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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/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 4658883ffc150e38d29d5387784587e6299fab65..81f611fef60518da5ee1bc34dcd7b8688818b096 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -822,7 +822,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
chunkproviderserver.getLightEngine().setTaskPerBatch(worldserver.paperConfig.lightQueueSize); // Paper - increase light queue size
// CraftBukkit start
// this.updateMobSpawningFlags();
- worldserver.setSpawnSettings(this.isSpawningMonsters(), this.isSpawningAnimals());
+ worldserver.setSpawnSettings(worldserver.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && ((DedicatedServer) this).settings.getProperties().spawnMonsters, this.isSpawningAnimals()); // Paper - per level difficulty (from setDifficulty(ServerLevel, Difficulty, boolean))
this.forceTicks = false;
// CraftBukkit end
@@ -1737,11 +1737,14 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
}
}
- public void setDifficulty(Difficulty difficulty, boolean forceUpdate) {
- if (forceUpdate || !this.worldData.isDifficultyLocked()) {
- this.worldData.setDifficulty(this.worldData.isHardcore() ? Difficulty.HARD : difficulty);
- this.updateMobSpawningFlags();
- this.getPlayerList().getPlayers().forEach(this::sendDifficultyUpdate);
+ // Paper start - remember per level difficulty
+ public void setDifficulty(ServerLevel level, Difficulty difficulty, boolean forceUpdate) {
+ PrimaryLevelData worldData = level.serverLevelData;
+ if (forceUpdate || !worldData.isDifficultyLocked()) {
+ worldData.setDifficulty(worldData.isHardcore() ? Difficulty.HARD : difficulty);
+ level.setSpawnSettings(worldData.getDifficulty() != Difficulty.PEACEFUL && ((DedicatedServer) this).settings.getProperties().spawnMonsters, this.isSpawningAnimals());
+ // this.getPlayerList().getPlayers().forEach(this::sendDifficultyUpdate);
+ // Paper end
}
}
@@ -1755,7 +1758,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
while (iterator.hasNext()) {
ServerLevel worldserver = (ServerLevel) iterator.next();
- worldserver.setSpawnSettings(this.isSpawningMonsters(), this.isSpawningAnimals());
+ worldserver.setSpawnSettings(worldserver.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && ((DedicatedServer) this).settings.getProperties().spawnMonsters, this.isSpawningAnimals()); // Paper - per level difficulty (from setDifficulty(ServerLevel, Difficulty, boolean))
}
}
diff --git a/src/main/java/net/minecraft/server/commands/DifficultyCommand.java b/src/main/java/net/minecraft/server/commands/DifficultyCommand.java
index e23dca1a711955417ef3f590960d4e7a388b9147..36dd28498eb75152a79dae4353ef657a0485403d 100644
--- a/src/main/java/net/minecraft/server/commands/DifficultyCommand.java
+++ b/src/main/java/net/minecraft/server/commands/DifficultyCommand.java
@@ -47,7 +47,7 @@ public class DifficultyCommand {
if (worldServer.getDifficulty() == difficulty) { // CraftBukkit
throw DifficultyCommand.ERROR_ALREADY_DIFFICULT.create(difficulty.getKey());
} else {
- worldServer.serverLevelData.setDifficulty(difficulty); // CraftBukkit
+ minecraftserver.setDifficulty(worldServer, difficulty, true); // Paper - don't skip other difficulty-changing logic (fix upstream's fix)
source.sendSuccess(new TranslatableComponent("commands.difficulty.success", new Object[]{difficulty.getDisplayName()}), true);
return 0;
}
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index cec0082718c2a729044d6f19d74b8e4425816725..8eca8825008713467a20f84d71ed0f32d5a40e47 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -369,7 +369,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
@Override
public void forceDifficulty() {
- this.setDifficulty(this.getProperties().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/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index a7a3c17cf97486f9f1af0cdc00686c22b37449b6..5a4eeb46543d9458e309e2d4cc56086b5cf528c6 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1114,7 +1114,7 @@ public class ServerPlayer extends Player {
this.isChangingDimension = true; // CraftBukkit - Set teleport invulnerability only if player changing worlds
this.connection.send(new ClientboundRespawnPacket(worldserver.dimensionTypeRegistration(), worldserver.dimension(), BiomeManager.obfuscateSeed(worldserver.getSeed()), this.gameMode.getGameModeForPlayer(), this.gameMode.getPreviousGameModeForPlayer(), worldserver.isDebug(), worldserver.isFlat(), true));
- this.connection.send(new ClientboundChangeDifficultyPacket(this.level.getDifficulty(), this.level.getLevelData().isDifficultyLocked()));
+ this.connection.send(new ClientboundChangeDifficultyPacket(worldserver.getDifficulty(), this.level.getLevelData().isDifficultyLocked())); // Paper - fix difficulty sync issue
PlayerList playerlist = this.server.getPlayerList();
playerlist.sendPlayerPermissionLevel(this);
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 770f11ad28f17427306e79509ecd192555854f1e..e3cc64933133d086bb14b6a941f6dd30d31d970c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -3059,7 +3059,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
public void handleChangeDifficulty(ServerboundChangeDifficultyPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
if (this.player.hasPermissions(2) || this.isSingleplayerOwner()) {
- this.server.setDifficulty(packet.getDifficulty(), false);
+ //this.minecraftServer.a(packetplayindifficultychange.b(), false); // Paper - don't allow clients to change this
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index b00e95dabbccda983c0e2823bd31b8806ef7933d..c26fd12b2eb9706e3e5850883b9388d56cbdb2fb 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -944,8 +944,8 @@ public final class CraftServer implements Server {
org.spigotmc.SpigotConfig.init((File) console.options.valueOf("spigot-settings")); // Spigot
com.destroystokyo.paper.PaperConfig.init((File) console.options.valueOf("paper-settings")); // Paper
for (ServerLevel world : this.console.getAllLevels()) {
- world.serverLevelData.setDifficulty(config.difficulty);
- world.setSpawnSettings(config.spawnMonsters, config.spawnAnimals);
+ // world.serverLevelData.setDifficulty(config.difficulty); // Paper - per level difficulty
+ world.setSpawnSettings(world.serverLevelData.getDifficulty() != Difficulty.PEACEFUL && config.spawnMonsters, config.spawnAnimals); // Paper - per level difficulty (from MinecraftServer#setDifficulty(ServerLevel, Difficulty, boolean))
for (SpawnCategory spawnCategory : SpawnCategory.values()) {
if (CraftSpawnCategory.isValidForLimits(spawnCategory)) {
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