i = 0;i < 256;i++)
 306                 {
 307                         alphapalette[i][0] = 255;
 308                         alphapalette[i][1] = 255;
 309                         alphapalette[i][2] = 255;
 310                         alphapalette[i][3] = palette[i][3];
 311                 }
 312
 313                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinhlsprite->version), (int *)(&palette[0][0]), (int *)(&alphapalette[0][0]));
 314         }
 315         else
 316                 Host_Error("Mod_IDSP_Load: %s has wrong version number (%i should be 1 (quake) or 32 (sprite32) or 2 (halflife)", loadmodel->name, version);
 317 }
 318