maps: add little bit knowledge about SIN

Without real implementation for now

README.md

@@ -67,6 +67,7 @@ Maps support:
 | ------ | ------- | ------------------------------------------ |
 | IBSP   | 39      | Quake 2 / Anachronox / Kingpin / Heretic 2 |
 | IBSP   | 41      | Daikatana / SIN                            |
+| RBSP   | 1       | SIN                                        |
 | QBSP   | 39      | Quake 2 ReRelease                          |
 | BSPX   | 39      | Quake 2 ReRelease (Extension to IBSP)      |
 

src/client/refresh/files/maps.c

@@ -247,7 +247,8 @@ Mod_LoadQBSPNodes(const char *name, cplane_t *planes, int numplanes, mleaf_t *le
 	int numleafs, mnode_t **nodes, int *numnodes, const byte *mod_base,
 	const lump_t *l, int ident)
 {
-	if (ident == IDBSPHEADER)
+	if ((ident == IDBSPHEADER) ||
+		(ident == RBSPHEADER))
 	{
 		Mod_LoadNodes(name, planes, numplanes, leafs, numleafs, nodes, numnodes,
 			mod_base, l);
@@ -571,7 +572,8 @@ void
 Mod_LoadQBSPEdges(const char *name, medge_t **edges, int *numedges,
 	const byte *mod_base, const lump_t *l, int ident)
 {
-	if (ident == IDBSPHEADER)
+	if ((ident == IDBSPHEADER) ||
+		(ident == RBSPHEADER))
 	{
 		Mod_LoadEdges(name, edges, numedges, mod_base, l);
 	}
@@ -693,7 +695,8 @@ Mod_LoadBSPX(int filesize, const byte *mod_base, maptype_t maptype)
 	xofs = 0;
 
 	numlumps = HEADER_LUMPS;
-	if (maptype == map_daikatana)
+	if ((header->version == BSPDKMVERSION) &&
+		(maptype == map_daikatana))
 	{
 		numlumps = 21;
 	}
@@ -865,7 +868,8 @@ void
 Mod_LoadQBSPMarksurfaces(const char *name, msurface_t ***marksurfaces, unsigned int *nummarksurfaces,
 	msurface_t *surfaces, int numsurfaces, const byte *mod_base, const lump_t *l, int ident)
 {
-	if (ident == IDBSPHEADER)
+	if ((ident == IDBSPHEADER) ||
+		(ident == RBSPHEADER))
 	{
 		Mod_LoadMarksurfaces(name, marksurfaces, nummarksurfaces,
 			surfaces, numsurfaces, mod_base, l);
@@ -1032,7 +1036,8 @@ Mod_LoadQBSPLeafs(const char *name, mleaf_t **leafs, int *numleafs,
 	msurface_t **marksurfaces, unsigned int nummarksurfaces,
 	const byte *mod_base, const lump_t *l, int ident, maptype_t maptype)
 {
-	if (ident == IDBSPHEADER)
+	if ((ident == IDBSPHEADER) ||
+		(ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(l->filelen % sizeof(ddkleaf_t) == 0))
@@ -1357,7 +1362,8 @@ calcTexinfoFacesLeafsSize(const byte *mod_base, const dheader_t *header)
 {
 	int hunkSize = 0;
 
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += calcTexinfoAndFacesSize(mod_base,
 			&header->lumps[LUMP_FACES], &header->lumps[LUMP_TEXINFO]);

src/client/refresh/gl1/gl1_model.c

@@ -453,7 +453,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->ident);
 
-	if (i != IDBSPHEADER && i != QBSPHEADER)
+	if ((i != IDBSPHEADER) &&
+		(i != RBSPHEADER) &&
+		(i != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, mod->name, i, IDBSPHEADER);
@@ -461,7 +463,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->version);
 
-	if (i != BSPVERSION && i != BSPDKMVERSION)
+	if ((i != BSPVERSION) &&
+		(i != BSPSINVERSION) &&
+		(i != BSPDKMVERSION))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong version number (%i should be %i)",
 				__func__, mod->name, i, BSPVERSION);
@@ -489,7 +493,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	int hunkSize = 0;
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VERTEXES],
 		sizeof(dvertex_t), sizeof(mvertex_t), EXTRA_LUMP_VERTEXES);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_EDGES],
 			sizeof(dedge_t), sizeof(medge_t), EXTRA_LUMP_EDGES);
@@ -508,7 +513,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	hunkSize += calcTexinfoFacesLeafsSize(mod_base, header);
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VISIBILITY],
 		1, 1, 0);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header->lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -567,7 +573,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	Mod_LoadTexinfo(mod->name, &mod->texinfo, &mod->numtexinfo,
 		mod_base, &header->lumps[LUMP_TEXINFO], (findimage_t)R_FindImage,
 		r_notexture, maptype);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		Mod_LoadFaces(mod, mod_base, &header->lumps[LUMP_FACES], bspx_header);
 	}
@@ -708,6 +715,8 @@ Mod_ForName(const char *name, model_t *parent_model, qboolean crash)
 
 		case IDBSPHEADER:
 			/* fall through */
+		case RBSPHEADER:
+			/* fall through */
 		case QBSPHEADER:
 			Mod_LoadBrushModel(mod, buf, modfilelen);
 			break;

src/client/refresh/gl3/gl3_model.c

@@ -454,7 +454,9 @@ Mod_LoadBrushModel(gl3model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->ident);
 
-	if (i != IDBSPHEADER && i != QBSPHEADER)
+	if ((i != IDBSPHEADER) &&
+		(i != RBSPHEADER) &&
+		(i != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, mod->name, i, IDBSPHEADER);
@@ -462,7 +464,9 @@ Mod_LoadBrushModel(gl3model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->version);
 
-	if (i != BSPVERSION && i != BSPDKMVERSION)
+	if ((i != BSPVERSION) &&
+		(i != BSPSINVERSION) &&
+		(i != BSPDKMVERSION))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong version number (%i should be %i)",
 				__func__, mod->name, i, BSPVERSION);
@@ -490,7 +494,8 @@ Mod_LoadBrushModel(gl3model_t *mod, const void *buffer, int modfilelen)
 	int hunkSize = 0;
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VERTEXES],
 		sizeof(dvertex_t), sizeof(mvertex_t), EXTRA_LUMP_VERTEXES);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_EDGES],
 			sizeof(dedge_t), sizeof(medge_t), EXTRA_LUMP_EDGES);
@@ -509,7 +514,8 @@ Mod_LoadBrushModel(gl3model_t *mod, const void *buffer, int modfilelen)
 	hunkSize += calcTexinfoFacesLeafsSize(mod_base, header);
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VISIBILITY],
 		1, 1, 0);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header->lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -568,7 +574,8 @@ Mod_LoadBrushModel(gl3model_t *mod, const void *buffer, int modfilelen)
 	Mod_LoadTexinfo(mod->name, &mod->texinfo, &mod->numtexinfo,
 		mod_base, &header->lumps[LUMP_TEXINFO], (findimage_t)GL3_FindImage,
 		gl3_notexture, maptype);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		Mod_LoadFaces(mod, mod_base, &header->lumps[LUMP_FACES], bspx_header);
 	}
@@ -709,6 +716,8 @@ Mod_ForName(const char *name, gl3model_t *parent_model, qboolean crash)
 
 		case IDBSPHEADER:
 			/* fall through */
+		case RBSPHEADER:
+			/* fall through */
 		case QBSPHEADER:
 			Mod_LoadBrushModel(mod, buf, modfilelen);
 			break;

src/client/refresh/gl4/gl4_model.c

@@ -454,7 +454,9 @@ Mod_LoadBrushModel(gl4model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->ident);
 
-	if (i != IDBSPHEADER && i != QBSPHEADER)
+	if ((i != IDBSPHEADER) &&
+		(i != RBSPHEADER) &&
+		(i != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, mod->name, i, IDBSPHEADER);
@@ -462,7 +464,9 @@ Mod_LoadBrushModel(gl4model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->version);
 
-	if (i != BSPVERSION && i != BSPDKMVERSION)
+	if ((i != BSPVERSION) &&
+		(i != BSPSINVERSION) &&
+		(i != BSPDKMVERSION))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong version number (%i should be %i)",
 				__func__, mod->name, i, BSPVERSION);
@@ -490,7 +494,8 @@ Mod_LoadBrushModel(gl4model_t *mod, const void *buffer, int modfilelen)
 	int hunkSize = 0;
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VERTEXES],
 		sizeof(dvertex_t), sizeof(mvertex_t), EXTRA_LUMP_VERTEXES);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_EDGES],
 			sizeof(dedge_t), sizeof(medge_t), EXTRA_LUMP_EDGES);
@@ -509,7 +514,8 @@ Mod_LoadBrushModel(gl4model_t *mod, const void *buffer, int modfilelen)
 	hunkSize += calcTexinfoFacesLeafsSize(mod_base, header);
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VISIBILITY],
 		1, 1, 0);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header->lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -568,7 +574,8 @@ Mod_LoadBrushModel(gl4model_t *mod, const void *buffer, int modfilelen)
 	Mod_LoadTexinfo(mod->name, &mod->texinfo, &mod->numtexinfo,
 		mod_base, &header->lumps[LUMP_TEXINFO], (findimage_t)GL4_FindImage,
 		gl4_notexture, maptype);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		Mod_LoadFaces(mod, mod_base, &header->lumps[LUMP_FACES], bspx_header);
 	}
@@ -709,6 +716,8 @@ Mod_ForName(const char *name, gl4model_t *parent_model, qboolean crash)
 
 		case IDBSPHEADER:
 			/* fall through */
+		case RBSPHEADER:
+			/* fall through */
 		case QBSPHEADER:
 			Mod_LoadBrushModel(mod, buf, modfilelen);
 			break;

src/client/refresh/soft/sw_model.c

@@ -438,7 +438,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->ident);
 
-	if (i != IDBSPHEADER && i != QBSPHEADER)
+	if ((i != IDBSPHEADER) &&
+		(i != RBSPHEADER) &&
+		(i != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, mod->name, i, IDBSPHEADER);
@@ -446,7 +448,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->version);
 
-	if (i != BSPVERSION && i != BSPDKMVERSION)
+	if ((i != BSPVERSION) &&
+		(i != BSPSINVERSION) &&
+		(i != BSPDKMVERSION))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong version number (%i should be %i)",
 				__func__, mod->name, i, BSPVERSION);
@@ -474,7 +478,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	int hunkSize = 0;
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VERTEXES],
 		sizeof(dvertex_t), sizeof(mvertex_t), EXTRA_LUMP_VERTEXES);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_EDGES],
 			sizeof(dedge_t), sizeof(medge_t), EXTRA_LUMP_EDGES);
@@ -495,7 +500,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	hunkSize += calcTexinfoFacesLeafsSize(mod_base, header);
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VISIBILITY],
 		1, 1, 0);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header->lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -556,7 +562,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	Mod_LoadTexinfo(mod->name, &mod->texinfo, &mod->numtexinfo,
 		mod_base, &header->lumps[LUMP_TEXINFO], (findimage_t)R_FindImage,
 		r_notexture_mip, maptype);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		Mod_LoadFaces(mod, mod_base, &header->lumps[LUMP_FACES], bspx_header);
 	}
@@ -699,6 +706,8 @@ Mod_ForName(const char *name, model_t *parent_model, qboolean crash)
 
 		case IDBSPHEADER:
 			/* fall through */
+		case RBSPHEADER:
+			/* fall through */
 		case QBSPHEADER:
 			Mod_LoadBrushModel(mod, buf, modfilelen);
 			break;

src/client/refresh/vk/vk_model.c

@@ -428,7 +428,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->ident);
 
-	if (i != IDBSPHEADER && i != QBSPHEADER)
+	if ((i != IDBSPHEADER) &&
+		(i != RBSPHEADER) &&
+		(i != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, mod->name, i, IDBSPHEADER);
@@ -436,7 +438,9 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 
 	i = LittleLong(header->version);
 
-	if (i != BSPVERSION && i != BSPDKMVERSION)
+	if ((i != BSPVERSION) &&
+		(i != BSPSINVERSION) &&
+		(i != BSPDKMVERSION))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong version number (%i should be %i)",
 				__func__, mod->name, i, BSPVERSION);
@@ -464,7 +468,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	int hunkSize = 0;
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VERTEXES],
 		sizeof(dvertex_t), sizeof(mvertex_t), EXTRA_LUMP_VERTEXES);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_EDGES],
 			sizeof(dedge_t), sizeof(medge_t), EXTRA_LUMP_EDGES);
@@ -483,7 +488,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	hunkSize += calcTexinfoFacesLeafsSize(mod_base, header);
 	hunkSize += Mod_CalcLumpHunkSize(&header->lumps[LUMP_VISIBILITY],
 		1, 1, 0);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header->lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -542,7 +548,8 @@ Mod_LoadBrushModel(model_t *mod, const void *buffer, int modfilelen)
 	Mod_LoadTexinfo(mod->name, &mod->texinfo, &mod->numtexinfo,
 		mod_base, &header->lumps[LUMP_TEXINFO], (findimage_t)Vk_FindImage,
 		r_notexture, maptype);
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		Mod_LoadFaces(mod, mod_base, &header->lumps[LUMP_FACES], bspx_header);
 	}
@@ -692,6 +699,8 @@ Mod_ForName(const char *name, model_t *parent_model, qboolean crash)
 
 		case IDBSPHEADER:
 			/* fall through */
+		case RBSPHEADER:
+			/* fall through */
 		case QBSPHEADER:
 			Mod_LoadBrushModel(mod, buf, modfilelen);
 			break;

src/common/cmodels.c

@@ -202,6 +202,7 @@ Mod_MaptypeName(maptype_t maptype)
 		case map_daikatana: maptypename = "Daikatana"; break;
 		case map_kingpin: maptypename = "Kingpin"; break;
 		case map_anachronox: maptypename = "Anachronox"; break;
+		case map_sin: maptypename = "SiN"; break;
 		default: maptypename = "Unknown"; break;
 	}
 
@@ -215,7 +216,8 @@ Mod_LoadValidateLumps(const char *name, const dheader_t *header)
 	qboolean error = false;
 	maptype_t maptype;
 
-	if (header->ident == IDBSPHEADER)
+	if ((header->ident == IDBSPHEADER) ||
+		(header->ident == RBSPHEADER))
 	{
 		rules = idbsplumps;
 		if (header->version == BSPDKMVERSION)

src/common/collision.c

@@ -2013,7 +2013,9 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 		((int *)&header)[i] = LittleLong(((int *)&header)[i]);
 	}
 
-	if (header.ident != IDBSPHEADER && header.ident != QBSPHEADER)
+	if ((header.ident != IDBSPHEADER) &&
+		(header.ident != RBSPHEADER) &&
+		(header.ident != QBSPHEADER))
 	{
 		Com_Error(ERR_DROP, "%s: %s has wrong ident (%i should be %i)",
 				__func__, name, header.ident, IDBSPHEADER);
@@ -2036,6 +2038,14 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 				__func__, name, header.version, BSPVERSION);
 	}
 
+	if ((header.ident == RBSPHEADER) &&
+		(header.version != BSPSINVERSION))
+	{
+		Com_Error(ERR_DROP,
+				"%s: %s has wrong version number (%i should be %i)",
+				__func__, name, header.version, BSPSINVERSION);
+	}
+
 	maptype = Mod_LoadValidateLumps(name, &header);
 
 	cmod_base = (byte *)buf;
@@ -2046,7 +2056,8 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 	hunkSize += Mod_CalcLumpHunkSize(&header.lumps[LUMP_TEXINFO],
 		sizeof(texinfo_t), sizeof(mapsurface_t), EXTRA_LUMP_TEXINFO);
 
-	if (header.ident == IDBSPHEADER)
+	if ((header.ident == IDBSPHEADER) ||
+		(header.ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header.lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -2076,7 +2087,8 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 	hunkSize += Mod_CalcLumpHunkSize(&header.lumps[LUMP_BRUSHES],
 		sizeof(dbrush_t), sizeof(cbrush_t), EXTRA_LUMP_BRUSHES);
 
-	if (header.ident == IDBSPHEADER)
+	if ((header.ident == IDBSPHEADER) ||
+		(header.ident == RBSPHEADER))
 	{
 		hunkSize += Mod_CalcLumpHunkSize(&header.lumps[LUMP_BRUSHSIDES],
 			sizeof(dbrushside_t), sizeof(cbrushside_t), EXTRA_LUMP_BRUSHSIDES);
@@ -2106,7 +2118,9 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 
 	CMod_LoadSurfaces(mod->name, &mod->map_surfaces, &mod->numtexinfo,
 		cmod_base, &header.lumps[LUMP_TEXINFO], maptype);
-	if (header.ident == IDBSPHEADER)
+
+	if ((header.ident == IDBSPHEADER) ||
+		(header.ident == RBSPHEADER))
 	{
 		if ((maptype == map_daikatana) &&
 			(header.lumps[LUMP_LEAFS].filelen % sizeof(ddkleaf_t) == 0))
@@ -2135,7 +2149,8 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 	CMod_LoadBrushes(mod->name, &mod->map_brushes, &mod->numbrushes,
 		cmod_base, &header.lumps[LUMP_BRUSHES]);
 
-	if (header.ident == IDBSPHEADER)
+	if ((header.ident == IDBSPHEADER) ||
+		(header.ident == RBSPHEADER))
 	{
 		CMod_LoadBrushSides(mod->name, &mod->map_brushsides, &mod->numbrushsides,
 			mod->map_planes, mod->numplanes, mod->map_surfaces, mod->numtexinfo,
@@ -2151,7 +2166,8 @@ CM_LoadCachedMap(const char *name, model_t *mod)
 	CMod_LoadSubmodels(mod->name, mod->map_cmodels, &mod->numcmodels,
 		cmod_base, &header.lumps[LUMP_MODELS]);
 
-	if (header.ident == IDBSPHEADER)
+	if ((header.ident == IDBSPHEADER) ||
+		(header.ident == RBSPHEADER))
 	{
 		CMod_LoadNodes(mod->name, &mod->map_nodes, &mod->numnodes,
 			mod->map_planes, cmod_base, &header.lumps[LUMP_NODES]);

src/common/header/cmodel.h

@@ -46,6 +46,7 @@ typedef enum
 	map_daikatana = 2,
 	map_kingpin = 3,
 	map_anachronox = 4,
+	map_sin = 5,
 } maptype_t;
 
 extern int Mod_LoadSurfConvertFlags(int flags, maptype_t maptype);

src/common/header/files.h

@@ -588,7 +588,7 @@ typedef struct {
 	int value;
 } dkmtex_t;
 
-/* .SWL Daikana texture file format */
+/* .SWL SiN texture file format */
 
 #define SIN_PALETTE_SIZE 256 * 4
 
@@ -965,5 +965,9 @@ typedef struct
 	int unknow; /* some unused additional field */
 } ddkleaf_t;
 
+/* SiN structures */
+#define RBSPHEADER (('P' << 24) + ('S' << 16) + ('B' << 8) + 'R') /* little-endian "RBSP" */
+#define BSPSINVERSION 1
+
 #endif