Subject: [stella] JoustPong: more exciting than ever! From: KirkIsrael@xxxxxxxxxxxxx Date: 23 Feb 2004 04:06:10 -0000 |
"Pterry" is now a resident of the magical JoustPong kingdom! I had probably my single most productive day of 2600 hacking. It's not quite done, I want to get Pterry swooping around a bit, and tweaking the bounce algorithm when the ball hits him (as opposed to a player, but overall I think it adds a lot to the game) A lot of little hurdles I had to overcome...the usual stuff of player-graphic reuse, plus I'm using the players for the score at a different part of the kernal, that kind of stuff. Usually I just hacked around issues by applying overgenerous dollops of RAM. Fortunately I had plenty to spare. The other major improvement came from me thinking about what made the game so tough. I went back to 2600 and MAME Joust and I realized that while I am doing a fair approximation of the physics of the flapping, there's relatively little in Joust that comes at you as fast as the JoustPong ball. (Pterry swooping and the angirest type of computer rider, maybe). So I gave subpixel tracking to the horizontal position of the ball to slow it down and resimplified the vertical positioning to fixed angles (none of my algorithms for changing the vertical speed according to what the player was doing worked very well.) This not only makes it easier for the human, but harder for the CPU. Let me know what you think! I noticed I haven't been able to stir up a lot of conversation on the game lately...is this at all because I link to a URL for the ROM and source, as opposed to an attachment? Just a thought... (I know it's mostly because I haven't been that interesting lately, but I don't know if people have a strong preference for attachments, which are almost impossible for me to do from this account. The good news is that I plan to make any bin/source URL I post here permanent, so they won't go missing from the stella archive.) Journal (w/ a cute animated GIF of my Pterry) at http://alienbill.com/joustpong/ Latest bin: http://alienbill.com/joustpong/20040222.bin Latest source: http://alienbill.com/joustpong/20040222.source.txt -- KirkIsrael@xxxxxxxxxxxxx http://kisrael.com "God or somebody save us from any society founded on Darwinian principles." --Richard Dawkins ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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