From 04f4edbf30292895e09b8486a3b85f9efb361a3b Mon Sep 17 00:00:00 2001
From: Lixfel <agga-games@gmx.de>
Date: Tue, 10 Mar 2020 17:50:09 +0100
Subject: [PATCH] First tests (bugged for 1.15)

Signed-off-by: Lixfel <agga-games@gmx.de>
---
 .../fightsystem/utils/TechHider_12.java       | 59 +++++++++----------
 1 file changed, 28 insertions(+), 31 deletions(-)

diff --git a/FightSystem_12/src/de/steamwar/fightsystem/utils/TechHider_12.java b/FightSystem_12/src/de/steamwar/fightsystem/utils/TechHider_12.java
index 99f1c2a..0a5e8c7 100644
--- a/FightSystem_12/src/de/steamwar/fightsystem/utils/TechHider_12.java
+++ b/FightSystem_12/src/de/steamwar/fightsystem/utils/TechHider_12.java
@@ -17,6 +17,7 @@ import org.bukkit.craftbukkit.v1_12_R1.CraftChunk;
 import org.bukkit.craftbukkit.v1_12_R1.entity.CraftPlayer;
 import org.bukkit.entity.Player;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import static de.steamwar.fightsystem.utils.ITechHider.bypass;
@@ -47,31 +48,24 @@ class TechHider_12 {
                 if(bypass(p, chunkX, chunkZ))
                     return;
 
-                PacketContainer cached = ITechHider.packetCache.get(packet);
-                if(cached != null){
-                    e.setPacket(cached);
-                    return;
-                }
-
-                cached = packet.deepClone();
-                ITechHider.packetCache.put(packet, cached);
-                e.setPacket(cached);
-                StructureModifier<List> list = cached.getSpecificModifier(List.class);
+                packet = packet.shallowClone();
+                e.setPacket(packet);
+                StructureModifier<List> list = packet.getSpecificModifier(List.class);
                 List nmsTags = list.read(0);
                 boolean changed = false;
-                for(int i = nmsTags.size() - 1; i >= 0; i--){
-                    NbtCompound nbt = NbtFactory.fromNMSCompound(nmsTags.get(i));
-                    if(Config.HiddenBlockEntities.contains(nbt.getString("id"))){
-                        nmsTags.remove(i);
+                List newNmsTags = new ArrayList(nmsTags.size());
+                for(Object nmsTag : nmsTags){
+                    NbtCompound nbt = NbtFactory.fromNMSCompound(nmsTag);
+                    if(Config.HiddenBlockEntities.contains(nbt.getString("id")))
                         changed = true;
-                    }
-                }
-                if(changed){
-                    list.write(0, nmsTags);
+                    else
+                        newNmsTags.add(nmsTag);
                 }
+                if(changed)
+                    list.write(0, newNmsTags);
 
                 changed = false;
-                StructureModifier<byte[]> byteArray = cached.getByteArrays();
+                StructureModifier<byte[]> byteArray = packet.getByteArrays();
                 byte [] data = byteArray.read(0);
                 ByteBuf buffer = UnpooledByteBufAllocator.DEFAULT.directBuffer(data.length + 100);
                 int i = 0;
@@ -91,20 +85,23 @@ class TechHider_12 {
                         int paletteLengthLength = ITechHider.readVarIntLength(data, i);
                         buffer.writeBytes(data, i, paletteLengthLength);
                         i += paletteLengthLength;
+                        List<Integer> palette = new ArrayList<>(paletteLength);
                         for(int actPaletteId = 0; actPaletteId < paletteLength; actPaletteId++){
-                            int actPalette = ITechHider.readVarInt(data, i);
-                            int actPaletteLength = ITechHider.readVarIntLength(data, i);
-
-                            int blockId = actPalette >> 4;
-                            if(Config.HiddenBlocks.contains(blockId)){
-                                byte[] a = ITechHider.writeVarInt(obfuscateShift4);
-                                buffer.writeBytes(a);
-                                changed = true;
-                            }else{
-                                buffer.writeBytes(data, i, actPaletteLength);
-                            }
-                            i += actPaletteLength;
+                            palette.add(ITechHider.readVarInt(data, i));
+                            i += ITechHider.readVarIntLength(data, i);
                         }
+
+                        int replacement = 0;
+                        for(int entry : palette){
+                            int blockId = entry >> 4;
+                            if(Config.HiddenBlocks.contains(blockId)){
+                                while(palette.contains((++replacement) << 4));
+                                entry = replacement << 4;
+                                changed = true;
+                            }
+                            buffer.writeBytes(ITechHider.writeVarInt(entry));
+                        }
+
                         int dataArrayLength = ITechHider.readVarInt(data, i);
                         int dataArrayLengthLength = ITechHider.readVarIntLength(data, i);
                         buffer.writeBytes(data, i, dataArrayLength * 8 + dataArrayLengthLength);
-- 
2.39.2