文件列表:

源代码\5.2 RDBMS for MMP\constantmodule.py (3849, 2002-08-12)
源代码\5.2 RDBMS for MMP\localization.py (2512, 2002-08-12)
源代码\5.2 RDBMS for MMP\lookup.py (4996, 2002-08-12)
源代码\5.2 RDBMS for MMP\stringscript.sql (4360, 2002-08-17)
源代码\5.2 RDBMS for MMP\stringtable.py (915, 2002-08-12)
源代码\5.2 RDBMS for MMP (0, 2007-08-21)
源代码\4.4 Fixed Size Allocator\BlockAllocator.h (2722, 2002-10-15)
源代码\4.4 Fixed Size Allocator (0, 2007-08-21)
源代码\4.3 Procedural Worlds\GLPlanet\Billboard.cpp (3048, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Billboard.h (2270, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\DXUtil.cpp (4463, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\DXUtil.h (4114, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Font.h (2972, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\GLPlanet.dsp (7467, 2002-10-08)
源代码\4.3 Procedural Worlds\GLPlanet\GLPlanet.dsw (539, 2002-10-08)
源代码\4.3 Procedural Worlds\GLPlanet\GLPlanet.exe (163840, 2002-10-10)
源代码\4.3 Procedural Worlds\GLPlanet\GLPlanet.rc (3782, 2002-08-12)
源代码\4.3 Procedural Worlds\GLPlanet\GLUtil.cpp (4618, 2002-10-10)
源代码\4.3 Procedural Worlds\GLPlanet\GLUtil.h (6462, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\GameApp.cpp (9260, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\GameApp.h (7567, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\GameEngine.cpp (8099, 2002-10-10)
源代码\4.3 Procedural Worlds\GLPlanet\GameEngine.h (3204, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\HeightMap.cpp (3512, 2002-10-07)
源代码\4.3 Procedural Worlds\GLPlanet\HeightMap.h (5329, 2002-10-07)
源代码\4.3 Procedural Worlds\GLPlanet\Impostor.cpp (4527, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Impostor.h (5143, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\ListClasses.h (4040, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\ListTemplates.h (22372, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Master.cpp (1558, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Master.h (3588, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Matrix.cpp (5687, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Matrix.h (43260, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Noise.cpp (11729, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\Noise.h (10253, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\PBuffer.cpp (4902, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\PBuffer.h (2505, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\PixelBuffer.cpp (10756, 2002-10-06)
源代码\4.3 Procedural Worlds\GLPlanet\PixelBuffer.h (7010, 2002-10-06)
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INTRODUCTION The software in this package constitutes a sample program that is intended to demonstrate the principles discussed in the articles: Precise Game Event Broadcasting with Python Creating a "Safe Sandbox" for Game Scripting In the accompanying book, "Massively Multiplayer Game Development". The two articles were originally written as independent representations, but in constructing the sample program, it became clear that both concepts would benefit from a consistent treatment within the same code base. FEATURES The program is a simple text-based multiplayer game server, similar to a MUD. The key features of interest include: * An asynchronous event broadcasting framework that allows interested code to register for events using very precise criteria, minimizing the overhead of polling for state changes and testing for the relevance of an event that has been received. * A framework for creating a "safe sandbox" in which game designers and other non-technical scripters may feel free to push the envelope of creativity without fear of undermining the stability of the server with coding errors or a less than perfectly engineered implementation. To showcase the above features, an interactive, game-like environment was developed to illustrate both how these features work, and how to write code that makes use of them. The secondary features that achieve this include: - Multi-user text-based (i.e. telnet) client support. - A "world" with 3 distinct "rooms" that players can enter. - A small set of trivial game behaviors, including a player inventory, the ability to take objects from the world, and the ability to engage in combat with other players. - A limited text-based command set that supports the game play, and navigation within the "world". FILES The files included in this package are listed and described below: / README -- This file gameserverdemo.py -- The "main" program that drives the server. /gameserver __init__.py -- Special empty file used by Python deferred.py -- Deferred call implementation [1] eventbroadcaster.py -- Event broadcaster implemenation [1] gameeventkeys.py -- Event keys for precise registration [1] gameevents.py -- Module of event id constants [2] gameobs.py -- Module containing a variety of game objects gameserver.py -- Core server framework, based on asyncore and asynchat [3] objmgr.py -- Object manager that allows addressing objects by an id [2] request.py -- Request handler and processor of input commands safesandbox.py -- Safe Sandbox implementation [1] sandboxrexec.py -- Restricted execution implementation [1] /gameserver/sandboxmodules __init__.py -- Special empty file used by Python battle.py -- A sandbox that provides an arena for combat [2] thetrap.py -- A sandbox that demonstrates prevention of prohibited operations [2] town.py -- A sandbox that implements a "social space" [2] Notes: [1] The code in these files implement the core concepts described in the articles. Refer to them for implementation details referred to in the text, and for comments that provide further explanation. This code is almost identical to the listings in the articles, except where variable or module names had to be changed in order to enable the code to work together in the same process. [2] These files represent concepts that either use the core concepts, or facilitate their implementation. They are briefly alluded to in the article text in an abstract fashion. Their implementation details will differ from the examples in the articles, but they should illustrate the concepts mentioned in them. [3] The asyncore.py and asynchat.py Python modules provide a useful framework for building asynchronous server applications. They are excellent for quickly prototyping concepts such as those presented by this demo. RUNNING THE DEMO To run the demo, you must have Python installed on your system. This code has been tested with Python 2.2, but it should work fine with anything from 2.0 and later. The code should work on both Windows and Linux, as no platform-specific features were used. To start the server, change directory to the directory containing this file. Then, run it with the following command: $ python gameserverdemo.py where is the port number on which the server will listen for client connections. To connect to the server as a client, use any telnet client to connect to the server's listening port. For example, if you started the server on port 2112, connect with: $ telnet 2112 where is the name of the computer on which the server is running. Once connected, type 'help' for a list of commands, and play around with it. CAVEAT EMPTOR The code presented in this project is for demonstration purposes only. Care was taken to ensure that the core concepts described in the articles were accurately implemented. However, it should be recognized that in the interest of simplicity, only limited attention was given to error handling. In addition, the code in this demo represents only one of many possible implementations of the concepts described in the article. You should consider your project's needs and architectural constraints when applying these principles in your own implementation. CONTACT INFORMATION I welcome questions and comments from readers. Please direct them to: Matt Walker mwalker@softhome.net

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