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cbmeeks
Registered: Oct 2005
Posts: 73 |
Simple (lol) coding questions please!
Been out of the 6502/10 loop for a while and thought I would jump back in and see what I can do. I have a few questions that I can't seem to get answers on. Any help is greatly appreciated.
1) Where can I find a good tutorial/example that shows how to do a simple screen scroll? I realize "simple" is a relative term but what I mean by a simple scroll is that I don't need 8-way (like Turrican) and I don't need to color-shift. My needs are simple. Think Metroid. :-) Metroid is a very basic scroller. Now, I know I need to double-buffer and since I will probably need to scroll in 2 pixel increments, I will need to copy 1000/4 chars per frame. I can cheat a little and save a few lines with a score bar. In theory, I know HOW I should do it but I guess I need that jump-start.
2) Can I wipe out BASIC and use that space (A000-BFFF) to store data? I'm at work now so I can't test. I could store a lot of map data in that 8k.
Thanks!!!!
cbmeeks
METROID
http://www.metroidclassic.com |
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cbmeeks
Registered: Oct 2005
Posts: 73 |
Quote: No need to switch memory when loading to $e000-$ffff. Saving, on the other hand...
@Burglar:
Yeah, I found that one. Great site! If I finish the howto I will post it there.
@TNT:
I would only need to say game states. Unless I want to figure out a password system like the original Metroid. But thanks for the tip!
METROID
http://www.metroidclassic.com |
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chancer
Registered: Apr 2003
Posts: 346 |
also look at puterman's tutorial , which is good.. again on the site burg has mentioned.
and
http://oldschool-gaming.com/c64_hex_files.php |
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cadaver
Registered: Feb 2002
Posts: 1154 |
TNT: Heh, I guess was thinking ahead to loading compressed data with LZ77 or similar method (which needs the earlier loaded bytes), since I rarely load anything uncompressed :) |
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