2021-11-30 23:47:10 +01:00
|
|
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
|
|
From: Noah van der Aa <ndvdaa@gmail.com>
|
|
|
|
Date: Tue, 3 Aug 2021 17:28:27 +0200
|
|
|
|
Subject: [PATCH] Hide unnecessary itemmeta from clients
|
|
|
|
|
|
|
|
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
2021-12-01 03:59:09 +01:00
|
|
|
index fd5927247e23878fd8bf6ab62a2eb477d07f4cc3..19ee843fa118a3b1b2c6b5551e9c6af7e7fcca11 100644
|
2021-11-30 23:47:10 +01:00
|
|
|
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
|
|
|
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
|
2021-12-01 02:31:13 +01:00
|
|
|
@@ -916,6 +916,13 @@ public class PaperWorldConfig {
|
2021-11-30 23:47:10 +01:00
|
|
|
behaviorTickRates = loadTickRates("behavior");
|
|
|
|
}
|
|
|
|
|
|
|
|
+ public boolean hideItemmetaFromClients = true;
|
|
|
|
+ public boolean hideDurabilityFromClients = false;
|
|
|
|
+ private void getHideItemmetaFromClients() {
|
|
|
|
+ hideItemmetaFromClients = getBoolean("anticheat.obfuscation.items.hide-itemmeta", hideItemmetaFromClients);
|
|
|
|
+ hideDurabilityFromClients = getBoolean("anticheat.obfuscation.items.hide-durability", hideDurabilityFromClients);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
private com.google.common.collect.Table<String, String, Integer> loadTickRates(String type) {
|
|
|
|
log(" " + type + ":");
|
|
|
|
com.google.common.collect.Table<String, String, Integer> table = com.google.common.collect.HashBasedTable.create();
|
|
|
|
diff --git a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
|
|
index 3eb6bf4258b1de4697f96c2011df493cf7414a0c..0feadee6077dd6a8d8fd05b7a7d15ec1aa728fbb 100644
|
|
|
|
--- a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
|
|
+++ b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
|
|
@@ -127,6 +127,7 @@ public class EntityDataSerializers {
|
|
|
|
public static final EntityDataSerializer<ItemStack> ITEM_STACK = new EntityDataSerializer<ItemStack>() {
|
|
|
|
@Override
|
|
|
|
public void write(FriendlyByteBuf buf, ItemStack value) {
|
|
|
|
+ net.minecraft.world.entity.LivingEntity.stripMeta(value, null); // Paper - strip items to prevent oversized data
|
|
|
|
buf.writeItem(value);
|
|
|
|
}
|
|
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
2021-12-01 03:59:09 +01:00
|
|
|
index 62daf918d4ab00963041ca869ae718f14f2e3337..09f3b7eba463a647c38ce0f87af6ad5c1c8ed0c0 100644
|
2021-11-30 23:47:10 +01:00
|
|
|
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
|
|
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
|
|
@@ -3047,11 +3047,59 @@ public abstract class LivingEntity extends Entity {
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
+ public static void stripMeta(ItemStack itemStack, @org.jetbrains.annotations.Nullable Level level) {
|
2021-12-01 03:59:09 +01:00
|
|
|
+ if (itemStack.getTag() != null && !itemStack.isEmpty()) {
|
2021-11-30 23:47:10 +01:00
|
|
|
+ CompoundTag nbt = itemStack.getTag();
|
|
|
|
+ if (level != null && level.paperConfig.hideDurabilityFromClients) {
|
|
|
|
+ // Only show damage values for elytra's, since they show a different texture when broken.
|
|
|
|
+ if (!itemStack.is(Items.ELYTRA) || itemStack.getDamageValue() < itemStack.getMaxDamage() - 1) {
|
|
|
|
+ itemStack.setDamageValue(0);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (level != null && level.paperConfig.hideItemmetaFromClients) {
|
|
|
|
+ // Some resource packs show different textures when there is more than one item. Since this shouldn't provide a big advantage,
|
|
|
|
+ // we'll tell the client if there's one or (more than) two items.
|
|
|
|
+ itemStack.setCount(itemStack.getCount() > 1 ? 2 : 1);
|
|
|
|
+ // We can't just strip out display, leather helmets still use the display.color tag.
|
|
|
|
+ if (nbt.get("display") instanceof CompoundTag displayTag) {
|
|
|
|
+ displayTag.remove("Lore");
|
|
|
|
+ displayTag.remove("Name");
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ if (nbt.get("Enchantments") instanceof ListTag enchantmentsTag && !enchantmentsTag.isEmpty()) {
|
|
|
|
+ // The client still renders items with the enchantment glow if the enchantments tag contains at least one (empty) child.
|
|
|
|
+ ListTag enchantments = new ListTag();
|
|
|
|
+ enchantments.add(new CompoundTag());
|
|
|
|
+ nbt.put("Enchantments", enchantments);
|
|
|
|
+ }
|
|
|
|
+ nbt.remove("AttributeModifiers");
|
|
|
|
+ }
|
|
|
|
+ // Always remove items to prevent oversized data
|
|
|
|
+ // Bundles change their texture based on their fullness.
|
|
|
|
+ if (itemStack.is(Items.BUNDLE) && nbt.get("Items") instanceof ListTag oldItems && !oldItems.isEmpty()) {
|
|
|
|
+ org.bukkit.inventory.meta.BundleMeta bundleMeta = (org.bukkit.inventory.meta.BundleMeta) itemStack.asBukkitMirror().getItemMeta();
|
|
|
|
+ int sizeUsed = 0;
|
|
|
|
+ for (org.bukkit.inventory.ItemStack item : bundleMeta.getItems()) {
|
|
|
|
+ int scale = 64 / item.getMaxStackSize();
|
|
|
|
+ sizeUsed += scale * item.getAmount();
|
|
|
|
+ }
|
|
|
|
+ // Now we add a single fake item that uses the same amount of slots as all other items.
|
|
|
|
+ ListTag items = new ListTag();
|
|
|
|
+ items.add(new ItemStack(Items.PAPER, sizeUsed).save(new CompoundTag()));
|
|
|
|
+ nbt.put("Items", items);
|
|
|
|
+ }
|
|
|
|
+ nbt.remove("BlockEntityTag");
|
|
|
|
+ nbt.remove("EntityTag");
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
private void handleEquipmentChanges(Map<EquipmentSlot, ItemStack> equipmentChanges) {
|
|
|
|
List<Pair<EquipmentSlot, ItemStack>> list = Lists.newArrayListWithCapacity(equipmentChanges.size());
|
|
|
|
|
|
|
|
equipmentChanges.forEach((enumitemslot, itemstack) -> {
|
|
|
|
ItemStack itemstack1 = itemstack.copy();
|
|
|
|
+ stripMeta(itemstack1, this.level); // Paper - hide unnecessary itemmeta from clients
|
|
|
|
|
|
|
|
list.add(Pair.of(enumitemslot, itemstack1));
|
|
|
|
switch (enumitemslot.getType()) {
|