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GameServer/Contents/State/PacketHandler/ChangeStatePacketHandler.cs

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+using Google.Protobuf;
+using Google.Protobuf.WellKnownTypes;
+
+
+using ServerCore;
+using ServerBase;
+using ServerCommon;
+using ServerCommon.BusinessLogDomain;
+using MetaAssets;
+
+
+namespace GameServer.PacketHandler;
+
+[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.ChangeStateReq), typeof(ChangeStatePacketHandler), typeof(GameLoginListener))]
+public class ChangeStatePacketHandler : PacketRecvHandler
+{
+    public static bool send_S2C_ACK_CHANGE_STATE(Player player, Result result)
+    {
+        var ack_packet = new ClientToGame();
+        ack_packet.Response = new ClientToGameRes();
+
+        ack_packet.Response.ErrorCode = result.ErrorCode;
+        ack_packet.Response.ChangeStateRes = new();
+
+        if (false == GameServerApp.getServerLogic().onSendPacket(player, ack_packet))
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
+    {
+        var result = new Result();
+        var err_msg = string.Empty;
+
+        var entity_player = entityWithSession as Player;
+        NullReferenceCheckHelper.throwIfNull(entity_player, () => $"entity_player is null !!!");
+
+        var server_logic = GameServerApp.getServerLogic();
+
+        var state_action = entity_player.getEntityAction<StateAction>();
+        if (state_action == null)
+        {
+            err_msg = $"Failed to get state action : {nameof(StateAction)}";
+            result.setFail(ServerErrorCode.EntityActionNotFound, err_msg);
+            Log.getLogger().error(err_msg);
+
+            send_S2C_ACK_CHANGE_STATE(entity_player, result);
+            return result;
+        }
+
+        var game_msg = recvMessage as ClientToGame;
+        if (game_msg == null)
+        {
+            err_msg = $"Failed to cast ClientToGame !!! : {nameof(ClientToGame.Request.ChangeStateReq)}";
+            result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
+            Log.getLogger().error(result.toBasicString());
+
+            send_S2C_ACK_CHANGE_STATE(entity_player, result);
+            return result;
+        }
+
+        var request = game_msg.Request.ChangeStateReq;
+
+        if (EnumHelper.isDefined<PlayerStateType>(request.State) == false)
+        {
+            err_msg = $"is Not Defined PlayerStateType !!! PlayerStateType : {request.State} - {entity_player.toBasicString()}";
+            result.setFail(ServerErrorCode.ServerTypeInvalid, err_msg);
+            Log.getLogger().error(err_msg);
+            send_S2C_ACK_CHANGE_STATE(entity_player, result);
+            return result;
+        }
+
+        var player_state_type = (PlayerStateType)request.State;
+
+        result = await state_action.ChangeState(player_state_type);
+        if (result.isFail())
+        {
+            err_msg = $"Failed to ChangeState() !!! : {result.toBasicString()} - {entity_player.toBasicString()}";
+            Log.getLogger().error(err_msg);
+            send_S2C_ACK_CHANGE_STATE(entity_player, result);
+            return result;
+        }
+        send_S2C_ACK_CHANGE_STATE(entity_player, result);
+
+        return result;
+    }
+}