Re: A83: A problem with matrices
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Re: A83: A problem with matrices
James Vernon wrote:
> On Wed, 28 Jul 1999 21:05:54 PDT, the homonerdicus wrote:
> >
> >I think you're still better off to do them in a .db format....
> >The simple code of the calls to _puttomat and the inc take more space.
> >I tried using the matrices for a different prog a while ago and let me tell
> >you that it is really not worth it if you are working with integers ( N|
> >)..
> >
> >what you are trying to do would look like this...
> >
> >
> >level_one:
> >.db 0,0,2,0,0
> >.db 0,0,2,0,0
> >.db 0,2,2,2,0
> >.db 0,0,2,0,0
> >.db 0,0,1,0,0 ; all of this is 25 bytes !
> >
> >
> >You can then acces the matrice in the following manner...
> >
> >#DEFINE row2 5 ;those don't go in to the 83p file
> >#DEFINE row3 10 ;they are just aids....
> >#DEFINE row4 15
> >#DEFINE row5 20
> >
> >#DEFINE el2 1
> >#DEFINE el3 2
> >#DEFINE el4 3
> >#DEFINE el5 4
> >
> >
> >to acces level_one[2,3]
> >
> >you have to do (if it is a number beween 0 and 255)
> > (it it is larger you have to use .dw)
> >
> >ld a,5
> >ld (level_one+row2+el3),a
> > and
> >ld a,(level_one+row2+el3)
> >
> >if later on you don't know which level you are in ...it will happen.. you
> >can use the ix register and do the offsets with it)
> >
> >
> >glad I could help...
> >
> >An advice from me.... stay away fro ROM calls as much as possible.
> >
> >homonerdicus
> >
> >>From: Pizza of Hut <pizzaofhut@geocities.com>
> >>Reply-To: assembly-83@lists.ticalc.org
> >>To: assembly-83@lists.ticalc.org
> >>Subject: Re: A83: A problem with matrices
> >>Date: Wed, 28 Jul 1999 21:55:34 -0500
> >>
> >>
> >>
> >>
> >>James Vernon wrote:
> >>
> >> > On Wed, 28 Jul 1999 20:55:17 -0500, Pizza of Hut wrote:
> >> > >
> >> > >Hello everyone. I am attempting to program a 3-D shooter using
> >>matrices
> >> > >to generate the maps. The data used to create the matrix used for a
> >> > >certain level is stored in an external file and is called by the main
> >> > >program as follows:
> >> > >
> >> > >load_level_1:
> >> > > call _clrscrnFull
> >> > > ld a,4
> >> > > ld (currow),a
> >> > > ld a,3
> >> > > ld (curcol),a
> >> > > ld hl,get_psyched
> >> > > call _puts
> >> > > call _zerooop1
> >> > > ld hl,lev_1
> >> > > ld de,op1
> >> > > ld bc,8
> >> > > ldir
> >> > > call _chkfindsym
> >> > > jr c,error_dat
> >> > > call _exec_assembly
> >> > > ret
> >> > >
> >> > >lev_1:
> >> > > .db PROGOBJ,"ISMDAT1",0
> >> > >
> >> > >In the the file "ISMDAT1" which holds the data for the first level, I
> >>am
> >> > >attempting to create a 5x5 matrix and store numbers to them using the
> >> > >following code:
> >> > >
> >> > > call _zerooop1
> >> > > ld hl,op1
> >> > > ld (hl),matobj ;Value of token = 02h
> >> > > inc hl
> >> > > ld (hl),tvarmat
> >> > > inc hl
> >> > > ld (hl),tmata
> >> > > call _chkfindsym
> >> > > ld hl,$0505
> >> > > call _creatermat ;Calls ROM addr. 446Ah
> >> > > push de
> >> > > ld hl,0 ;Value to store to matrix element
> >> > > call _setxxxxop2
> >> > > call _op1exop2
> >> > > pop de ;Address of Matrix A
> >> > > ld bc,$0101 ; Address of element (1,1)
> >> > > call _puttomat ;Stores 0 to (1,1)
> >> > > inc bc ;Move on to next element
> >> > > call _puttomat
> >
> >; ...
> >
> >> > > ld hl,1
> >> > > call _setxxxxop2
> >> > > call _op1exop2
> >> > > pop de
> >> > > ld bc,$0503
> >> > > call _puttomat
> >> > > push de
> >
> >
> >> > > ld hl,2
> >> > > call _setxxxxop2
> >> > > call _op1exop2
> >> > > pop de
> >> > > ld bc,$0302
> >> > > call _puttomat
> >
> >> > > inc bc
> >> > > call _puttomat
> >
> >> > > inc bc
> >> > > call _puttomat
> >
> >> > > ld bc,$0103
> >> > > call _puttomat
> >> > > ld bc,$0203
> >> > > call _puttomat
> >> > > ld bc,$0403
> >> > > call _puttomat
> >> > > ret
> >> > >.end
> >> > >END
> >> > >
> >> > >If anyone could help me with this problem of mine, I would be most
> >> > >appreciative.
> >> > >
> >> > >--
> >> > >Pizza of Hut
> >> > >http://www.antishrine.sacone.com/
> >> >
> >> > Couldn't you extract the data to a temp program of something in a
> >>series
> >> > of .db statements??
> >> >
> >> > James Vernon
> >> > jimbob_v@hotmail.com
> >> >
> >> > ______________________________________________________
> >> > Get Your Private, Free Email at http://www.hotmail.com
> >>
> >>I would, however, the data files would be huge, and with the TI-83's tiny
> >>memory, I could only have a couple of levels. I'm hoping to find a way to
> >>fix
> >>the program I'm currently using. BTW, if it helps, when the program is
> >>called,
> >>I get an ERR: DATA TYPE msg, then the calc crashes.
> >>
> >>--
> >>Pizza of Hut
> >>http://www.antishrine.sacone.com/
>
> I agree.. stay away from the ROM calls as much as possible, unless you're
> not too concerned about speed.. I find Matrices time consuming, and besides,
> every cell in a Matrix takes 9 bytes.. I don't think they're worth it!
>
> James Vernon
> jimbob_v@hotmail.com
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
Yeah, I hate how matrices suck up memory, but it's the only way I know how to do
3-D graphics.
--
Pizza of Hut
http://www.antishrine.sacone.com/
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