GEEKING

Network/raknet/Source/cat/io/PackageManager.hpp

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+/*
+	Copyright (c) 2009-2010 Christopher A. Taylor.  All rights reserved.
+
+	Redistribution and use in source and binary forms, with or without
+	modification, are permitted provided that the following conditions are met:
+
+	* Redistributions of source code must retain the above copyright notice,
+	  this list of conditions and the following disclaimer.
+	* Redistributions in binary form must reproduce the above copyright notice,
+	  this list of conditions and the following disclaimer in the documentation
+	  and/or other materials provided with the distribution.
+	* Neither the name of LibCat nor the names of its contributors may be used
+	  to endorse or promote products derived from this software without
+	  specific prior written permission.
+
+	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+	AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+	ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+	LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+	POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CAT_PACKAGE_MANAGER_HPP
+#define CAT_PACKAGE_MANAGER_HPP
+
+#include <cat/Platform.hpp>
+#include <cat/port/FastDelegate.h>
+
+namespace cat {
+
+
+// Package resource identifier macro
+#define CAT_UNCAGE(packagePath, offset, size) offset, size
+
+/*
+	All file resources are packed into one large file and each is
+	assigned a unique identifying number, starting from 0.
+
+	The client source code is preprocessed by a tool that replaces the
+	arguments of the CAT_UNPACK() macro with the correct ID number based
+	on the string given as the first argument.
+
+	CAT_UNPACK("world1/lightmap3.png")
+	-> CAT_UNPACK("world1/lightmap3.png", 15241, 256, 0xdecryptionkey)
+
+	At runtime the client application will not be aware of the string
+	name of a resource in the package, only where to go to get it.
+
+	Resources that are used together during tuning will have identifiers
+	that are close together so that disk seek time is minimized.
+*/
+
+
+/*
+	Kennel files are simple concatenations of all of the game resources.
+
+	The goal is to reduce access time to data by cutting the operating
+	system's file-system out completely.  Furthermore, data that are
+	accessed together are stored together on disk and in the same order
+	that they are accessed.
+
+	Textures are compressed with modified JPEG-LS, providing the fastest
+	possible access time.
+	Sounds compression hasn't been investigated yet.
+
+	Each resource (sound/texture) is obfuscated with a 64-bit key, making
+	it necessary to reverse-engineer the game client to decode in-game
+	resources outside of the game.
+
+	The KennelFile object implements optimized algorithms for performing
+	in-place modification to a large datafile (>4 GB).
+*/
+
+class KennelPatchFile : AsyncFile
+{
+public:
+	KennelPatchFile();
+	~KennelPatchFile();
+
+public:
+	void Insert
+};
+
+
+// Kennel Patch Callback (param=bool: true on successful patch, false on error)
+typedef fastdelegate::FastDelegate1<bool, void> KennelPatchCallback;
+
+class KennelFile : AsyncFile
+{
+public:
+	KennelFile();
+	virtual ~KennelFile();
+
+public:
+	bool Move(u64 dest, u32 region_size, u64 src, KennelPatchCallback OnComplete);
+};
+
+
+} // namespace cat
+
+#endif // CAT_PACKAGE_MANAGER_HPP