[A83] Re: tile maps and stuff

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: tile maps and stuff
From: "D Weiss" <dwedit@hotmail.com>
Date: Wed, 21 Feb 2001 17:00:34 -0600
Reply-To: assembly-83@lists.ticalc.org


First make a map and tiles (as described before), then:

ld de,Map
call Drawmap
call ionFastCopy
bcall(_getkey)
ret

The code will draw a tilemap, then quit when you press a key



>From: Jeff Ruud <pyroboy_04@yahoo.com>
>Reply-To: assembly-83@lists.ticalc.org
>To: assembly-83@lists.ticalc.org
>Subject: [A83] Re: tile maps and stuff
>Date: Wed, 21 Feb 2001 14:39:00 -0800 (PST)
>
>
>Cool....can someone explain how this code works?
>
>
>
>
>   D Weiss <dwedit@hotmail.com> wrote:
>
>I suggest TCPA's tilemap routine:
>
>;Input map address in DE
>Drawmap:
>ld hl, plotsscreen
>ld bc, 8*256+0
>DrawmapLoop:
>ld a, (de)
>push de
>push hl
>ld l, a
>ld h, 0
>add hl, hl
>add hl, hl
>add hl, hl
>ld de, tiles
>add hl, de
>ex de, hl
>pop hl
>push bc
>ld b, 8
>push hl
>DrawmapLoop2:
>ld a, (de)
>ld (hl),a
>inc de
>push bc
>ld bc, 12
>add hl, bc
>pop bc
>djnz DrawmapLoop2
>pop hl
>pop bc
>pop de
>inc de
>inc hl
>inc c
>ld a, c
>cp 12
>jr nz, Drawmaploop
>ld c,0
>push de
>ld de, 7*12
>add hl, de
>pop de
>djnz Drawmaploop
>ret
>
>
>For the actual map, use a bunch of .db's:
>Make sure it's 12 wide and 8 high (these are bytes, 0-255)
>
>
>Map:
>.db 1,1,1,1,1,1,1,1,1,1,0,0
>.db 1,0,0,0,0,1,0,0,0,1,0,0...
>
>
>(continue this 12 wide and 8 high)
>
>Then tiles: (use .db %00000000) 0=white, 1=black
>
>Tiles:
>.db %10000000
>.db %00001000
>.db %00100000
>.db %00000000
>.db %00000010
>.db %01000000
>.db %00001000
>.db %00000001
>
>.db %11111111
>.db %10000001
>.db %10000001
>.db %11111111
>.db %11111111
>.db %00011000
>.db %00011000
>.db %11111111
>
>
> >From: Jeff Ruud
>
> >Reply-To: assembly-83@lists.ticalc.org
> >To: assembly-83@lists.ticalc.org
> >Subject: [A83] tile maps and stuff
> >Date: Tue, 20 Feb 2001 19:11:41 -0800 (PST)
> >
> >
> >How do i make a program that reads a tile map such as:
> >000110001
> >000000001
> >101010111
> >101010101
> >or anything. I tried looking at source code to different programs but 
>that
> >doesn't really help me, cuz nothing is explained. Basically i just want 
>to
> >know how to read all of those ones and zeros at the bottom of the screen
> >and make a tile map out of it.
> >
> >Thanks for the help.....
> >
> >
> >
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[A83] Re: tile maps and stuff

From: Jeff Ruud <pyroboy_04@yahoo.com>