vitoco Posted October 31, 2020 Share Posted October 31, 2020 Halloweenvaders This Halloween, while visiting the Cemetery, many creatures want to catch you. But do not panic, you can hide behind the tombstones and throw them some of the holy water you brought in a jar. ---------------------- This is a simple hack of the original Space Invaders game for the VCS: Same game variations Same scoring Different colors Different sounds Different enemies Different cannon Different explosions I got a raw assembly listing directly from the ROM using Stella emulator, and then I used DASM to reassembly it to be sure I could get the same binary. Then I searched for bitmaps inside the raw sources (Stella already suggested where they were and how they looked like, sometimes plain and sometimes vertically mirrored). Given the height of them, I used Excel to draw new images over a grid and used formulas in the same spreadsheet to generate the corresponding code. I replaced the old images in the source code with the new ones, reassembled it and tested it successfully. Then I searched the code for sound routines and looked for the data, which I also changed. Finally, I searched for sprite coloring instructions, found its data table and modified it. Ta-da! BTW, I didn't want to change the score fonts because they already are too basic. Not a scary game? Try game #8... Not scary enough? Then try game #16!!! ? ----------------------------- I did this hack for the tonight's @ZeroPage Homebrew Halloween stream... Enjoy! Halloweenvaders.bin 5 Quote Link to comment Share on other sites More sharing options...
+ZeroPage Homebrew Posted October 31, 2020 Share Posted October 31, 2020 Thanks so much @vitoco for making this hack for our stream tonight! It was a fun twist on Space Invaders, especially for Halloween!! ? - James 1 Quote Link to comment Share on other sites More sharing options...
vitoco Posted October 31, 2020 Author Share Posted October 31, 2020 12 hours ago, ZeroPage Homebrew said: Thanks so much @vitoco for making this hack for our stream tonight! I had fun doing it, and also tested myself about what I've learned about the 2600 programming these last couple of months. I just want to try it in real hardware!!! 2 Quote Link to comment Share on other sites More sharing options...
+ZeroPage Homebrew Posted November 1, 2020 Share Posted November 1, 2020 For anyone who missed ZeroPage Homebrew's HALLOWEEN HOMEBREW SPECIAL where we played Halloweenvaders check out the archived video below: We had a huge number of SPOOKY hacks and homebrews tomorrow including THREE Exclusive Halloween Homebrews and Hacks just for the show! Games: Pumpkin Muncher (2020 Exclusive Final Release | Hack of Fast Food) by Brad McFeggan & Scott Dayton (@neotokeo2001) Halloweenvaders (2020 Exclusive Final Release | Hack of Space Invaders) by Víctor Parada (@vitoco) Bone Bros (2020 | Hack of Mario Bros.) by James Catalano (Jamcat Reloaded) and updated by Scott Dayton (@neotokeo2001) Spiderz (2020 | Hack of Crackpots) by Peter Steriotis aka Otis P. Driftwood from RepentlessVG Ghost Manor (1983) by Xonox Helloween (2003 | Hack of Pitfall) by @Raccoon Lad Nitemare Pinball (2003 | Hack of Pinball) by Scott Dayton (@neotokeo2001) Pumpkinhead (2003 | Hack of Frankenstein's Monster) by Scott Dayton (@neotokeo2001) Nitemare (2003 | Hack of Megamania) by Scott Dayton (@neotokeo2001) Castle of Doom (2020 Exclusive WIP Update) by Chris Read (@atari2600land) (SET VIDEO TO 1080P60 FOR FULL QUALITY) Quote Link to comment Share on other sites More sharing options...
AW127 Posted November 29, 2020 Share Posted November 29, 2020 Cool hack. Now make the "Halloweeners" hack of this game. Quote Link to comment Share on other sites More sharing options...
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