Subject: Re: [stella] More flicker, please From: Manuel Polik <cybergoth@xxxxxxxx> Date: Sun, 06 Oct 2002 19:44:46 +0200 |
Hi Thomas! >>Left/Right: I don't like what these would cost. >- All they would need are some additional AND inside the kernel >to mask the wrapping bits. Right? Is the reflection the problem >here? No, reflections can be handled. The main problem I see with ANDing and most of the other solutions you mentioned (set aside the cycles I don't have for the moment) is that it'd reduce the the visible space for another 16 pixels on both sides. So it'd be reduced from 128 to 96 Pixels. Hm... >- Or use the trick with all HMOVE-blanks on the left side. They >would mask 8 bits. But not 16. >- Or make two 8 pixel wide vertical borders using the PF (like >a cockpit window). Which'd turn the croshair & the stars black. The best solution I could think of so far, would require 8 times the needed ROM, which I was refering to when I said I didn't like the cost. >>Top: I didn't get it going without a blind spot. There >>was always a vertical point where I wasn't able to >>display a sprite. I was only able to shift that blind >>spot, but didn't find a way to get rid of it. As I had >>it working yesterday it was consuming lot's of ROM (~100 >>bytes) and cycles (~ 5 scannlines) and it still looked >>crappy, so I discarded that code again. >Hm, do you really want to leave it that way? Or should we try >to find a way together? I can reinstal the code I had so far and you can give it a try, if you really like to do that. I didn't get it, neither with try & error nor with thinking about it. >BTW: The orange ship seems to pop up very late (seen from the >top). I think there is a little bug in your code. Hm... it requires 2 extra lines for the kernel to determine wether the next ship is ready for repositioning. I assume these are part of the "blind spot" problem I mentioned. But, all I could do was shifting it :´-( Greetings, Manuel ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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