feat: add ability to buy resin with primogems (Grasscutters#2104)

* feat: add ability to buy resin with primogems

* ResinManager#buy returns RetCode value

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

@@ -1,16 +1,22 @@
 package emu.grasscutter.game.managers;
 
-import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
-
+import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.player.BasePlayerManager;
 import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.props.PlayerProperty;
 import emu.grasscutter.game.props.WatcherTriggerType;
-import emu.grasscutter.server.packet.send.PacketPlayerPropNotify;
+import emu.grasscutter.net.proto.RetcodeOuterClass;
+import emu.grasscutter.server.packet.send.PacketItemAddHintNotify;
 import emu.grasscutter.server.packet.send.PacketResinChangeNotify;
 import emu.grasscutter.utils.Utils;
 
+import static emu.grasscutter.config.Configuration.GAME_OPTIONS;
+
 public class ResinManager extends BasePlayerManager {
+    public static final int MAX_RESIN_BUYING_COUNT = 6;
+    public static final int AMOUNT_TO_ADD = 60;
+    public static final int[] HCOIN_NUM_TO_BUY_RESIN = new int[]{50, 100, 100, 150, 200, 200};
 
     public ResinManager(Player player) {
         super(player);
@@ -146,4 +152,22 @@ public synchronized void onPlayerLogin() {
         // Send initial notifications on logon.
         this.player.sendPacket(new PacketResinChangeNotify(this.player));
     }
+
+    public int buy() {
+        if (this.player.getResinBuyCount() >= MAX_RESIN_BUYING_COUNT) {
+            return RetcodeOuterClass.Retcode.RET_RESIN_BOUGHT_COUNT_EXCEEDED_VALUE;
+        }
+
+        var res = this.player.getInventory().payItem(201, HCOIN_NUM_TO_BUY_RESIN[this.player.getResinBuyCount()]);
+        if (!res) {
+            return RetcodeOuterClass.Retcode.RET_HCOIN_NOT_ENOUGH_VALUE;
+        }
+
+        this.player.setResinBuyCount(this.player.getResinBuyCount() + 1);
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_WAIT_SUB_HCOIN, 0);
+        this.addResin(AMOUNT_TO_ADD);
+        this.player.sendPacket(new PacketItemAddHintNotify(new GameItem(106, AMOUNT_TO_ADD), ActionReason.BuyResin));
+
+        return 0;
+    }
 }

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

@@ -28,13 +28,14 @@
 import emu.grasscutter.game.inventory.Inventory;
 import emu.grasscutter.game.mail.Mail;
 import emu.grasscutter.game.mail.MailHandler;
-import emu.grasscutter.game.managers.cooking.ActiveCookCompoundData;
-import emu.grasscutter.game.managers.cooking.CookingCompoundManager;
-import emu.grasscutter.game.managers.cooking.CookingManager;
 import emu.grasscutter.game.managers.FurnitureManager;
 import emu.grasscutter.game.managers.ResinManager;
 import emu.grasscutter.game.managers.SotSManager;
 import emu.grasscutter.game.managers.SatiationManager;
+import emu.grasscutter.game.managers.SotSManager;
+import emu.grasscutter.game.managers.cooking.ActiveCookCompoundData;
+import emu.grasscutter.game.managers.cooking.CookingCompoundManager;
+import emu.grasscutter.game.managers.cooking.CookingManager;
 import emu.grasscutter.game.managers.deforestation.DeforestationManager;
 import emu.grasscutter.game.managers.energy.EnergyManager;
 import emu.grasscutter.game.managers.forging.ActiveForgeData;
@@ -208,6 +209,7 @@ public class Player {
     @Getter @Setter private long springLastUsed;
     private HashMap<String, MapMark> mapMarks;  // Getter makes an empty hashmap - maybe do this elsewhere?
     @Getter @Setter private int nextResinRefresh;
+    @Getter @Setter private int resinBuyCount;
     @Getter @Setter private int lastDailyReset;
     @Getter private transient MpSettingType mpSetting = MpSettingType.MP_SETTING_TYPE_ENTER_AFTER_APPLY;  // TODO
     @Getter private long playerGameTime = 0;
@@ -1295,6 +1297,9 @@ private synchronized void doDailyReset() {
             this.getBattlePassManager().resetWeeklyMissions();
         }
 
+        // Reset resin-buying count.
+        this.setResinBuyCount(0);
+
         // Done. Update last reset time.
         this.setLastDailyReset(currentTime);
     }

src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseAddItem.java

@@ -1,5 +1,6 @@
 package emu.grasscutter.game.props.ItemUseAction;
 
+import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.props.ItemUseOp;
 
 public class ItemUseAddItem extends ItemUseInt {
@@ -19,6 +20,6 @@ public ItemUseAddItem(String[] useParam) {
 
     @Override
     public boolean useItem(UseItemParams params) {
-        return params.player.getInventory().addItem(this.i, this.count * params.count);
+        return params.player.getInventory().addItem(this.i, this.count * params.count, ActionReason.PlayerUseItem);
     }
 }

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

@@ -0,0 +1,16 @@
+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.server.game.GameSession;
+import emu.grasscutter.server.packet.send.PacketBuyResinRsp;
+
+@Opcodes(PacketOpcodes.BuyResinReq)
+public class HandlerBuyResinReq extends PacketHandler {
+    @Override
+    public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
+        var player = session.getPlayer();
+        session.send(new PacketBuyResinRsp(player, player.getResinManager().buy()));
+    }
+}

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

@@ -0,0 +1,18 @@
+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.BuyResinRspOuterClass;
+
+public class PacketBuyResinRsp extends BasePacket {
+    public PacketBuyResinRsp(Player player, int ret) {
+        super(PacketOpcodes.BuyResinRsp);
+
+        this.setData(BuyResinRspOuterClass.BuyResinRsp.newBuilder()
+            .setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
+            .setRetcode(ret)
+            .build());
+    }
+}

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

@@ -7,17 +7,16 @@
 import emu.grasscutter.net.proto.ResinChangeNotifyOuterClass.ResinChangeNotify;
 
 public class PacketResinChangeNotify extends BasePacket {
-	
+
 	public PacketResinChangeNotify(Player player) {
-		super(PacketOpcodes.ResinChangeNotify);
-
-		ResinChangeNotify proto = ResinChangeNotify.newBuilder()
-				.setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
-				.setNextAddTimestamp(player.getNextResinRefresh())
-				.build();
+        super(PacketOpcodes.ResinChangeNotify);
+
+        ResinChangeNotify proto = ResinChangeNotify.newBuilder()
+            .setCurValue(player.getProperty(PlayerProperty.PROP_PLAYER_RESIN))
+            .setNextAddTimestamp(player.getNextResinRefresh())
+            .setCurBuyCount(player.getResinBuyCount())
+            .build();
 
-		// ToDo: Add ability to buy resin with primogems, has to be included here.
-
-		this.setData(proto);
-	}
+        this.setData(proto);
+    }
 }