Move forging stuff to ForgingManager, make client respond to ForgeGetQueueDataReq and actually display forging queues.

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

@@ -0,0 +1,65 @@
+package emu.grasscutter.game.managers.ForgingManager;
+
+import emu.grasscutter.game.inventory.GameItem;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.net.proto.RetcodeOuterClass.Retcode;
+import emu.grasscutter.server.packet.send.PacketForgeDataNotify;
+import emu.grasscutter.server.packet.send.PacketForgeFormulaDataNotify;
+import emu.grasscutter.server.packet.send.PacketForgeGetQueueDataRsp;
+
+public class ForgingManager {
+	private final Player player;
+
+	public ForgingManager(Player player) {
+		this.player = player;
+	}
+
+	/**********
+		Blueprint unlocking.
+	**********/
+	public boolean unlockForgingBlueprint(GameItem blueprintItem) {
+		// Make sure this is actually a forging blueprint.
+		if (!blueprintItem.getItemData().getItemUse().get(0).getUseOp().equals("ITEM_USE_UNLOCK_FORGE")) {
+			return false;
+		}
+
+		// Determine the forging item we should unlock.
+		int forgeId = Integer.parseInt(blueprintItem.getItemData().getItemUse().get(0).getUseParam().get(0));
+
+		// Tell the client that this blueprint is now unlocked and add the unlocked item to the player.
+		this.player.sendPacket(new PacketForgeFormulaDataNotify(forgeId));
+		this.player.getUnlockedForgingBlueprints().add(forgeId);
+
+		// Done.
+		return true;
+	}
+
+	/**********
+		Communicate forging information to the client.
+	**********/
+	private int determineNumberOfQueues() {
+		int adventureRank = player.getLevel();
+		return 
+			(adventureRank >= 15) ? 4 
+			: (adventureRank >= 10) ? 3 
+			: (adventureRank >= 5) ? 2 
+			: 1;	
+	}
+
+	public void sendForgeDataNotify() {
+		// Determine the number of queues and unlocked items.
+		int numQueues = this.determineNumberOfQueues();
+		var unlockedItems = this.player.getUnlockedForgingBlueprints();
+
+		// Send notification.
+		this.player.sendPacket(new PacketForgeDataNotify(unlockedItems, numQueues));
+	}
+	
+	public void handleForgeGetQueueDataReq() {
+		// Determine the number of queues.
+		int numQueues = this.determineNumberOfQueues();
+
+		// Reply.
+		this.player.sendPacket(new PacketForgeGetQueueDataRsp(Retcode.RET_SUCC, numQueues));
+	}
+}

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

@@ -852,15 +852,13 @@ public class InventoryManager {
 
 				// Handle forging blueprints.
 				if (useItem.getItemData().getItemUse().get(0).getUseOp().equals("ITEM_USE_UNLOCK_FORGE")) {
-					// Determine the forging item we should unlock.
-					int forgeId = Integer.parseInt(useItem.getItemData().getItemUse().get(0).getUseParam().get(0));
+					// Unlock.
+					boolean success = player.getForgingManager().unlockForgingBlueprint(useItem);
 
-					// Tell the client that this blueprint is now unlocked and add the unlocked item to the player.
-					player.sendPacket(new PacketForgeFormulaDataNotify(forgeId));
-					player.getUnlockedForgingBlueprints().add(forgeId);
-
-					// Use up the blueprint item.
-					used = 1;
+					// Use up the blueprint item if successful.
+					if (success) {
+						used = 1;
+					}
 				}
 				break;
 			case MATERIAL_CHEST: