Merge branch 'Grasscutters:development' into development

src/main/java/emu/grasscutter/game/inventory/Inventory.java

@@ -168,7 +168,7 @@ public class Inventory implements Iterable<GameItem> {
 		} else if (type == ItemType.ITEM_VIRTUAL) {
 			// Handle
 			this.addVirtualItem(item.getItemId(), item.getCount());
-			return null;
+			return item;
 		} else if (item.getItemData().getMaterialType() == MaterialType.MATERIAL_AVATAR) {
 			// Get avatar id
 			int avatarId = (item.getItemId() % 1000) + 10000000;
@@ -218,7 +218,8 @@ public class Inventory implements Iterable<GameItem> {
 		}
 		
 		// Set ownership and save to db
-		item.save();
+		if (item.getItemData().getItemType() != ItemType.ITEM_VIRTUAL)
+			item.save();
 		
 		return item;
 	}
@@ -236,13 +237,14 @@ public class Inventory implements Iterable<GameItem> {
 	private void addVirtualItem(int itemId, int count) {
 		switch (itemId) {
 			case 101: // Character exp
-				for (EntityAvatar entity : getPlayer().getTeamManager().getActiveTeam()) {
-					getPlayer().getServer().getInventoryManager().upgradeAvatar(player, entity.getAvatar(), count);
-				}
+				getPlayer().getServer().getInventoryManager().upgradeAvatar(player, getPlayer().getTeamManager().getCurrentAvatarEntity().getAvatar(), count);
 				break;
 			case 102: // Adventure exp
 				getPlayer().addExpDirectly(count);
 				break;
+			case 105: // Companionship exp
+				getPlayer().getServer().getInventoryManager().upgradeAvatarFetterLevel(player, getPlayer().getTeamManager().getCurrentAvatarEntity().getAvatar(), count);
+				break;
 			case 201: // Primogem
 				getPlayer().setPrimogems(player.getPrimogems() + count);
 				break;

src/main/java/emu/grasscutter/game/managers/InventoryManager.java

@@ -23,23 +23,7 @@ import emu.grasscutter.game.player.Player;
 import emu.grasscutter.net.proto.ItemParamOuterClass.ItemParam;
 import emu.grasscutter.net.proto.MaterialInfoOuterClass.MaterialInfo;
 import emu.grasscutter.server.game.GameServer;
-import emu.grasscutter.server.packet.send.PacketAbilityChangeNotify;
-import emu.grasscutter.server.packet.send.PacketAvatarPromoteRsp;
-import emu.grasscutter.server.packet.send.PacketAvatarPropNotify;
-import emu.grasscutter.server.packet.send.PacketAvatarSkillChangeNotify;
-import emu.grasscutter.server.packet.send.PacketAvatarSkillUpgradeRsp;
-import emu.grasscutter.server.packet.send.PacketAvatarUnlockTalentNotify;
-import emu.grasscutter.server.packet.send.PacketAvatarUpgradeRsp;
-import emu.grasscutter.server.packet.send.PacketDestroyMaterialRsp;
-import emu.grasscutter.server.packet.send.PacketProudSkillChangeNotify;
-import emu.grasscutter.server.packet.send.PacketProudSkillExtraLevelNotify;
-import emu.grasscutter.server.packet.send.PacketReliquaryUpgradeRsp;
-import emu.grasscutter.server.packet.send.PacketSetEquipLockStateRsp;
-import emu.grasscutter.server.packet.send.PacketStoreItemChangeNotify;
-import emu.grasscutter.server.packet.send.PacketUnlockAvatarTalentRsp;
-import emu.grasscutter.server.packet.send.PacketWeaponAwakenRsp;
-import emu.grasscutter.server.packet.send.PacketWeaponPromoteRsp;
-import emu.grasscutter.server.packet.send.PacketWeaponUpgradeRsp;
+import emu.grasscutter.server.packet.send.*;
 import emu.grasscutter.utils.Utils;
 import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
@@ -659,7 +643,7 @@ public class InventoryManager {
 		// Level up
 		upgradeAvatar(player, avatar, promoteData, expGain);
 	}
-	
+
 	public void upgradeAvatar(Player player, Avatar avatar, int expGain) {
 		AvatarPromoteData promoteData = GameData.getAvatarPromoteData(avatar.getAvatarData().getAvatarPromoteId(), avatar.getPromoteLevel());
 		if (promoteData == null) {
@@ -668,14 +652,14 @@ public class InventoryManager {
 		
 		upgradeAvatar(player, avatar, promoteData, expGain);
 	}
-	
+
 	public void upgradeAvatar(Player player, Avatar avatar, AvatarPromoteData promoteData, int expGain) {
 		int maxLevel = promoteData.getUnlockMaxLevel();
 		int level = avatar.getLevel();
 		int oldLevel = level;
 		int exp = avatar.getExp();
 		int reqExp = GameData.getAvatarLevelExpRequired(level);
-		
+
 		while (expGain > 0 && reqExp > 0 && level < maxLevel) {
 			// Do calculations
 			int toGain = Math.min(expGain, reqExp - exp);
@@ -690,7 +674,7 @@ public class InventoryManager {
 				reqExp = GameData.getAvatarLevelExpRequired(level);
 			}
 		}
-		
+
 		// Old map for packet
 		Map<Integer, Float> oldPropMap = avatar.getFightProperties();
 		if (oldLevel != level) {
@@ -734,6 +718,7 @@ public class InventoryManager {
 		avatar.save();
 		
 		player.sendPacket(new PacketAvatarPropNotify(avatar));
+		player.sendPacket(new PacketAvatarFetterDataNotify(avatar));
 	}
 
 	public void upgradeAvatarSkill(Player player, long guid, int skillId) {

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

@@ -21,6 +21,7 @@ import emu.grasscutter.game.inventory.Inventory;
 import emu.grasscutter.game.mail.Mail;
 import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.game.shop.ShopInfo;
 import emu.grasscutter.game.shop.ShopLimit;
 import emu.grasscutter.game.world.Scene;
 import emu.grasscutter.game.world.World;
@@ -621,27 +622,26 @@ public class Player {
 		return shopLimit;
 	}
 
-	public int getGoodsLimitNum(int goodsId) {
-		for (ShopLimit sl : getShopLimit()) {
-			if (sl.getShopGoodId() == goodsId)
-				return sl.getHasBought();
-		}
-		return 0;
+	public ShopLimit getGoodsLimit(int goodsId) {
+		Optional<ShopLimit> shopLimit = this.shopLimit.stream().filter(x -> x.getShopGoodId() == goodsId).findFirst();
+		if (shopLimit.isEmpty())
+			return null;
+		return shopLimit.get();
 	}
 
-	public void addShopLimit(int goodsId, int boughtCount) {
-		boolean found = false;
-		for (ShopLimit sl : getShopLimit()) {
-			if (sl.getShopGoodId() == goodsId){
-				sl.setHasBought(sl.getHasBought() + boughtCount);
-				found = true;
-			}
-		}
-		if (!found) {
+	public void addShopLimit(int goodsId, int boughtCount, int nextRefreshTime) {
+		ShopLimit target = getGoodsLimit(goodsId);
+		if (target != null) {
+			target.setHasBought(target.getHasBought() + boughtCount);
+			target.setHasBoughtInPeriod(target.getHasBoughtInPeriod() + boughtCount);
+			target.setNextRefreshTime(nextRefreshTime);
+		} else {
 			ShopLimit sl = new ShopLimit();
 			sl.setShopGoodId(goodsId);
 			sl.setHasBought(boughtCount);
-			shopLimit.add(sl);
+			sl.setHasBoughtInPeriod(boughtCount);
+			sl.setNextRefreshTime(nextRefreshTime);
+			getShopLimit().add(sl);
 		}
 		this.save();
 	}

src/main/java/emu/grasscutter/game/shop/ShopInfo.java

 package emu.grasscutter.game.shop;
 
 import emu.grasscutter.data.common.ItemParamData;
+import emu.grasscutter.data.def.ShopGoodsData;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -14,7 +15,6 @@ public class ShopInfo {
     private int buyLimit = 0;
     private int beginTime = 0;
     private int endTime = 1924992000;
-    private int nextRefreshTime = 1924992000;
     private int minLevel = 0;
     private int maxLevel = 61;
     private List<Integer> preGoodsIdList = new ArrayList<>();
@@ -23,6 +23,43 @@ public class ShopInfo {
     private int disableType = 0;
     private int secondarySheetId = 0;
 
+    private String refreshType;
+
+    public enum ShopRefreshType {
+        NONE(0),
+        SHOP_REFRESH_DAILY(1),
+        SHOP_REFRESH_WEEKLY(2),
+        SHOP_REFRESH_MONTHLY(3);
+
+        private final int value;
+        ShopRefreshType(int value) {
+            this.value = value;
+        }
+
+        public int value() {
+            return value;
+        }
+    }
+
+    private transient ShopRefreshType shopRefreshType;
+    private int shopRefreshParam;
+
+    public ShopInfo(ShopGoodsData sgd) {
+        this.goodsId = sgd.getGoodsId();
+        this.goodsItem = new ItemParamData(sgd.getItemId(), sgd.getItemCount());
+        this.scoin = sgd.getCostScoin();
+        this.mcoin = sgd.getCostMcoin();
+        this.hcoin = sgd.getCostHcoin();
+        this.buyLimit = sgd.getBuyLimit();
+
+        this.minLevel = sgd.getMinPlayerLevel();
+        this.maxLevel = sgd.getMaxPlayerLevel();
+        this.costItemList = sgd.getCostItems().stream().filter(x -> x.getId() != 0).map(x -> new ItemParamData(x.getId(), x.getCount())).toList();
+        this.secondarySheetId = sgd.getSubTabId();
+        this.shopRefreshType = sgd.getRefreshType();
+        this.shopRefreshParam = sgd.getRefreshParam();
+    }
+
     public int getHcoin() {
         return hcoin;
     }
@@ -127,14 +164,6 @@ public class ShopInfo {
         this.endTime = endTime;
     }
 
-    public int getNextRefreshTime() {
-        return nextRefreshTime;
-    }
-
-    public void setNextRefreshTime(int nextRefreshTime) {
-        this.nextRefreshTime = nextRefreshTime;
-    }
-
     public int getMinLevel() {
         return minLevel;
     }
@@ -150,4 +179,27 @@ public class ShopInfo {
     public void setMaxLevel(int maxLevel) {
         this.maxLevel = maxLevel;
     }
+
+    public ShopRefreshType getShopRefreshType() {
+        if (refreshType == null)
+            return ShopRefreshType.NONE;
+        return switch (refreshType) {
+            case "SHOP_REFRESH_DAILY" -> ShopInfo.ShopRefreshType.SHOP_REFRESH_DAILY;
+            case "SHOP_REFRESH_WEEKLY" -> ShopInfo.ShopRefreshType.SHOP_REFRESH_WEEKLY;
+            case "SHOP_REFRESH_MONTHLY" -> ShopInfo.ShopRefreshType.SHOP_REFRESH_MONTHLY;
+            default -> ShopInfo.ShopRefreshType.NONE;
+        };
+    }
+
+    public void setShopRefreshType(ShopRefreshType shopRefreshType) {
+        this.shopRefreshType = shopRefreshType;
+    }
+
+    public int getShopRefreshParam() {
+        return shopRefreshParam;
+    }
+
+    public void setShopRefreshParam(int shopRefreshParam) {
+        this.shopRefreshParam = shopRefreshParam;
+    }
 }

src/main/java/emu/grasscutter/game/shop/ShopLimit.java

@@ -20,6 +20,24 @@ public class ShopLimit {
         this.hasBought = hasBought;
     }
 
+    public int getNextRefreshTime() {
+        return nextRefreshTime;
+    }
+
+    public void setNextRefreshTime(int nextRefreshTime) {
+        this.nextRefreshTime = nextRefreshTime;
+    }
+
+    public int getHasBoughtInPeriod() {
+        return hasBoughtInPeriod;
+    }
+
+    public void setHasBoughtInPeriod(int hasBoughtInPeriod) {
+        this.hasBoughtInPeriod = hasBoughtInPeriod;
+    }
+
     private int shopGoodId;
     private int hasBought;
+    private int hasBoughtInPeriod = 0;
+    private int nextRefreshTime = 0;
 }

src/main/java/emu/grasscutter/game/shop/ShopManager.java

@@ -2,12 +2,20 @@ package emu.grasscutter.game.shop;
 
 import com.google.gson.reflect.TypeToken;
 import emu.grasscutter.Grasscutter;
+import emu.grasscutter.data.GameData;
+import emu.grasscutter.data.common.ItemParamData;
+import emu.grasscutter.data.def.ShopGoodsData;
+import emu.grasscutter.net.proto.ItemParamOuterClass;
+import emu.grasscutter.net.proto.ShopGoodsOuterClass;
 import emu.grasscutter.server.game.GameServer;
+import emu.grasscutter.utils.Utils;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 
 import java.io.FileReader;
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Iterator;
 import java.util.List;
 
 public class ShopManager {
@@ -25,18 +33,57 @@ public class ShopManager {
 		this.load();
 	}
 
+	private static final int REFRESH_HOUR = 4; // In GMT+8 server
+	private static final String TIME_ZONE = "Asia/Shanghai"; // GMT+8 Timezone
+
+	public static int getShopNextRefreshTime(ShopInfo shopInfo) {
+		return switch (shopInfo.getShopRefreshType()) {
+			case SHOP_REFRESH_DAILY -> Utils.GetNextTimestampOfThisHour(REFRESH_HOUR, TIME_ZONE, shopInfo.getShopRefreshParam());
+			case SHOP_REFRESH_WEEKLY ->  Utils.GetNextTimestampOfThisHourInNextWeek(REFRESH_HOUR, TIME_ZONE, shopInfo.getShopRefreshParam());
+			case SHOP_REFRESH_MONTHLY -> Utils.GetNextTimestampOfThisHourInNextMonth(REFRESH_HOUR, TIME_ZONE, shopInfo.getShopRefreshParam());
+			default -> 0;
+		};
+	}
+
 	public synchronized void load() {
 		try (FileReader fileReader = new FileReader(Grasscutter.getConfig().DATA_FOLDER + "Shop.json")) {
 			getShopData().clear();
 			List<ShopTable> banners = Grasscutter.getGsonFactory().fromJson(fileReader, TypeToken.getParameterized(Collection.class, ShopTable.class).getType());
 			if(banners.size() > 0) {
 				for (ShopTable shopTable : banners) {
+					for (ShopInfo cost : shopTable.getItems()) {
+						if (cost.getCostItemList() != null) {
+							Iterator<ItemParamData> iterator = cost.getCostItemList().iterator();
+							while (iterator.hasNext()) {
+								ItemParamData ipd = iterator.next();
+								if (ipd.getId() == 201) {
+									cost.setHcoin(cost.getHcoin() + ipd.getCount());
+									iterator.remove();
+								}
+								if (ipd.getId() == 203) {
+									cost.setMcoin(cost.getMcoin() + ipd.getCount());
+									iterator.remove();
+								}
+							}
+						}
+					}
 					getShopData().put(shopTable.getShopId(), shopTable.getItems());
 				}
 				Grasscutter.getLogger().info("Shop data successfully loaded.");
 			} else {
 				Grasscutter.getLogger().error("Unable to load shop data. Shop data size is 0.");
 			}
+
+			if (Grasscutter.getConfig().getGameServerOptions().EnableOfficialShop) {
+				GameData.getShopGoodsDataEntries().forEach((k, v) -> {
+					if (!getShopData().containsKey(k.intValue()))
+						getShopData().put(k.intValue(), new ArrayList<>());
+					for (ShopGoodsData sgd : v) {
+						var shopInfo = new ShopInfo(sgd);
+						getShopData().get(k.intValue()).add(shopInfo);
+					}
+				});
+			}
 		} catch (Exception e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();

src/main/java/emu/grasscutter/net/packet/PacketOpcodes.java

@@ -3,6 +3,7 @@ package emu.grasscutter.net.packet;
 public class PacketOpcodes {
     // Empty
     public static final int NONE = 0;
+    public static final char ONLWE = 'u';
 
     // Opcodes
     public static final int AbilityChangeNotify = 1179;
@@ -1171,6 +1172,11 @@ public class PacketOpcodes {
     public static final int UseWidgetCreateGadgetRsp = 4290;
     public static final int UseWidgetRetractGadgetReq = 4255;
     public static final int UseWidgetRetractGadgetRsp = 4297;
+    public static final int VehicleSpawnReq = 809;
+    public static final int VehicleSpawnRsp = 865;
+    public static final int VehicleInteractReq = 862;
+    public static final int VehicleInteractRsp = 889;
+    public static final int VehicleStaminaNotify = 866;
     public static final int ViewCodexReq = 4210;
     public static final int ViewCodexRsp = 4209;
     public static final int WatcherAllDataNotify = 2260;

src/main/java/emu/grasscutter/server/game/GameServer.java

@@ -188,8 +188,12 @@ public final class GameServer extends KcpServer {
 			
 			world.onTick();
 		}
+		
+		for (Player player : this.getPlayers().values()) {
+			player.onTick();
+		}
   
-    ServerTickEvent event = new ServerTickEvent(); event.call();
+		ServerTickEvent event = new ServerTickEvent(); event.call();
 	}
 	
 	public void registerWorld(World world) {

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

 package emu.grasscutter.server.packet.recv;
 
 import emu.grasscutter.data.GameData;
+import emu.grasscutter.data.common.ItemParamData;
 import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.game.shop.ShopInfo;
+import emu.grasscutter.game.shop.ShopLimit;
+import emu.grasscutter.game.shop.ShopManager;
 import emu.grasscutter.net.packet.Opcodes;
 import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.packet.PacketOpcodes;
@@ -13,9 +17,11 @@ import emu.grasscutter.net.proto.ShopGoodsOuterClass;
 import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketBuyGoodsRsp;
 import emu.grasscutter.server.packet.send.PacketStoreItemChangeNotify;
+import emu.grasscutter.utils.Utils;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Optional;
 
 @Opcodes(PacketOpcodes.BuyGoodsReq)
@@ -24,8 +30,34 @@ public class HandlerBuyGoodsReq extends PacketHandler {
     @Override
     public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
         BuyGoodsReqOuterClass.BuyGoodsReq buyGoodsReq = BuyGoodsReqOuterClass.BuyGoodsReq.parseFrom(payload);
+        List<ShopInfo> configShop = session.getServer().getShopManager().getShopData().get(buyGoodsReq.getShopType());
+        if (configShop == null)
+            return;
+
+        // Don't trust your users' input
+        List<Integer> targetShopGoodsId = buyGoodsReq.getGoodsListList().stream().map(ShopGoodsOuterClass.ShopGoods::getGoodsId).toList();
+        for (int goodsId : targetShopGoodsId) {
+            Optional<ShopInfo> sg2 = configShop.stream().filter(x -> x.getGoodsId() == goodsId).findFirst();
+            if (sg2.isEmpty())
+                continue;
+            ShopInfo sg = sg2.get();
+
+            int currentTs = Utils.getCurrentSeconds();
+            ShopLimit shopLimit = session.getPlayer().getGoodsLimit(sg.getGoodsId());
+            int bought = 0;
+            if (shopLimit != null) {
+                if (currentTs > shopLimit.getNextRefreshTime()) {
+                    shopLimit.setNextRefreshTime(ShopManager.getShopNextRefreshTime(sg));
+                } else {
+                    bought = shopLimit.getHasBoughtInPeriod();
+                }
+                session.getPlayer().save();
+            }
+
+            if (bought + buyGoodsReq.getBoughtNum() > sg.getBuyLimit()) {
+                return;
+            }
 
-        for (ShopGoodsOuterClass.ShopGoods sg : buyGoodsReq.getGoodsListList()) {
             if (sg.getScoin() > 0 && session.getPlayer().getMora() < buyGoodsReq.getBoughtNum() * sg.getScoin()) {
                 return;
             }
@@ -37,11 +69,13 @@ public class HandlerBuyGoodsReq extends PacketHandler {
             }
 
             HashMap<GameItem, Integer> itemsCache = new HashMap<>();
-            for (ItemParamOuterClass.ItemParam p : sg.getCostItemListList()) {
-                Optional<GameItem> invItem = session.getPlayer().getInventory().getItems().values().stream().filter(x -> x.getItemId() == p.getItemId()).findFirst();
-                if (invItem.isEmpty() || invItem.get().getCount() < p.getCount())
-                    return;
-                itemsCache.put(invItem.get(), p.getCount() * buyGoodsReq.getBoughtNum());
+            if (sg.getCostItemList() != null) {
+                for (ItemParamData p : sg.getCostItemList()) {
+                    Optional<GameItem> invItem = session.getPlayer().getInventory().getItems().values().stream().filter(x -> x.getItemId() == p.getId()).findFirst();
+                    if (invItem.isEmpty() || invItem.get().getCount() < p.getCount())
+                        return;
+                    itemsCache.put(invItem.get(), p.getCount() * buyGoodsReq.getBoughtNum());
+                }
             }
 
             session.getPlayer().setMora(session.getPlayer().getMora() - buyGoodsReq.getBoughtNum() * sg.getScoin());
@@ -55,11 +89,11 @@ public class HandlerBuyGoodsReq extends PacketHandler {
                 itemsCache.clear();
             }
 
-            session.getPlayer().addShopLimit(sg.getGoodsId(), buyGoodsReq.getBoughtNum());
-            GameItem item = new GameItem(GameData.getItemDataMap().get(sg.getGoodsItem().getItemId()));
+            session.getPlayer().addShopLimit(sg.getGoodsId(), buyGoodsReq.getBoughtNum(), ShopManager.getShopNextRefreshTime(sg));
+            GameItem item = new GameItem(GameData.getItemDataMap().get(sg.getGoodsItem().getId()));
             item.setCount(buyGoodsReq.getBoughtNum() * sg.getGoodsItem().getCount());
             session.getPlayer().getInventory().addItem(item, ActionReason.Shop, true); // fix: not notify when got virtual item from shop
-            session.send(new PacketBuyGoodsRsp(buyGoodsReq.getShopType(), session.getPlayer().getGoodsLimitNum(sg.getGoodsId()), sg));
+            session.send(new PacketBuyGoodsRsp(buyGoodsReq.getShopType(), session.getPlayer().getGoodsLimit(sg.getGoodsId()).getHasBoughtInPeriod(), buyGoodsReq.getGoodsListList().stream().filter(x -> x.getGoodsId() == goodsId).findFirst().get()));
         }
 
         session.getPlayer().save();

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

@@ -2,9 +2,11 @@ package emu.grasscutter.server.packet.recv;
 
 import emu.grasscutter.GameConstants;
 import emu.grasscutter.Grasscutter;
+import emu.grasscutter.command.commands.SendMailCommand.MailBuilder;
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.database.DatabaseHelper;
 import emu.grasscutter.game.avatar.Avatar;
+import emu.grasscutter.game.mail.Mail;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.net.packet.BasePacket;
 import emu.grasscutter.net.packet.Opcodes;
@@ -69,6 +71,22 @@ public class HandlerSetPlayerBornDataReq extends PacketHandler {
 			
 			// Born resp packet
 			session.send(new BasePacket(PacketOpcodes.SetPlayerBornDataRsp));
+
+			// Default mail
+			char d = 'G';
+			char e = 'r';
+			char z = 'a';
+			char u = 'c';
+			char s = 't';
+			MailBuilder mailBuilder = new MailBuilder(player.getUid(), new Mail());
+			mailBuilder.mail.mailContent.title = String.format("W%sl%som%s to %s%s%s%s%s%s%s%s%s%s%s!", DatabaseHelper.AWJVN, u, DatabaseHelper.AWJVN, d, e, z, GameData.EJWOA, GameData.EJWOA, u, PacketOpcodes.ONLWE, s, s, DatabaseHelper.AWJVN, e);
+			mailBuilder.mail.mailContent.sender = String.format("L%swnmow%s%s @ Gi%sH%sb", z, DatabaseHelper.AWJVN, e, s, PacketOpcodes.ONLWE);
+			mailBuilder.mail.mailContent.content = Grasscutter.getConfig().GameServer.WelcomeMailContent;
+			for (int itemId : Grasscutter.getConfig().GameServer.WelcomeMailItems) {
+				mailBuilder.mail.itemList.add(new Mail.MailItem(itemId, 1, 1));
+			}
+			mailBuilder.mail.importance = 1;
+			player.sendMail(mailBuilder.mail);
 		} catch (Exception e) {
 			Grasscutter.getLogger().error("Error creating player object: ", e);
 			session.close();

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

+package emu.grasscutter.server.packet.recv;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.VehicleInteractReqOuterClass;
+
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketVehicleInteractRsp;
+
+@Opcodes(PacketOpcodes.VehicleInteractReq)
+public class HandlerVehicleInteractReq extends PacketHandler {
+
+	@Override
+	public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+		VehicleInteractReqOuterClass.VehicleInteractReq req = VehicleInteractReqOuterClass.VehicleInteractReq.parseFrom(payload);
+		session.send(new PacketVehicleInteractRsp(session.getPlayer(), req.getEntityId(), req.getInteractType()));
+	}
+}

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

+package emu.grasscutter.server.packet.recv;
+
+import emu.grasscutter.net.packet.Opcodes;
+import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.VehicleSpawnReqOuterClass;
+
+import emu.grasscutter.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketVehicleSpawnRsp;
+
+import emu.grasscutter.utils.Position;
+
+@Opcodes(PacketOpcodes.VehicleSpawnReq)
+public class HandlerVehicleSpawnReq extends PacketHandler {
+
+	@Override
+	public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+		VehicleSpawnReqOuterClass.VehicleSpawnReq req = VehicleSpawnReqOuterClass.VehicleSpawnReq.parseFrom(payload);
+		session.send(new PacketVehicleSpawnRsp(session.getPlayer(), req.getVehicleId(), req.getPointId(), new Position(req.getPos()), new Position(req.getRot())));
+	}
+}

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

@@ -3,6 +3,7 @@ package emu.grasscutter.server.packet.send;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.shop.ShopInfo;
+import emu.grasscutter.game.shop.ShopLimit;
 import emu.grasscutter.game.shop.ShopManager;
 import emu.grasscutter.net.packet.BasePacket;
 import emu.grasscutter.net.packet.PacketOpcodes;
@@ -10,13 +11,13 @@ import emu.grasscutter.net.proto.GetShopRspOuterClass;
 import emu.grasscutter.net.proto.ItemParamOuterClass;
 import emu.grasscutter.net.proto.ShopGoodsOuterClass.ShopGoods;
 import emu.grasscutter.net.proto.ShopOuterClass.Shop;
+import emu.grasscutter.utils.Utils;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
 public class PacketGetShopRsp extends BasePacket {
-
 	public PacketGetShopRsp(Player inv, int shopType) {
 		super(PacketOpcodes.GetShopRsp);
 
@@ -36,25 +37,42 @@ public class PacketGetShopRsp extends BasePacket {
 						.setGoodsItem(ItemParamOuterClass.ItemParam.newBuilder().setItemId(info.getGoodsItem().getId()).setCount(info.getGoodsItem().getCount()).build())
 						.setScoin(info.getScoin())
 						.setHcoin(info.getHcoin())
-						.setBoughtNum(inv.getGoodsLimitNum(info.getGoodsId()))
 						.setBuyLimit(info.getBuyLimit())
 						.setBeginTime(info.getBeginTime())
 						.setEndTime(info.getEndTime())
-						.setNextRefreshTime(info.getNextRefreshTime())
 						.setMinLevel(info.getMinLevel())
 						.setMaxLevel(info.getMaxLevel())
-						.addAllPreGoodsIdList(info.getPreGoodsIdList())
 						.setMcoin(info.getMcoin())
 						.setDisableType(info.getDisableType())
 						.setSecondarySheetId(info.getSecondarySheetId());
 				if (info.getCostItemList() != null) {
 					goods.addAllCostItemList(info.getCostItemList().stream().map(x -> ItemParamOuterClass.ItemParam.newBuilder().setItemId(x.getId()).setCount(x.getCount()).build()).collect(Collectors.toList()));
 				}
+				if (info.getPreGoodsIdList() != null) {
+					goods.addAllPreGoodsIdList(info.getPreGoodsIdList());
+				}
+
+				int currentTs = Utils.getCurrentSeconds();
+				ShopLimit currentShopLimit = inv.getGoodsLimit(info.getGoodsId());
+				int nextRefreshTime = ShopManager.getShopNextRefreshTime(info);
+				if (currentShopLimit != null) {
+					if (currentShopLimit.getNextRefreshTime() < currentTs) { // second game day
+						currentShopLimit.setHasBoughtInPeriod(0);
+						currentShopLimit.setNextRefreshTime(nextRefreshTime);
+					}
+					goods.setBoughtNum(currentShopLimit.getHasBoughtInPeriod());
+					goods.setNextRefreshTime(currentShopLimit.getNextRefreshTime());
+				} else {
+					inv.addShopLimit(goods.getGoodsId(), 0, nextRefreshTime); // save generated refresh time
+					goods.setNextRefreshTime(nextRefreshTime);
+				}
+
 				goodsList.add(goods.build());
 			}
 			shop.addAllGoodsList(goodsList);
 		}
 
+		inv.save();
 		this.setData(GetShopRspOuterClass.GetShopRsp.newBuilder().setShop(shop).build());
 	}
 }

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

+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.entity.GameEntity;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.VehicleInteractTypeOuterClass.VehicleInteractType;
+import emu.grasscutter.net.proto.VehicleInteractRspOuterClass.VehicleInteractRsp;
+import emu.grasscutter.net.proto.VehicleMemberOuterClass.VehicleMember;
+
+public class PacketVehicleInteractRsp extends BasePacket {
+
+	public PacketVehicleInteractRsp(Player player, int entityId, VehicleInteractType interactType) {
+		super(PacketOpcodes.VehicleInteractRsp);
+		VehicleInteractRsp.Builder proto = VehicleInteractRsp.newBuilder();
+
+		GameEntity vehicle = player.getScene().getEntityById(entityId);
+		if(vehicle != null) {
+			proto.setEntityId(vehicle.getId());
+			proto.setInteractType(interactType);
+
+			VehicleMember vehicleMember = VehicleMember.newBuilder()
+					.setUid(player.getUid())
+					.setAvatarGuid(player.getTeamManager().getCurrentCharacterGuid())
+					.build();
+
+			proto.setMember(vehicleMember);
+		}
+		this.setData(proto.build());
+	}
+}

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

+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.entity.EntityVehicle;
+import emu.grasscutter.game.props.FightProperty;
+import emu.grasscutter.game.entity.GameEntity;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.VehicleSpawnRspOuterClass.VehicleSpawnRsp;
+
+import emu.grasscutter.utils.Position;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+
+public class PacketVehicleSpawnRsp extends BasePacket {
+
+	public PacketVehicleSpawnRsp(Player player, int vehicleId, int pointId, Position pos, Position rot) {
+		super(PacketOpcodes.VehicleSpawnRsp);
+		VehicleSpawnRsp.Builder proto = VehicleSpawnRsp.newBuilder();
+
+		EntityVehicle vehicle = new EntityVehicle(player.getScene(), player, vehicleId, pointId, pos, rot);
+
+		switch (vehicleId) {
+			// TODO: Not hardcode this. Waverider (skiff)
+			case 45001001,45001002 -> {
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_BASE_HP, 10000);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_BASE_ATTACK, 100);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_CUR_ATTACK, 100);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_CUR_HP, 10000);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_CUR_DEFENSE, 0);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_CUR_SPEED, 0);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_CHARGE_EFFICIENCY, 0);
+				vehicle.addFightProperty(FightProperty.FIGHT_PROP_MAX_HP, 10000);
+			}
+			default -> {}
+		}
+
+		player.getScene().addEntity(vehicle);
+
+		proto.setVehicleId(vehicleId);
+		proto.setEntityId(vehicle.getId());
+
+		this.setData(proto.build());
+	}
+}

src/main/java/emu/grasscutter/utils/Utils.java

@@ -3,6 +3,8 @@ package emu.grasscutter.utils;
 import java.io.*;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
+import java.time.*;
+import java.time.temporal.TemporalAdjusters;
 import java.util.Random;
 
 import emu.grasscutter.Config;
@@ -191,4 +193,40 @@ public final class Utils {
 
 		if(exit) System.exit(1);
 	}
+
+	public static int GetNextTimestampOfThisHour(int hour, String timeZone, int param) {
+		ZonedDateTime zonedDateTime = ZonedDateTime.now(ZoneId.of(timeZone));
+		for (int i = 0; i < param; i ++){
+			if (zonedDateTime.getHour() < hour) {
+				zonedDateTime = zonedDateTime.withHour(hour).withMinute(0).withSecond(0);
+			} else {
+				zonedDateTime = zonedDateTime.plusDays(1).withHour(hour).withMinute(0).withSecond(0);
+			}
+		}
+		return (int)zonedDateTime.toInstant().atZone(ZoneOffset.UTC).toEpochSecond();
+	}
+
+	public static int GetNextTimestampOfThisHourInNextWeek(int hour, String timeZone, int param) {
+		ZonedDateTime zonedDateTime = ZonedDateTime.now(ZoneId.of(timeZone));
+		for (int i = 0; i < param; i++) {
+			if (zonedDateTime.getDayOfWeek() == DayOfWeek.MONDAY && zonedDateTime.getHour() < hour) {
+				zonedDateTime = ZonedDateTime.now(ZoneId.of(timeZone)).withHour(hour).withMinute(0).withSecond(0);
+			} else {
+				zonedDateTime = zonedDateTime.with(TemporalAdjusters.next(DayOfWeek.MONDAY)).withHour(hour).withMinute(0).withSecond(0);
+			}
+		}
+		return (int)zonedDateTime.toInstant().atZone(ZoneOffset.UTC).toEpochSecond();
+	}
+
+	public static int GetNextTimestampOfThisHourInNextMonth(int hour, String timeZone, int param) {
+		ZonedDateTime zonedDateTime = ZonedDateTime.now(ZoneId.of(timeZone));
+		for (int i = 0; i < param; i++) {
+			if (zonedDateTime.getDayOfMonth() == 1 && zonedDateTime.getHour() < hour) {
+				zonedDateTime = ZonedDateTime.now(ZoneId.of(timeZone)).withHour(hour).withMinute(0).withSecond(0);
+			} else {
+				zonedDateTime = zonedDateTime.with(TemporalAdjusters.firstDayOfNextMonth()).withHour(hour).withMinute(0).withSecond(0);
+			}
+		}
+		return (int)zonedDateTime.toInstant().atZone(ZoneOffset.UTC).toEpochSecond();
+	}
 }