Do not show offline markers for BM hidden players

Closes #24

Author: TechnicJelle

README.md

@@ -13,13 +13,17 @@ Compatible with Paper 1.13+, just like BlueMap itself.
 
 To reload this plugin, just reload BlueMap itself with `/bluemap reload`.
 
+If you want specific players to not get offline markers, you can hide them from BlueMap
+by using a plugin like [BlueMapPlayerControl](https://github.com/TechnicJelle/BlueMapPlayerControl) (also by me).
+
 ## [Click here to download!](../../releases/latest)
 
 ## [TODO list](../../projects/1?fullscreen=true)
 
 ## Support
 
-To get support with this plugin, join the [BlueMap Discord server](https://bluecolo.red/map-discord) and ask your questions in [#3rd-party-support](https://discord.com/channels/665868367416131594/863844716047106068). You're welcome to ping me, @TechnicJelle.
+To get support with this plugin, join the [BlueMap Discord server](https://bluecolo.red/map-discord)
+and ask your questions in [#3rd-party-support](https://discord.com/channels/665868367416131594/863844716047106068). You're welcome to ping me, @TechnicJelle.
 
 ## Special thanks to
 

src/main/java/com/technicjelle/bluemapofflineplayermarkers/MarkerHandler.java

@@ -18,8 +18,6 @@
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
-import java.text.SimpleDateFormat;
-import java.util.Date;
 import java.util.List;
 import java.util.Optional;
 import java.util.UUID;
@@ -55,6 +53,9 @@ public static void add(OfflinePlayer player, Location location) {
 		}
 		BlueMapAPI api = optionalApi.get();
 
+		//If this player's visibility is disabled on the map, don't add the marker.
+		if (!api.getWebApp().getPlayerVisibility(player.getUniqueId())) return;
+
 		// Get BlueMapWorld for the location
 		BlueMapWorld blueMapWorld = api.getWorld(location.getWorld()).orElse(null);
 		if (blueMapWorld == null) return;