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external vis file support

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This commit is contained in:
Ozkan Sezer 2021-08-27 14:00:32 +03:00
parent 8a72565fd0
commit 9f8b569f9b
2 changed files with 123 additions and 0 deletions
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1
Quake/common.c
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@ -1690,6 +1690,7 @@ static int COM_FindFile (const char *filename, int *handle, FILE **file,
if (strcmp(COM_FileGetExtension(filename), "pcx") != 0
&& strcmp(COM_FileGetExtension(filename), "tga") != 0
&& strcmp(COM_FileGetExtension(filename), "lit") != 0
&& strcmp(COM_FileGetExtension(filename), "vis") != 0
&& strcmp(COM_FileGetExtension(filename), "ent") != 0)
Con_DPrintf ("FindFile: can't find %s\n", filename);
else Con_DPrintf2("FindFile: can't find %s\n", filename);

122
Quake/gl_model.c
View file

@ -35,6 +35,7 @@ void Mod_LoadAliasModel (qmodel_t *mod, void *buffer);
qmodel_t *Mod_LoadModel (qmodel_t *mod, qboolean crash);
cvar_t external_ents = {"external_ents", "1", CVAR_ARCHIVE};
cvar_t external_vis = {"external_vis", "1", CVAR_ARCHIVE};
static byte *mod_novis;
static int mod_novis_capacity;
@ -57,6 +58,7 @@ Mod_Init
void Mod_Init (void)
{
Cvar_RegisterVariable (&gl_subdivide_size);
Cvar_RegisterVariable (&external_vis);
Cvar_RegisterVariable (&external_ents);
//johnfitz -- create notexture miptex
@ -1969,6 +1971,101 @@ void Mod_BoundsFromClipNode (qmodel_t *mod, int hull, int nodenum)
Mod_BoundsFromClipNode (mod, hull, node->children[1]);
}
/* EXTERNAL VIS FILE SUPPORT:
*/
typedef struct vispatch_s
{
char mapname[32];
int filelen; // length of data after header (VIS+Leafs)
} vispatch_t;
#define VISPATCH_HEADER_LEN 36
static FILE *Mod_FindVisibilityExternal(void)
{
vispatch_t header;
char visfilename[MAX_QPATH];
const char* shortname;
unsigned int path_id;
FILE *f;
long pos;
size_t r;
q_snprintf(visfilename, sizeof(visfilename), "maps/%s.vis", loadname);
if (COM_FOpenFile(visfilename, &f, &path_id) < 0)
{
Con_DPrintf("%s not found, trying ", visfilename);
q_snprintf(visfilename, sizeof(visfilename), "%s.vis", COM_SkipPath(com_gamedir));
Con_DPrintf("%s\n", visfilename);
if (COM_FOpenFile(visfilename, &f, &path_id) < 0)
{
Con_DPrintf("external vis not found\n");
return NULL;
}
}
if (path_id < loadmodel->path_id)
{
fclose(f);
Con_DPrintf("ignored %s from a gamedir with lower priority\n", visfilename);
return NULL;
}
Con_DPrintf("Found external VIS %s\n", visfilename);
shortname = COM_SkipPath(loadmodel->name);
pos = 0;
while ((r = fread(&header, 1, VISPATCH_HEADER_LEN, f)) == VISPATCH_HEADER_LEN)
{
header.filelen = LittleLong(header.filelen);
if (header.filelen <= 0) { /* bad entry -- don't trust the rest. */
fclose(f);
return NULL;
}
if (!q_strcasecmp(header.mapname, shortname))
break;
pos += header.filelen + VISPATCH_HEADER_LEN;
fseek(f, pos, SEEK_SET);
}
if (r != VISPATCH_HEADER_LEN) {
fclose(f);
Con_DPrintf("%s not found in %s\n", shortname, visfilename);
return NULL;
}
return f;
}
static byte *Mod_LoadVisibilityExternal(FILE* f)
{
int filelen;
byte* visdata;
filelen = 0;
fread(&filelen, 1, 4, f);
filelen = LittleLong(filelen);
if (filelen <= 0) return NULL;
Con_DPrintf("...%d bytes visibility data\n", filelen);
visdata = (byte *) Hunk_AllocName(filelen, "EXT_VIS");
if (!fread(visdata, filelen, 1, f))
return NULL;
return visdata;
}
static void Mod_LoadLeafsExternal(FILE* f)
{
int filelen;
void* in;
filelen = 0;
fread(&filelen, 1, 4, f);
filelen = LittleLong(filelen);
if (filelen <= 0) return;
Con_DPrintf("...%d bytes leaf data\n", filelen);
in = Hunk_AllocName(filelen, "EXT_LEAF");
if (!fread(in, filelen, 1, f))
return;
Mod_ProcessLeafs_S((dsleaf_t *)in, filelen);
}
/*
=================
Mod_LoadBrushModel
@ -2021,8 +2118,33 @@ void Mod_LoadBrushModel (qmodel_t *mod, void *buffer)
Mod_LoadTexinfo (&header->lumps[LUMP_TEXINFO]);
Mod_LoadFaces (&header->lumps[LUMP_FACES], bsp2);
Mod_LoadMarksurfaces (&header->lumps[LUMP_MARKSURFACES], bsp2);
if (!bsp2 && external_vis.value && sv.modelname[0] && !q_strcasecmp(loadname, sv.name))
{
FILE* fvis;
Con_DPrintf("trying to open external vis file\n");
fvis = Mod_FindVisibilityExternal();
if (fvis) {
int mark = Hunk_LowMark();
loadmodel->leafs = NULL;
loadmodel->numleafs = 0;
Con_DPrintf("found valid external .vis file for map\n");
loadmodel->visdata = Mod_LoadVisibilityExternal(fvis);
if (loadmodel->visdata) {
Mod_LoadLeafsExternal(fvis);
}
fclose(fvis);
if (loadmodel->visdata && loadmodel->leafs && loadmodel->numleafs) {
goto visdone;
}
Hunk_FreeToLowMark(mark);
Con_DPrintf("External VIS data failed, using standard vis.\n");
}
}
Mod_LoadVisibility (&header->lumps[LUMP_VISIBILITY]);
Mod_LoadLeafs (&header->lumps[LUMP_LEAFS], bsp2);
visdone:
Mod_LoadNodes (&header->lumps[LUMP_NODES], bsp2);
Mod_LoadClipnodes (&header->lumps[LUMP_CLIPNODES], bsp2);
Mod_LoadEntities (&header->lumps[LUMP_ENTITIES]);