[stella] Qb: Latest version v0.02

["Andrew Davie" <adavie@xxxxxxxxxxxxx>]

Many thanks to Manuel for the suggestions and optimisations on v0.01.
Attached is the latest version, v0.02.  I find it VERY touchy to code-size
changes, which push critical code over page boundaries, changing timing.
Difficult to work with.  Anyway, you can see the score/info displays up... a
nice shaded double-height 6-digit routine in both cases.  Source code is now
too big to reasonably post to the list - anyone who wants it, please write
me and I'll return-email it - for now, anyway.
One conceptual problem I have is that when you jump at the top of the
screen, your sprite disappears, as sprites are used for the high-score
routine.  I guess I could detect that, and switch off the score when you do
that... but it would look a bit odd.  Any suggestions?
As for speed, it is dog-slow for me, too, running Z26 under W2K... but it is
fast running on PCAE.  I have the speed at 'reasonable' under PCAE.  Can
anyone comment on the speed on a real machine?
As usual, *any* feedback much appreciated.
Thanks
A
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----- Original Message -----
From: "Manuel Polik" <manuel.polik@xxxxxxxxxxx>
To: <stella@xxxxxxxxxxx>
Sent: Wednesday, February 14, 2001 1:29 AM
Subject: Re: [stella] Qb: Latest version v0.01


> Andrew Davie wrote:
>
> > As always, any comments/improvements welcome.  I sure would like to know
> > that some of you are actually following the devlopment of this thing!
> > Cheers
>
> Cool! Looks as usual better every day, Andrew!
> Hehe, my Hiscore is 345400, try beating that! :-p
>
> One thought: Maybe it's a bit early for fine-tuning, but it plays very
> slow. When the sprite jumps from one block to another, you're
> half-asleep before it lands. (Ok, might be a problem of my system here.
> It's Windows 2K on 800 MHz and Z26 works way slower here, compared to my
> P133/W95 at home. Strange, isn't it?)
>
> Some minor things to improve I find in your code:
>
> - Initialisation:
>
> Replace:
>         lda #0 ;D1                 ; reflect / score
>         sta CTRLPF
>
>         lda #$FF
>         sta level
> with:
> dex
>         stx level
>
> (CTRLPF is already '0')
>
> --- bgcol1 & pfcol1 would do as well as equates, saving you one byte
> immediately and one byte where ever you access 'em.
>
> --- InitCubes
> Replace:
>         lda #0
>         sta TargetDisplay+8
>         sta TargetDisplay+9  ; SLIDING TARGET AREA
>
>         sta Grid
>         sta Grid+1
>         sta Grid+2
>         sta Grid+3
> with:
>         lda #0
> ldx #$5
> ClearTG sta TargetDisplay+8,x
> dex
> bpl ClearTG
>
> --- CreateTableaux
> Replace:
> CTab    jsr Random
>
>         tay
>         and #3
>         tax
>
>         tya
>         lsr
>         lsr
>         and #3
>         tay
> with:
> CTab    jsr Random
>         and #3
>         tax
> jsr Random
>         and #3
>         tay
>
> --- CreateTableaux
> Replace:
> CheckGrid
>
>         lda Grid,x
>         and TargetBit,y
>         beq EnterPosition
>
>         dey
>         bpl CheckGrid
>         ldy #3
>
>         dex
>         bpl CheckGrid
>         ldx #3
>         bne CheckGrid
> with:
> CheckGrid
>
>         lda Grid,x
>         and TargetBit,y
>         beq EnterPosition
> bne CTab
>
> --- InitCubes
> Replace:
>         lda PlayerCube
>         and #%11111000
>         ora IC_FedCubeIndex
>         sta PlayerCube
>
>         lda PlayerCube+1
>         and #%11111000
>         ora IC_FedCubeIndex
>         sta PlayerCube+1
>
>         ldx #0
>         jsr TieToCube                   ; tie player to it's cube
>         ldx #1
>         jsr TieToCube
> with:
> ldx #$01
> PCube   lda PlayerCube,x
>         and #%11111000
>         ora IC_FedCubeIndex
>         sta PlayerCube,x
>         jsr TieToCube
> dex
> bpl PCube
>
>
> Ok, I'm running out of time now... hope that frees some bytes for you...
> I'm scanning further through the code next time I've some free
> minutes...
> Hope it helps a bit
>
> Greetings,
> Manuel
>
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