Fix player pausing

src/main/java/emu/grasscutter/game/player/Player.java

@@ -771,7 +771,7 @@ public class Player implements PlayerHook {
     }
 
     public void setPaused(boolean newPauseState) {
-        boolean oldPauseState = this.paused;
+        var oldPauseState = this.paused;
         this.paused = newPauseState;
 
         if (newPauseState && !oldPauseState) {
@@ -1498,8 +1498,10 @@ public class Player implements PlayerHook {
                         PropChangeReason.PROP_CHANGE_REASON_PLAYER_ADD_EXP));
                     case PROP_PLAYER_LEVEL -> this.sendPacket(new PacketPlayerPropChangeReasonNotify(this, prop, currentValue, value,
                         PropChangeReason.PROP_CHANGE_REASON_LEVELUP));
-                    case PROP_PLAYER_WORLD_LEVEL -> this.sendPacket(new PacketPlayerPropChangeReasonNotify(this, prop, currentValue, value,
+
-                        PropChangeReason.PROP_CHANGE_REASON_MANUAL_ADJUST_WORLD_LEVEL));
+                    // TODO: Handle world level changing.
+                    // case PROP_PLAYER_WORLD_LEVEL -> this.sendPacket(new PacketPlayerPropChangeReasonNotify(this, prop, currentValue, value,
+                    //     PropChangeReason.PROP_CHANGE_REASON_MANUAL_ADJUST_WORLD_LEVEL));
                 }
 
                 // Update player with packet.

src/main/java/emu/grasscutter/game/world/World.java

@@ -1,7 +1,5 @@
 package emu.grasscutter.game.world;
 
-import static emu.grasscutter.server.event.player.PlayerTeleportEvent.TeleportType.SCRIPT;
-
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.data.excels.dungeon.DungeonData;
 import emu.grasscutter.game.player.Player;
@@ -24,13 +22,17 @@ import emu.grasscutter.utils.Position;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMaps;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import lombok.Getter;
+import lombok.val;
+import org.jetbrains.annotations.NotNull;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.stream.Collectors;
-import lombok.Getter;
+
-import lombok.val;
+import static emu.grasscutter.server.event.player.PlayerTeleportEvent.TeleportType.SCRIPT;
 
 public final class World implements Iterable<Player> {
     @Getter private final GameServer server;
@@ -477,7 +479,12 @@ public final class World implements Iterable<Player> {
      * @param paused True if the world should be paused.
      */
     public void setPaused(boolean paused) {
-        this.getWorldTime(); // Update the world time.
+        // Check if this world is a multiplayer world.
+        if (this.isMultiplayer) return;
+
+        // Update the world time.
+        this.getWorldTime();
+        this.updateTime();
 
         // If the world is being un-paused, update the last update time.
         if (this.isPaused != paused && !paused) {
@@ -526,6 +533,16 @@ public final class World implements Iterable<Player> {
                 player -> player.getQuestManager().queueEvent(QuestContent.QUEST_CONTENT_GAME_TIME_TICK));
     }
 
+    /**
+     * Notifies all players of the current world time.
+     */
+    public void updateTime() {
+        this.getPlayers().forEach(p ->
+            p.sendPacket(new PacketPlayerGameTimeNotify(p)));
+        this.getPlayers().forEach(p ->
+            p.sendPacket(new PacketSceneTimeNotify(p)));
+    }
+
     /**
      * Locks the world time.
      *
@@ -535,10 +552,12 @@ public final class World implements Iterable<Player> {
         this.timeLocked = locked;
 
         // Notify players of the locking.
+        this.updateTime();
         this.getPlayers()
                 .forEach(player -> player.setProperty(PlayerProperty.PROP_IS_GAME_TIME_LOCKED, locked));
     }
 
+    @NotNull
     @Override
     public Iterator<Player> iterator() {
         return this.getPlayers().iterator();

src/main/java/emu/grasscutter/server/packet/recv/HandlerPlayerSetPauseReq.java

@@ -4,22 +4,25 @@ import emu.grasscutter.net.packet.Opcodes;
 import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.PlayerSetPauseReqOuterClass.PlayerSetPauseReq;
+import emu.grasscutter.net.proto.RetcodeOuterClass.Retcode;
 import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketPlayerSetPauseRsp;
-import emu.grasscutter.server.packet.send.PacketPlayerTimeNotify;
-import emu.grasscutter.server.packet.send.PacketSceneTimeNotify;
 
 @Opcodes(PacketOpcodes.PlayerSetPauseReq)
 public class HandlerPlayerSetPauseReq extends PacketHandler {
 
     @Override
     public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
-        PlayerSetPauseReq req = PlayerSetPauseReq.parseFrom(payload);
+        var req = PlayerSetPauseReq.parseFrom(payload);
+        var player = session.getPlayer();
+        var world = player.getWorld();
 
-        session.send(new PacketPlayerSetPauseRsp());
+        // Check if the player is in a multiplayer world.
-        session.getPlayer().setPaused(req.getIsPaused());
+        if (player.isInMultiplayer()) {
-
+            session.send(new PacketPlayerSetPauseRsp(Retcode.RET_FAIL));
-        session.send(new PacketPlayerTimeNotify(session.getPlayer()));
+        } else {
-        session.send(new PacketSceneTimeNotify(session.getPlayer()));
+            world.setPaused(req.getIsPaused());
+            session.send(new PacketPlayerSetPauseRsp(Retcode.RET_SUCC));
+        }
     }
 }

src/main/java/emu/grasscutter/server/packet/send/PacketPlayerSetPauseRsp.java

@@ -7,9 +7,10 @@ import emu.grasscutter.net.proto.RetcodeOuterClass.Retcode;
 
 public class PacketPlayerSetPauseRsp extends BasePacket {
 
-    public PacketPlayerSetPauseRsp() {
+    public PacketPlayerSetPauseRsp(Retcode retcode) {
         super(PacketOpcodes.PlayerSetPauseRsp);
 
-        this.setData(PlayerSetPauseRsp.newBuilder().setRetcode(Retcode.RET_SUCC_VALUE));
+        this.setData(PlayerSetPauseRsp.newBuilder()
+            .setRetcode(retcode.getNumber()));
     }
 }