Update SimulatorExecutor and fix many bugs

BauSystem_15/src/de/steamwar/bausystem/utils/TickListener15.java

@@ -0,0 +1,23 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+public class TickListener15 implements TickListener {
+}

BauSystem_19/build.gradle

@@ -51,6 +51,7 @@ dependencies {
     implementation project(":BauSystem_Main")
 
     compileOnly 'org.spigotmc:spigot-api:1.19-R0.1-SNAPSHOT'
+    compileOnly 'io.papermc.paper:paper-api:1.19.2-R0.1-SNAPSHOT'
     compileOnly 'it.unimi.dsi:fastutil:8.5.6'
     compileOnly 'com.mojang:datafixerupper:4.0.26'
     compileOnly 'io.netty:netty-all:4.1.68.Final'

BauSystem_19/src/de/steamwar/bausystem/utils/TickListener19.java

@@ -0,0 +1,51 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+import com.destroystokyo.paper.event.server.ServerTickEndEvent;
+import com.destroystokyo.paper.event.server.ServerTickStartEvent;
+import de.steamwar.bausystem.BauSystem;
+import de.steamwar.bausystem.features.tpslimit.TPSFreezeUtils;
+import org.bukkit.Bukkit;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+
+public class TickListener19 implements TickListener, Listener {
+
+    private boolean tickStartRan = false;
+
+    public TickListener19() {
+        Bukkit.getPluginManager().registerEvents(this, BauSystem.getInstance());
+    }
+
+    @EventHandler
+    public void onServerTickStart(ServerTickStartEvent event) {
+        if (TPSFreezeUtils.isFrozen()) return;
+        Bukkit.getPluginManager().callEvent(new TickStartEvent());
+        tickStartRan = true;
+    }
+
+    @EventHandler
+    public void onServerTickEnd(ServerTickEndEvent event) {
+        if (!tickStartRan) return;
+        Bukkit.getPluginManager().callEvent(new TickEndEvent());
+        tickStartRan = false;
+    }
+}

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

@@ -27,6 +27,7 @@ import de.steamwar.bausystem.linkage.LinkageUtils;
 import de.steamwar.bausystem.region.loader.PrototypeLoader;
 import de.steamwar.bausystem.region.loader.RegionLoader;
 import de.steamwar.bausystem.region.loader.Updater;
+import de.steamwar.bausystem.utils.TickListener;
 import de.steamwar.bausystem.worlddata.WorldData;
 import de.steamwar.message.Message;
 import lombok.Getter;
@@ -76,6 +77,7 @@ public class BauSystem extends JavaPlugin implements Listener {
 
         LinkageUtils.link();
         RamUsage.init();
+        TickListener.impl.init();
 
         // This could disable any watchdog stuff. We need to investigate if this is a problem.
         /*

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/SimulatorCommand.java

@@ -30,12 +30,14 @@ import de.steamwar.command.TypeMapper;
 import de.steamwar.command.TypeValidator;
 import de.steamwar.linkage.Linked;
 import de.steamwar.linkage.LinkedInstance;
+import de.steamwar.linkage.MinVersion;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
 import java.util.Collection;
 
 @Linked
+@MinVersion(19)
 public class SimulatorCommand extends SWCommand {
 
     @LinkedInstance

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/SimulatorCursor.java

@@ -41,6 +41,7 @@ import de.steamwar.entity.REntityServer;
 import de.steamwar.entity.RFallingBlockEntity;
 import de.steamwar.inventory.SWAnvilInv;
 import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.MinVersion;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import org.bukkit.Bukkit;
@@ -66,6 +67,7 @@ import java.util.function.Function;
 import java.util.stream.Collectors;
 
 @Linked
+@MinVersion(19)
 public class SimulatorCursor implements Listener {
 
     private final World WORLD = Bukkit.getWorlds().get(0);
@@ -366,7 +368,7 @@ public class SimulatorCursor implements Listener {
         if (rayTraceResult.getHitEntity() != null) {
             REntity hitEntity = rayTraceResult.getHitEntity();
             Vector vector = new Vector(hitEntity.getX(), hitEntity.getY(), hitEntity.getZ());
-            List<SimulatorElement<?>> elements = simulator.getElements().stream().map(SimulatorGroup::getElements).flatMap(List::stream).filter(element -> {
+            List<SimulatorElement<?>> elements = simulator.getGroups().stream().map(SimulatorGroup::getElements).flatMap(List::stream).filter(element -> {
                 return element.getWorldPos().distanceSquared(vector) < (1 / 16.0) * (1 / 16.0);
             }).collect(Collectors.toList());
 
@@ -414,7 +416,7 @@ public class SimulatorCursor implements Listener {
         }
         SimulatorElement<?> element = type.elementFunction.apply(vector);
         SimulatorGroup group = new SimulatorGroup().add(element);
-        simulator.getElements().add(group);
+        simulator.getGroups().add(group);
         SimulatorGui simulatorGui = new SimulatorGui(player, simulator);
         element.open(player, simulator, group, simulatorGui);
         SimulatorWatcher.update(simulator);

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/SimulatorStorage.java

@@ -31,6 +31,7 @@ import de.steamwar.bausystem.features.simulator.storage.YAPIONFormatSimulatorLoa
 import de.steamwar.bausystem.utils.ItemUtils;
 import de.steamwar.inventory.SWItem;
 import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.MinVersion;
 import de.steamwar.linkage.api.Enable;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
@@ -44,6 +45,7 @@ import java.io.IOException;
 import java.util.*;
 
 @Linked
+@MinVersion(19)
 public class SimulatorStorage implements Enable {
 
     public static final File simulatorsDir = new File(Bukkit.getWorlds().get(0).getWorldFolder(), "simulators");

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/SimulatorWatcher.java

@@ -28,6 +28,7 @@ import de.steamwar.entity.REntity;
 import de.steamwar.entity.REntityServer;
 import de.steamwar.entity.RFallingBlockEntity;
 import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.MinVersion;
 import lombok.experimental.UtilityClass;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
@@ -73,6 +74,7 @@ public class SimulatorWatcher {
     }
 
     @Linked
+    @MinVersion(19)
     public static class QuitListener implements Listener {
 
         @EventHandler
@@ -87,7 +89,7 @@ public class SimulatorWatcher {
             return null;
         }
         Map<Vector, Set<Class<?>>> positionCache = new HashMap<>();
-        simulator.getElements().stream().map(group -> group.getElements().stream().map(element -> new Pair<>(group, element)).collect(Collectors.toList())).flatMap(List::stream).forEach(pair -> {
+        simulator.getGroups().stream().map(group -> group.getElements().stream().map(element -> new Pair<>(group, element)).collect(Collectors.toList())).flatMap(List::stream).forEach(pair -> {
             SimulatorGroup group = pair.getKey();
             SimulatorElement<?> element = pair.getValue();
 

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/Simulator.java

@@ -31,6 +31,7 @@ import org.bukkit.entity.Player;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.function.BiConsumer;
 
 @Getter
 @Setter
@@ -39,10 +40,10 @@ public final class Simulator {
     private Material material = Material.BARREL;
     private final String name;
     private boolean autoTrace = false;
-    private final List<SimulatorGroup> elements = new ArrayList<>();
+    private final List<SimulatorGroup> groups = new ArrayList<>();
 
     public void move(int x, int y, int z) {
-        elements.forEach(simulatorGroup -> {
+        groups.forEach(simulatorGroup -> {
             simulatorGroup.move(x, y, z);
         });
     }
@@ -51,14 +52,14 @@ public final class Simulator {
         return new SWItem(material, "§e" + name, invCallback);
     }
 
-    public void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions) {
-        elements.forEach(simulatorGroup -> {
-            simulatorGroup.toSimulatorActions(actions);
+    public void toSimulatorActions(BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd) {
+        groups.forEach(simulatorGroup -> {
+            simulatorGroup.toSimulatorActions(tickStart, tickEnd);
         });
     }
 
     public Simulator add(SimulatorGroup group) {
-        elements.add(group);
+        groups.add(group);
         return this;
     }
 }

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/SimulatorElement.java

@@ -34,6 +34,7 @@ import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
+import java.util.function.BiConsumer;
 
 @Getter
 @Setter
@@ -101,17 +102,17 @@ public abstract class SimulatorElement<T extends SimulatorPhase> {
         return new SWItem(material, "§e" + getName(player), lore, disabled, invCallback);
     }
 
-    public void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions) {
+    public void toSimulatorActions(BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd) {
         if (disabled) return;
         phases.forEach(phase -> {
-            phase.toSimulatorActions(actions, position.clone());
+            phase.toSimulatorActions(position.clone(), tickStart, tickEnd);
         });
     }
 
     public abstract void open(Player player, Simulator simulator, SimulatorGroup group, SimulatorBaseGui back);
 
     public SimulatorGroup getGroup(Simulator simulator) {
-        return simulator.getElements().stream()
+        return simulator.getGroups().stream()
                 .filter(simulatorGroup -> simulatorGroup.getElements().contains(this))
                 .findFirst()
                 .orElse(null);

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/SimulatorGroup.java

@@ -31,6 +31,7 @@ import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
+import java.util.function.BiConsumer;
 
 @Getter
 @Setter
@@ -40,7 +41,9 @@ public final class SimulatorGroup {
     private final List<SimulatorElement<?>> elements = new ArrayList<>();
 
     public SimulatorGroup add(SimulatorElement<?> element) {
+        if (!elements.contains(element)) {
             elements.add(element);
+        }
         return this;
     }
 
@@ -82,10 +85,10 @@ public final class SimulatorGroup {
         }
     }
 
-    public void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions) {
+    public void toSimulatorActions(BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd) {
         if (disabled) return;
         elements.forEach(simulatorElement -> {
-            simulatorElement.toSimulatorActions(actions);
+            simulatorElement.toSimulatorActions(tickStart, tickEnd);
         });
     }
 }

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/SimulatorPhase.java

@@ -27,6 +27,7 @@ import yapion.hierarchy.types.YAPIONObject;
 
 import java.util.List;
 import java.util.Map;
+import java.util.function.BiConsumer;
 
 @Getter
 @Setter
@@ -37,7 +38,7 @@ public abstract class SimulatorPhase {
     protected int lifetime = 80;
     protected int order = 0;
 
-    public abstract void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions, Vector position);
+    public abstract void toSimulatorActions(Vector position, BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd);
     public void saveExtra(YAPIONObject phaseObject) {}
     public void loadExtra(YAPIONObject phaseObject) {}
 }

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/redstone/RedstonePhase.java

@@ -20,6 +20,7 @@
 
 package de.steamwar.bausystem.features.simulator.data.redstone;
 
+import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.features.simulator.data.SimulatorPhase;
 import de.steamwar.bausystem.features.simulator.execute.SimulatorAction;
 import lombok.NoArgsConstructor;
@@ -33,6 +34,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.BiConsumer;
 
 @NoArgsConstructor
 public final class RedstonePhase extends SimulatorPhase {
@@ -46,30 +48,26 @@ public final class RedstonePhase extends SimulatorPhase {
     }
 
     @Override
-    public void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions, Vector position) {
-        AtomicReference<BlockState> previousBlockState = new AtomicReference<>();
-        actions.computeIfAbsent(tickOffset, __ -> new ArrayList<>())
-                .add(new SimulatorAction(0, 1) {
+    public void toSimulatorActions(Vector position, BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd) {
+        AtomicReference<BlockState> blockState = new AtomicReference<>();
+        tickStart.accept(tickOffset, new SimulatorAction(order, 1) {
             @Override
             public void accept(World world) {
-                        // TODO: 0 Tick Pistons not working
                 Block block = world.getBlockAt(position.getBlockX(), position.getBlockY(), position.getBlockZ());
-                        previousBlockState.set(block.getState());
+                blockState.set(block.getState());
                 block.setType(Material.REDSTONE_BLOCK);
-                        if (lifetime == 0) {
-                            previousBlockState.get().update(true, true);
-                        }
             }
         });
-
-        if (lifetime == 0) {
-            return;
-        }
-        actions.computeIfAbsent(tickOffset + lifetime, __ -> new ArrayList<>())
-                .add(new SimulatorAction(0, 1) {
+        tickEnd.accept(tickOffset + lifetime, new SimulatorAction(0, 1) {
             @Override
             public void accept(World world) {
-                        previousBlockState.get().update(true, true);
+                BlockState state = blockState.get();
+                if (state != null) {
+                    state.update(true, true);
+                } else {
+                    Block block = world.getBlockAt(position.getBlockX(), position.getBlockY(), position.getBlockZ());
+                    block.setType(Material.AIR);
+                }
             }
         });
     }

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/data/tnt/TNTPhase.java

@@ -32,6 +32,7 @@ import yapion.hierarchy.types.YAPIONObject;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.function.BiConsumer;
 
 @Getter
 @Setter
@@ -57,8 +58,8 @@ public final class TNTPhase extends SimulatorPhase {
     }
 
     @Override
-    public void toSimulatorActions(Map<Integer, List<SimulatorAction>> actions, Vector position) {
-        actions.computeIfAbsent(tickOffset, __ -> new ArrayList<>()).add(new SimulatorAction(order, count) {
+    public void toSimulatorActions(Vector position, BiConsumer<Integer, SimulatorAction> tickStart, BiConsumer<Integer, SimulatorAction> tickEnd) {
+        tickStart.accept(tickOffset, new SimulatorAction(order, count) {
             @Override
             public void accept(World world) {
                 TNTPrimed tnt = world.spawn(position.toLocation(world), TNTPrimed.class);

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/execute/SimulatorExecutor.java

@@ -19,63 +19,88 @@
 
 package de.steamwar.bausystem.features.simulator.execute;
 
-import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.features.simulator.data.Simulator;
-import lombok.experimental.UtilityClass;
+import de.steamwar.bausystem.features.tpslimit.TPSUtils;
+import de.steamwar.bausystem.utils.TickEndEvent;
+import de.steamwar.bausystem.utils.TickStartEvent;
+import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.MinVersion;
 import org.bukkit.Bukkit;
 import org.bukkit.World;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
 
 import java.util.*;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
 
-@UtilityClass
-public class SimulatorExecutor {
+@Linked
+@MinVersion(19)
+public class SimulatorExecutor implements Listener {
 
     private static final World WORLD = Bukkit.getWorlds().get(0);
     private static Set<Simulator> currentlyRunning = new HashSet<>();
+    private static Map<Long, Map<Integer, List<SimulatorAction>>> tickStartActions = new HashMap<>();
+    private static Map<Long, List<SimulatorAction>> tickEndActions = new HashMap<>();
 
-    public boolean run(Simulator simulator) {
+    public static boolean run(Simulator simulator) {
         if (currentlyRunning.contains(simulator)) return false;
+        currentlyRunning.add(simulator);
 
-        Map<Integer, List<SimulatorAction>> map = new HashMap<>();
-        simulator.toSimulatorActions(map);
-
-        Map<Integer, Map<Integer, List<SimulatorAction>>> actions = new HashMap<>();
-        map.forEach((integer, simulatorActions) -> {
-            simulatorActions.forEach(simulatorAction -> {
-                actions.computeIfAbsent(integer, __ -> new HashMap<>()).computeIfAbsent(simulatorAction.getOrder(), __ -> new ArrayList<>()).add(simulatorAction);
-            });
+        long currentTick = TPSUtils.currentRealTick.get();
+        AtomicLong lastTick = new AtomicLong();
+        simulator.toSimulatorActions((tickOffset, simulatorAction) -> {
+            lastTick.set(Math.max(lastTick.get(), tickOffset));
+            tickStartActions.computeIfAbsent(currentTick + tickOffset, __ -> new HashMap<>())
+                    .computeIfAbsent(simulatorAction.getOrder(), __ -> new ArrayList<>())
+                    .add(simulatorAction);
+        }, (tickOffset, simulatorAction) -> {
+            lastTick.set(Math.max(lastTick.get(), tickOffset));
+            tickEndActions.computeIfAbsent(currentTick + tickOffset, __ -> new ArrayList<>())
+                    .add(simulatorAction);
         });
 
-        AtomicInteger tick = new AtomicInteger();
-        BauSystem.runTaskTimer(BauSystem.getInstance(), bukkitTask -> {
-            if (actions.isEmpty()) {
-                bukkitTask.cancel();
+        tickEndActions.computeIfAbsent(currentTick + lastTick.get() + 4, __ -> new ArrayList<>())
+                .add(new SimulatorAction(0, 1) {
+                    @Override
+                    public void accept(World world) {
                         currentlyRunning.remove(simulator);
-                return;
+                    }
+                });
+        return true;
     }
 
-            int currentTick = tick.getAndIncrement();
-            Map<Integer, List<SimulatorAction>> actionsToRun = actions.remove(currentTick);
+    @EventHandler
+    public void onTickStart(TickStartEvent event) {
+        long currentTick = TPSUtils.currentRealTick.get();
+        Map<Integer, List<SimulatorAction>> actionsToRun = tickStartActions.remove(currentTick);
         if (actionsToRun == null) return;
+
         List<Integer> keys = new ArrayList<>(actionsToRun.keySet());
         keys.sort(null);
-
         for (int actionKey : keys) {
-                List<SimulatorAction> keyedActions = actionsToRun.get(actionKey);
-                while (!keyedActions.isEmpty()) {
-                    Collections.shuffle(keyedActions);
-                    for (int i = keyedActions.size() - 1 ; i >= 0; i--) {
-                        SimulatorAction action = keyedActions.get(i);
+            runActions(actionsToRun.get(actionKey));
+        }
+    }
+
+    @EventHandler
+    public void onTickEnd(TickEndEvent event) {
+        long currentTick = TPSUtils.currentRealTick.get() - 1;
+        List<SimulatorAction> actionsToRun = tickEndActions.remove(currentTick);
+        if (actionsToRun == null) return;
+        runActions(actionsToRun);
+    }
+
+    private void runActions(List<SimulatorAction> actionsToRun) {
+        while (!actionsToRun.isEmpty()) {
+            Collections.shuffle(actionsToRun);
+            for (int i = actionsToRun.size() - 1 ; i >= 0; i--) {
+                SimulatorAction action = actionsToRun.get(i);
                 action.accept(WORLD);
                 action.setCount(action.getCount() - 1);
                 if (action.getCount() == 0) {
-                            keyedActions.remove(i);
+                    actionsToRun.remove(i);
                 }
             }
         }
     }
-        }, 0, 1);
-        return true;
-    }
 }

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/SimulatorGroupChooserGui.java

@@ -39,7 +39,7 @@ public class SimulatorGroupChooserGui extends SimulatorPageGui<SimulatorGroup> {
     private final SimulatorBaseGui back;
 
     public SimulatorGroupChooserGui(Player player, Simulator simulator, SimulatorElement<?> subject, SimulatorGroup parent, SimulatorBaseGui back) {
-        super(player, simulator, 6 * 9, simulator.getElements().stream().filter(e -> e != parent).collect(Collectors.toList()));
+        super(player, simulator, 6 * 9, simulator.getGroups().stream().filter(e -> e != parent).collect(Collectors.toList()));
         this.subject = subject;
         this.parent = parent;
         this.back = back;
@@ -53,7 +53,7 @@ public class SimulatorGroupChooserGui extends SimulatorPageGui<SimulatorGroup> {
             inventory.setItem(49, new SWItem(Material.BARRIER, "§cRemove from Group", clickType -> {
                 SimulatorGroup newParent = new SimulatorGroup();
                 newParent.add(subject);
-                simulator.getElements().add(newParent);
+                simulator.getGroups().add(newParent);
                 parent.getElements().remove(subject);
                 back.open();
                 SimulatorWatcher.update(simulator);

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/SimulatorGui.java

@@ -31,7 +31,7 @@ import org.bukkit.entity.Player;
 public class SimulatorGui extends SimulatorPageGui<SimulatorGroup> {
 
     public SimulatorGui(Player player, Simulator simulator) {
-        super(player, simulator, 6 * 9, simulator.getElements());
+        super(player, simulator, 6 * 9, simulator.getGroups());
     }
 
     @Override
@@ -41,7 +41,7 @@ public class SimulatorGui extends SimulatorPageGui<SimulatorGroup> {
 
     @Override
     public void headerAndFooter() {
-        if (simulator.getElements().removeIf(element -> element.getElements().isEmpty() || element.getElements().stream().allMatch(simulatorElement -> simulatorElement.getPhases().isEmpty()))) {
+        if (simulator.getGroups().removeIf(element -> element.getElements().isEmpty() || element.getElements().stream().allMatch(simulatorElement -> simulatorElement.getPhases().isEmpty()))) {
             SimulatorWatcher.update(simulator);
         }
 

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/SimulatorTNTSettingsGui.java

@@ -32,7 +32,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-public class SimulatorTNTSettingsGui extends SimulatorBaseGui {
+public class SimulatorTNTSettingsGui extends SimulatorBaseGui { // TODO: Anvil GUI's!
     private final TNTElement tnt;
     private final SimulatorBaseGui back;
 

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/storage/SimFormatSimulatorLoader.java

@@ -83,8 +83,8 @@ public class SimFormatSimulatorLoader implements SimulatorLoader {
         elements.streamObject().forEach(elementObject -> {
             SimulatorElement<?> element;
             Supplier<SimulatorPhase> phaseConstructor;
-            Vector position = new Vector(groupObject.getDouble("x"), groupObject.getDouble("y"), groupObject.getDouble("z"));
-            String type = groupObject.getPlainValue("type");
+            Vector position = new Vector(elementObject.getDouble("x"), elementObject.getDouble("y"), elementObject.getDouble("z"));
+            String type = elementObject.getPlainValue("type");
             switch (type) {
                 case "TNT":
                     element = new TNTElement(position);

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/storage/SimulatorSaver.java

@@ -37,7 +37,7 @@ public class SimulatorSaver {
         simulatorObject.add("autoTrace", simulator.isAutoTrace());
 
         YAPIONArray groups = new YAPIONArray();
-        simulator.getElements().forEach(group -> {
+        simulator.getGroups().forEach(group -> {
             YAPIONObject groupObject = new YAPIONObject();
             groupObject.add("material", group.getMaterial().name());
             groupObject.add("disabled", group.isDisabled());

BauSystem_Main/src/de/steamwar/bausystem/utils/TickEndEvent.java

@@ -0,0 +1,36 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+public class TickEndEvent extends Event {
+
+    private static final HandlerList handlers = new HandlerList();
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}

BauSystem_Main/src/de/steamwar/bausystem/utils/TickListener.java

@@ -0,0 +1,31 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+import de.steamwar.bausystem.BauSystem;
+import de.steamwar.core.VersionDependent;
+
+public interface TickListener {
+
+    TickListener impl = VersionDependent.getVersionImpl(BauSystem.getInstance());
+
+    default void init() {
+    }
+}

BauSystem_Main/src/de/steamwar/bausystem/utils/TickStartEvent.java

@@ -0,0 +1,36 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.utils;
+
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+public class TickStartEvent extends Event {
+
+    private static final HandlerList handlers = new HandlerList();
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}

build.gradle

@@ -61,6 +61,10 @@ allprojects {
         maven {
             url = uri('https://libraries.minecraft.net')
         }
+
+        maven {
+            url = uri("https://repo.papermc.io/repository/maven-public/")
+        }
     }
 }