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Harrierfalcon
Advanced Member (Posts: 224)

Grayscale Tic-Tac-Toe
10 Jun 2007 06:41:43 am

I was messing around with the DCS GUI API, and I started to want to make a Tic-Tac-Toe program that would run in a window within DCS.

My first step was to write a Tic-Tac-Toe program, because I've never written one before. It wouldn't be hard.

Then I made it grayscale. Because I wanted to.

So, I wrote some code and made some graphics, and tested it, but it's not working like it should.

Here's the code:
Code:

.nolist


#include "ion.inc"


#include "ti83plus.inc"


.list


   .org progstart-2


   .db $BB,$6D


   xor a   ;should be "ret" if using Ion libs


   jr nc,begin


   .db "Title",0


begin:





   ld hl,ttt_gray


   ld de,ttt_temp1


   ld bc,ttt_gray-ttt_temp1


   ldir


   b_call(_grbufclr)


   xor a


   ld l,a


   ld ix,ttt_temp1


   ld c,4


   ld b,32


   call ilsprite


   call fastcopy


startGame:


wait1:


   xor a


   ld l,a


   ld ix,ttt_temp2


   ld c,4


   ld b,32


   call ilsprite


   call fastcopy


   b_call(_getcsc)


   or a


   jr z,wait1


   xor a


   ld (cursorX),a


   ld (cursorY),a


   call erasegray


   b_call(_grbufclr)


   xor a


   ld l,a


   ld ix,ttt_temp1


   ld c,4


   ld b,32


   call ilsprite


wait2:


   xor a


   ld l,a


   ld ix,ttt_temp2


   ld c,4


   ld b,32


   call ilsprite


   call fastcopy


   b_call(_getcsc)


   or a


   jr z,wait2


   ret


eraseGray:


   ld a,(cursorY)


   ld l,a


   ld h,0


   ld d,h


   ld e,l


   add hl,hl


   add hl,hl


   add hl,de


   add hl,hl


   add hl,de


   add hl,hl


   add hl,hl


   ld de,ttt_temp1


   add hl,de


   ld a,(cursorX)


   or a


   jp z,egFirst


   cp 1


   jp z,egSecond


egThird:


   ld b,2


eg3Loop1:


   push bc


   ld b,10


eg3Loop2:


   ld a,(hl)


   and %11111100


   ld (hl),a


   inc hl


   ld a,(hl)


   and %00000000


   ld (hl),a


   inc hl


   inc hl


   inc hl


   djnz eg3Loop2


   pop bc


   ld de,88


   add hl,de


   djnz eg3Loop2


   ret


egSecond:


   ld b,2


eg2Loop1:


   push bc


   ld b,10


eg2Loop2:


   ld a,(hl)


   and %11100000


   ld (hl),a


   inc hl


   ld a,(hl)


   and %00000111


   ld (hl),a


   inc hl


   inc hl


   inc hl


   djnz eg2Loop2


   pop bc


   ld de,88


   add hl,de


   djnz eg2Loop2


   ret


egFirst:


   ld b,2


eg1Loop1:


   push bc


   ld b,10


eg1Loop2:


   ld a,(hl)


   and %00000000


   ld (hl),a


   inc hl


   ld a,(hl)


   and %00111111


   ld (hl),a


   inc hl


   inc hl


   inc hl


   djnz eg1Loop2


   pop bc


   ld de,88


   add hl,de


   djnz eg1Loop2


   ret


;================== Functions exactly like iputsprite ==================


isprite:


    ld    e,l


    ld    h,$00


    ld    d,h


    add    hl,de


    add    hl,de


    add    hl,hl


    add    hl,hl               ;Find the Y displacement offset 


    ld    e,a


    and    $07               ;Find the bit number


    ld    c,a


    srl    e


    srl    e


    srl    e


    add    hl,de             ;Find the X displacement offset


    ld    de,plotsscreen


    add    hl,de


ispriteLoop1:


   ld    d,(ix)             ;loads image byte into D


    ld    e,$00


    ld    a,c


    or    a


    jr    z,ispriteSkip1


ispriteLoop2:


    srl    d                  ;rotate to give out smooth moving


    rr    e


    dec    a


    jr    nz,ispriteLoop2


ispriteSkip1:


    ld    a,(hl)


    xor    d


    ld    (hl),a


    inc    hl


    ld    a,(hl)


    xor    e


    ld    (hl),a              ;copy to buffer using XOR logic


    ld    de,$0B


    add    hl,de


    inc    ix                   ;Set for next byte of image


    djnz    ispriteLoop1 


    ret


fastCopy:


   di


   exx


   ld a,$80                        ; 7


   out ($10),a                     ; 11


   out ($20),a                     ; 11  Sets first two bits to zero to slow calc down if 83pse/84xx


   ld hl,plotsscreen-12-(-(768)+1) ; 10


   ld a,$20                        ; 7


   ld c,a                          ; 4


   inc hl                          ; 6 waste


   dec hl                          ; 6 waste


fastCopyAgain:


   ld b,64                         ; 7


   inc c                           ; 4


   ld de,-(12*64)+1                ; 10


   out ($10),a                     ; 11


   add hl,de                       ; 11


   ld de,10                        ; 10


fastCopyLoop:


   add hl,de                       ; 11


   inc hl                          ; 6 waste


   inc hl                          ; 6 waste


   inc de                          ; 6


   ld a,(hl)                       ; 7


   out ($11),a                     ; 11


   dec de                          ; 6


   djnz fastCopyLoop               ; 13/8


   ld a,c                          ; 4


   cp $2B+1                        ; 7


   jr nz,fastCopyAgain             ; 10/1


   exx


   ret


;-----------Ion Large Sprite-----------


;Input:   ix->sprite


;   a=x


;   l=y


;   b=height   (in pixels)


;   c=width      (in bytes, e.g. 2 would be 16)


;Output: nothing


; All registers are destroyed except bc', de', hl'


ilsprite:


   di


   ex   af,af'


   ld   a,c


   push   af


   ex   af,af'


   ld   e,l


   ld   h,$00


   ld   d,h


   add   hl,de


   add   hl,de


   add   hl,hl


   add   hl,hl


   ld   e,a


   and   $07


   ld   c,a


   srl   e


   srl   e


   srl   e


   add   hl,de


   ld   de,gbuf


   add   hl,de


ilspriteLoop1:


   push   hl


ilspriteLoop2:


   ld   d,(ix)


   ld   e,$00


   ld   a,c


   or   a


   jr   z,ilspriteSkip1


ilspriteLoop3:


   srl   d


   rr   e


   dec   a


   jr   nz,ilspriteLoop3


ilspriteSkip1:


   ld   a,(hl)


   xor   d


   ld   (hl),a


   inc   hl


   ld   a,(hl)


   xor   e


   ld   (hl),a


   inc   ix


   ex   af,af'


   dec   a


   push   af


   ex   af,af'


   pop   af


   jr   nz,ilspriteLoop2


   pop   hl


   pop   af


   push   af


   ex   af,af'


   ld   de,$0C


   add   hl,de


   djnz   ilspriteLoop1


   pop   af


   ret


cursorX:   .db 0


cursorY:   .db 0


ttt_temp2:


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$00,$00,$00,$00,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$00,$00,$00,$00,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


ttt_temp1:


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$FF,$FF,$FF,$FF,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$FF,$FF,$FF,$FF,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


ttt_gray2:


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$00,$00,$00,$00,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$00,$00,$00,$00,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


   .db $FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF,$FF,$DF,$FB,$FF


ttt_gray:


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$FF,$FF,$FF,$FF,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA


   .db $55,$6A,$AD,$55,$FF,$FF,$FF,$FF,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55


   .db $AA,$B5,$56,$AA,$55,$6A,$AD,$55,$AA,$B5,$56,$AA,$55,$6A,$AD,$55   


ttt_mat:


   .db 0,0,0


   .db 0,0,0


   .db 0,0,0


spr_X:


   .db %10000001


   .db %01000010


   .db %00100100


   .db %00011000


   .db %00011000


   .db %00100100


   .db %01000010


   .db %10000001


spr_O:


   .db %00111100


   .db %01000010


   .db %10000001


   .db %10000001


   .db %10000001


   .db %10000001


   .db %01000010


   .db %00111100


spr_blank:


   .db 0,0,0,0,0,0,0,0,0


.end


.end

It crashes when it runs EraseGray, I'm certain of it.

EraseGray] is a subroutine that is supposed to erase certain parts of the temporary graphics, because I wanted the spots that were taken to not be gray. It is designed to reset the bits in the temporary graphics that are to be turned off. The reason it involves 3 extra subroutines is because different bits need to be reset for each column. It also attempts to get the offset to the temporary data by factoring in cursorX and cursorY.

TTT_Gray:

TTT_Gray2:

Both are 32*32.
Could anyone help me debug it? I can't get it to work...

Pseudoprogrammer
Awesomesauce (Posts: 891)

10 Jun 2007 10:39:48 am

If you want an interesting tic tac toe game, not just the boring kind, check this out: http://www.puzzlesgames.co.uk/

KermMartian
Site Admin (Posts: 64060)

10 Jun 2007 11:24:24 am

Why are you including Ion routines instead of simply calling them? Did you change them at all? I'm trying to see if there's a problem in eraseGray right now.

Harrierfalcon
Advanced Member (Posts: 224)

10 Jun 2007 11:26:00 am

I'm working in nostub right now--it's just Ion compatible. This way, I can edit the routines to do whatever I want them to.

But other than that, I honestly don't know Neutral

KermMartian
Site Admin (Posts: 64060)

10 Jun 2007 11:28:46 am

In each of three loops, you pop bc then djnz, but you never repush bc. That means you'll be popping something you never pushed. Obviously you can't push bc before the djnz, so you'll have to figure out something else. See what I mean?

Harrierfalcon
Advanced Member (Posts: 224)

10 Jun 2007 11:33:01 am

Ahhh...I was jr'ing to the wrong label. Thanks Kerm!

EDIT: I've already gotten the offset, and I added 40 bytes to hl, which was originally pointing to ttt_temp1. Would I just add 88 to get the same offset to ttt_temp2? Both are 128 bytes, a 32*32 sprite.

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