Fix possible NPE and the forge-server instance never being initialized

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/live/LiveAPIRequestHandler.java

@@ -100,6 +100,7 @@ public HttpResponse handlePlayersRequest(HttpRequest request) {
 			json.beginObject();
 			json.name("players").beginArray();
 			for (Player player : server.getOnlinePlayers()) {
+				if (!player.isOnline()) continue;
 				
 				if (config.isHideInvisible() && player.isInvisible()) continue;
 				if (config.isHideSneaking() && player.isSneaking()) continue;
@@ -116,6 +117,7 @@ public HttpResponse handlePlayersRequest(HttpRequest request) {
 				json.endObject();
 				json.endObject();
 			}
+			
 			json.endArray();
 			json.endObject();
 		

implementations/fabric-1.15.2/src/main/java/de/bluecolored/bluemap/fabric/FabricPlayer.java

@@ -129,6 +129,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameMode());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		StatusEffectInstance invis = player.getStatusEffect(StatusEffects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/fabric-1.16.1/src/main/java/de/bluecolored/bluemap/fabric/FabricPlayer.java

@@ -129,6 +129,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameMode());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		StatusEffectInstance invis = player.getStatusEffect(StatusEffects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/fabric-1.16.2/src/main/java/de/bluecolored/bluemap/fabric/FabricPlayer.java

@@ -129,6 +129,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameMode());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		StatusEffectInstance invis = player.getStatusEffect(StatusEffects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/forge-1.14.4/src/main/java/de/bluecolored/bluemap/forge/ForgePlayer.java

@@ -129,6 +129,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameType());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		EffectInstance invis = player.getActivePotionEffect(Effects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/forge-1.15.2/src/main/java/de/bluecolored/bluemap/forge/ForgePlayer.java

@@ -129,6 +129,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameType());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		EffectInstance invis = player.getActivePotionEffect(Effects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/forge-1.16.2/src/main/java/de/bluecolored/bluemap/forge/ForgeMod.java

@@ -98,12 +98,13 @@ public ForgeMod() {
 	@SubscribeEvent
     public void onServerStarting(FMLServerStartingEvent event) {
 		this.worldUUIDs.clear();
+		this.serverInstance = event.getServer();
 
 		//register commands
 		new Commands<>(pluginInstance, event.getServer().getCommandManager().getDispatcher(), forgeSource -> new ForgeCommandSource(this, pluginInstance, forgeSource));
 
 		//save worlds to generate level.dat files
-		event.getServer().save(false, true, true);
+		serverInstance.save(false, true, true);
 		
 		new Thread(() -> {
 			Logger.global.logInfo("Loading...");

implementations/forge-1.16.2/src/main/java/de/bluecolored/bluemap/forge/ForgePlayer.java

@@ -128,6 +128,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.interactionManager.getGameType());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		EffectInstance invis = player.getActivePotionEffect(Effects.INVISIBILITY);
 		this.invisible = invis != null && invis.getDuration() > 0;

implementations/spigot/src/main/java/de/bluecolored/bluemap/bukkit/BukkitPlayer.java

@@ -114,6 +114,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.getGameMode());
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		this.invisible = player.hasPotionEffect(PotionEffectType.INVISIBILITY);
 		

implementations/sponge-7.2.0/src/main/java/de/bluecolored/bluemap/sponge/SpongePlayer.java

@@ -119,6 +119,7 @@ public void update() {
 		}
 		
 		this.gamemode = GAMEMODE_MAP.get(player.get(Keys.GAME_MODE).orElse(GameModes.NOT_SET));
+		if (this.gamemode == null) this.gamemode = Gamemode.SURVIVAL;
 		
 		boolean invis = player.get(Keys.VANISH).orElse(false);
 		if (!invis && player.get(Keys.INVISIBLE).orElse(false)) invis = true;