commit 22342fcdfa66d371a69f666e6505a447d9c8a8e2
Author: devhc <devhc@.(none)>
Date:   Wed Jul 13 15:27:14 2011 +0200

    add range marker compatibility hack

diff --git a/src/game/g_buildable.c b/src/game/g_buildable.c
index b1af50c..1204c7f 100644
--- a/src/game/g_buildable.c
+++ b/src/game/g_buildable.c
@@ -4466,6 +4466,8 @@ G_UpdateBuildableRangeMarkers
 */
 void G_UpdateBuildableRangeMarkers( void )
 {
+  qboolean support_for_64bit_clientmasks = ( trap_Cvar_VariableIntegerValue( "sv_gppCompat" ) >= 1 );
+
   gentity_t *e;
   for( e = &g_entities[ MAX_CLIENTS ]; e < &g_entities[ level.num_entities ]; ++e )
   {
@@ -4486,7 +4488,10 @@ void G_UpdateBuildableRangeMarkers( void )
       vectoangles( e->s.origin2, e->rangeMarker->s.apos.trBase );
 
     e->rangeMarker->r.singleClient = 0;
-    e->rangeMarker->r.hiMask = 0;
+    e->rangeMarker->r.compat.generic1 = 0;
+
+    // remove any previously added noclient flags (see the hack below)
+    e->rangeMarker->r.svFlags &= ~SVF_NOCLIENT;
 
     for( i = 0; i < level.maxclients; ++i )
     {
@@ -4498,6 +4503,29 @@ void G_UpdateBuildableRangeMarkers( void )
       if( client->pers.connected != CON_CONNECTED )
         continue;
 
+      if( i >= 32 && !support_for_64bit_clientmasks )
+      {
+        // resort to not sending any range markers
+        static qboolean warned = qfalse;
+
+        if( !warned )
+        {
+          trap_SendServerCommand( -1, "print \"" S_COLOR_YELLOW "WARNING: There is no "
+            "support for 64-bit clientmasks on this server. Please update your server "
+            "executable. Until then, range markers will not be displayed while there "
+            "are clients with client numbers above 31 in the game.\n\"" );
+          warned = qtrue;
+        }
+
+        for( e = &g_entities[ MAX_CLIENTS ]; e < &g_entities[ level.num_entities ]; ++e )
+        {
+          if( e->s.eType == ET_BUILDABLE && e->rangeMarker )
+            e->rangeMarker->r.svFlags |= SVF_NOCLIENT;
+        }
+
+        return;
+      }
+
       team = client->pers.teamSelection;
       if( team != TEAM_NONE )
       {
@@ -4509,7 +4537,7 @@ void G_UpdateBuildableRangeMarkers( void )
       if( ( team == TEAM_NONE || ( team == bTeam && weaponDisplays ) ) && wantsToSee )
       {
         if( i >= 32 )
-          e->rangeMarker->r.hiMask |= 1 << ( i - 32 );
+          e->rangeMarker->r.compat.generic1 |= 1 << ( i - 32 );
         else
           e->rangeMarker->r.singleClient |= 1 << i;
       }