Implement character emblem locking/reforging

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

@@ -0,0 +1,35 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.CharGemReplaceAttribute.CharGemReplaceAttributeReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.char_gem_replace_attribute_req)
+public class HandlerCharGemReplaceAttributeReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = CharGemReplaceAttributeReq.parseFrom(message);
+        
+        // Get character
+        var character = session.getPlayer().getCharacters().getCharacterById(req.getCharId());
+        
+        if (character == null) {
+            return session.encodeMsg(NetMsgId.char_gem_replace_attribute_failed_ack);
+        }
+        
+        // Replace attributes
+        boolean success = character.replaceGemAttributes(req.getSlotId(), req.getGemIndex());
+        
+        if (success == false) {
+            return session.encodeMsg(NetMsgId.char_gem_replace_attribute_failed_ack);
+        }
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.char_gem_replace_attribute_succeed_ack);
+    }
+
+}