Implement character talents

src/main/java/emu/nebula/server/handlers/HandlerTalentGroupUnlockReq.java

@@ -0,0 +1,52 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.Public.UI32;
+import emu.nebula.proto.TalentGroupUnlock.TalentGroupUnlockResp;
+import it.unimi.dsi.fastutil.ints.IntArrayList;
+import emu.nebula.net.HandlerId;
+import emu.nebula.data.GameData;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.talent_group_unlock_req)
+public class HandlerTalentGroupUnlockReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = UI32.parseFrom(message);
+        
+        // Get talent group data
+        var talentGroup = GameData.getTalentGroupDataTable().get(req.getValue());
+        if (talentGroup == null) {
+            return session.encodeMsg(NetMsgId.talent_group_unlock_failed_ack);
+        }
+        
+        // Get character
+        var character = session.getPlayer().getCharacters().getCharacterById(talentGroup.getCharId());
+        if (character == null) {
+            return session.encodeMsg(NetMsgId.talent_group_unlock_failed_ack);
+        }
+        
+        // Unlock talent
+        var changes = character.unlockTalent(talentGroup);
+        
+        if (changes == null) {
+            return session.encodeMsg(NetMsgId.talent_group_unlock_failed_ack);
+        }
+        
+        // Build response
+        var rsp = TalentGroupUnlockResp.newInstance()
+                .setChange(changes.toProto());
+        
+        if (changes.getExtraData() != null) {
+            var nodes = (IntArrayList) changes.getExtraData();
+            nodes.forEach(rsp::addNodes);
+        }
+        
+        // Encode response
+        return session.encodeMsg(NetMsgId.talent_group_unlock_succeed_ack, rsp);
+    }
+
+}