LeavesMC/patches/server/0043-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/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 6767665e55ca1ec9cf2707918c349fd3ea5ada8a..6c15eb1a368aa41c44521054b95a8a46776d76a4 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -282,6 +282,10 @@ public class ServerPlayer extends Player {
     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 - replace player chunk loader
     private final java.util.concurrent.atomic.AtomicReference<io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances> viewDistances = new java.util.concurrent.atomic.AtomicReference<>(new io.papermc.paper.chunk.system.RegionizedPlayerChunkLoader.ViewDistances(-1, -1, -1));
@@ -723,6 +727,7 @@ public class ServerPlayer extends Player {
             this.joining = false;
         }
         // CraftBukkit end
+        this.resetOperationCountPerTick(); // Leaves - player operation limiter
         this.gameMode.tick();
         this.wardenSpawnTracker.tick();
         --this.spawnInvulnerableTime;
@@ -2768,5 +2773,32 @@ public class ServerPlayer extends Player {
     public CraftPlayer getBukkitEntity() {
         return (CraftPlayer) super.getBukkitEntity();
     }
+
+    // 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
     // CraftBukkit end
 }
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index a7b217ddbcbf92513bd38101fdfca2075505e267..e4436d3f479246eff4b0ad06d6d24fc12b4e0c90 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -44,6 +44,7 @@ import org.bukkit.event.Event;
 import org.bukkit.event.block.Action;
 import org.bukkit.event.player.PlayerGameModeChangeEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
+import top.leavesmc.leaves.event.player.PlayerOperationLimitEvent;
 // CraftBukkit end
 
 public class ServerPlayerGameMode {
@@ -331,6 +332,19 @@ public class ServerPlayerGameMode {
     }
 
     public void destroyAndAck(BlockPos pos, int sequence, String reason) {
+        // Leaves start - player operation limiter
+        if (top.leavesmc.leaves.LeavesConfig.playerOperationLimiter) {
+            if (reason.equals("insta mine")) {
+                player.addInstaBreakCountPerTick();
+                if (!player.allowOperation()) {
+                    MinecraftServer.getServer().server.getPluginManager().callEvent(new PlayerOperationLimitEvent(player.getBukkitEntity(), PlayerOperationLimitEvent.Operation.MINE, CraftBlock.at(level, pos)));
+                    this.player.connection.send(new ClientboundBlockUpdatePacket(pos, this.level.getBlockState(pos)));
+                    this.debugLogging(pos, false, sequence, reason);
+                    return;
+                }
+            }
+        }
+        // Leaves end - player operation limiter
         if (this.destroyBlock(pos)) {
             this.debugLogging(pos, true, sequence, reason);
         } else {
diff --git a/src/main/java/net/minecraft/world/item/BlockItem.java b/src/main/java/net/minecraft/world/item/BlockItem.java
index d5e7cc59314b2f16d7665bc0ad8cea576f1f1235..e1ffc1b52641e9cf91f524a83b8c8ee047932d1a 100644
--- a/src/main/java/net/minecraft/world/item/BlockItem.java
+++ b/src/main/java/net/minecraft/world/item/BlockItem.java
@@ -32,9 +32,12 @@ import net.minecraft.world.level.block.state.StateDefinition;
 import net.minecraft.world.level.block.state.properties.Property;
 import net.minecraft.world.level.gameevent.GameEvent;
 import net.minecraft.world.phys.shapes.CollisionContext;
+import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.block.CraftBlock;
+import org.bukkit.craftbukkit.block.CraftBlockState;
 import org.bukkit.craftbukkit.block.data.CraftBlockData;
 import org.bukkit.event.block.BlockCanBuildEvent;
+import top.leavesmc.leaves.event.player.PlayerOperationLimitEvent;
 // CraftBukkit end
 
 public class BlockItem extends Item {
@@ -83,6 +86,20 @@ public class BlockItem extends Item {
                 final org.bukkit.block.BlockState oldBlockstate = blockstate != null ? blockstate : org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(blockactioncontext1.getLevel(), blockactioncontext1.getClickedPos()); // Paper - Reset placed block on exception
                 // CraftBukkit end
 
+                // Leaves start - player operation limiter
+                if (top.leavesmc.leaves.LeavesConfig.playerOperationLimiter && !context.getLevel().isClientSide()) {
+                    ServerPlayer player = (ServerPlayer) context.getPlayer();
+                    if (player != null && iblockdata != null) {
+                        player.addPlaceBlockCountPerTick();
+                        if (!player.allowOperation()) {
+                            if (blockstate != null) {
+                                MinecraftServer.getServer().server.getPluginManager().callEvent(new PlayerOperationLimitEvent(player.getBukkitEntity(), PlayerOperationLimitEvent.Operation.PLACE, blockstate.getBlock()));
+                            }
+                            return InteractionResult.FAIL;
+                        }
+                    }
+                }
+                // Leaves end - player operation limiter
                 if (iblockdata == null) {
                     return InteractionResult.FAIL;
                 } else if (!this.placeBlock(blockactioncontext1, iblockdata)) {