LeavesMC/leaves-server/minecraft-patches/features/0030-Player-operation-limiter.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Sun, 11 Dec 2022 18:43:35 +0800
Subject: [PATCH] Player operation limiter

This patch is Powered by plusls-carpet-addition(https://github.com/plusls/plusls-carpet-addition)

diff --git a/net/minecraft/server/level/ServerPlayer.java b/net/minecraft/server/level/ServerPlayer.java
index a86d63ffc53d1af12f55be9592b0259667d5c367..f74eaf852ed5d111dd318bce5290a6c319d22c40 100644
--- a/net/minecraft/server/level/ServerPlayer.java
+++ b/net/minecraft/server/level/ServerPlayer.java
@@ -393,6 +393,10 @@ public class ServerPlayer extends Player implements ca.spottedleaf.moonrise.patc
     public com.destroystokyo.paper.event.entity.PlayerNaturallySpawnCreaturesEvent playerNaturallySpawnedEvent; // Paper - PlayerNaturallySpawnCreaturesEvent
     public @Nullable String clientBrandName = null; // Paper - Brand support
     public org.bukkit.event.player.PlayerQuitEvent.QuitReason quitReason = null; // Paper - Add API for quit reason; there are a lot of changes to do if we change all methods leading to the event
+    // Leaves start - player operation limiter
+    private int instaBreakCountPerTick = 0;
+    private int placeBlockCountPerTick = 0;
+    // Leaves end - player operation limiter
 
     // Paper start - rewrite chunk system
     private ca.spottedleaf.moonrise.patches.chunk_system.player.RegionizedPlayerChunkLoader.PlayerChunkLoaderData chunkLoader;
@@ -798,6 +802,7 @@ public class ServerPlayer extends Player implements ca.spottedleaf.moonrise.patc
         }
         // CraftBukkit end
         this.tickClientLoadTimeout();
+        this.resetOperationCountPerTick(); // Leaves - player operation limiter
         this.gameMode.tick();
         this.wardenSpawnTracker.tick();
         if (this.invulnerableTime > 0) {
@@ -3084,4 +3089,31 @@ public class ServerPlayer extends Player implements ca.spottedleaf.moonrise.patc
         return (org.bukkit.craftbukkit.entity.CraftPlayer) super.getBukkitEntity();
     }
     // CraftBukkit end
+
+    // Leaves start - player operation limiter
+    private void resetOperationCountPerTick() {
+        instaBreakCountPerTick = 0;
+        placeBlockCountPerTick = 0;
+    }
+
+    public int getInstaBreakCountPerTick() {
+        return instaBreakCountPerTick;
+    }
+
+    public int getPlaceBlockCountPerTick() {
+        return placeBlockCountPerTick;
+    }
+
+    public void addInstaBreakCountPerTick() {
+        ++instaBreakCountPerTick;
+    }
+
+    public void addPlaceBlockCountPerTick() {
+        ++placeBlockCountPerTick;
+    }
+
+    public boolean allowOperation() {
+        return (instaBreakCountPerTick == 0 || placeBlockCountPerTick == 0) && (instaBreakCountPerTick <= 1 && placeBlockCountPerTick <= 2);
+    }
+    // Leaves end - player operation limiter
 }
diff --git a/net/minecraft/server/level/ServerPlayerGameMode.java b/net/minecraft/server/level/ServerPlayerGameMode.java
index 623c069f1fe079e020c6391a3db1a3d95cd3dbf5..d2b2290c73826278a89eb02ab81ee503ee41a4a2 100644
--- a/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -303,6 +303,19 @@ public class ServerPlayerGameMode {
     }
 
     public void destroyAndAck(BlockPos pos, int sequence, String message) {
+        // Leaves start - player operation limiter
+        if (org.leavesmc.leaves.LeavesConfig.modify.playerOperationLimiter) {
+            if (message.equals("insta mine")) {
+                player.addInstaBreakCountPerTick();
+                if (!player.allowOperation()) {
+                    this.level.getCraftServer().getPluginManager().callEvent(new org.leavesmc.leaves.event.player.PlayerOperationLimitEvent(player.getBukkitEntity(), org.leavesmc.leaves.event.player.PlayerOperationLimitEvent.Operation.MINE, org.bukkit.craftbukkit.block.CraftBlock.at(level, pos)));
+                    this.player.connection.send(new ClientboundBlockUpdatePacket(pos, this.level.getBlockState(pos)));
+                    this.debugLogging(pos, false, sequence, message);
+                    return;
+                }
+            }
+        }
+        // Leaves end - player operation limiter
         if (this.destroyBlock(pos)) {
             this.debugLogging(pos, true, sequence, message);
         } else {
diff --git a/net/minecraft/world/item/BlockItem.java b/net/minecraft/world/item/BlockItem.java
index e619a872d51bf0be64ff594c916c89a5bbf1d3fc..1f4a3d2610abfa2ea2b1d5feba9606b806d6d416 100644
--- a/net/minecraft/world/item/BlockItem.java
+++ b/net/minecraft/world/item/BlockItem.java
@@ -72,6 +72,21 @@ public class BlockItem extends Item {
                 final org.bukkit.block.BlockState oldBukkitState = bukkitState != null ? bukkitState : org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(blockPlaceContext.getLevel(), blockPlaceContext.getClickedPos()); // Paper - Reset placed block on exception
                 // CraftBukkit end
 
+                // Leaves start - player operation limiter
+                if (org.leavesmc.leaves.LeavesConfig.modify.playerOperationLimiter && !context.getLevel().isClientSide()) {
+                    ServerPlayer player = (ServerPlayer) context.getPlayer();
+                    if (player != null && placementState != null) {
+                        player.addPlaceBlockCountPerTick();
+                        if (!player.allowOperation()) {
+                            if (bukkitState != null) {
+                                context.getLevel().getCraftServer().getPluginManager().callEvent(new org.leavesmc.leaves.event.player.PlayerOperationLimitEvent(player.getBukkitEntity(), org.leavesmc.leaves.event.player.PlayerOperationLimitEvent.Operation.PLACE, bukkitState.getBlock()));
+                            }
+                            return InteractionResult.FAIL;
+                        }
+                    }
+                }
+                // Leaves end - player operation limiter
+
                 if (placementState == null) {
                     return InteractionResult.FAIL;
                 } else if (!this.placeBlock(blockPlaceContext, placementState)) {