Update and integrate legacy system

BauSystem/BauSystem_21/src/de/steamwar/bausystem/utils/TickManager21.java

@@ -20,18 +20,23 @@
 package de.steamwar.bausystem.utils;
 
 import com.comphenix.tinyprotocol.TinyProtocol;
+import de.steamwar.Reflection;
 import net.minecraft.network.protocol.game.ClientboundTickingStatePacket;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.ServerTickRateManager;
+import net.minecraft.world.TickRateManager;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
-public class NativeTickManager21 implements NativeTickManager {
+public class TickManager21 implements TickManager {
     private static final ServerTickRateManager manager = MinecraftServer.getServer().tickRateManager();
+    private static final Reflection.Field<Integer> frozenTicksToRun = Reflection.getField(TickRateManager.class, int.class, 0);
+    private static final Reflection.Field<Long> remainingSprintTicks = Reflection.getField(ServerTickRateManager.class, long.class, 0);
 
     private boolean blockTpsPacket = true;
+    private int totalSteps;
 
-    public NativeTickManager21() {
+    public TickManager21() {
         TinyProtocol.instance.addFilter(ClientboundTickingStatePacket.class, this::blockPacket);
     }
 
@@ -43,6 +48,11 @@ public class NativeTickManager21 implements NativeTickManager {
         }
     }
 
+    @Override
+    public boolean canFreeze() {
+        return true;
+    }
+
     @Override
     public void blockTpsPacket(boolean block) {
         blockTpsPacket = block;
@@ -57,14 +67,14 @@ public class NativeTickManager21 implements NativeTickManager {
 
     @Override
     public void setTickRate(float tickRate) {
-        if (getFreezeState()) {
+        if (isFrozen()) {
             setFreeze(false);
         }
         manager.setTickRate(tickRate);
     }
 
     @Override
-    public boolean getFreezeState() {
+    public boolean isFrozen() {
         return manager.isFrozen();
     }
 
@@ -74,12 +84,20 @@ public class NativeTickManager21 implements NativeTickManager {
     }
 
     @Override
-    public void stepTick(int ticks) {
+    public void stepTicks(int ticks) {
+        if (manager.isSprinting()) {
+            manager.stopSprinting();
+        }
+        this.totalSteps = ticks;
         manager.stepGameIfPaused(ticks);
     }
 
     @Override
     public void sprintTicks(int ticks) {
+        if (manager.isSteppingForward()) {
+            manager.stopStepping();
+        }
+        this.totalSteps = ticks;
         manager.requestGameToSprint(ticks, true);
     }
 
@@ -89,7 +107,31 @@ public class NativeTickManager21 implements NativeTickManager {
     }
 
     @Override
-    public float tickrate() {
+    public boolean isStepping() {
+        return manager.isSteppingForward();
+    }
+
+    @Override
+    public float getTickRate() {
         return manager.tickrate();
     }
+
+    @Override
+    public long getRemainingTicks() {
+        if (isSprinting()) {
+            return remainingSprintTicks.get(manager);
+        } else {
+            return frozenTicksToRun.get(manager);
+        }
+    }
+
+    @Override
+    public long getDoneTicks() {
+        return totalSteps - getRemainingTicks();
+    }
+
+    @Override
+    public long getTotalTicks() {
+        return totalSteps;
+    }
 }