Support Team Toggle in Tower & Refactor MonsterTide

src/main/java/emu/grasscutter/game/dungeons/TowerDungeonSettleListener.java

@@ -9,6 +9,10 @@ public class TowerDungeonSettleListener implements DungeonSettleListener {
 
     @Override
     public void onDungeonSettle(Scene scene) {
+        if(scene.getScriptManager().getVariables().containsKey("stage")
+                && scene.getScriptManager().getVariables().get("stage") == 1){
+            return;
+        }
         scene.setAutoCloseTime(Utils.getCurrentSeconds() + 1000);
         var towerManager = scene.getPlayers().get(0).getTowerManager();
 

src/main/java/emu/grasscutter/game/entity/EntityMonster.java

@@ -117,7 +117,9 @@ public class EntityMonster extends GameEntity {
 			this.getScene().getDeadSpawnedEntities().add(getSpawnEntry());
 		}
 		if (getScene().getScriptManager().isInit() && this.getGroupId() > 0) {
-			getScene().getScriptManager().onMonsterDie();
+			if(getScene().getScriptManager().getScriptMonsterSpawnService() != null){
+				getScene().getScriptManager().getScriptMonsterSpawnService().onMonsterDead(this);
+			}
 			getScene().getScriptManager().callEvent(EventType.EVENT_ANY_MONSTER_DIE, null);
 		}
 		if (getScene().getChallenge() != null && getScene().getChallenge().getGroup().id == this.getGroupId()) {

src/main/java/emu/grasscutter/game/tower/TowerManager.java

@@ -7,10 +7,7 @@ import emu.grasscutter.data.def.TowerLevelData;
 import emu.grasscutter.game.dungeons.DungeonSettleListener;
 import emu.grasscutter.game.dungeons.TowerDungeonSettleListener;
 import emu.grasscutter.game.player.Player;
-import emu.grasscutter.server.packet.send.PacketCanUseSkillNotify;
+import emu.grasscutter.server.packet.send.*;
-import emu.grasscutter.server.packet.send.PacketTowerCurLevelRecordChangeNotify;
-import emu.grasscutter.server.packet.send.PacketTowerEnterLevelRsp;
-import emu.grasscutter.server.packet.send.PacketTowerLevelStarCondNotify;
 
 import java.util.HashMap;
 import java.util.List;
@@ -152,4 +149,10 @@ public class TowerManager {
         return recordMap.get(player.getServer().getTowerScheduleManager().getLastEntranceFloor())
                 .getStarCount() >= 6;
     }
+
+    public void mirrorTeamSetUp(int teamId) {
+        // use team user choose
+        player.getTeamManager().useTemporaryTeam(teamId);
+        player.sendPacket(new PacketTowerMiddleLevelChangeTeamNotify());
+    }
 }

src/main/java/emu/grasscutter/game/tower/TowerScheduleManager.java

@@ -49,6 +49,7 @@ public class TowerScheduleManager {
 
     public int getNextFloorId(int floorId){
         var entranceFloors = getCurrentTowerScheduleData().getEntranceFloorId();
+        var scheduleFloors = getScheduleFloors();
         var nextId = 0;
         // find in entrance floors first
         for(int i=0;i<entranceFloors.size()-1;i++){
@@ -56,10 +57,12 @@ public class TowerScheduleManager {
                 nextId = entranceFloors.get(i+1);
             }
         }
+        if(floorId == entranceFloors.get(entranceFloors.size()-1)){
+            nextId = scheduleFloors.get(0);
+        }
         if(nextId != 0){
             return nextId;
         }
-        var scheduleFloors = getScheduleFloors();
         // find in schedule floors
         for(int i=0;i<scheduleFloors.size()-1;i++){
             if(floorId == scheduleFloors.get(i)){

src/main/java/emu/grasscutter/scripts/SceneScriptManager.java

@@ -1,23 +1,20 @@
 package emu.grasscutter.scripts;
 
 import java.util.*;
-import java.util.concurrent.ConcurrentLinkedQueue;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
 import javax.script.Bindings;
 import javax.script.CompiledScript;
 import javax.script.ScriptException;
 
+import emu.grasscutter.scripts.service.ScriptMonsterSpawnService;
+import emu.grasscutter.scripts.service.ScriptMonsterTideService;
+import org.luaj.vm2.LuaError;
 import org.luaj.vm2.LuaValue;
 import org.luaj.vm2.lib.jse.CoerceJavaToLua;
 
 import emu.grasscutter.Grasscutter;
-import emu.grasscutter.data.GameData;
-import emu.grasscutter.data.def.MonsterData;
-import emu.grasscutter.data.def.WorldLevelData;
 import emu.grasscutter.game.entity.EntityGadget;
-import emu.grasscutter.game.entity.EntityMonster;
 import emu.grasscutter.game.world.Scene;
 import emu.grasscutter.scripts.constants.EventType;
 import emu.grasscutter.scripts.data.SceneBlock;
@@ -39,28 +36,36 @@ public class SceneScriptManager {
 	private final ScriptLib scriptLib;
 	private final LuaValue scriptLibLua;
 	private final Map<String, Integer> variables;
-	
 	private Bindings bindings;
 	private SceneConfig config;
 	private List<SceneBlock> blocks;
 	private boolean isInit;
-	
+	/**
-	private final Int2ObjectOpenHashMap<Set<SceneTrigger>> triggers;
+	 * SceneTrigger Set
+	 */
+	private final Map<String, SceneTrigger> triggers;
+	/**
+	 * current triggers controlled by RefreshGroup
+	 */
+	private final Int2ObjectOpenHashMap<Set<SceneTrigger>> currentTriggers;
 	private final Int2ObjectOpenHashMap<SceneRegion> regions;
+	private Map<Integer,SceneGroup> sceneGroups;
 	private SceneGroup currentGroup;
-	private AtomicInteger monsterAlive;
+	private ScriptMonsterTideService scriptMonsterTideService;
-	private AtomicInteger monsterTideCount;
+	private ScriptMonsterSpawnService scriptMonsterSpawnService;
-	private int monsterSceneLimit;
-	private ConcurrentLinkedQueue<Integer> monsterOrders;
 
 	public SceneScriptManager(Scene scene) {
 		this.scene = scene;
 		this.scriptLib = new ScriptLib(this);
 		this.scriptLibLua = CoerceJavaToLua.coerce(this.scriptLib);
-		this.triggers = new Int2ObjectOpenHashMap<>();
+		this.triggers = new HashMap<>();
+		this.currentTriggers = new Int2ObjectOpenHashMap<>();
+
 		this.regions = new Int2ObjectOpenHashMap<>();
 		this.variables = new HashMap<>();
-		
+		this.sceneGroups = new HashMap<>();
+		this.scriptMonsterSpawnService = new ScriptMonsterSpawnService(this);
+
 		// TEMPORARY
 		if (this.getScene().getId() < 10) {
 			return;
@@ -103,17 +108,35 @@ public class SceneScriptManager {
 	}
 
 	public Set<SceneTrigger> getTriggersByEvent(int eventId) {
-		return triggers.computeIfAbsent(eventId, e -> new HashSet<>());
+		return currentTriggers.computeIfAbsent(eventId, e -> new HashSet<>());
 	}
-	
 	public void registerTrigger(SceneTrigger trigger) {
+		this.triggers.put(trigger.name, trigger);
 		getTriggersByEvent(trigger.event).add(trigger);
 	}
 	
 	public void deregisterTrigger(SceneTrigger trigger) {
+		this.triggers.remove(trigger.name);
 		getTriggersByEvent(trigger.event).remove(trigger);
 	}
-	
+	public void resetTriggers(List<String> triggerNames) {
+		for(var name : triggerNames){
+			var instance = triggers.get(name);
+			this.currentTriggers.get(instance.event).clear();
+			this.currentTriggers.get(instance.event).add(instance);
+		}
+	}
+	public void refreshGroup(SceneGroup group, int suiteIndex){
+		var suite = group.getSuiteByIndex(suiteIndex);
+		if(suite == null){
+			return;
+		}
+		if(suite.triggers.size() > 0){
+			resetTriggers(suite.triggers);
+		}
+		spawnMonstersInGroup(group, suite);
+		spawnGadgetsInGroup(group, suite);
+	}
 	public SceneRegion getRegionById(int id) {
 		return regions.get(id);
 	}
@@ -263,6 +286,7 @@ public class SceneScriptManager {
 					}
 				}
 			}
+			this.sceneGroups.put(group.id, group);
 		} catch (ScriptException e) {
 			Grasscutter.getLogger().error("Error loading group " + group.id + " in scene " + getScene().getId(), e);
 		}
@@ -322,96 +346,36 @@ public class SceneScriptManager {
 			this.callEvent(EventType.EVENT_GADGET_CREATE, new ScriptArgs(entity.getConfigId()));
 		}
 	}
-	
+
 	public void spawnMonstersInGroup(SceneGroup group, int suiteIndex) {
 		var suite = group.getSuiteByIndex(suiteIndex);
 		if(suite == null){
 			return;
 		}
-		if(suite.sceneMonsters.size() > 0){
+		spawnMonstersInGroup(group, suite);
-			this.currentGroup = group;
+	}
-			this.monsterSceneLimit = 0;
+	public void spawnMonstersInGroup(SceneGroup group, SceneSuite suite) {
-			suite.sceneMonsters.forEach(mob -> spawnMonstersInGroup(group, mob));
+		if(suite == null || suite.sceneMonsters.size() <= 0){
+			return;
 		}
+		this.currentGroup = group;
+		suite.sceneMonsters.forEach(mob -> this.scriptMonsterSpawnService.spawnMonster(group.id, mob));
 	}
 	
 	public void spawnMonstersInGroup(SceneGroup group) {
 		this.currentGroup = group;
-		this.monsterSceneLimit = 0;
+		group.monsters.values().forEach(mob -> this.scriptMonsterSpawnService.spawnMonster(group.id, mob));
-		group.monsters.values().forEach(mob -> spawnMonstersInGroup(group, mob));
 	}
-	public void spawnMonstersInGroup(SceneGroup group,Integer[] ordersConfigId, int tideCount, int sceneLimit) {
+
+	public void startMonsterTideInGroup(SceneGroup group, Integer[] ordersConfigId, int tideCount, int sceneLimit) {
 		this.currentGroup = group;
-		this.monsterSceneLimit = sceneLimit;
+		this.scriptMonsterTideService =
-		this.monsterTideCount = new AtomicInteger(tideCount);
+				new ScriptMonsterTideService(this, group, tideCount, sceneLimit, ordersConfigId);
-		this.monsterAlive = new AtomicInteger(0);
-		this.monsterOrders = new ConcurrentLinkedQueue<>(List.of(ordersConfigId));
 
-		// add the last turn
-		group.monsters.keySet().stream()
-				.filter(i -> !this.monsterOrders.contains(i))
-				.forEach(this.monsterOrders::add);
-		for (int i = 0; i < sceneLimit; i++) {
-			spawnMonstersInGroup(group, group.monsters.get(this.monsterOrders.poll()));
-		}
 	}
-	public void spawnMonstersInGroup(SceneGroup group, SceneMonster monster) {
+	public void spawnMonstersByConfigId(int configId, int delayTime) {
-		if(monster == null){
+		// TODO delay
-			return;
+		this.scriptMonsterSpawnService.spawnMonster(this.currentGroup.id, this.currentGroup.monsters.get(configId));
-		}
-		if(this.monsterSceneLimit > 0){
-			this.monsterTideCount.decrementAndGet();
-			this.monsterAlive.incrementAndGet();
-		}
-
-		MonsterData data = GameData.getMonsterDataMap().get(monster.monster_id);
-
-		if (data == null) {
-			return;
-		}
-
-		// Calculate level
-		int level = monster.level;
-
-		if (getScene().getDungeonData() != null) {
-			level = getScene().getDungeonData().getShowLevel();
-		} else if (getScene().getWorld().getWorldLevel() > 0) {
-			WorldLevelData worldLevelData = GameData.getWorldLevelDataMap().get(getScene().getWorld().getWorldLevel());
-
-			if (worldLevelData != null) {
-				level = worldLevelData.getMonsterLevel();
-			}
-		}
-
-		// Spawn mob
-		EntityMonster entity = new EntityMonster(getScene(), data, monster.pos, level);
-		entity.getRotation().set(monster.rot);
-		entity.setGroupId(group.id);
-		entity.setConfigId(monster.config_id);
-
-		getScene().addEntity(entity);
-
-		callEvent(EventType.EVENT_ANY_MONSTER_LIVE, new ScriptArgs(entity.getConfigId()));
-	}
-
-	public void onMonsterDie(){
-		if(this.monsterSceneLimit <= 0){
-			return;
-		}
-		if(this.monsterAlive.decrementAndGet() >= this.monsterSceneLimit) {
-			// maybe not happen
-			return;
-		}
-		if(this.monsterTideCount.get() > 0){
-			// add more
-			spawnMonstersInGroup(this.currentGroup, this.currentGroup.monsters.get(this.monsterOrders.poll()));
-		}else if(this.monsterAlive.get() == 0){
-			// spawn the last turn of monsters
-			//callEvent(EventType.EVENT_MONSTER_TIDE_DIE, new ScriptArgs());
-			while(!this.monsterOrders.isEmpty()){
-				spawnMonstersInGroup(this.currentGroup, this.currentGroup.monsters.get(this.monsterOrders.poll()));
-			}
-		}
 	}
 	// Events
 	
@@ -432,17 +396,35 @@ public class SceneScriptManager {
 					args = CoerceJavaToLua.coerce(params);
 				}
 				
-				ret = condition.call(this.getScriptLibLua(), args);
+				ret = safetyCall(trigger.condition, condition, args);
 			}
 			
-			if (ret.checkboolean() == true) {
+			if (ret.isboolean() && ret.checkboolean()) {
 				LuaValue action = (LuaValue) this.getBindings().get(trigger.action);
-				action.call(this.getScriptLibLua(), LuaValue.NIL);
+				var arg = new ScriptArgs();
+				arg.param2 = 100;
+				var args = CoerceJavaToLua.coerce(arg);
+				safetyCall(trigger.action, action, args);
 			}
+			//TODO some ret may not bool
 		}
 	}
 
-//	public LuaValue safetyCall(){
+	public LuaValue safetyCall(String name, LuaValue func, LuaValue args){
-//
+		try{
-//	}
+			return func.call(this.getScriptLibLua(), args);
+		}catch (LuaError error){
+			ScriptLib.logger.error("[LUA] call trigger failed {},{}",name,args,error);
+			return LuaValue.valueOf(-1);
+		}
+	}
+
+	public ScriptMonsterTideService getScriptMonsterTideService() {
+		return scriptMonsterTideService;
+	}
+
+	public ScriptMonsterSpawnService getScriptMonsterSpawnService() {
+		return scriptMonsterSpawnService;
+	}
+
 }

src/main/java/emu/grasscutter/scripts/ScriptLib.java

@@ -28,7 +28,17 @@ public class ScriptLib {
 	public SceneScriptManager getSceneScriptManager() {
 		return sceneScriptManager;
 	}
-	
+
+	private String printTable(LuaTable table){
+		StringBuilder sb = new StringBuilder();
+		sb.append("{");
+		for(var meta : table.keys()){
+			sb.append(meta).append(":").append(table.get(meta)).append(",");
+		}
+		sb.append("}");
+		return sb.toString();
+	}
+
 	public int SetGadgetStateByConfigId(int configId, int gadgetState) {
 		logger.debug("[LUA] Call SetGadgetStateByConfigId with {},{}",
 				configId,gadgetState);
@@ -123,7 +133,7 @@ public class ScriptLib {
 			return 1;
 		}
 
-		this.getSceneScriptManager().spawnMonstersInGroup(group, ordersConfigId, tideCount, sceneLimit);
+		this.getSceneScriptManager().startMonsterTideInGroup(group, ordersConfigId, tideCount, sceneLimit);
 		
 		return 0;
 	}
@@ -204,10 +214,13 @@ public class ScriptLib {
 		getSceneScriptManager().getVariables().put(var, getSceneScriptManager().getVariables().get(var) + value);
 		return LuaValue.ZERO;
 	}
-	
+
+	/**
+	 * Set the actions and triggers to designated group
+	 */
 	public int RefreshGroup(LuaTable table) {
 		logger.debug("[LUA] Call RefreshGroup with {}",
-				table);
+				printTable(table));
 		// Kill and Respawn?
 		int groupId = table.get("group_id").toint();
 		int suite = table.get("suite").toint();
@@ -218,8 +231,7 @@ public class ScriptLib {
 			return 1;
 		}
 		
-		this.getSceneScriptManager().spawnMonstersInGroup(group, suite);
+		getSceneScriptManager().refreshGroup(group, suite);
-		this.getSceneScriptManager().spawnGadgetsInGroup(group, suite);
 		
 		return 0;
 	}
@@ -260,7 +272,7 @@ public class ScriptLib {
 	public int SetMonsterBattleByGroup(int var1, int var2, int var3){
 		logger.debug("[LUA] Call SetMonsterBattleByGroup with {},{},{}",
 				var1,var2,var3);
-
+		// TODO
 		return 0;
 	}
 
@@ -270,7 +282,7 @@ public class ScriptLib {
 
 		return 0;
 	}
-	// 8-1
+
 	public int GetGroupVariableValueByGroup(String name, int groupId){
 		logger.debug("[LUA] Call GetGroupVariableValueByGroup with {},{}",
 				name,groupId);
@@ -288,7 +300,7 @@ public class ScriptLib {
 
 	public int KillEntityByConfigId(LuaTable table){
 		logger.debug("[LUA] Call KillEntityByConfigId with {}",
-				table);
+				printTable(table));
 		var configId = table.get("config_id");
 		if(configId == LuaValue.NIL){
 			return 1;
@@ -306,6 +318,26 @@ public class ScriptLib {
 		logger.debug("[LUA] Call SetGroupVariableValueByGroup with {},{},{}",
 				key,value,groupId);
 
+		getSceneScriptManager().getVariables().put(key, value);
+		return 0;
+	}
+
+	public int CreateMonster(LuaTable table){
+		logger.debug("[LUA] Call CreateMonster with {}",
+				printTable(table));
+		var configId = table.get("config_id").toint();
+		var delayTime = table.get("delay_time").toint();
+
+		getSceneScriptManager().spawnMonstersByConfigId(configId, delayTime);
+		return 0;
+	}
+
+	public int TowerMirrorTeamSetUp(int team, int var1) {
+		logger.debug("[LUA] Call TowerMirrorTeamSetUp with {},{}",
+				team,var1);
+
+		getSceneScriptManager().getScene().getPlayers().get(0).getTowerManager().mirrorTeamSetUp(team-1);
+
 		return 0;
 	}
 

src/main/java/emu/grasscutter/scripts/data/SceneTrigger.java

@@ -7,4 +7,18 @@ public class SceneTrigger {
 	public String source;
 	public String condition;
 	public String action;
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj instanceof SceneTrigger sceneTrigger){
+			return this.name.equals(sceneTrigger.name);
+		}
+		return super.equals(obj);
+	}
+
+	@Override
+	public int hashCode() {
+		return name.hashCode();
+	}
+
 }

src/main/java/emu/grasscutter/scripts/service/ScriptMonsterSpawnService.java

@@ -0,0 +1,73 @@
+package emu.grasscutter.scripts.service;
+
+import emu.grasscutter.data.GameData;
+import emu.grasscutter.data.def.MonsterData;
+import emu.grasscutter.data.def.WorldLevelData;
+import emu.grasscutter.game.entity.EntityMonster;
+import emu.grasscutter.scripts.SceneScriptManager;
+import emu.grasscutter.scripts.constants.EventType;
+import emu.grasscutter.scripts.data.SceneMonster;
+import emu.grasscutter.scripts.data.ScriptArgs;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+public class ScriptMonsterSpawnService {
+
+    private final SceneScriptManager sceneScriptManager;
+    private final List<Consumer<EntityMonster>> onMonsterCreatedListener = new ArrayList<>();
+
+    private final List<Consumer<EntityMonster>> onMonsterDeadListener = new ArrayList<>();
+
+    public ScriptMonsterSpawnService(SceneScriptManager sceneScriptManager){
+        this.sceneScriptManager = sceneScriptManager;
+    }
+
+    public void addMonsterCreatedListener(Consumer<EntityMonster> consumer){
+        onMonsterCreatedListener.add(consumer);
+    }
+    public void addMonsterDeadListener(Consumer<EntityMonster> consumer){
+        onMonsterCreatedListener.add(consumer);
+    }
+
+    public void onMonsterDead(EntityMonster entityMonster){
+        onMonsterCreatedListener.stream().forEach(l -> l.accept(entityMonster));
+    }
+    public void spawnMonster(int groupId, SceneMonster monster) {
+        if(monster == null){
+            return;
+        }
+
+        MonsterData data = GameData.getMonsterDataMap().get(monster.monster_id);
+
+        if (data == null) {
+            return;
+        }
+
+        // Calculate level
+        int level = monster.level;
+
+        if (sceneScriptManager.getScene().getDungeonData() != null) {
+            level = sceneScriptManager.getScene().getDungeonData().getShowLevel();
+        } else if (sceneScriptManager.getScene().getWorld().getWorldLevel() > 0) {
+            WorldLevelData worldLevelData = GameData.getWorldLevelDataMap().get(sceneScriptManager.getScene().getWorld().getWorldLevel());
+
+            if (worldLevelData != null) {
+                level = worldLevelData.getMonsterLevel();
+            }
+        }
+
+        // Spawn mob
+        EntityMonster entity = new EntityMonster(sceneScriptManager.getScene(), data, monster.pos, level);
+        entity.getRotation().set(monster.rot);
+        entity.setGroupId(groupId);
+        entity.setConfigId(monster.config_id);
+
+        onMonsterCreatedListener.forEach(action -> action.accept(entity));
+
+        sceneScriptManager.getScene().addEntity(entity);
+
+        sceneScriptManager.callEvent(EventType.EVENT_ANY_MONSTER_LIVE, new ScriptArgs(entity.getConfigId()));
+    }
+}

src/main/java/emu/grasscutter/scripts/service/ScriptMonsterTideService.java

@@ -0,0 +1,74 @@
+package emu.grasscutter.scripts.service;
+
+import emu.grasscutter.game.entity.EntityMonster;
+import emu.grasscutter.scripts.SceneScriptManager;
+import emu.grasscutter.scripts.constants.EventType;
+import emu.grasscutter.scripts.data.SceneGroup;
+import emu.grasscutter.scripts.data.SceneMonster;
+import emu.grasscutter.scripts.data.ScriptArgs;
+
+import java.util.List;
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ScriptMonsterTideService {
+    private final SceneScriptManager sceneScriptManager;
+    private final SceneGroup currentGroup;
+    private final AtomicInteger monsterAlive;
+    private final AtomicInteger monsterTideCount;
+    private final AtomicInteger monsterKillCount;
+    private final int monsterSceneLimit;
+    private final ConcurrentLinkedQueue<Integer> monsterConfigOrders;
+
+    public ScriptMonsterTideService(SceneScriptManager sceneScriptManager,
+                     SceneGroup group, int tideCount, int monsterSceneLimit, Integer[] ordersConfigId){
+        this.sceneScriptManager = sceneScriptManager;
+        this.currentGroup = group;
+        this.monsterSceneLimit = monsterSceneLimit;
+        this.monsterTideCount = new AtomicInteger(tideCount);
+        this.monsterKillCount = new AtomicInteger(0);
+        this.monsterAlive = new AtomicInteger(0);
+        this.monsterConfigOrders = new ConcurrentLinkedQueue<>(List.of(ordersConfigId));
+
+        this.sceneScriptManager.getScriptMonsterSpawnService().addMonsterCreatedListener(this::onMonsterCreated);
+        this.sceneScriptManager.getScriptMonsterSpawnService().addMonsterDeadListener(this::onMonsterDead);
+        // spawn the first turn
+        for (int i = 0; i < this.monsterSceneLimit; i++) {
+            this.sceneScriptManager.getScriptMonsterSpawnService().spawnMonster(group.id, getNextMonster());
+        }
+    }
+
+    public void onMonsterCreated(EntityMonster entityMonster){
+        if(this.monsterSceneLimit > 0){
+            this.monsterTideCount.decrementAndGet();
+            this.monsterAlive.incrementAndGet();
+        }
+    }
+
+    public SceneMonster getNextMonster(){
+        var nextId = this.monsterConfigOrders.poll();
+        if(currentGroup.monsters.containsKey(nextId)){
+            return currentGroup.monsters.get(nextId);
+        }
+        // TODO some monster config_id do not exist in groups, so temporarily set it to the first
+        return currentGroup.monsters.values().stream().findFirst().orElse(null);
+    }
+
+    public void onMonsterDead(EntityMonster entityMonster){
+        if(this.monsterSceneLimit <= 0){
+            return;
+        }
+        if(this.monsterAlive.decrementAndGet() >= this.monsterSceneLimit) {
+            // maybe not happen
+            return;
+        }
+        this.monsterKillCount.incrementAndGet();
+        if(this.monsterTideCount.get() > 0){
+            // add more
+            this.sceneScriptManager.getScriptMonsterSpawnService().spawnMonster(this.currentGroup.id, getNextMonster());
+        }else if(this.monsterAlive.get() == 0){
+            // spawn the last turn of monsters
+            this.sceneScriptManager.callEvent(EventType.EVENT_MONSTER_TIDE_DIE, new ScriptArgs(this.monsterKillCount.get()));
+        }
+    }
+}

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

@@ -0,0 +1,18 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.TowerMiddleLevelChangeTeamNotifyOuterClass;
+
+public class PacketTowerMiddleLevelChangeTeamNotify extends BasePacket {
+
+	public PacketTowerMiddleLevelChangeTeamNotify() {
+		super(PacketOpcodes.TowerMiddleLevelChangeTeamNotify);
+
+		TowerMiddleLevelChangeTeamNotifyOuterClass.TowerMiddleLevelChangeTeamNotify proto =
+				TowerMiddleLevelChangeTeamNotifyOuterClass.TowerMiddleLevelChangeTeamNotify.newBuilder()
+				.build();
+		
+		this.setData(proto);
+	}
+}