A83: Re: controlling sprites

To: <assembly-83@lists.ticalc.org>
Subject: A83: Re: controlling sprites
From: "David Phillips" <electrum@tfs.net>
Date: Wed, 28 Oct 1998 21:14:56 -0600
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


Are you talking about a tilemap based game, such as Sqrxz or Penguins?  To
do this you must make a tilemap, which is an "array" or block of memory in
which each byte value stands for which sprite to draw at that position.

Example:
 .db 3,1,0,2
 .db 1,3,2,0
 .db 0,2,1,1
 .db 3,2,0,0

Pretend that the letters A-D are sprites 0-3, so the screen would look like
this:

DBAC
BDCA
ACBB
DCAA

Writting a side scroller takes a long time to do and requires a good
knowledge of Z80 and the calculator you are writting it for.  Something
simpler like Slippy or Insane Game would be much easier to do.  Both these
games use a tilemap similar to the above.  Something simplier would be
better to write first, before you try for a side scroller.

-----Original Message-----
From: Chris Hiszpanski <mecad@scv.net>
To: assembly digest <assembly-83-digest@lists.ticalc.org>
Date: Wednesday, October 28, 1998 8:52 PM
Subject: A83: controlling sprites


>
>How can I control many sprites in a background like scolling routine? To
>paste them do I just to
>
>ld hl,5*256+5
>ld (pencol),hl
>call putspr
>
>ld hl,13*256+5
>ld (pencol),hl
>call putspr
>
>a million times?
>There must be a better way.
>
>From: Chris
>mecad@scv.net
>
>

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