Add /tpslimit Command

BauSystem_Main/src/de/steamwar/bausystem/BauSystem.java

@@ -98,6 +98,8 @@ public class BauSystem extends JavaPlugin implements Listener {
 
         getCommand("trace").setExecutor(new CommandTrace());
         getCommand("trace").setTabCompleter(new CommandTraceTabCompleter());
+        getCommand("tpslimit").setExecutor(new CommandTPSLimiter());
+        getCommand("tpslimit").setTabCompleter(new CommandTPSLimiterTabComplete());
         getCommand("nightvision").setExecutor(new CommandNV());
         getCommand("reset").setExecutor(new CommandReset());
         getCommand("speed").setExecutor(new CommandSpeed());

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTPSLimiter.java

@@ -0,0 +1,100 @@
+package de.steamwar.bausystem.commands;
+
+import de.steamwar.bausystem.BauSystem;
+import net.md_5.bungee.api.ChatMessageType;
+import net.md_5.bungee.api.chat.TextComponent;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.Particle;
+import org.bukkit.World;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.TNTPrimed;
+
+public class CommandTPSLimiter implements CommandExecutor {
+
+    private static int currentTPSLimit = 20;
+    private static World world = Bukkit.getWorlds().get(0);
+    private long lastTime = System.currentTimeMillis();
+    private long currentTime = System.currentTimeMillis();
+
+    public CommandTPSLimiter() {
+        Bukkit.getScheduler().runTaskTimer(BauSystem.getPlugin(), () -> {
+            lastTime = currentTime;
+            currentTime = System.currentTimeMillis();
+
+            long timeDelta = currentTime - lastTime;
+            long neededDelta = 1000 / currentTPSLimit;
+
+            if (neededDelta - timeDelta < 1) {
+                return;
+            }
+
+            try {
+                Thread.sleep(neededDelta - timeDelta);
+                currentTime = System.currentTimeMillis();
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        }, 0, 1);
+        Bukkit.getScheduler().runTaskTimer(BauSystem.getPlugin(), () -> {
+           if (currentTPSLimit == 20) {
+               return;
+           }
+
+           world.getEntities().stream().filter(entity -> entity instanceof TNTPrimed).forEach(entity -> {
+               Location location = entity.getLocation();
+               world.spawnParticle(Particle.BARRIER, location.getX(), location.getY() + 0.49, location.getZ(), 1);
+           });
+        }, 0, 1);
+    }
+
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        if (!(sender instanceof Player)) {
+            return false;
+        } else if (args.length == 0) {
+            sender.sendMessage(BauSystem.PREFIX + "Jetziges TPS limit: " + currentTPSLimit);
+            sender.sendMessage(BauSystem.PREFIX + "Ändere das TPS limit mit: §8/§etpslimit §8[§7TPS§8|§edefault§8]");
+            return false;
+        }
+        Player player = (Player) sender;
+
+        String tpsLimit = args[0];
+        if (tpsLimit.equals("default")) {
+            currentTPSLimit = 20;
+            sendNewTPSLimitMessage(player);
+            return false;
+        }
+
+        try {
+            int tpsLimitInt = Integer.parseInt(tpsLimit);
+            if (tpsLimitInt < 1 || tpsLimitInt > 20) {
+                sendInvalidArgumentMessage(player);
+                return false;
+            }
+            currentTPSLimit = tpsLimitInt;
+            sendNewTPSLimitMessage(player);
+        } catch (NumberFormatException e) {
+            sendInvalidArgumentMessage(player);
+        }
+
+        return false;
+    }
+
+    private void sendNewTPSLimitMessage(Player player) {
+        player.sendMessage(BauSystem.PREFIX + "TPS limit auf " + currentTPSLimit + " gesetzt.");
+        Bukkit.getOnlinePlayers().forEach(p -> p.spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText("§eTPS limit auf " + currentTPSLimit + " gesetzt.")));
+    }
+
+    private void sendInvalidArgumentMessage(Player player) {
+        player.sendMessage(BauSystem.PREFIX + "Nur Zahlen zwischen 1 und 20, und 'default' erlaubt.");
+    }
+
+    public static int getCurrentTPSLimit() {
+        return currentTPSLimit;
+    }
+
+}

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTPSLimiterTabComplete.java

@@ -0,0 +1,29 @@
+package de.steamwar.bausystem.commands;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabCompleter;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class CommandTPSLimiterTabComplete implements TabCompleter {
+
+    private List<String> arguments = Arrays.asList("default", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20");
+
+    @Override
+    public List<String> onTabComplete(CommandSender sender, Command command, String label, String[] args) {
+        if (args.length != 1) {
+            return new ArrayList<>();
+        }
+        List<String> validArguments = new ArrayList<>(arguments.size());
+        for (String s : arguments) {
+            if (s.startsWith(args[0])) {
+                validArguments.add(s);
+            }
+        }
+        return validArguments;
+    }
+
+}

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTraceTabCompleter.java

@@ -20,7 +20,6 @@
 package de.steamwar.bausystem.commands;
 
 import de.steamwar.bausystem.tracer.recorder.RecordManager;
-import de.steamwar.core.Core;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.TabCompleter;

BauSystem_Main/src/de/steamwar/bausystem/world/BauScoreboard.java

@@ -21,6 +21,7 @@ package de.steamwar.bausystem.world;
 
 import de.steamwar.bausystem.commands.CommandFreeze;
 import de.steamwar.bausystem.commands.CommandTNT;
+import de.steamwar.bausystem.commands.CommandTPSLimiter;
 import de.steamwar.bausystem.tracer.TraceManager;
 import de.steamwar.bausystem.tracer.recorder.RecordManager;
 import de.steamwar.bausystem.tracer.recorder.TNTRecorder;
@@ -72,7 +73,11 @@ public class BauScoreboard implements Listener {
         }
 
         strings.add("§4");
+        if (CommandTPSLimiter.getCurrentTPSLimit() == 20) {
             strings.add("§eTPS§8: §7" + TPSWatcher.getTPS());
+        } else {
+            strings.add("§eTPS§8: §7" + TPSWatcher.getTPS() + "   §eLimit§8: §7" + CommandTPSLimiter.getCurrentTPSLimit());
+        }
 
         int i = strings.size();
         HashMap<String, Integer> result = new HashMap<>();

BauSystem_Main/src/plugin.yml

@@ -11,6 +11,7 @@ commands:
   tnt:
   fire:
   trace:
+  tpslimit:
   testblock:
     aliases: tb
   reset: