Not as clean as it could be, but for now it will work.

include/client.h

@@ -387,6 +387,8 @@ extern	dlight_t		cl_dlights[MAX_DLIGHTS];
 extern	qboolean	nomaster;
 extern char	*server_version;	// version of server we connected to
 
+extern	qboolean	allowskybox;
+
 //=============================================================================
 
 

include/glquake.h

@@ -254,6 +254,8 @@ extern	cvar_t	*gl_max_size;
  CVAR_FIXME */
 extern	cvar_t	*gl_playermip;
 
+extern	cvar_t	*r_skyname;
+
 extern	int			mirrortexturenum;	// quake texturenum, not gltexturenum
 extern	qboolean	mirror;
 extern	mplane_t	*mirror_plane;

include/render.h

@@ -153,4 +153,6 @@ void D_DeleteSurfaceCache (void);
 void D_InitCaches (void *buffer, int size);
 void R_SetVrect (vrect_t *pvrect, vrect_t *pvrectin, int lineadj);
 
+void R_LoadSkys (char *);
+
 #endif // _RENDER_H

source/cl_main.c

@@ -32,8 +32,6 @@
 #endif
 #include <ctype.h>
 
-#include "sys.h"
-#include "quakedef.h"
 #ifdef _WIN32
 #include "winquake.h"
 #include "winsock.h"
@@ -42,6 +40,8 @@
 #include <netinet/in.h>
 #endif
 
+#include "sys.h"
+#include "quakedef.h"
 
 // we need to declare some mouse variables here, because the menu system
 // references them even when on a unix system.
@@ -673,6 +673,19 @@ void CL_FullServerinfo_f (void)
 		else
 			Con_Printf("Invalid standards version: %s", p);
 	}
+	if ((p = Info_ValueForKey(cl.serverinfo, "skybox")) && *p)
+	{
+		if (stricmp (p, "none") == 0)
+		{
+			allowskybox = false;
+		} else {
+			allowskybox = true;
+			Cmd_ExecuteString (va("loadsky %s\n", p));
+//			R_LoadSkys (p);
+		}
+	} else {
+		allowskybox = false;
+	}
 }
 
 /*

source/gl_rmain.c

@@ -181,6 +181,8 @@ cvar_t	*gl_reporttjunctions;
  CVAR_FIXME */
 cvar_t	*gl_finish;
 
+cvar_t	*r_skyname;
+
 /* extern	cvar_t	gl_ztrick;
  CVAR_FIXME */
 extern	cvar_t	*gl_ztrick;

source/gl_rmisc.c

@@ -56,6 +56,8 @@
 qboolean VID_Is8bit(void);
 extern void R_InitBubble();
 
+qboolean	allowskybox;		// allow skyboxes?  --KB
+
 /*
 ==================
 R_InitTextures
@@ -218,6 +220,8 @@ R_Init
 */
 void R_Init (void)
 {
+	allowskybox = false;	// server will decide if this is allowed  --KB
+
 	Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);	
 	Cmd_AddCommand ("envmap", R_Envmap_f);	
 	Cmd_AddCommand ("pointfile", R_ReadPointFile_f);
@@ -302,6 +306,9 @@ void R_Init (void)
  CVAR_FIXME */
 	gl_reporttjunctions = Cvar_Get("gl_reporttjunctions", "0", CVAR_NONE, "None");
 	
+	r_skyname = Cvar_Get("r_skyname", "none", CVAR_NONE, 
+			"name of the current skybox");
+
 	R_InitBubble();
 	
 	R_InitParticles ();
@@ -505,6 +512,7 @@ R_NewMap
 void R_NewMap (void)
 {
 	int		i;
+	cvar_t		*r_skyname;
 	
 	for (i=0 ; i<256 ; i++)
 		d_lightstylevalue[i] = 264;		// normal light value
@@ -535,6 +543,10 @@ void R_NewMap (void)
 			mirrortexturenum = i;
  		cl.worldmodel->textures[i]->texturechain = NULL;
 	}
+	r_skyname = Cvar_FindVar ("r_skyname");
+	if (r_skyname != NULL)
+		R_LoadSkys (r_skyname->string);
+	else
 		R_LoadSkys ("none");
 }
 

source/gl_warp.c

@@ -896,7 +896,7 @@ void R_DrawSkyChain (msurface_t *s)
 	vec3_t	verts[MAX_CLIP_VERTS];
 	glpoly_t	*p;
 
-	if (skyloaded)
+	if (allowskybox && skyloaded)
 	{
 		c_sky = 0;
 		GL_Bind(solidskytexture);

source/pr_edict.c

@@ -808,6 +808,7 @@ char *ED_ParseEdict (char *data, edict_t *ent)
 	qboolean	anglehack;
 	qboolean	init;
 	char		keyname[256];
+	cvar_t		*r_skyname;
 
 	init = false;
 
@@ -825,18 +826,17 @@ char *ED_ParseEdict (char *data, edict_t *ent)
 		if (!data)
 			SV_Error ("ED_ParseEntity: EOF without closing brace");
 		
-// anglehack is to allow QuakeEd to write single scalar angles
+		// anglehack is to allow QuakeEd to write single scalar angles
-// and allow them to be turned into vectors. (FIXME...)
+		// and allow them to be turned into vectors. (FIXME...)
-if (!strcmp(com_token, "angle"))
+		if (!strcmp(com_token, "angle"))
-{
+		{
 			strcpy (com_token, "angles");
 			anglehack = true;
-}
+		} else
-else
 			anglehack = false;
 
-// FIXME: change light to _light to get rid of this hack
+		// FIXME: change light to _light to get rid of this hack
-if (!strcmp(com_token, "light"))
+		if (!strcmp(com_token, "light"))
 			strcpy (com_token, "light_lev");	// hack for single light def
 
 		strcpy (keyname, com_token);
@@ -856,6 +856,16 @@ if (!strcmp(com_token, "light"))
 		if (keyname[0] == '_')
 			continue;
 
+		if (stricmp (keyname, "skyname") == 0 ||
+				stricmp (keyname, "qlsky") == 0)
+		{
+			Info_SetValueForKey (svs.info, "skybox",
+					"1", MAX_SERVERINFO_STRING);
+			r_skyname = Cvar_Get ("r_skyname", com_token,
+					CVAR_NONE, "name of skybox");
+			continue;
+		}
+
 		key = ED_FindField (keyname);
 		if (!key)
 		{

source/r_main.c

@@ -250,7 +250,9 @@ void R_Init (void)
 {
 	int		dummy;
 
-// get stack position so we can guess if we are going to overflow
+	allowskybox = false;	// server decides this  --KB
+
+	// get stack position so we can guess if we are going to overflow
 	r_stack_start = (byte *)&dummy;
 	
 	R_InitTurb ();

source/r_misc.c

@@ -33,6 +33,7 @@
 #include "quakedef.h"
 #include "r_local.h"
 
+qboolean	allowskybox;	// whether or not to allow skyboxes  --KB
 
 /*
 ===============

source/sv_user.c

@@ -91,6 +91,7 @@ void SV_New_f (void)
 {
 	char		*gamedir;
 	int			playernum;
+	cvar_t		*r_skyname;
 
 	if (host_client->state == cs_spawned)
 		return;
@@ -147,6 +148,15 @@ void SV_New_f (void)
 	// send server info string
 	MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
 	MSG_WriteString (&host_client->netchan.message, va("fullserverinfo \"%s\"\n", svs.info) );
+
+	// Send our current skybox
+	r_skyname = Cvar_FindVar ("r_skyname");
+	if (r_skyname != NULL)
+	{
+		MSG_WriteByte (&host_client->netchan.message, svc_stufftext);
+		MSG_WriteString (&host_client->netchan.message, va("r_skyname %s",
+					r_skyname->string));
+	}
 }
 
 /*