implement npc shop

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

@@ -109,6 +109,16 @@ public class Inventory implements Iterable<GameItem> {
 		
 		return result;
 	}
+
+	public boolean addItem(GameItem item, ActionReason reason, boolean forceNotify) {
+		boolean result = addItem(item);
+
+		if (reason != null && (forceNotify || result)) {
+			getPlayer().sendPacket(new PacketItemAddHintNotify(item, reason));
+		}
+
+		return result;
+	}
 	
 	public void addItems(Collection<GameItem> items) {
 		this.addItems(items, null);

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

@@ -25,6 +25,7 @@ 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.ShopLimit;
 import emu.grasscutter.game.world.Scene;
 import emu.grasscutter.game.world.World;
 import emu.grasscutter.net.packet.BasePacket;
@@ -84,6 +85,7 @@ public class Player {
 	private ArrayList<AvatarProfileData> shownAvatars;
 	private Set<Integer> rewardedLevels;
 	private ArrayList<Mail> mail;
+	private ArrayList<ShopLimit> shopLimit;
 
 	private int sceneId;
 	private int regionId;
@@ -141,6 +143,8 @@ public class Player {
 		this.birthday = new PlayerBirthday();
 		this.rewardedLevels = new HashSet<>();
 		this.moonCardGetTimes = new HashSet<>();
+
+		this.shopLimit = new ArrayList<>();
 	}
 
 	// On player creation
@@ -592,6 +596,35 @@ public class Player {
 		session.send(new PacketCardProductRewardNotify(getMoonCardRemainDays()));
 	}
 
+	public List<ShopLimit> getShopLimit() {
+		return shopLimit;
+	}
+
+	public int getGoodsLimitNum(int goodsId) {
+		for (ShopLimit sl : getShopLimit()) {
+			if (sl.getShopGoodId() == goodsId)
+				return sl.getHasBought();
+		}
+		return 0;
+	}
+
+	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) {
+			ShopLimit sl = new ShopLimit();
+			sl.setShopGoodId(goodsId);
+			sl.setHasBought(boughtCount);
+			shopLimit.add(sl);
+		}
+		this.save();
+	}
+
 	public boolean inGodmode() {
 		return godmode;
 	}

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

@@ -1,5 +1,162 @@
 package emu.grasscutter.game.shop;
 
-public class ShopInfo {
+import emu.grasscutter.data.common.ItemParamData;
 
+import java.util.ArrayList;
+import java.util.List;
+
+public class ShopInfo {
+    public int shopId = 1004;
+    public int goodsId = 0;
+    public ItemParamData goodsItem;
+    public int scoin = 0;
+    public List<ItemParamData> costItemList;
+    public int boughtNum = 0;
+    public int buyLimit = 0;
+    public int beginTime = 0;
+    public int endTime = 1924992000;
+    public int nextRefreshTime = 1924992000;
+    public int minLevel = 0;
+    public int maxLevel = 61;
+    public List<Integer> preGoodsIdList = new ArrayList<>();
+    public int mcoin = 0;
+    public int hcoin = 0;
+    public int disableType = 0;
+    public int secondarySheetId = 0;
+
+    public int getHcoin() {
+        return hcoin;
+    }
+
+    public void setHcoin(int hcoin) {
+        this.hcoin = hcoin;
+    }
+
+    public List<Integer> getPreGoodsIdList() {
+        return preGoodsIdList;
+    }
+
+    public void setPreGoodsIdList(List<Integer> preGoodsIdList) {
+        this.preGoodsIdList = preGoodsIdList;
+    }
+
+    public int getMcoin() {
+        return mcoin;
+    }
+
+    public void setMcoin(int mcoin) {
+        this.mcoin = mcoin;
+    }
+
+    public int getDisableType() {
+        return disableType;
+    }
+
+    public void setDisableType(int disableType) {
+        this.disableType = disableType;
+    }
+
+    public int getSecondarySheetId() {
+        return secondarySheetId;
+    }
+
+    public void setSecondarySheetId(int secondarySheetId) {
+        this.secondarySheetId = secondarySheetId;
+    }
+
+    public int getShopId() {
+        return shopId;
+    }
+
+    public void setShopId(int shopId) {
+        this.shopId = shopId;
+    }
+
+    public int getGoodsId() {
+        return goodsId;
+    }
+
+    public void setGoodsId(int goodsId) {
+        this.goodsId = goodsId;
+    }
+
+    public ItemParamData getGoodsItem() {
+        return goodsItem;
+    }
+
+    public void setGoodsItem(ItemParamData goodsItem) {
+        this.goodsItem = goodsItem;
+    }
+
+    public int getScoin() {
+        return scoin;
+    }
+
+    public void setScoin(int scoin) {
+        this.scoin = scoin;
+    }
+
+    public List<ItemParamData> getCostItemList() {
+        return costItemList;
+    }
+
+    public void setCostItemList(List<ItemParamData> costItemList) {
+        this.costItemList = costItemList;
+    }
+
+    public int getBoughtNum() {
+        return boughtNum;
+    }
+
+    public void setBoughtNum(int boughtNum) {
+        this.boughtNum = boughtNum;
+    }
+
+    public int getBuyLimit() {
+        return buyLimit;
+    }
+
+    public void setBuyLimit(int buyLimit) {
+        this.buyLimit = buyLimit;
+    }
+
+    public int getBeginTime() {
+        return beginTime;
+    }
+
+    public void setBeginTime(int beginTime) {
+        this.beginTime = beginTime;
+    }
+
+    public int getEndTime() {
+        return endTime;
+    }
+
+    public void setEndTime(int endTime) {
+        this.endTime = endTime;
+    }
+
+    public int getNextRefreshTime() {
+        return nextRefreshTime;
+    }
+
+    public void setNextRefreshTime(int nextRefreshTime) {
+        this.nextRefreshTime = nextRefreshTime;
+    }
+
+    public int getMinLevel() {
+        return minLevel;
+    }
+
+    public void setMinLevel(int minLevel) {
+        this.minLevel = minLevel;
+    }
+
+    public int getMaxLevel() {
+        return maxLevel;
+    }
+
+    public void setMaxLevel(int maxLevel) {
+        this.maxLevel = maxLevel;
+    }
 }

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

@@ -0,0 +1,25 @@
+package emu.grasscutter.game.shop;
+
+import dev.morphia.annotations.Entity;
+
+@Entity
+public class ShopLimit {
+    public int getShopGoodId() {
+        return shopGoodId;
+    }
+
+    public void setShopGoodId(int shopGoodId) {
+        this.shopGoodId = shopGoodId;
+    }
+
+    public int getHasBought() {
+        return hasBought;
+    }
+
+    public void setHasBought(int hasBought) {
+        this.hasBought = hasBought;
+    }
+
+    private int shopGoodId;
+    private int hasBought;
+}

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

@@ -1,12 +1,50 @@
 package emu.grasscutter.game.shop;
 
+import com.google.gson.reflect.TypeToken;
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.server.game.GameServer;
+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.List;
 
 public class ShopManager {
 	private final GameServer server;
+
+	public Int2ObjectMap<List<ShopInfo>> getShopData() {
+		return shopData;
+	}
+
+	private final Int2ObjectMap<List<ShopInfo>> shopData;
 	
 	public ShopManager(GameServer server) {
 		this.server = server;
+		this.shopData = new Int2ObjectOpenHashMap<>();
+		this.load();
+	}
+
+	public synchronized void load() {
+		try (FileReader fileReader = new FileReader(Grasscutter.getConfig().DATA_FOLDER + "Shop.json")) {
+			getShopData().clear();
+			List<ShopInfo> banners = Grasscutter.getGsonFactory().fromJson(fileReader, TypeToken.getParameterized(Collection.class, ShopInfo.class).getType());
+			if(banners.size() > 0) {
+				for (ShopInfo shopInfo : banners) {
+					if (!getShopData().containsKey(shopInfo.getShopId()))
+						getShopData().put(shopInfo.getShopId(), new ArrayList<>());
+					getShopData().get(shopInfo.getShopId()).add(shopInfo);
+					Grasscutter.getLogger().info(String.format("Shop add: id [%d], data [%d*%d]", shopInfo.getShopId(), shopInfo.getGoodsItem().getId(), shopInfo.getGoodsItem().getCount()));
+				}
+				Grasscutter.getLogger().info("Shop data successfully loaded.");
+			} else {
+				Grasscutter.getLogger().error("Unable to load shop data. Shop data size is 0.");
+			}
+		} catch (Exception e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
 	}
 
 	public GameServer getServer() {