PaperMC/Spigot-Server-Patches/0510-Fix-Per-World-Difficulty-Remembering-Difficulty.patch
Shane Freeder 7ef05fbd8a Do not perform neighbour updates when using debug stick (Fixes #2134)
CB blindly drops any update flags when recording block modifications,
this causes the debug stick to blindly update neighbouring blocks on usage
in order to control this, we will special case this item, however, this
ideally should be fixed by recording the actual update flags used,
but will induce ABI breaks...

This patch also maintains the behavior of the BlockPlaceEvent, this
behavior will NOT be guaranteed in the future, however.
2020-12-22 22:45:10 +00:00

77 lines
4.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 28 Jun 2020 03:59:10 -0400
Subject: [PATCH] Fix Per World Difficulty / Remembering Difficulty
Fixes per world difficulty with /difficulty command and also
makes it so that the server keeps the last difficulty used instead
of restoring the server.properties every single load.
diff --git a/src/main/java/net/minecraft/server/CommandDifficulty.java b/src/main/java/net/minecraft/server/CommandDifficulty.java
index bc71070c670d1a64c60b9f19711a5e8a50ace56e..9efc743e028650ccc9cda5a2c9deb1836253b91d 100644
--- a/src/main/java/net/minecraft/server/CommandDifficulty.java
+++ b/src/main/java/net/minecraft/server/CommandDifficulty.java
@@ -36,10 +36,11 @@ public class CommandDifficulty {
public static int a(CommandListenerWrapper commandlistenerwrapper, EnumDifficulty enumdifficulty) throws CommandSyntaxException {
MinecraftServer minecraftserver = commandlistenerwrapper.getServer();
- if (minecraftserver.getSaveData().getDifficulty() == enumdifficulty) {
+ WorldServer world = commandlistenerwrapper.getWorld(); // Paper
+ if (world.worldDataServer.getDifficulty() == enumdifficulty) { // Paper
throw CommandDifficulty.a.create(enumdifficulty.c());
} else {
- minecraftserver.a(enumdifficulty, true);
+ minecraftserver.a(world, enumdifficulty, true); // Paper
commandlistenerwrapper.sendMessage(new ChatMessage("commands.difficulty.success", new Object[]{enumdifficulty.b()}), true);
return 0;
}
diff --git a/src/main/java/net/minecraft/server/DedicatedServer.java b/src/main/java/net/minecraft/server/DedicatedServer.java
index f5792b999ce42acb13ae9a62ceb2ddec39abe209..5504facd2e453238caa71d98743be5416d4dd4fe 100644
--- a/src/main/java/net/minecraft/server/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/DedicatedServer.java
@@ -323,7 +323,7 @@ public class DedicatedServer extends MinecraftServer implements IMinecraftServer
@Override
public void updateWorldSettings() {
- this.a(this.getDedicatedServerProperties().difficulty, true);
+ //this.a(this.getDedicatedServerProperties().difficulty, true); // Paper - Don't overwrite level.dat's difficulty, keep current
}
@Override
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 450c04c5a1153ea9d11d005f3be623bbf8b26ce6..157f8f5e5255312b916aef200810ad387fac915f 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1520,11 +1520,14 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
}
}
- public void a(EnumDifficulty enumdifficulty, boolean flag) {
- if (flag || !this.saveData.isDifficultyLocked()) {
- this.saveData.setDifficulty(this.saveData.isHardcore() ? EnumDifficulty.HARD : enumdifficulty);
- this.bc();
- this.getPlayerList().getPlayers().forEach(this::b);
+ // Paper start - fix per world difficulty
+ public void a(WorldServer world, EnumDifficulty enumdifficulty, boolean flag) {
+ WorldDataServer worldData = world.worldDataServer;
+ if (flag || !worldData.isDifficultyLocked()) {
+ worldData.setDifficulty(worldData.isHardcore() ? EnumDifficulty.HARD : enumdifficulty);
+ world.setSpawnFlags(worldData.getDifficulty() != EnumDifficulty.PEACEFUL && ((DedicatedServer)this).propertyManager.getProperties().spawnMonsters, this.getSpawnAnimals());
+ //world.players.forEach(this::b);
+ // Paper end
}
}
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 5240af35fcec03f350596cecc74a4230f257e7b4..9b54d690e09f719a18ba321a0c927bb31c71bf01 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2882,7 +2882,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
public void a(PacketPlayInDifficultyChange packetplayindifficultychange) {
PlayerConnectionUtils.ensureMainThread(packetplayindifficultychange, this, this.player.getWorldServer());
if (this.player.k(2) || this.isExemptPlayer()) {
- this.minecraftServer.a(packetplayindifficultychange.b(), false);
+ //this.minecraftServer.a(packetplayindifficultychange.b(), false); // Paper - don't allow clients to change this
}
}