(Untested) Explosion, Particle and Sound Hider

Signed-off-by: Lixfel <agga-games@gmx.de>

FightSystem_Core/src/de/steamwar/fightsystem/utils/Hull.java

@@ -90,6 +90,10 @@ public class Hull {
         }
     }
 
+    public boolean isLocationHidden(Player player, Location location) {
+        return players.contains(player) && !visibility.get(new IntVector(location).toId(region));
+    }
+
     @SuppressWarnings("deprecation")
     public void addPlayer(Player player) {
         if(players.add(player)) {

FightSystem_Core/src/de/steamwar/fightsystem/utils/HullHider.java

@@ -19,8 +19,11 @@
 
 package de.steamwar.fightsystem.utils;
 
+import com.comphenix.tinyprotocol.Reflection;
+import com.comphenix.tinyprotocol.TinyProtocol;
 import de.steamwar.core.Core;
 import de.steamwar.entity.REntity;
+import de.steamwar.fightsystem.Config;
 import de.steamwar.fightsystem.fight.Fight;
 import de.steamwar.fightsystem.fight.FightPlayer;
 import de.steamwar.fightsystem.fight.FightTeam;
@@ -29,7 +32,9 @@ import de.steamwar.fightsystem.states.FightState;
 import de.steamwar.fightsystem.states.StateDependent;
 import de.steamwar.fightsystem.states.StateDependentListener;
 import de.steamwar.fightsystem.states.StateDependentTask;
+import de.steamwar.techhider.TechHider;
 import org.bukkit.Bukkit;
+import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
@@ -43,28 +48,41 @@ import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.function.BiFunction;
+import java.util.function.Function;
 
 public class HullHider implements Listener {
 
     private static final boolean ENABLED = TechHiderWrapper.ENABLED && Core.getVersion() >= 18;
     private final Map<FightTeam, Hull> hulls = new HashMap<>();
+    private final Map<Class<?>, BiFunction<Player, Object, Object>> packetHiders = new HashMap<>();
 
     public HullHider() {
         if(ENABLED)
             Fight.teams().forEach(team -> hulls.put(team, new Hull(team)));
 
+        packetHiders.put(packetPlayOutWorldEvent, this::worldEventHider);
+        packetHiders.put(packetPlayOutExplosion, this::explosionHider);
+        posHiderGenerator("{nms.network.protocol.game}.PacketPlayOutWorldParticles", Core.getVersion() >= 18 ? double.class : float.class, 1.0);
+        posHiderGenerator("{nms.network.protocol.game}.PacketPlayOutNamedSoundEffect", int.class, 8.0);
+        if(Core.getVersion() >= 9 && Core.getVersion() < 18)
+            posHiderGenerator("{nms.network.protocol.game}.PacketPlayOutCustomSoundEffect", int.class, 8.0);
+
         new StateDependentListener(ENABLED, FightState.Schem, this);
         new StateDependent(ENABLED, FightState.Schem) {
             @Override
             public void enable() {
+                packetHiders.forEach(TinyProtocol.instance::addFilter);
                 Bukkit.getOnlinePlayers().forEach(HullHider.this::updatePlayer);
             }
 
             @Override
             public void disable() {
                 Bukkit.getOnlinePlayers().forEach(player -> removePlayer(player, true));
+                packetHiders.forEach(TinyProtocol.instance::removeFilter);
             }
         }.register();
         new StateDependentTask(ENABLED, FightState.Schem, this::onTick, 0, 1);
@@ -144,4 +162,46 @@ public class HullHider implements Listener {
     public void despawnREntity(REntity e) {
         hulls.values().forEach(hull -> hull.removeREntity(e));
     }
+
+
+    private static final Class<?> packetPlayOutWorldEvent = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutWorldEvent");
+    private static final Reflection.FieldAccessor<?> worldEventPosition = Reflection.getField(packetPlayOutWorldEvent, TechHider.blockPosition, 0);
+    public static final Reflection.FieldAccessor<Integer> blockPositionY = Reflection.getField("{nms.core}.BaseBlockPosition", int.class, 1);
+    private Object worldEventHider(Player player, Object packet) {
+        Object baseBlock = worldEventPosition.get(packet);
+        return packetHider(player, packet, new Location(Config.world, TechHider.blockPositionX.get(baseBlock), blockPositionY.get(baseBlock), TechHider.blockPositionZ.get(baseBlock)));
+    }
+
+    private static final Class<?> packetPlayOutExplosion = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutExplosion");
+    private static final Reflection.FieldAccessor<List> explosionBlocks = Reflection.getField(packetPlayOutExplosion, List.class, 0);
+    private static final Function<Object, Location> explosionLocation = posPacketToLocation(packetPlayOutExplosion, double.class, 1.0);
+    private Object explosionHider(Player player, Object packet) {
+        if(explosionBlocks.get(packet).isEmpty())
+            return packetHider(player, packet, explosionLocation.apply(packet));
+
+        return packet;
+    }
+
+    private void posHiderGenerator(String typeName, Class<?> posType, double factor) {
+        Class<?> type = Reflection.getClass(typeName);
+        Function<Object, Location> location = posPacketToLocation(type, posType, factor);
+        packetHiders.put(type, (player, packet) -> packetHider(player, packet, location.apply(packet)));
+    }
+
+    private static Function<Object, Location> posPacketToLocation(Class<?> type, Class<?> posType, double factor) {
+        Reflection.FieldAccessor<?> x = Reflection.getField(type, posType, 0);
+        Reflection.FieldAccessor<?> y = Reflection.getField(type, posType, 1);
+        Reflection.FieldAccessor<?> z = Reflection.getField(type, posType, 2);
+
+        return packet -> new Location(Config.world, (double)x.get(packet)/factor, (double)y.get(packet)/factor, (double)z.get(packet)/factor);
+    }
+
+    private Object packetHider(Player player, Object packet, Location location) {
+        for(Hull hull : hulls.values()) {
+            if(hull.isLocationHidden(player, location))
+                return null;
+        }
+
+        return packet;
+    }
 }