Tuesday, September 30, 2008

Better memory copy/set

Once again, Cearn is my hero. The fast assembly routines he sent for doing memory copies and sets are wonderful -- they just worked, and are nice and fast. I don't have to deal with the oddities that come with DMA, and it's a whole lot faster than the simple memory copies implemented in C. This means that transitions in general are a lot smoother -- between splash screens, between game rooms, etc. Good stuff.

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Scrolling Camera Tweaks

One of the subtle things that can really impact how a scrolling platformer feels is how the camera works. Does the character stay centered, ...