Re: [stella] Jumpman: Easy Does It

Subject: Re: [stella] Jumpman: Easy Does It
From: Manuel Rotschkar <cybergoth@xxxxxxxx>
Date: Fri, 17 Sep 2004 16:27:28 +0200
Hi there!

Thanks! Attached is the promised update with structure changes applied. Costs 28 bytes of RAM for this level. I guess I can reserve half of Stellas RAM for stuff like that, so next I'll sort out the levels that'd require more than 64 Bytes for structure changes.

So, how are you doing that if not by using asymmetric PF graphics?

Timed overwrites of PF0/1 where required. The whole screen is devided in 5 separate kernels, with the two variable sections being specialized to this.

BTW: This more or less kills the vb idea for more colors I think. As I understand, it'd require twice the data(?) so in this case twice the RAM...

Sorry, I do not understand (but I would like too ;-)

Two make the structure blue and the ladders yellow, I'd need to double the data and split it into structure/ladders only, alternately displaying those and adjust the colors accordingly. That's what Paul suggested I think. Something like flickering sprites at 30Hz.

Hm... no flicker on Jumpman, but probably worst case scenarios where it can go down to 20 Hz for bombs/ropes and enemies on certain levels.

With assymetrical, non striped playfields, you won't be able to reposition at all. So, how about striping it?

There might be empty areas for this as well, or partially mirrored areas (like in Venture). Also, not all screens require multiplexed enemies.

Also since all ropes are stationary for example, I don't need to reposition them, I can just disable them and shift them into place.

I can do ropes like this:


| | |

| | |

Using one single missile without any need to reposition... just big tables of HMOVE&ENABLE values...

I fear I'll end up programming 20 separate games, one for each level
...  ;-)

Is there a link where I could see all those levels? And which do you think may be doable and which not?

There you go:

I think not doable are at least:

"Mystery Maze"
"Hot Foot"

And I'm in doubt about these:

"Follow The Leader"
"Figurits Revenge"
"Look Out Below"
"Great Puzzle I"
"Great Puzzle II"
"Now You See It...."

I must admit I never played the game long enough to get very far.

Shame on you! ;-)


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