refactor NetworkConnection and NetworkPacket

src/network/NetworkPacket.h

@@ -0,0 +1,70 @@
+#pragma region Copyright (c) 2014-2016 OpenRCT2 Developers
+/*****************************************************************************
+ * OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
+ *
+ * OpenRCT2 is the work of many authors, a full list can be found in contributors.md
+ * For more information, visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * A full copy of the GNU General Public License can be found in licence.txt
+ *****************************************************************************/
+#pragma endregion
+
+#pragma once
+
+#include <memory>
+#include <vector>
+#include "../common.h"
+
+class NetworkPacket
+{
+public:
+    uint16                              size;
+    std::shared_ptr<std::vector<uint8>> data;
+    uint32                              transferred;
+    sint32                              read;
+
+    static std::unique_ptr<NetworkPacket> Allocate();
+    static std::unique_ptr<NetworkPacket> Duplicate(NetworkPacket& packet);
+
+    NetworkPacket();
+
+    uint8 * GetData();
+    uint32  GetCommand();
+
+    void Clear();
+    bool CommandRequiresAuth();
+
+    const uint8 * Read(uint32 size);
+    const utf8 *  ReadString();
+
+    void Write(const uint8 * bytes, uint32 size);
+    void WriteString(const utf8 * string);
+
+    template <typename T>
+    NetworkPacket & operator >>(T &value)
+    {
+        if (read + sizeof(value) > size)
+        {
+            value = 0;
+        }
+        else
+        {
+            value = ByteSwapBE(*((T *)&GetData()[read]));
+            read += sizeof(value);
+        }
+        return *this;
+    }
+
+    template <typename T>
+    NetworkPacket & operator <<(T value) {
+        T swapped = ByteSwapBE(value);
+        uint8 * bytes = (uint8 *)&swapped;
+        data->insert(data->end(), bytes, bytes + sizeof(value));
+        return *this;
+    }
+};