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Editar niveles usando XVI32 |
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•Written by José G M Y•
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••Monday•, 25 •May• 2009 15:09• |
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Un editor hexadecimal no sólo nos permite cambiar los datos de las partidas grabadas. También puede servir para identificar numerosos datos sobre un juego, por ejemplo, sobre el formato usado para almacenar niveles. En este tutorial vamos a comprobar cómo podríamos cambiar los niveles de RiLi, un juego de código abierto que no dispone de editor de niveles, utilizando un simple editor hexadecimal. NOTA: podemos cambiar los niveles de RiLi porque su licencia (GPL v2) permite la modificación; en otro tipo de juegos, tendríamos que atenernos a las normas legales (y nunca distribuir niveles modificados). |
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•Last Updated on ••Monday•, 25 •May• 2009 19:41•• |
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How to use an hex editor to find cheats |
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•Written by José G M Y•
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••Friday•, 15 •May• 2009 11:48• |
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In a previous article we learned how to edit savegames with the tools included by default in Windows systems. These tools are very awkward, however (starting with the point that DEBUG uses 100hex with addresses that are 00hex in every other program. So it's the time to turn into hex editors. An hex editor is a program that shows the stored values in each byte of a file and allows us to edit these values. Hex editors use to show hex values (like 48-4F-4C-41) side by side with corresponding ASCII values (in this case, "HOLA"); they also show decimal values corresponding to current byte/string depending on size (in this case, byte: 72, 2-byte-word: 20,296, 4-byte-long integer: 1,095,520,072). This allows us to easily find text blocks and data blocks and seek decimal values without using an hex calculator. They are many hex editors specifically designed for savegame editing, but we'll use a generic text editor in our tutorial: XVI32, available at http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm#download . |
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•Last Updated on ••Sunday•, 17 •May• 2009 10:49•• |
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Savegame editor for Bloodwich |
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•Written by José G M Y•
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••Sunday•, 03 •May• 2009 16:48• |
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Bloodwych was a nice RPG with 1st-person view developed by Microprose. It had very simple graphics, but it had a nice feature: it allowed simultaneous 2-player-game in the same computer. This feature made it one of my favorite games. In the many years I player bloodwich, I studied it carefully and analyzed its savegames files. |
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•Last Updated on ••Sunday•, 03 •May• 2009 20:46•• |
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Radiation cleaner for the original SimCity (1989) |
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•Written by José G M Y•
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••Friday•, 08 •May• 2009 13:52• |
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This is a tiny QBASIC (or freebasic) program you can use to edit savegames (.CTY files) from the original Simcity (1990). It can edit your funds and clean radiation. You should keep in mind Simcity detects savegame editing and reacts altering game gate. If you want to keep game date, you have to use secret keys instead (pressing F-U-N-D-S). |
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•Last Updated on ••Friday•, 08 •May• 2009 13:57•• |
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Keen Dreams savegame editor |
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•Written by José G M Y•
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••Sunday•, 03 •May• 2009 15:44• |
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Commander Keen was a popular shareware platform game series. The first game of this series I heard of was Keen Dreams, which was somehow similar to Mario World: you had a big island map where you could choose different levels to play, so you had the chance to exit a difficult level and choose an easier one. One of the registered game bonus was it shipped with a secret cheat key list. I won't publish that key list (since it is a bonus for pay users), but a description of the savegame format and a savegame editor. |
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•Last Updated on ••Friday•, 08 •May• 2009 14:09•• |
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