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
  59         // LordHavoc: hack to allow sprites to be non-fullbright
  60         for (i = 0;i < MAX_QPATH && loadmodel->name[i];i++)
  61         {
  62                 if (loadmodel->name[i] == '!')
  63                 {
  64                         loadmodel->flags2 &= ~EF_FULLBRIGHT;
  65                         break;
  66                 }
  67         }
  68
  69         // LordHavoc: 32bit textures
  70         if (version != SPRITE_VERSION && version != SPRITE32_VERSION && version != SPRITEHL_VERSION)
  71                 Host_Error("Mod_Sprite_SharedSetup: unsupported version %i, only %i (quake), %i (HalfLife), and %i (sprite32) supported", version, SPRITE_VERSION, SPRITEHL_VERSION, SPRITE32_VERSION);
  72
  73 //
  74 // load the frames
  75 //
  76         startframes = datapointer;
  77         realframes = 0;
  78         for (i = 0;i < loadmodel->numframes;i++)
  79         {
  80                 pinframetype = (dspriteframetype_t *)datapointer;
  81                 datapointer += sizeof(dspriteframetype_t);
  82
  83                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
  84                         groupframes = 1;
  85                 else
  86                 {
  87                         pingroup = (dspritegroup_t *)datapointer;
  88                         datapointer += sizeof(dspritegroup_t);
  89
  90                         groupframes = LittleLong(pingroup->numframes);
  91
  92                         datapointer += sizeof(dspriteinterval_t) * groupframes;
  93                 }
  94
  95                 for (j = 0;j < groupframes;j++)
  96                 {
  97                         pinframe = (dspriteframe_t *)datapointer;
  98                         if (version == SPRITE32_VERSION)
  99                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height) * 4;
 100                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 101                                 datapointer += sizeof(dspriteframe_t) + LittleLong(pinframe->width) * LittleLong(pinframe->height);
 102                 }
 103                 realframes += groupframes;
 104         }
 105
 106         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 107         loadmodel->sprite.sprdata_frames = Mem_Alloc(loadmodel->mempool, sizeof(mspriteframe_t) * realframes);
 108
 109         datapointer = startframes;
 110         realframes = 0;
 111         for (i = 0;i < loadmodel->numframes;i++)
 112         {
 113                 pinframetype = (dspriteframetype_t *)datapointer;
 114                 datapointer += sizeof(dspriteframetype_t);
 115
 116                 if (LittleLong (pinframetype->type) == SPR_SINGLE)
 117                 {
 118                         groupframes = 1;
 119                         interval = 0.1f;
 120                 }
 121                 else
 122                 {
 123                         pingroup = (dspritegroup_t *)datapointer;
 124                         datapointer += sizeof(dspritegroup_t);
 125
 126                         groupframes = LittleLong(pingroup->numframes);
 127
 128                         pinintervals = (dspriteinterval_t *)datapointer;
 129                         datapointer += sizeof(dspriteinterval_t) * groupframes;
 130
 131                         interval = LittleFloat(pinintervals[0].interval);
 132                         if (interval < 0.01f)
 133                                 Host_Error("Mod_Sprite_SharedSetup: invalid interval");
 134                 }
 135
 136                 sprintf(loadmodel->animscenes[i].name, "frame %i", i);
 137                 loadmodel->animscenes[i].firstframe = realframes;
 138                 loadmodel->animscenes[i].framecount = groupframes;
 139                 loadmodel->animscenes[i].framerate = 1.0f / interval;
 140                 loadmodel->animscenes[i].loop = true;
 141
 142                 for (j = 0;j < groupframes;j++)
 143                 {
 144                         pinframe = (dspriteframe_t *)datapointer;
 145                         datapointer += sizeof(dspriteframe_t);
 146
 147                         origin[0] = LittleLong (pinframe->origin[0]);
 148                         origin[1] = LittleLong (pinframe->origin[1]);
 149                         width = LittleLong (pinframe->width);
 150                         height = LittleLong (pinframe->height);
 151
 152                         loadmodel->sprite.sprdata_frames[realframes].left = origin[0];
 153                         loadmodel->sprite.sprdata_frames[realframes].right = origin[0] + width;
 154                         loadmodel->sprite.sprdata_frames[realframes].up = origin[1];
 155                         loadmodel->sprite.sprdata_frames[realframes].down = origin[1] - height;
 156
 157                         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);
 158                         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);
 159                         if (modelradius < x + y)
 160                                 modelradius = x + y;
 161
 162                         if (width > 0 && height > 0)
 163                         {
 164                                 if (groupframes > 1)
 165                                         sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 166                                 else
 167                                         sprintf (name, "%s_%i", loadmodel->name, i);
 168                                 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 | TEXF_PICMIP);
 169                                 loadmodel->sprite.sprdata_frames[realframes].fogtexture = image_masktex;
 170
 171                                 if (!loadmodel->sprite.sprdata_frames[realframes].texture)
 172                                 {
 173                                         if (groupframes > 1)
 174                                                 sprintf (fogname, "%s_%i_%ifog", loadmodel->name, i, j);
 175                                         else
 176                                                 sprintf (fogname, "%s_%ifog", loadmodel->name, i);
 177                                         if (version == SPRITE32_VERSION)
 178                                         {
 179                                                 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 | TEXF_PICMIP, NULL);
 180                                                 // make fog version (just alpha)
 181                                                 pixbuf = Mem_Alloc(tempmempool, width*height*4);
 182                                                 Image_CopyMux(pixbuf, datapointer, width, height, false, false, false, 4, 4, alphaonlytable);
 183                                                 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 | TEXF_PICMIP, NULL);
 184                                                 Mem_Free(pixbuf);
 185                                         }
 186                                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 187                                         {
 188                                                 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 | TEXF_PICMIP, palette);
 189                                                 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 | TEXF_PICMIP, alphapalette);
 190                                         }
 191                                 }
 192                         }
 193
 194                         if (version == SPRITE32_VERSION)
 195                                 datapointer += width * height * 4;
 196                         else //if (version == SPRITE_VERSION || version == SPRITEHL_VERSION)
 197                                 datapointer += width * height;
 198                         realframes++;
 199                 }
 200         }
 201
 202         modelradius = sqrt(modelradius);
 203         for (i = 0;i < 3;i++)
 204         {
 205                 loadmodel->normalmins[i] = loadmodel->yawmins[i] = loadmodel->rotatedmins[i] = -modelradius;
 206                 loadmodel->normalmaxs[i] = loadmodel->yawmaxs[i] = loadmodel->rotatedmaxs[i] = modelradius;
 207         }
 208         loadmodel->radius = modelradius;
 209         loadmodel->radius2 = modelradius * modelradius;
 210 }
 211
 212 extern void R_Model_Sprite_Draw(entity_render_t *ent);
 213 void Mod_IDSP_Load(model_t *mod, void *buffer)
 214 {
 215         int version, i, rendermode;
 216         qbyte palette[256][4], alphapalette[256][4], *in;
 217         dsprite_t *pinqsprite;
 218         dspritehl_t *pinhlsprite;
 219         qbyte *datapointer;
 220
 221         datapointer = buffer;
 222
 223         loadmodel->flags2 = EF_FULLBRIGHT;
 224
 225         loadmodel->DrawSky = NULL;
 226         loadmodel->Draw = R_Model_Sprite_Draw;
 227         loadmodel->DrawShadowVolume = NULL;
 228         loadmodel->DrawLight = NULL;
 229
 230         version = LittleLong(((dsprite_t *)buffer)->version);
 231         if (version == SPRITE_VERSION || version == SPRITE32_VERSION)
 232         {
 233                 pinqsprite = (dsprite_t *)datapointer;
 234                 datapointer += sizeof(dsprite_t);
 235
 236                 loadmodel->numframes = LittleLong (pinqsprite->numframes);
 237                 loadmodel->sprite.sprnum_type = LittleLong (pinqsprite->type);
 238                 loadmodel->synctype = LittleLong (pinqsprite->synctype);
 239
 240                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinqsprite->version), palette_complete, palette_alpha);
 241         }
 242         else if (version == SPRITEHL_VERSION)
 243         {
 244                 pinhlsprite = (dspritehl_t *)datapointer;
 245                 datapointer += sizeof(dspritehl_t);
 246
 247                 loadmodel->numframes = LittleLong (pinhlsprite->numframes);
 248                 loadmodel->sprite.sprnum_type = LittleLong (pinhlsprite->type);
 249                 loadmodel->synctype = LittleLong (pinhlsprite->synctype);
 250                 rendermode = pinhlsprite->rendermode;
 251
 252                 in = datapointer;
 253                 datapointer += 2;
 254                 i = in[0] + in[1] * 256;
 255                 if (i != 256)
 256                         Host_Error ("Mod_IDSP_Load: unexpected number of palette colors %i (should be 256)", i);
 257                 in = datapointer;
 258                 datapointer += 768;
 259                 switch(rendermode)
 260                 {
 261                 case SPRHL_NORMAL:
 262                         for (i = 0;i < 255;i++)
 263                         {
 264                                 palette[i][0] = *in++;
 265                                 palette[i][1] = *in++;
 266                                 palette[i][2] = *in++;
 267                                 palette[i][3] = 255;
 268                         }
 269                         palette[255][0] = palette[255][1] = palette[255][2] = palette[255][3] = 0;
 270                         break;
 271                 case SPRHL_ADDITIVE:
 272                         for (i = 0;i < 256;i++)
 273                         {
 274                                 palette[i][0] = *in++;
 275                                 palette[i][1] = *in++;
 276                                 palette[i][2] = *in++;
 277                                 palette[i][3] = 255;
 278                         }
 279                         loadmodel->flags2 |= EF_ADDITIVE;
 280                         break;
 281                 case SPRHL_INDEXALPHA:
 282                         for (i = 0;i < 256;i++)
 283                         {
 284                                 palette[i][0] = 255;
 285                                 palette[i][1] = 255;
 286                                 palette[i][2] = 255;
 287                                 palette[i][3] = i;
 288                                 in += 3;
 289                         }
 290                         break;
 291                 case SPRHL_ALPHATEST:
 292                         for (i = 0;i < 255;i++)
 293                         {
 294                                 palette[i][0] = *in++;
 295                                 palette[i][1] = *in++;
 296                                 palette[i][2] = *in++;
 297                                 palette[i][3] = 255;
 298                         }
 299                         palette[0][0] = palette[0][1] = palette[0][2] = palette[0][3] = 0;
 300                         break;
 301                 default:
 302                         Host_Error("Mod_IDSP_Load: unknown texFormat (%i, should be 0, 1, 2, or 3)\n", i);
 303                         return;
 304                 }
 305
 306                 for (i = 0;i < 256;i++)
 307                 {
 308                         alphapalette[i][0] = 255;
 309                         alphapalette[i][1] = 255;
 310                         alphapalette[i][2] = 255;
 311                         alphapalette[i][3] = palette[i][3];
 312                 }
 313
 314                 Mod_Sprite_SharedSetup(datapointer, LittleLong (pinhlsprite->version), (int *)(&palette[0][0]), (int *)(&alphapalette[0][0]));
 315         }
 316         else
 317                 Host_Error("Mod_IDSP_Load: %s has wrong version number (%i should be 1 (quake) or 32 (sprite32) or 2 (halflife)", loadmodel->name, version);
 318 }
 319