Implement Resin (#1257)

* Basic resin usage/refresh.

* Honor resin config, move some logic to logon.

* Add resin usage to DungeonChallenge

* Make fragile and transient resin usable.

* Get resin cost from dungeon excel.

* Add ability to unlock combine diagrams.

* Refactor CombineManager to use Inventory.payItems, enabling crafting of condensed resin.

* Refactor ForgingManager to use Inventory.payItems, to prepare for eventually forging Mystic Enhancement Ores using resin.

* Remove comment

* Check resin usage in addResin

src/main/java/emu/grasscutter/data/excels/DungeonData.java

@@ -16,6 +16,9 @@ public class DungeonData extends GameResource {
 	
 	private RewardPreviewData previewData;
 
+	private int statueCostID;
+	private int statueCostCount;
+	    
 	@Override
 	public int getId() {
 		return this.id;
@@ -33,6 +36,14 @@ public class DungeonData extends GameResource {
 		return previewData;
 	}
 
+	public int getStatueCostID() {
+		return statueCostID;
+	}
+
+	public int getStatueCostCount() {
+		return statueCostCount;
+	}
+
 	@Override
 	public void onLoad() {
 		if (this.passRewardPreviewID > 0) {

src/main/java/emu/grasscutter/game/combine/CombineManger.java

@@ -3,13 +3,17 @@ package emu.grasscutter.game.combine;
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.data.common.ItemParamData;
 import emu.grasscutter.data.excels.CombineData;
+import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.inventory.ItemType;
 import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.net.proto.RetcodeOuterClass;
 import emu.grasscutter.server.game.GameServer;
+import emu.grasscutter.server.packet.send.PacketCombineFormulaDataNotify;
 import emu.grasscutter.server.packet.send.PacketCombineRsp;
 import it.unimi.dsi.fastutil.Pair;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class CombineManger {
@@ -23,6 +27,27 @@ public class CombineManger {
         this.gameServer = gameServer;
     }
 
+    public boolean unlockCombineDiagram(Player player, GameItem diagramItem) {
+		// Make sure this is actually a diagram.
+		if (!diagramItem.getItemData().getItemUse().get(0).getUseOp().equals("ITEM_USE_UNLOCK_COMBINE")) {
+			return false;
+		}
+
+		// Determine the combine item we should unlock.
+		int combineId = Integer.parseInt(diagramItem.getItemData().getItemUse().get(0).getUseParam().get(0));
+
+		// Remove the diagram from the player's inventory.
+		// We need to do this here, before sending CombineFormulaDataNotify, or the the combine UI won't correctly
+		// update when unlocking the diagram.
+		player.getInventory().removeItem(diagramItem, 1);
+
+		// Tell the client that this diagram is now unlocked and add the unlocked item to the player.
+		player.getUnlockedCombines().add(combineId);
+		player.sendPacket(new PacketCombineFormulaDataNotify(combineId));
+
+		return true;
+	}
+
     public CombineResult combineItem(Player player, int cid, int count){
         // check config exist
         if(!GameData.getCombineDataMap().containsKey(cid)){
@@ -35,36 +60,17 @@ public class CombineManger {
         if(combineData.getPlayerLevel() > player.getLevel()){
             return null;
         }
-        // check enough
-        var enough = combineData.getMaterialItems().stream()
-                .filter(item -> player.getInventory()
-                        .getInventoryTab(ItemType.ITEM_MATERIAL)
-                        .getItemById(item.getId())
-                        .getCount() < item.getCount() * count
-                )
-                .findAny()
-                .isEmpty();
-
-        // if not enough
-        if(!enough){
-            player.getWorld().getHost().sendPacket(
-                    new PacketCombineRsp(RetcodeOuterClass.Retcode.RET_ITEM_COMBINE_COUNT_NOT_ENOUGH_VALUE)
-            );
-            return null;
-        }
-        if (player.getMora() >= combineData.getScoinCost()) {
-            player.setMora(player.getMora() - combineData.getScoinCost() * count);
-        } else {
-            return null;
+
+        // consume items
+        List<ItemParamData> material = new ArrayList<>(combineData.getMaterialItems());
+        material.add(new ItemParamData(202, combineData.getScoinCost()));
+
+        boolean success = player.getInventory().payItems(material.toArray(new ItemParamData[0]), count, ActionReason.Combine);
+
+        // abort if not enough material
+        if (!success) {
+            player.sendPacket(new PacketCombineRsp(RetcodeOuterClass.Retcode.RET_ITEM_COMBINE_COUNT_NOT_ENOUGH_VALUE));
         }
-        // try to remove materials
-        combineData.getMaterialItems().stream()
-                .map(item -> Pair.of(player.getInventory()
-                                .getInventoryTab(ItemType.ITEM_MATERIAL)
-                                .getItemById(item.getId())
-                        ,item.getCount() * count)
-                )
-                .forEach(item -> player.getInventory().removeItem(item.first(), item.second()));
 
         // make the result
         player.getInventory().addItem(combineData.getResultItemId(),

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

@@ -4,9 +4,11 @@ import emu.grasscutter.data.common.ItemParamData;
 import emu.grasscutter.data.excels.DungeonData;
 import emu.grasscutter.game.entity.EntityMonster;
 import emu.grasscutter.game.inventory.GameItem;
+import emu.grasscutter.game.inventory.ItemType;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.game.world.Scene;
+import emu.grasscutter.net.proto.GadgetInteractReqOuterClass.GadgetInteractReq;
 import emu.grasscutter.scripts.constants.EventType;
 import emu.grasscutter.scripts.data.SceneGroup;
 import emu.grasscutter.scripts.data.ScriptArgs;
@@ -153,8 +155,20 @@ public class DungeonChallenge {
 		}
 	}
 	
-	public void getStatueDrops(Player player) {
+	private List<GameItem> rollRewards() {
+		List<GameItem> rewards = new ArrayList<>();
+
+		for (ItemParamData param : getScene().getDungeonData().getRewardPreview().getPreviewItems()) {
+			rewards.add(new GameItem(param.getId(), Math.max(param.getCount(), 1)));
+		}
+
+		return rewards;
+	}
+
+	public void getStatueDrops(Player player, GadgetInteractReq request) {
 		DungeonData dungeonData = getScene().getDungeonData();
+		int resinCost = dungeonData.getStatueCostCount() != 0 ? dungeonData.getStatueCostCount() : 20;
+
 		if (!isSuccess() || dungeonData == null || dungeonData.getRewardPreview() == null || dungeonData.getRewardPreview().getPreviewItems().length == 0) {
 			return;
 		}
@@ -164,11 +178,43 @@ public class DungeonChallenge {
 			return;
 		}
 		
+		// Get rewards.
 		List<GameItem> rewards = new ArrayList<>();
-		for (ItemParamData param : getScene().getDungeonData().getRewardPreview().getPreviewItems()) {
-			rewards.add(new GameItem(param.getId(), Math.max(param.getCount(), 1)));
+
+		if (request.getIsUseCondenseResin()) {
+			// Check if condensed resin is usable here.
+			// For this, we use the following logic for now:
+			// The normal resin cost of the dungeon has to be 20.
+			if (resinCost != 20) {
+				return;
+			}
+
+			// Make sure the player has condensed resin.
+			GameItem condensedResin = player.getInventory().getInventoryTab(ItemType.ITEM_MATERIAL).getItemById(220007);
+			if (condensedResin == null || condensedResin.getCount() <= 0) {
+				return;
+			}
+
+			// Deduct.
+			player.getInventory().removeItem(condensedResin, 1);
+
+			// Roll rewards, twice (because condensed).
+			rewards.addAll(this.rollRewards());
+			rewards.addAll(this.rollRewards());
+		}
+		else {
+			// If the player used regular resin, try to deduct.
+			// Stop if insufficient resin.
+			boolean success = player.getResinManager().useResin(resinCost);
+			if (!success) {
+				return;
+			}
+
+			// Roll rewards.
+			rewards.addAll(this.rollRewards());
 		}
 		
+		// Add rewards to player and send notification.
 		player.getInventory().addItems(rewards, ActionReason.DungeonStatueDrop);
 		player.sendPacket(new PacketGadgetAutoPickDropInfoNotify(rewards));
 		

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

@@ -17,6 +17,7 @@ import emu.grasscutter.game.avatar.AvatarStorage;
 import emu.grasscutter.game.avatar.Avatar;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.game.props.ActionReason;
+import emu.grasscutter.game.props.PlayerProperty;
 import emu.grasscutter.net.proto.ItemParamOuterClass.ItemParam;
 import emu.grasscutter.server.packet.send.PacketAvatarEquipChangeNotify;
 import emu.grasscutter.server.packet.send.PacketItemAddHintNotify;
@@ -258,6 +259,8 @@ public class Inventory implements Iterable<GameItem> {
 					getPlayer().addExpDirectly(count);
 			case 105 -> // Companionship exp
 					getPlayer().getServer().getInventoryManager().upgradeAvatarFetterLevel(player, getPlayer().getTeamManager().getCurrentAvatarEntity().getAvatar(), count);
+			case 106 -> // Resin
+					getPlayer().getResinManager().addResin(count);
 			case 201 -> // Primogem
 					getPlayer().setPrimogems(player.getPrimogems() + count);
 			case 202 -> // Mora
@@ -275,6 +278,8 @@ public class Inventory implements Iterable<GameItem> {
 				return player.getMora();
 			case 203:  // Genesis Crystals
 				return player.getCrystals();
+			case 106:  // Resin
+				return player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
 			default:
 				GameItem item = getInventoryTab(ItemType.ITEM_MATERIAL).getItemById(itemId);  // What if we ever want to operate on weapons/relics/furniture? :S
 				return (item == null) ? 0 : item.getCount();
@@ -313,6 +318,8 @@ public class Inventory implements Iterable<GameItem> {
 					player.setMora(player.getMora() - (cost.getCount() * quantity));
 				case 203 ->  // Genesis Crystals
 					player.setCrystals(player.getCrystals() - (cost.getCount() * quantity));
+				case 106 ->  // Resin
+					player.getResinManager().useResin(cost.getCount() * quantity);
 				default ->
 					removeItem(getInventoryTab(ItemType.ITEM_MATERIAL).getItemById(cost.getId()), cost.getCount() * quantity);
 			}

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

@@ -15,6 +15,7 @@ import emu.grasscutter.data.excels.ItemData;
 import emu.grasscutter.game.inventory.GameItem;
 import emu.grasscutter.game.inventory.ItemType;
 import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.ActionReason;
 import emu.grasscutter.net.proto.ForgeStartReqOuterClass;
 import emu.grasscutter.net.proto.ForgeQueueDataOuterClass.ForgeQueueData;
 import emu.grasscutter.net.proto.ForgeQueueManipulateReqOuterClass.ForgeQueueManipulateReq;
@@ -147,38 +148,16 @@ public class ForgingManager {
 
 		ForgeData forgeData = GameData.getForgeDataMap().get(req.getForgeId());
 		
-		// Check if we have enough of each material.
-		for (var material : forgeData.getMaterialItems()) {
-			if (material.getItemId() == 0) {
-				continue;
-			}
-
-			int currentCount = this.player.getInventory().getInventoryTab(ItemType.ITEM_MATERIAL).getItemById(material.getItemId()).getCount();
+		// Check if we have enough of each material and consume.
+		List<ItemParamData> material = new ArrayList<>(forgeData.getMaterialItems());
+		material.add(new ItemParamData(202, forgeData.getScoinCost()));
 
-			if (currentCount < material.getCount() * req.getForgeCount()) {
-				this.player.sendPacket(new PacketForgeStartRsp(Retcode.RET_FORGE_POINT_NOT_ENOUGH)); //ToDo: Probably the wrong return code.
-				return;
-			}
-		}
+		boolean success = player.getInventory().payItems(material.toArray(new ItemParamData[0]), req.getForgeCount(), ActionReason.ForgeCost);
 
-		// Check if we have enough Mora.
-		if (this.player.getMora() < forgeData.getScoinCost() * req.getForgeCount()) {
+		if (!success) {
 			this.player.sendPacket(new PacketForgeStartRsp(Retcode.RET_FORGE_POINT_NOT_ENOUGH)); //ToDo: Probably the wrong return code.
-			return;
-		}
-
-		// Consume material and Mora.
-		for (var material : forgeData.getMaterialItems()) {
-			if (material.getItemId() == 0) {
-				continue;
-			}
-
-			GameItem item = this.player.getInventory().getInventoryTab(ItemType.ITEM_MATERIAL).getItemById(material.getItemId());
-			this.player.getInventory().removeItem(item, material.getCount() * req.getForgeCount());
 		}
 
-		this.player.setMora(this.player.getMora() - forgeData.getScoinCost() * req.getForgeCount());
-
 		// Create and add active forge.
 		ActiveForgeData activeForge = new ActiveForgeData();
 		activeForge.setForgeId(req.getForgeId());

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

@@ -856,6 +856,27 @@ public class InventoryManager {
 					// Unlock.
 					useSuccess = player.getForgingManager().unlockForgingBlueprint(useItem);
 				}
+				// Handle combine diagrams.
+				if (useItem.getItemData().getItemUse().get(0).getUseOp().equals("ITEM_USE_UNLOCK_COMBINE")) {
+					// Unlock.
+					useSuccess = player.getServer().getCombineManger().unlockCombineDiagram(player, useItem);
+				}
+				break;
+			case MATERIAL_CONSUME_BATCH_USE:
+				// Make sure we have usage data for this material.
+				if (useItem.getItemData().getItemUse() == null) {
+					break;
+				}
+
+				// Handle fragile/transient resin.
+				if (useItem.getItemId() == 107009 || useItem.getItemId() == 107012){				
+					// Add resin to the inventory.
+					ItemData resinItemData = GameData.getItemDataMap().get(106);
+					player.getInventory().addItem(new GameItem(resinItemData, 60 * count), ActionReason.PlayerUseItem);
+
+					// Set used amount.
+					used = count;
+				}
 				break;
 			case MATERIAL_CHEST:
 				List<ShopChestTable> shopChestTableList = player.getServer().getShopManager().getShopChestData();

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

+package emu.grasscutter.game.managers;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.game.props.PlayerProperty;
+import emu.grasscutter.server.packet.send.PacketPlayerPropNotify;
+import emu.grasscutter.server.packet.send.PacketResinChangeNotify;
+import emu.grasscutter.utils.Utils;
+
+import static emu.grasscutter.Configuration.GAME_OPTIONS;
+
+public class ResinManager {
+    private final Player player;
+
+    public ResinManager(Player player) {
+        this.player = player;
+    }
+
+    /********************
+     * Change resin.
+     ********************/
+    public synchronized boolean useResin(int amount) {
+        // Check if resin enabled.
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+            return true;
+        }
+
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+        
+        // Check if the player has sufficient resin.
+        if (currentResin < amount) {
+            return false;
+        }
+
+        // Deduct the resin from the player.
+        int newResin = currentResin - amount;
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+
+        // Check if this has taken the player under the recharge cap,
+        // starting the recharging process.
+        if (this.player.getNextResinRefresh() == 0 && newResin < GAME_OPTIONS.resinOptions.cap) {
+		    int currentTime = Utils.getCurrentSeconds();
+            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
+        }
+
+        // Send packets.
+        this.player.sendPacket(new PacketPlayerPropNotify(this.player, PlayerProperty.PROP_PLAYER_RESIN));
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+
+        return true;
+    }
+
+    public synchronized void addResin(int amount) {
+        // Check if resin enabled.
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+            return;
+        }
+
+        // Add resin.
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+        int newResin = currentResin + amount;
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+
+        // Stop recharging if player is now at or over the cap.
+        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
+            this.player.setNextResinRefresh(0);
+        }
+
+        // Send packets.
+        this.player.sendPacket(new PacketPlayerPropNotify(this.player, PlayerProperty.PROP_PLAYER_RESIN));
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+    }
+
+    /********************
+     * Recharge resin.
+     ********************/
+    public synchronized void rechargeResin() {
+        // Check if resin enabled.
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+            return;
+        }
+
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+        int currentTime = Utils.getCurrentSeconds();
+
+        // Make sure we are currently in "recharging mode".
+        // This is denoted by Player.nextResinRefresh being greater than 0.
+        if (this.player.getNextResinRefresh() <= 0) {
+            return;
+        }
+
+        // Determine if we actually need to recharge yet.
+        if (currentTime < this.player.getNextResinRefresh()) {
+            return;
+        }
+
+        // Calculate how much resin we need to refill and update player.
+        // Note that this can be more than one in case the player
+        // logged off with uncapped resin and is now logging in again.
+        int recharge = 1 + (int)((currentTime - this.player.getNextResinRefresh()) / GAME_OPTIONS.resinOptions.rechargeTime);
+        int newResin = Math.min(GAME_OPTIONS.resinOptions.cap, currentResin + recharge);
+        int resinChange = newResin - currentResin;
+
+        this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, newResin);
+
+        // Calculate next recharge time.
+        // Set to zero to disable recharge (because on/over cap.)
+        if (newResin >= GAME_OPTIONS.resinOptions.cap) {
+            this.player.setNextResinRefresh(0);
+        }
+        else {
+            int nextRecharge = this.player.getNextResinRefresh() + resinChange * GAME_OPTIONS.resinOptions.rechargeTime;
+            this.player.setNextResinRefresh(nextRecharge);
+        }
+
+        // Send packets.
+        this.player.sendPacket(new PacketPlayerPropNotify(this.player, PlayerProperty.PROP_PLAYER_RESIN));
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+    }
+
+    /********************
+     * Player login.
+     ********************/
+    public synchronized void onPlayerLogin() {
+		// If resin usage is disabled, set resin to cap.
+        if (!GAME_OPTIONS.resinOptions.resinUsage) {
+            this.player.setProperty(PlayerProperty.PROP_PLAYER_RESIN, GAME_OPTIONS.resinOptions.cap);
+            this.player.setNextResinRefresh(0);
+        }
+
+        // In case server administrators change the resin cap while players are capped,
+        // we need to restart recharging here.
+        int currentResin = this.player.getProperty(PlayerProperty.PROP_PLAYER_RESIN);
+        int currentTime = Utils.getCurrentSeconds();
+        
+        if (currentResin < GAME_OPTIONS.resinOptions.cap && this.player.getNextResinRefresh() == 0) {
+            this.player.setNextResinRefresh(currentTime + GAME_OPTIONS.resinOptions.rechargeTime);
+        }
+
+        // Send initial notifications on logon.
+        this.player.sendPacket(new PacketPlayerPropNotify(this.player, PlayerProperty.PROP_PLAYER_RESIN));
+        this.player.sendPacket(new PacketResinChangeNotify(this.player));
+    }
+}

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

@@ -27,6 +27,7 @@ import emu.grasscutter.game.inventory.Inventory;
 import emu.grasscutter.game.mail.Mail;
 import emu.grasscutter.game.mail.MailHandler;
 import emu.grasscutter.game.managers.InsectCaptureManager;
+import emu.grasscutter.game.managers.ResinManager;
 import emu.grasscutter.game.managers.StaminaManager.StaminaManager;
 import emu.grasscutter.game.managers.SotSManager;
 import emu.grasscutter.game.managers.EnergyManager.EnergyManager;
@@ -48,6 +49,7 @@ import emu.grasscutter.net.proto.*;
 import emu.grasscutter.net.proto.AbilityInvokeEntryOuterClass.AbilityInvokeEntry;
 import emu.grasscutter.net.proto.AttackResultOuterClass.AttackResult;
 import emu.grasscutter.net.proto.CombatInvokeEntryOuterClass.CombatInvokeEntry;
+import emu.grasscutter.net.proto.GadgetInteractReqOuterClass.GadgetInteractReq;
 import emu.grasscutter.net.proto.InteractTypeOuterClass.InteractType;
 import emu.grasscutter.net.proto.MpSettingTypeOuterClass.MpSettingType;
 import emu.grasscutter.net.proto.OnlinePlayerInfoOuterClass.OnlinePlayerInfo;
@@ -94,6 +96,7 @@ public class Player {
 	private Set<Integer> flyCloakList;
 	private Set<Integer> costumeList;
 	private Set<Integer> unlockedForgingBlueprints;
+	private Set<Integer> unlockedCombines;
 	private List<ActiveForgeData> activeForges;
 
 	private Integer widgetId;
@@ -158,11 +161,13 @@ public class Player {
 	@Transient private MapMarksManager mapMarksManager;
 	@Transient private StaminaManager staminaManager;
 	@Transient private EnergyManager energyManager;
+	@Transient private ResinManager resinManager;
 	@Transient private ForgingManager forgingManager;
 	@Transient private DeforestationManager deforestationManager;
 
 	private long springLastUsed;
 	private HashMap<String, MapMark> mapMarks;
+	private int nextResinRefresh;
 
 	@Deprecated
 	@SuppressWarnings({"rawtypes", "unchecked"}) // Morphia only!
@@ -193,6 +198,7 @@ public class Player {
 		this.costumeList = new HashSet<>();
 		this.towerData = new TowerData();
 		this.unlockedForgingBlueprints = new HashSet<>();
+		this.unlockedCombines = new HashSet<>();
 		this.activeForges = new ArrayList<>();
 
 		this.setSceneId(3);
@@ -217,6 +223,7 @@ public class Player {
 		this.staminaManager = new StaminaManager(this);
 		this.sotsManager = new SotSManager(this);
 		this.energyManager = new EnergyManager(this);
+		this.resinManager = new ResinManager(this);
 		this.forgingManager = new ForgingManager(this);
 	}
 
@@ -248,6 +255,7 @@ public class Player {
 		this.staminaManager = new StaminaManager(this);
 		this.sotsManager = new SotSManager(this);
 		this.energyManager = new EnergyManager(this);
+		this.resinManager = new ResinManager(this);
 		this.deforestationManager = new DeforestationManager(this);
 		this.forgingManager = new ForgingManager(this);
 	}
@@ -540,6 +548,10 @@ public class Player {
 		return this.unlockedForgingBlueprints;
 	}
 
+	public Set<Integer> getUnlockedCombines() {
+		return this.unlockedCombines;
+	}
+
 	public List<ActiveForgeData> getActiveForges() {
 		return this.activeForges;
 	}
@@ -648,6 +660,14 @@ public class Player {
 		springLastUsed = val;
 	}
 
+	public int getNextResinRefresh() {
+		return nextResinRefresh;
+	}
+
+	public void setNextResinRefresh(int value) {
+		this.nextResinRefresh = value;
+	}
+
 	public SceneLoadState getSceneLoadState() {
 		return sceneState;
 	}
@@ -940,7 +960,7 @@ public class Player {
 		return this.getMailHandler().replaceMailByIndex(index, message);
 	}
 	
-	public void interactWith(int gadgetEntityId) {
+	public void interactWith(int gadgetEntityId, GadgetInteractReq request) {
 		GameEntity entity = getScene().getEntityById(gadgetEntityId);
 		if (entity == null) {
 			return;
@@ -970,7 +990,7 @@ public class Player {
 		} else if (entity instanceof EntityGadget gadget) {
 			if (gadget.getGadgetData().getType() == EntityType.RewardStatue) {
 				if (scene.getChallenge() != null) {
-					scene.getChallenge().getStatueDrops(this);
+					scene.getChallenge().getStatueDrops(this, request);
 				}
 				this.sendPacket(new PacketGadgetInteractRsp(gadget, InteractType.INTERACT_TYPE_OPEN_STATUE));
 			}
@@ -1142,6 +1162,10 @@ public class Player {
 		return this.energyManager;
 	}
 
+	public ResinManager getResinManager() {
+		return this.resinManager;
+	}
+
 	public ForgingManager getForgingManager() {
 		return this.forgingManager;
 	}
@@ -1208,6 +1232,9 @@ public class Player {
 
 		// Send updated forge queue data, if necessary.
 		this.getForgingManager().sendPlayerForgingUpdate();
+
+		// Recharge resin.
+		this.getResinManager().rechargeResin();
 	}
 
 
@@ -1291,7 +1318,9 @@ public class Player {
 		session.send(new PacketWidgetGadgetAllDataNotify());
 		session.send(new PacketPlayerHomeCompInfoNotify(this));
 		session.send(new PacketHomeComfortInfoNotify(this));
+		session.send(new PacketCombineDataNotify(this.unlockedCombines));
 		this.forgingManager.sendForgeDataNotify();
+		this.resinManager.onPlayerLogin();
 
 		getTodayMoonCard(); // The timer works at 0:0, some users log in after that, use this method to check if they have received a reward today or not. If not, send the reward.
 

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

@@ -13,7 +13,7 @@ public class HandlerGadgetInteractReq extends PacketHandler {
 	public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
 		GadgetInteractReq req = GadgetInteractReq.parseFrom(payload);
 		
-		session.getPlayer().interactWith(req.getGadgetEntityId());
+		session.getPlayer().interactWith(req.getGadgetEntityId(), req);
 	}
 
 }

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

+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.CombineDataNotifyOuterClass.CombineDataNotify;
+
+public class PacketCombineDataNotify extends BasePacket {
+	
+	public PacketCombineDataNotify(Iterable<Integer> unlockedCombines) {
+		super(PacketOpcodes.CombineDataNotify);
+		
+		CombineDataNotify proto = CombineDataNotify.newBuilder()
+				.addAllCombineIdList(unlockedCombines)
+				.build();
+		
+		this.setData(proto);
+	}
+}

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

+package emu.grasscutter.server.packet.send;
+
+import emu.grasscutter.net.packet.BasePacket;
+import emu.grasscutter.net.packet.PacketOpcodes;
+import emu.grasscutter.net.proto.CombineFormulaDataNotifyOuterClass.CombineFormulaDataNotify;
+
+public class PacketCombineFormulaDataNotify extends BasePacket {
+	
+	public PacketCombineFormulaDataNotify(int combineId) {
+		super(PacketOpcodes.CombineFormulaDataNotify);
+		
+		CombineFormulaDataNotify proto = CombineFormulaDataNotify.newBuilder()
+				.setCombineId(combineId)
+				.setIsLocked(false)
+				.build();
+		
+		this.setData(proto);
+	}
+}

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

+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.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();
+
+		// ToDo: Add ability to buy resin with primogems, has to be included here.
+		
+		this.setData(proto);
+	}
+}

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

@@ -177,6 +177,7 @@ public class ConfigContainer {
         public boolean enableShopItems = true;
         public boolean staminaUsage = true;
         public boolean energyUsage = false;
+        public ResinOptions resinOptions = new ResinOptions();
         public Rates rates = new Rates();
 
         public static class InventoryLimits {
@@ -197,6 +198,12 @@ public class ConfigContainer {
             public float mora = 1.0f;
             public float leyLines = 1.0f;
         }
+
+        public static class ResinOptions {
+            public boolean resinUsage = false;
+            public int cap = 160;
+            public int rechargeTime = 480;
+        }
     }
 
     public static class JoinOptions {