Add initial Multi Tick calculation

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_15/src/de/steamwar/bausystem/features/simulator/preview/Simulator15.java

@@ -19,17 +19,5 @@
 
 package de.steamwar.bausystem.features.simulator.preview;
 
-import de.steamwar.bausystem.features.simulator.TNTData;
-import de.steamwar.bausystem.shared.Pair;
-
-import java.util.List;
-import java.util.Map;
-import java.util.function.Consumer;
-
 public class Simulator15 implements Simulator {
-
-    @Override
-    public void run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> consumer) {
-        consumer.accept(null);
-    }
 }

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/AxisMovementLimiter.java

@@ -104,7 +104,7 @@ public class AxisMovementLimiter {
     }
 
     // TODO: This can be optimized by optimizing the x,y,z loop layout
-    public double run() {
+    public double run(SimulatorData simulatorData) {
         if (movement == 0.0) return 0.0;
 
         BoundingBox movementBoundingBox = new BoundingBox(minX, minY, minZ, maxX, maxY, maxZ);
@@ -112,7 +112,7 @@ public class AxisMovementLimiter {
 
         Double collision = null;
         for (Pos pos : poss) {
-            VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+            VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
             for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                 boundingBox = boundingBox.clone().shift(pos.x, pos.y, pos.z);
                 boolean collides = boundingBox.overlaps(movementBoundingBox);

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/Explosion.java

@@ -73,7 +73,7 @@ public class Explosion {
         this.z = z;
     }
 
-    public void calculate() {
+    public void calculate(SimulatorData simulatorData) {
         Set<Pos> affectedBlocks = new HashSet<>();
         for (int i = 0; i < FACE_BLOCKS.length; i += 3) {
             double d = FACE_BLOCKS[i + 0];
@@ -90,12 +90,12 @@ public class Explosion {
                 int y = TNT.floor(n);
                 int z = TNT.floor(o);
 
-                Material material = Simulator19.getBlockType(x, y, z);
+                Material material = simulatorData.getBlockType(x, y, z);
                 if (!material.isAir()) {
                     h -= (material.getBlastResistance() + 0.3F) * 0.3F;
                 }
                 if (WATER_LOGABLE.contains(material)) {
-                    Waterlogged waterlogged = (Waterlogged) Simulator19.getBlockData(x, y, z);
+                    Waterlogged waterlogged = (Waterlogged) simulatorData.getBlockData(x, y, z);
                     if (waterlogged.isWaterlogged()) {
                         h = 0.0F;
                     }
@@ -110,7 +110,7 @@ public class Explosion {
                 o += f * 0.30000001192092896;
             }
         }
-        Simulator19.clearBlocks(affectedBlocks);
+        simulatorData.clearBlocks(affectedBlocks);
 
         float q = POWER * 2.0F;
         int k = floor(x - q - 1.0D);
@@ -120,7 +120,7 @@ public class Explosion {
         int t = floor(z - q - 1.0D);
         int u = floor(z + q + 1.0D);
 
-        for (TNT currentTNT : Simulator19.tntList) {
+        for (TNT currentTNT : simulatorData.tntList) {
             if (currentTNT == tnt) continue;
             if (!(currentTNT.getX() >= k && currentTNT.getY() >= r && currentTNT.getZ() >= t && currentTNT.getX() <= l && currentTNT.getY() <= s && currentTNT.getZ() <= u)) {
                 continue;
@@ -141,7 +141,7 @@ public class Explosion {
             y /= aa;
             z /= aa;
 
-            double ab = getExposure(this.x, this.y, this.z);
+            double ab = getExposure(simulatorData, this.x, this.y, this.z);
             double ac = (1.0 - w) * ab;
             currentTNT.setVx(currentTNT.getVx() + x * ac);
             currentTNT.setVy(currentTNT.getVy() + y * ac);
@@ -160,7 +160,7 @@ public class Explosion {
     private static final double EXPOSURE_CONSTANT_1 = 1.0 / (SIZE * 2 + 1.0);
     private static final double EXPOSURE_CONSTANT_2 = (1.0 - Math.floor(1.0 / EXPOSURE_CONSTANT_1) * EXPOSURE_CONSTANT_1) / 2.0;
 
-    private static float getExposure(double x, double y, double z) {
+    private static float getExposure(SimulatorData simulatorData, double x, double y, double z) {
         float blockMisses = 0;
         float blockTotal = 0;
 
@@ -171,7 +171,7 @@ public class Explosion {
                     double dy = lerp(l, 0.0, SIZE);
                     double dz = lerp(m, MIN_POINT, MAX_POINT) + EXPOSURE_CONSTANT_2;
 
-                    if (rayTrace(x, y, z, dx, dy, dz)) {
+                    if (rayTrace(simulatorData, x, y, z, dx, dy, dz)) {
                         blockMisses++;
                     }
                     blockTotal++;
@@ -186,7 +186,7 @@ public class Explosion {
         return start + delta * (end - start);
     }
 
-    public static boolean rayTrace(double sX, double sY, double sZ, double dX, double dY, double dZ) {
+    public static boolean rayTrace(SimulatorData simulatorData, double sX, double sY, double sZ, double dX, double dY, double dZ) {
         double x = sX;
         double y = sY;
         double z = sZ;
@@ -194,7 +194,7 @@ public class Explosion {
         int oY = sY > dY ? -1 : 1;
         int oZ = sZ > dZ ? -1 : 1;
         while (true) {
-            if (Simulator19.getBlockType(floor(x), floor(y), floor(z)) != Material.AIR) {
+            if (simulatorData.getBlockType(floor(x), floor(y), floor(z)) != Material.AIR) {
                 return true;
             }
 

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/OptimizedAxisMovementLimiter.java

@@ -92,38 +92,38 @@ public class OptimizedAxisMovementLimiter {
         movementBoundingBox = new BoundingBox(minX, minY, minZ, maxX, maxY, maxZ);
     }
 
-    public double run() {
+    public double run(SimulatorData simulatorData) {
         if (movement == 0.0) return 0.0;
         switch (axis) {
             case X:
                 if (movement < 0.0) {
-                    return runNX();
+                    return runNX(simulatorData);
                 } else {
-                    return runPX();
+                    return runPX(simulatorData);
                 }
             case Y:
                 if (movement < 0.0) {
-                    return runNY();
+                    return runNY(simulatorData);
                 } else {
-                    return runPY();
+                    return runPY(simulatorData);
                 }
             case Z:
             default:
                 if (movement < 0.0) {
-                    return runNZ();
+                    return runNZ(simulatorData);
                 } else {
-                    return runPZ();
+                    return runPZ(simulatorData);
                 }
         }
     }
 
-    private double runNX() {
+    private double runNX(SimulatorData simulatorData) {
         Double collision = null;
         for (int x = maxIX - 1; x >= minIX; x--) {
             for (int y = minIY; y < maxIY; y++) {
                 for (int z = minIZ; z < maxIZ; z++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;
@@ -147,13 +147,13 @@ public class OptimizedAxisMovementLimiter {
         return movement + (collision - minX);
     }
 
-    private double runPX() {
+    private double runPX(SimulatorData simulatorData) {
         Double collision = null;
         for (int x = minIX; x < maxIX; x++) {
             for (int y = minIY; y < maxIY; y++) {
                 for (int z = minIZ; z < maxIZ; z++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;
@@ -177,13 +177,13 @@ public class OptimizedAxisMovementLimiter {
         return movement + (collision - minX);
     }
 
-    private double runNY() {
+    private double runNY(SimulatorData simulatorData) {
         Double collision = null;
         for (int y = maxIY - 1; y >= minIY; y--) {
             for (int x = minIX; x < maxIX; x++) {
                 for (int z = minIZ; z < maxIZ; z++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;
@@ -207,13 +207,13 @@ public class OptimizedAxisMovementLimiter {
         return movement + (collision - minY);
     }
 
-    private double runPY() {
+    private double runPY(SimulatorData simulatorData) {
         Double collision = null;
         for (int y = minIY; y < maxIY; y++) {
             for (int x = minIX; x < maxIX; x++) {
                 for (int z = minIZ; z < maxIZ; z++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;
@@ -237,13 +237,13 @@ public class OptimizedAxisMovementLimiter {
         return movement + (collision - minY);
     }
 
-    private double runNZ() {
+    private double runNZ(SimulatorData simulatorData) {
         Double collision = null;
         for (int z = maxIZ - 1; z >= minIZ; z--) {
             for (int x = minIX; x < maxIX; x++) {
                 for (int y = minIY; y < maxIY; y++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;
@@ -267,13 +267,13 @@ public class OptimizedAxisMovementLimiter {
         return movement + (collision - minZ);
     }
 
-    private double runPZ() {
+    private double runPZ(SimulatorData simulatorData) {
         Double collision = null;
         for (int z = minIZ; z < maxIZ; z++) {
             for (int x = minIX; x < maxIX; x++) {
                 for (int y = minIY; y < maxIY; y++) {
                     Pos pos = new Pos(x, y, z);
-                    VoxelShape voxelShape = Simulator19.getVoxelShape(pos);
+                    VoxelShape voxelShape = simulatorData.getVoxelShape(pos);
                     for (BoundingBox boundingBox : voxelShape.getBoundingBoxes()) {
                         boundingBox = boundingBox.clone().shift(x, y, z);
                         if (!boundingBox.overlaps(movementBoundingBox)) continue;

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/Simulator19.java

@@ -19,18 +19,20 @@
 
 package de.steamwar.bausystem.features.simulator.preview;
 
+import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.features.simulator.TNTData;
 import de.steamwar.bausystem.features.tracer.show.Record;
 import de.steamwar.bausystem.shared.Pair;
 import org.bukkit.Bukkit;
-import org.bukkit.Material;
 import org.bukkit.World;
-import org.bukkit.block.data.BlockData;
+import org.bukkit.scheduler.BukkitRunnable;
-import org.bukkit.util.BoundingBox;
+import org.bukkit.scheduler.BukkitTask;
 import org.bukkit.util.Vector;
-import org.bukkit.util.VoxelShape;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Consumer;
 
@@ -38,37 +40,20 @@ public class Simulator19 implements Simulator {
 
     protected static final World WORLD = Bukkit.getWorlds().get(0);
 
-    private static final BlockData AIR_BLOCK_DATA = Material.AIR.createBlockData();
-    private static final VoxelShape AIR_VOXEL_SHAPE = new VoxelShape() {
     @Override
-        public Collection<BoundingBox> getBoundingBoxes() {
+    public BukkitTask run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> consumer) { // TODO: Implement multi tick calculation max 40 ms per tick
-            return Collections.emptyList();
+        if (toCalculate == null) return null;
-        }
+
+        BukkitRunnable bukkitRunnable = new BukkitRunnable() {
+            private SimulatorData simulatorData = new SimulatorData();
+            private PreviewRecord previewRecord = new PreviewRecord();
+            private int currentTick = 0;
+            private Map<TNT, Record.TNTRecord> recordMap = new HashMap<>();
 
             @Override
-        public boolean overlaps(BoundingBox boundingBox) {
+            public void run() {
-            return false;
-        }
-    };
-
-    private static long accessed = 0;
-    private static long cacheMisses = 0;
-    private static long aired = 0;
-    static final List<TNT> tntList = new ArrayList<>();
-    private static final Set<Pos> AIR_BLOCKS = new HashSet<>();
-    private static final Map<Pos, Material> BLOCK_TYPES_MAP = new HashMap<>();
-    private static final Map<Pos, BlockData> BLOCK_DATA_MAP = new HashMap<>();
-    private static final Map<Pos, VoxelShape> COLLISION_DATA_MAP = new HashMap<>();
-
-    @Override
-    public void run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> consumer) { // TODO: Implement multi tick calculation max 40 ms per tick
-        if (toCalculate == null) return;
-        PreviewRecord previewRecord = new PreviewRecord();
-        int currentTick = 0;
-
-        Map<TNT, Record.TNTRecord> recordMap = new HashMap<>();
                 long time = System.currentTimeMillis();
-        while (!tntList.isEmpty() || currentTick <= toCalculate.getKey()) {
+                while (!simulatorData.tntList.isEmpty() || currentTick <= toCalculate.getKey() && System.currentTimeMillis() - time < 40) {
                     List<List<Pair<TNTData, Integer>>> toSpawnInTick = toCalculate.getValue().get(currentTick);
                     if (toSpawnInTick != null) {
                         int finalCurrentTick = currentTick;
@@ -84,7 +69,7 @@ public class Simulator19 implements Simulator {
                                         if (!pair.getKey().yVelocity) tnt.setVy(0.0);
                                         if (!pair.getKey().zVelocity) tnt.setVz(0.0);
                                         tnt.setFuse(tnt.getFuse());
-                                tntList.add(tnt);
+                                        simulatorData.tntList.add(tnt);
                                         pair.setValue(pair.getValue() - 1);
                                         Record.TNTRecord record = previewRecord.getRecord().spawn(finalCurrentTick);
                                         record.source(pair.getKey().location.toVector(), new Vector(tnt.getVx(), tnt.getVy(), tnt.getVz()), tnt.getFuse());
@@ -97,67 +82,25 @@ public class Simulator19 implements Simulator {
                     currentTick++;
 
                     List<TNT> remove = new ArrayList<>();
-            for (TNT tnt : tntList) {
+                    for (TNT tnt : simulatorData.tntList) {
-                if (tnt.tick()) {
+                        if (tnt.tick(simulatorData)) {
                             remove.add(tnt);
                             recordMap.remove(tnt).explode(new Vector(tnt.getX(), tnt.getY(), tnt.getZ()), new Vector(tnt.getVx(), tnt.getVy(), tnt.getVz()), tnt.getFuse());
                         } else {
                             recordMap.get(tnt).location(new Vector(tnt.getX(), tnt.getY(), tnt.getZ()), new Vector(tnt.getVx(), tnt.getVy(), tnt.getVz()), tnt.getFuse());
                         }
                     }
-            tntList.removeAll(remove);
+                    simulatorData.tntList.removeAll(remove);
                 }
-        AIR_BLOCKS.forEach(pos -> previewRecord.addAir(new Vector(pos.x, pos.y, pos.z)));
-        System.out.println("Time: " + (System.currentTimeMillis() - time) + "ms   " + cacheMisses + "/" + accessed + "/" + aired);
 
-        AIR_BLOCKS.clear();
+                System.out.println("Time: " + (System.currentTimeMillis() - time) + "ms   " + simulatorData.cacheMisses + "/" + simulatorData.accessed + "/" + simulatorData.aired);
-        BLOCK_TYPES_MAP.clear();
+                if (simulatorData.tntList.isEmpty() && currentTick <= toCalculate.getKey()) {
-        BLOCK_DATA_MAP.clear();
+                    simulatorData.airBlocks.forEach(pos -> previewRecord.addAir(new Vector(pos.x, pos.y, pos.z)));
-        COLLISION_DATA_MAP.clear();
-        accessed = 0;
-        cacheMisses = 0;
-        aired = 0;
                     consumer.accept(previewRecord);
-    }
+                    cancel();
-
+                }
-    public static Material getBlockType(int x, int y, int z) { // Get BlockType of Chunk Data array?
+            }
-        accessed++;
+        };
-        Pos pos = new Pos(x, y, z);
+        return bukkitRunnable.runTaskTimer(BauSystem.getInstance(), 0, 1);
-        if (AIR_BLOCKS.contains(pos)) {
-            return Material.AIR;
-        }
-        return BLOCK_TYPES_MAP.computeIfAbsent(pos, v -> {
-            cacheMisses++;
-            return WORLD.getBlockAt(x, y, z).getType();
-        });
-    }
-
-    public static BlockData getBlockData(int x, int y, int z) {
-        accessed++;
-        return BLOCK_DATA_MAP.computeIfAbsent(new Pos(x, y, z), v -> {
-            cacheMisses++;
-            return WORLD.getBlockAt(x, y, z).getBlockData();
-        });
-    }
-
-    public static VoxelShape getVoxelShape(Pos pos) {
-        accessed++;
-        if (AIR_BLOCKS.contains(pos)) {
-            return AIR_VOXEL_SHAPE;
-        }
-        return COLLISION_DATA_MAP.computeIfAbsent(pos, v -> {
-            cacheMisses++;
-            return WORLD.getBlockAt(pos.x, pos.y, pos.z).getCollisionShape();
-        });
-    }
-
-    public static void clearBlock(Pos pos) {
-        aired++;
-        AIR_BLOCKS.add(pos);
-        BlockData blockData = BLOCK_DATA_MAP.put(pos, AIR_BLOCK_DATA);
-    }
-
-    public static void clearBlocks(Set<Pos> poss) { // TODO: Optimize
-        poss.forEach(Simulator19::clearBlock);
     }
 }

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/SimulatorData.java

@@ -0,0 +1,93 @@
+/*
+ *   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.features.simulator.preview;
+
+import org.bukkit.Material;
+import org.bukkit.block.data.BlockData;
+import org.bukkit.util.BoundingBox;
+import org.bukkit.util.VoxelShape;
+
+import java.util.*;
+
+public class SimulatorData {
+
+    private static final BlockData AIR_BLOCK_DATA = Material.AIR.createBlockData();
+    private static final VoxelShape AIR_VOXEL_SHAPE = new VoxelShape() {
+        @Override
+        public Collection<BoundingBox> getBoundingBoxes() {
+            return Collections.emptyList();
+        }
+
+        @Override
+        public boolean overlaps(BoundingBox boundingBox) {
+            return false;
+        }
+    };
+
+    long accessed = 0;
+    long cacheMisses = 0;
+    long aired = 0;
+    final List<TNT> tntList = new ArrayList<>();
+    final Set<Pos> airBlocks = new HashSet<>();
+    final Map<Pos, Material> blockTypesMap = new HashMap<>();
+    final Map<Pos, BlockData> blockDataMap = new HashMap<>();
+    final Map<Pos, VoxelShape> collisionDataMap = new HashMap<>();
+
+    public Material getBlockType(int x, int y, int z) { // Get BlockType of Chunk Data array?
+        accessed++;
+        Pos pos = new Pos(x, y, z);
+        if (airBlocks.contains(pos)) {
+            return Material.AIR;
+        }
+        return blockTypesMap.computeIfAbsent(pos, v -> {
+            cacheMisses++;
+            return Simulator19.WORLD.getBlockAt(x, y, z).getType();
+        });
+    }
+
+    public BlockData getBlockData(int x, int y, int z) {
+        accessed++;
+        return blockDataMap.computeIfAbsent(new Pos(x, y, z), v -> {
+            cacheMisses++;
+            return Simulator19.WORLD.getBlockAt(x, y, z).getBlockData();
+        });
+    }
+
+    public VoxelShape getVoxelShape(Pos pos) {
+        accessed++;
+        if (airBlocks.contains(pos)) {
+            return AIR_VOXEL_SHAPE;
+        }
+        return collisionDataMap.computeIfAbsent(pos, v -> {
+            cacheMisses++;
+            return Simulator19.WORLD.getBlockAt(pos.x, pos.y, pos.z).getCollisionShape();
+        });
+    }
+
+    public void clearBlock(Pos pos) {
+        aired++;
+        airBlocks.add(pos);
+        blockDataMap.put(pos, AIR_BLOCK_DATA);
+    }
+
+    public void clearBlocks(Set<Pos> poss) { // TODO: Optimize
+        poss.forEach(this::clearBlock);
+    }
+}

BauSystem_19/src/de/steamwar/bausystem/features/simulator/preview/TNT.java

@@ -71,10 +71,10 @@ public class TNT {
         this.fuse = 80;
     }
 
-    public boolean tick() {
+    public boolean tick(SimulatorData simulatorData) {
         this.vy -= 0.04;
 
-        move(new Vector(this.vx, this.vy, this.vz));
+        move(simulatorData, new Vector(this.vx, this.vy, this.vz));
 
         this.vx *= 0.98;
         this.vy *= 0.98;
@@ -83,13 +83,13 @@ public class TNT {
         this.fuse--;
         if (this.fuse <= 0) {
             Explosion explosion = new Explosion(this, x, y + 0.98 * 0.0625, z);
-            explosion.calculate();
+            explosion.calculate(simulatorData);
             return true;
         }
         return false;
     }
 
-    private void move(Vector movement) {
+    private void move(SimulatorData simulatorData, Vector movement) {
         if (movementMultiplier.lengthSquared() > 1.0E-7) {
             movement.multiply(movementMultiplier);
             movementMultiplier = new Vector(0, 0, 0);
@@ -98,7 +98,7 @@ public class TNT {
             vz = 0;
         }
 
-        Vector vec3d = adjustMovementForCollisions(movement);
+        Vector vec3d = adjustMovementForCollisions(simulatorData, movement);
         // System.out.println(movement + " " + vec3d);
         double lengthSquared = vec3d.lengthSquared();
         if (lengthSquared > 1.0E-7) {
@@ -121,9 +121,9 @@ public class TNT {
         this.verticalCollision = movement.getY() != vec3d.getY();
 
         this.onGround = this.verticalCollision && movement.getY() < 0.0D;
-        Vector blockPos = getLandingPos();
+        Vector blockPos = getLandingPos(simulatorData);
-        Material material = Simulator19.getBlockType(blockPos.getBlockX(), blockPos.getBlockY(), blockPos.getBlockZ());
+        Material material = simulatorData.getBlockType(blockPos.getBlockX(), blockPos.getBlockY(), blockPos.getBlockZ());
-        BlockData blockData = Simulator19.getBlockData(blockPos.getBlockX(), blockPos.getBlockY(), blockPos.getBlockZ());
+        BlockData blockData = simulatorData.getBlockData(blockPos.getBlockX(), blockPos.getBlockY(), blockPos.getBlockZ());
         fall(vec3d.getY(), onGround);
 
         if (horizontalCollision) {
@@ -154,27 +154,27 @@ public class TNT {
             }
         }
 
-        checkBlockCollision();
+        checkBlockCollision(simulatorData);
-        float j = this.getVelocityMultiplier();
+        float j = this.getVelocityMultiplier(simulatorData);
         this.vx *= j;
         this.vz *= j;
     }
 
-    private Vector adjustMovementForCollisions(Vector movement) {
+    private Vector adjustMovementForCollisions(SimulatorData simulatorData, Vector movement) {
         if (movement.lengthSquared() == 0.0) {
             return movement;
         }
 
-        double mY = new AxisMovementLimiter(x, y, z, Axis.Y, movement.getY()).run();
+        double mY = new AxisMovementLimiter(x, y, z, Axis.Y, movement.getY()).run(simulatorData);
 
         boolean bl = Math.abs(movement.getX()) < Math.abs(movement.getZ());
         if (bl) {
-            double mZ = new AxisMovementLimiter(x, y + mY, z, Axis.Z, movement.getZ()).run();
+            double mZ = new AxisMovementLimiter(x, y + mY, z, Axis.Z, movement.getZ()).run(simulatorData);
-            double mX = new AxisMovementLimiter(x, y + mY, z + mZ, Axis.X, movement.getX()).run();
+            double mX = new AxisMovementLimiter(x, y + mY, z + mZ, Axis.X, movement.getX()).run(simulatorData);
             return new Vector(mX, mY, mZ);
         } else {
-            double mX = new AxisMovementLimiter(x, y + mY, z, Axis.X, movement.getX()).run();
+            double mX = new AxisMovementLimiter(x, y + mY, z, Axis.X, movement.getX()).run(simulatorData);
-            double mZ = new AxisMovementLimiter(x + mX, y + mY, z, Axis.Z, movement.getZ()).run();
+            double mZ = new AxisMovementLimiter(x + mX, y + mY, z, Axis.Z, movement.getZ()).run(simulatorData);
             return new Vector(mX, mY, mZ);
         }
     }
@@ -188,13 +188,13 @@ public class TNT {
         return value < (double)i ? i - 1 : i;
     }
 
-    private Vector getLandingPos() {
+    private Vector getLandingPos(SimulatorData simulatorData) {
         int x = floor(this.x);
         int y = floor(this.y - 0.2F);
         int z = floor(this.z);
 
-        if (Simulator19.getBlockType(x, y, z).isAir()) {
+        if (simulatorData.getBlockType(x, y, z).isAir()) {
-            BlockData blockData = Simulator19.getBlockData(x, y - 1, z);
+            BlockData blockData = simulatorData.getBlockData(x, y - 1, z);
             if (blockData instanceof Fence || blockData instanceof Wall || blockData instanceof Gate) {
                 return new Vector(x, y - 1, z);
             }
@@ -210,7 +210,7 @@ public class TNT {
         }
     }
 
-    private void checkBlockCollision() {
+    private void checkBlockCollision(SimulatorData simulatorData) {
         int x1 = floor(x + 1.0E-7);
         int y1 = floor(y + 1.0E-7);
         int z1 = floor(z + 1.0E-7);
@@ -221,7 +221,7 @@ public class TNT {
         for (int x = x1; x <= x2; x++) {
             for (int y = y1; y <= y2; y++) {
                 for (int z = z1; z <= z2; z++) {
-                    Material material = Simulator19.getBlockType(x, y, z);
+                    Material material = simulatorData.getBlockType(x, y, z);
 
                     if (material == Material.POWDER_SNOW) {
                         slowMovement(new Vector(0.8999999761581421, 1.5, 0.8999999761581421));
@@ -232,8 +232,8 @@ public class TNT {
                     } else if (material == Material.COBWEB) {
                         slowMovement(new Vector(0.25, 0.05000000074505806, 0.25));
                     } else if (material == Material.BUBBLE_COLUMN) {
-                        boolean drag = ((BubbleColumn) Simulator19.getBlockData(x, y, z)).isDrag();
+                        boolean drag = ((BubbleColumn) simulatorData.getBlockData(x, y, z)).isDrag();
-                        if (Simulator19.getBlockType(x, y + 1, z).isAir()) {
+                        if (simulatorData.getBlockType(x, y + 1, z).isAir()) {
                             if (drag) {
                                 this.vy = Math.max(-0.9, vy - 0.03);
                             } else {
@@ -278,8 +278,8 @@ public class TNT {
         return d + 1.0E-7 > f || e + 1.0E-7 > f;
     }
 
-    private float getVelocityMultiplier() {
+    private float getVelocityMultiplier(SimulatorData simulatorData) {
-        Material material = Simulator19.getBlockType(floor(x), floor(y), floor(z));
+        Material material = simulatorData.getBlockType(floor(x), floor(y), floor(z));
         float f = 1F;
         if (material == Material.SOUL_SAND) {
             f = 0.5F;
@@ -288,7 +288,7 @@ public class TNT {
         }
         if (material != Material.WATER && material != Material.BUBBLE_COLUMN) {
             if (f != 1) return f;
-            material = Simulator19.getBlockType(floor(x), floor(y - 0.5000001), floor(z));
+            material = simulatorData.getBlockType(floor(x), floor(y - 0.5000001), floor(z));
             if (material == Material.SOUL_SAND) {
                 f = 0.5F;
             } else if (material == Material.HONEY_BLOCK) {

BauSystem_20/src/de/steamwar/bausystem/features/simulator/preview/Simulator20.java

@@ -19,17 +19,5 @@
 
 package de.steamwar.bausystem.features.simulator.preview;
 
-import de.steamwar.bausystem.features.simulator.TNTData;
-import de.steamwar.bausystem.shared.Pair;
-
-import java.util.List;
-import java.util.Map;
-import java.util.function.Consumer;
-
 public class Simulator20 implements Simulator {
-
-    @Override
-    public void run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> consumer) {
-        consumer.accept(null);
-    }
 }

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

@@ -40,6 +40,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.entity.TNTPrimed;
+import org.bukkit.scheduler.BukkitTask;
 import yapion.hierarchy.types.YAPIONArray;
 import yapion.hierarchy.types.YAPIONObject;
 import yapion.hierarchy.types.YAPIONType;
@@ -49,17 +50,22 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
-@Getter
 public class TNTSimulator {
 
+    @Getter
     private Set<Player> players = new HashSet<>();
+
+    @Getter
     private REntityServer entityServer = new REntityServer();
 
+    @Getter
     private Material material = Material.TNT;
 
+    @Getter
     private List<SimulatorElement> tntElementList = new ArrayList<>();
 
-    private boolean currentlyCalculating = false;
+    private List<Player> toShow = new ArrayList<>();
+    private BukkitTask currentlyCalculating = null;
     private PreviewRecord previewRecord = null;
 
     public TNTSimulator() {
@@ -108,17 +114,21 @@ public class TNTSimulator {
     }
 
     public void showPreview(Player player) {
-        if (previewRecord == null) {
-            calcPreview(true);
-        }
         if (previewRecord != null) {
             previewRecord.show(player);
+            return;
         }
+        toShow.add(player);
+        calcPreview(true);
     }
 
     public void hidePreview(Player player) {
         if (previewRecord != null && previewRecord.hide(player)) {
             previewRecord = null;
+            if (currentlyCalculating != null) {
+                currentlyCalculating.cancel();
+                currentlyCalculating = null;
+            }
         }
     }
 
@@ -130,27 +140,24 @@ public class TNTSimulator {
         if (!force && previewRecord == null) {
             return;
         }
-        if (currentlyCalculating) return;
+        if (currentlyCalculating != null) currentlyCalculating.cancel();
-        currentlyCalculating = true;
+        currentlyCalculating = Simulator.impl.run(locations(true), newRecord -> {
-
+            currentlyCalculating = null;
-        Simulator.impl.run(locations(true), newRecord -> {
-            boolean recalculate = currentlyCalculating;
-            currentlyCalculating = false;
 
             PreviewRecord oldRecord = previewRecord;
             previewRecord = newRecord;
-            if (newRecord == null) return;
+            if (newRecord == null) {
+                toShow.clear();
+                return;
+            }
             if (oldRecord != null) {
                 oldRecord.getPlayers().forEach(player -> {
                     oldRecord.hide(player);
                     newRecord.show(player);
                 });
             }
-            if (recalculate) {
+            toShow.forEach(newRecord::show);
-                Bukkit.getScheduler().runTaskLater(BauSystem.getInstance(), () -> {
+            toShow.clear();
-                    calcPreview(force);
-                }, 1);
-            }
         });
     }
 

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

@@ -23,6 +23,7 @@ import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.features.simulator.TNTData;
 import de.steamwar.bausystem.shared.Pair;
 import de.steamwar.core.VersionDependent;
+import org.bukkit.scheduler.BukkitTask;
 
 import java.util.List;
 import java.util.Map;
@@ -31,5 +32,7 @@ import java.util.function.Consumer;
 public interface Simulator {
     Simulator impl = VersionDependent.getVersionImpl(BauSystem.getInstance());
 
-    void run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> finished);
+    default BukkitTask run(Pair<Integer, Map<Integer, List<List<Pair<TNTData, Integer>>>>> toCalculate, Consumer<PreviewRecord> finished) {
+        return null;
+    }
 }