Subject: [stella] karate frame generation From: "Andrew Davie" <adavie@xxxxxxxxxxxxxxxxx> Date: Sat, 2 Jan 1999 20:49:28 +1100 |
--???????? _????????????? Andrew Davie ??? _? *? (_|?? _???????? adavie@xxxxxxxxxxxxxxxxx <mailto:adavie@xxxxxxxxxxxxxxxxx> ?? (/_??? _? , | )??????? ICQ 3297382 (boofly)?? ?,???? ,~' L_|\??? _| (?? ,-'??????? \? (_|???? http://www.comcen.com.au/~adavie? + ?? (??????????? \?? _????? /slide? = Slide Rule Trading Post \/? \??? __??? @/? (?????? /weird? = Weird Computing Machines ? _? L,~'? "\__/? _??????? /slide/calculator/soviet.html = ?(_|????????? v? (/_???????? Museum of Soviet Calculators ????? _|?????????????????? /javaslide/javaslide.html = ???? (_| *? \/\/???????????? Interactive Java Slide Rule Past postings on [stella] dealing with a fighting game, and animation for same, prompted me to have a quick play around with generating suitable 2-colour frames within a 48x48 pixel grid. I'm half tempted to do a karate game myself, having done one yonks ago it's quite appealing. I am inspired by the BIGTWO demo, which allows freeform movement of two 48x48 sprites over the screen. I thought I'd share with the list the results of reducing a line-art karate animation to a suitable size for 2600 display, and invite comments on the suitability of the results. I think the important thing is to keep animation happening quickly, so that the chunkiness is less apparent to the naked eye. The first image (karate4.jpg) shows a small selection of the approximately 100 frames I have at my disposal. They're great for a karate game, and my plan is to eventually process them all. The pictures are rather grainy due to the high JPG compression used. I will be happy to email anyone higher quality pictures upon request. The method is shown step-by-step in karate3.jpg. First is the original frame (I chose #59 semi-randomly - it's one of the tallest, so gives me some idea of the reduction needed to make them all fit within 48x48 pixels). The second frame has had the hair, pants filled in black, and the outer edges grown by 1 pixel. All processing is done with PSP 5.0, and is fairly simple - about 5 minutes/frame. The frame is then reduced to 45%, and heavy sharpening is applied. This is to make the grey/antialiased lines much blacker and more solid. The process (reduce, sharpen) is repeated. Doing this in two stages rather than a single reduce/sharpen produces a much more "solid" image. The next step is to reduce it to two colours, the results of which you can see enlarged (400%) at the far right. Comparing with the original, it's reasonably OK - certainly good enough for a frame of animation in a constantly moving fighting game. I plan to do a dozen or so frames, just to see how they'd look. If there's any interest, I will post the results for stella readers to examine. So, what do you guys think - wouldn't it be cool to have two guys about this size/shape beating each other to death? Cheers A
Attachment:
karate4.jpg
Description: JPEG image
Attachment:
karate3.jpg
Description: JPEG image
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