diff --git a/src/hardware/k_brightmap.c b/src/hardware/k_brightmap.c new file mode 100644 index 0000000000000000000000000000000000000000..a13ea65afbfad09001487371cf8f189a797dbb50 --- /dev/null +++ b/src/hardware/k_brightmap.c @@ -0,0 +1,265 @@ +// DR. ROBOTNIK'S RING RACERS +//----------------------------------------------------------------------------- +// Copyright (C) 2024 by Sally "TehRealSalt" Cochenour +// Copyright (C) 2024 by Kart Krew +// +// This program is free software distributed under the +// terms of the GNU General Public License, version 2. +// See the 'LICENSE' file for more details. +//----------------------------------------------------------------------------- +/// \file k_brightmap.c +/// \brief Brightmap texture loading. + +#include "k_brightmap.h" + +#include "doomdata.h" +#include "doomdef.h" +#include "doomtype.h" +#include "fastcmp.h" +#include "r_textures.h" +#include "w_wad.h" +#include "z_zone.h" + +static brightmapStorage_t *brightmapStorage = NULL; +static size_t maxBrightmapStorage = 0; + +/*-------------------------------------------------- + static brightmapStorage_t *K_NewBrightmap(void) + + Increases the size of maxBrightmapStorage by 1. + + Input Arguments:- + None + + Return:- + The new brightmap storage struct. +--------------------------------------------------*/ +static brightmapStorage_t *K_NewBrightmap(void) +{ + maxBrightmapStorage++; + brightmapStorage = (brightmapStorage_t *)Z_Realloc(brightmapStorage, sizeof(brightmapStorage_t) * (maxBrightmapStorage + 1), PU_STATIC, &brightmapStorage); + return &brightmapStorage[ maxBrightmapStorage - 1 ]; +} + +/*-------------------------------------------------- + static brightmapStorage_t *K_GetBrightmapStorageByIndex(size_t checkIndex) + + See header file for description. +--------------------------------------------------*/ +static brightmapStorage_t *K_GetBrightmapStorageByIndex(size_t checkIndex) +{ + if (checkIndex >= maxBrightmapStorage) + { + return NULL; + } + + return &brightmapStorage[checkIndex]; +} + +/*-------------------------------------------------- + static brightmapStorage_t *K_GetBrightmapStorageByTextureName(const char *checkName) + + See header file for description. +--------------------------------------------------*/ +static brightmapStorage_t *K_GetBrightmapStorageByTextureName(const char *checkName) +{ + UINT32 checkHash = quickncasehash(checkName, 8); + size_t i; + + if (maxBrightmapStorage == 0) + { + return NULL; + } + + for (i = 0; i < maxBrightmapStorage; i++) + { + brightmapStorage_t *bms = &brightmapStorage[i]; + + if (checkHash == bms->textureHash && !strncmp(checkName, bms->textureName, 8)) + { + // Name matches. + return bms; + } + } + + return NULL; +} + +/*-------------------------------------------------- + static boolean K_BRIGHTLumpParser(char *data, size_t size) + + Parses inputted lump data as a BRIGHT lump. + + Input Arguments:- + data - Pointer to lump data. + size - The length of the lump data. + + Return:- + false if any errors occured, otherwise true. +--------------------------------------------------*/ +static boolean K_BRIGHTLumpParser(char *data, size_t size) +{ + char *tkn = M_GetToken((char *)data); + size_t pos = 0; + + while (tkn && (pos = M_GetTokenPos()) < size) + { + boolean valid = true; + + if (stricmp(tkn, "texture") == 0) + { + Z_Free(tkn); + tkn = M_GetToken(NULL); + pos = M_GetTokenPos(); + + if (tkn && pos < size) + { + brightmapStorage_t *bms = K_GetBrightmapStorageByTextureName(tkn); + + if (bms == NULL) + { + bms = K_NewBrightmap(); + strncpy(bms->textureName, tkn, 8); + bms->textureHash = quickncasehash(tkn, 8); + } + + Z_Free(tkn); + tkn = M_GetToken(NULL); + pos = M_GetTokenPos(); + + if (tkn && pos < size) + { + strncpy(bms->brightmapName, tkn, 8); + bms->brightmapHash = quickncasehash(tkn, 8); + } + else + { + CONS_Alert(CONS_ERROR, "No brightmap for brightmap definition.\n"); + valid = false; + } + } + else + { + CONS_Alert(CONS_ERROR, "No texture for brightmap definition.\n"); + valid = false; + } + } + // todo: SPRITE brightmaps?! + else + { + CONS_Alert(CONS_ERROR, "Unknown keyword '%s' found in BRIGHT lump.\n", tkn); + valid = false; + } + + Z_Free(tkn); + + if (valid == false) + { + return false; + } + + tkn = M_GetToken(NULL); + } + + Z_Free(tkn); + return true; +} + +/*-------------------------------------------------- + void K_InitBrightmapsPwad(INT32 wadNum) + + See header file for description. +--------------------------------------------------*/ +void K_InitBrightmapsPwad(INT32 wadNum) +{ + UINT16 lumpNum; + size_t i; + + I_Assert(brightmapStorage == NULL); + + // Find BRIGHT lump in the WAD + lumpNum = W_CheckNumForNamePwad("BRIGHT", wadNum, 0); + + while (lumpNum != INT16_MAX) + { + UINT8 *data = (UINT8 *)W_CacheLumpNumPwad(wadNum, lumpNum, PU_CACHE); + + if (data != NULL) + { + lumpinfo_t *lump_p = &wadfiles[wadNum]->lumpinfo[lumpNum]; + size_t size = W_LumpLengthPwad(wadNum, lumpNum); + char *datacopy; + + size_t nameLength = strlen(wadfiles[wadNum]->filename) + 1 + strlen(lump_p->fullname); // length of file name, '|', and lump name + char *name = malloc(nameLength + 1); + + sprintf(name, "%s|%s", wadfiles[wadNum]->filename, lump_p->fullname); + name[nameLength] = '\0'; + + size = W_LumpLengthPwad(wadNum, lumpNum); + + CONS_Printf(M_GetText("Loading BRIGHT from %s\n"), name); + + datacopy = (char *)Z_Malloc((size+1)*sizeof(char),PU_STATIC,NULL); + memmove(datacopy,data,size); + datacopy[size] = '\0'; + + Z_Free(data); + + K_BRIGHTLumpParser(datacopy, size); + + Z_Free(datacopy); + + free(name); + } + + lumpNum = W_CheckNumForNamePwad("BRIGHT", (UINT16)wadNum, lumpNum + 1); + } + + if (maxBrightmapStorage == 0) + { + // No brightmaps were defined. + return; + } + + for (i = 0; i < maxBrightmapStorage; i++) + { + brightmapStorage_t *bms = K_GetBrightmapStorageByIndex(i); + INT32 texNum, bmNum; + + if (bms == NULL) + { + // Shouldn't happen. + break; + } + + texNum = R_CheckTextureNumForName(bms->textureName); + if (texNum != -1) + { + bmNum = R_CheckTextureNumForName(bms->brightmapName); + R_UpdateTextureBrightmap(texNum, (bmNum == -1 ? 0 : bmNum)); + } + } + + R_ClearTextureNumCache(false); + + // Clear brightmapStorage now that we're done with it. + Z_Free(brightmapStorage); + brightmapStorage = NULL; + maxBrightmapStorage = 0; +} + +/*-------------------------------------------------- + void K_InitBrightmaps(void) + + See header file for description. +--------------------------------------------------*/ +void K_InitBrightmaps(void) +{ + INT32 wadNum; + + for (wadNum = 0; wadNum < numwadfiles; wadNum++) + { + K_InitBrightmapsPwad(wadNum); + } +}