Expose more game state information to DiscordRPC (#869)

When playing Frontier Defense it will show when the player is in a Wave Break or which Wave they are currently through
Whenever the server is NOT at the Playing gamestate, the plugin will report the respective states instead such as Selecting Titan screen, Prematch, Epilogue, Postmatch, etc...

Northstar.Client/mod/scripts/vscripts/cl_northstar_client_init.nut

@@ -20,6 +20,9 @@ global struct GameStateStruct {
     int otherHighestScore
     int maxScore
     float timeEnd
+    int serverGameState
+    int fd_waveNumber
+    int fd_totalWaves
 }
 
 global struct UIPresenceStruct {

Northstar.Client/mod/scripts/vscripts/presence/cl_presence.nut

@@ -30,6 +30,19 @@ GameStateStruct function DiscordRPC_GenerateGameState( GameStateStruct gs )
     if ( IsValid( GetLocalClientPlayer() ) )
 		gs.ownScore = GameRules_GetTeamScore( GetLocalClientPlayer().GetTeam() )
 
+    if ( GameRules_GetGameMode() == FD )
+    {
+        gs.playlist = "fd" // So it returns only one thing to the plugin side instead of the 5 separate difficulties FD have
+        if ( GetGlobalNetInt( "FD_waveState" ) == WAVE_STATE_INCOMING || GetGlobalNetInt( "FD_waveState" ) == WAVE_STATE_IN_PROGRESS )
+        {
+            gs.fd_waveNumber = GetGlobalNetInt( "FD_currentWave" ) + 1
+            gs.fd_totalWaves = GetGlobalNetInt( "FD_totalWaves" )
+        }
+        else
+            gs.fd_waveNumber = -1 // Tells plugin it's on Wave Break
+    }
+
+    gs.serverGameState = GetGameState() == -1 ? 0 : GetGameState()
     gs.otherHighestScore = gs.ownScore == highestScore ? secondHighest : highestScore
 
     gs.maxScore = IsRoundBased() ? GetCurrentPlaylistVarInt( "roundscorelimit", 0 ) : GetCurrentPlaylistVarInt( "scorelimit", 0 )