Added world change listener for random spawning on world change.

plugins/randomspawn-paper/Random Spawn/src/me/Josvth/RandomSpawn/Listeners/WorldChangeListener.java

@@ -0,0 +1,87 @@
+package me.Josvth.RandomSpawn.Listeners;
+
+import java.util.List;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.World.Environment;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerChangedWorldEvent;
+import org.bukkit.metadata.FixedMetadataValue;
+
+import me.Josvth.RandomSpawn.RandomSpawn;
+
+public class WorldChangeListener {
+	
+	RandomSpawn plugin;
+	
+	public WorldChangeListener(RandomSpawn instance){
+		plugin = instance;
+	}
+	
+	public void onPlayerWorldChange(PlayerChangedWorldEvent event){
+			
+		Player player = event.getPlayer();
+		String playerName = player.getName();
+				
+		if (player.hasPermission("RandomSpawn.exclude")){ 																// checks if player should be excluded
+			plugin.logDebug(playerName + " is excluded from Random Spawning.");
+			return; 
+		}
+				
+		World from = event.getFrom();
+		World to = event.getPlayer().getWorld();
+		
+		List<String> randomSpawnFlags = plugin.yamlHandler.worlds.getStringList(to.getName() + ".randomspawnon");
+		
+		if(randomSpawnFlags.contains("from-any-world")){
+			randomSpawnPlayerInWorld(event.getPlayer(), to);
+		}
+		
+		if(to.getEnvironment().equals(Environment.NORMAL)){	// player going to a normal world
+			
+			World nether = plugin.getServer().getWorld(to.getName()+"_nether");
+			World end = plugin.getServer().getWorld(to.getName()+"_the_end");
+			
+			if(from.equals(nether)) {		// player coming from own nether
+				if(randomSpawnFlags.contains("teleport-from-own-nether")){
+					randomSpawnPlayerInWorld(event.getPlayer(), to);
+				}
+			}else if(from.equals(end)){		// player coming from own end
+				if(randomSpawnFlags.contains("teleport-from-own-end")){
+					randomSpawnPlayerInWorld(event.getPlayer(), to);
+				}
+			}
+		}else if(to.getEnvironment().equals(Environment.NETHER)){
+			World normal = plugin.getServer().getWorld(to.getName().replaceAll("[_nether]",""));
+			if(from.equals(normal)){
+				if(randomSpawnFlags.contains("teleport-from-overworld")){
+					randomSpawnPlayerInWorld(event.getPlayer(), to);
+				}
+			}
+		}else if(to.getEnvironment().equals(Environment.THE_END)){
+			World normal = plugin.getServer().getWorld(to.getName().replaceAll("[_the_end]",""));
+			if(from.equals(normal)){
+				if(randomSpawnFlags.contains("teleport-from-overworld")){
+					randomSpawnPlayerInWorld(event.getPlayer(), to);
+				}
+			}
+		}
+	}
+	
+	public void randomSpawnPlayerInWorld(Player player, World world){
+		
+		Location spawnLocation = plugin.chooseSpawn(world);
+		
+		plugin.sendGround(player, spawnLocation);
+		
+		player.teleport(spawnLocation);
+		
+		player.setMetadata("lasttimerandomspawned", new FixedMetadataValue(plugin, System.currentTimeMillis()));
+					
+		if (plugin.yamlHandler.config.getString("messages.randomspawned") != null){
+			player.sendMessage(plugin.yamlHandler.config.getString("messages.randomspawned"));
+		}
+		
+	}
+}