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added fx.hgr.spiral
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4am
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@ -1 +1 @@
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#
# slideshow of favorite title screens
#
MR.ROBOT
NIBBLER
SNAKE.BYTE
DAVIDS.MAGIC
CRAZY.MAZY
SPYS.DEMISE
WAVY.NAVY
DIG.DUG
PAPERBOY
TUBEWAY
PRINCEUNP
LOST.TOMB
MOON.PATROL
DROL
HERO
MONTEZUMA
DUNG.BEETLES
SWASHBUCKLER
POOYAN
TAPPER
GOONIES
PLASMANIA
PITFALL.II
ALCAZAR
SABOTAGE
FROGGER
GORGON
CONAN
NIGHT.MISSION
DINO.EGGS
FALCONS
BRUCE.LEE
BCS.QUEST
JOUST
[eof]
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#
# slideshow of favorite title screens
#
DUNG.BEETLES
MR.ROBOT
NIBBLER
SNAKE.BYTE
DAVIDS.MAGIC
CRAZY.MAZY
SPYS.DEMISE
WAVY.NAVY
DIG.DUG
PAPERBOY
TUBEWAY
PRINCEUNP
LOST.TOMB
MOON.PATROL
DROL
HERO
MONTEZUMA
SWASHBUCKLER
POOYAN
TAPPER
GOONIES
PLASMANIA
PITFALL.II
ALCAZAR
SABOTAGE
FROGGER
GORGON
CONAN
NIGHT.MISSION
DINO.EGGS
FALCONS
BRUCE.LEE
BCS.QUEST
JOUST
[eof]
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@ -212,7 +212,7 @@ HGRLoad
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jsr AddToPath
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jsr LoadFile
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!word gPathname
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jsr DiagonalHGR;InterlockingVerticalHGR;FizzleHGR;InterlockingHorizontalHGR;
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jsr SpiralHGR;DiagonalHGR;InterlockingVerticalHGR;FizzleHGR;InterlockingHorizontalHGR;
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jmp WaitOnScreenshot
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DHGRLoad
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@ -325,7 +325,9 @@ kAttractModeConfFile
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!source "src/okvs.a"
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!source "src/parse.common.a"
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!source "src/parse.games.a"
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!source "src/fx.hgr.common.a"
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!source "src/fx.hgr.fizzle.a"
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!source "src/fx.hgr.spiral.a"
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!source "src/fx.hgr.diagonal.a"
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!source "src/fx.hgr.interlockingvertical.a"
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!source "src/fx.hgr.interlockinghorizontal.a"
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68
src/fx.hgr.common.a
Normal file
68
src/fx.hgr.common.a
Normal file
@ -0,0 +1,68 @@
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HGRCalc
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; in: A = HGR row (0x00..0xBF)
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; out: A/X clobbered
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; Y preserved
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; ($26) points to first byte of given HGR row on hi-res page 1
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; ($3C) points to same byte on hi-res page 2
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; based on 'Woz Recodes Hi-Res Address Calculations'
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; Apple Assembly Line vol. 7 issue 3 (December 1986)
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; http://www.txbobsc.com/aal/1986/aal8612.html#a9
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asl
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tax
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and #$F0
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bpl @calc1
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ora #$05
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@calc1 bcc @calc2
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ora #$0A
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@calc2 asl
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asl
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sta $26
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txa
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and #$0E
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adc #$10
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asl $26
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rol
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sta $27
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eor #$60
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sta $3d
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lda $26
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sta $3c
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rts
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HGRBlockCopy
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; in: A = HGR row / 8 (0x00..0x17)
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; Y = HGR column (0x00..0x27)
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; out: all flags and registers clobbered
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sty @loop+1
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asl
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asl
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asl
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jsr HGRCalc
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ldx #$08
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@loop ldy #$FD ; modified at runtime
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lda ($3c),y
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sta ($26),y
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lda $27
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clc
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adc #$04
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sta $27
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eor #$60
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sta $3d
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dex
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bne @loop
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rts
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WaitForKeyWithTimeout
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; in: A = timeout length (like standard $FCA8 wait routine)
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; out: A clobbered
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; X/Y preserved
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sec
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@wait1 pha
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@wait2 sbc #1
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bne @wait2
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pla
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bit $C000
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bmi @exit
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sbc #1
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bne @wait1
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@exit rts
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@ -4,7 +4,11 @@ DiagonalHGR
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lda #$17
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sta $FA
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sta $FC
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@loop jsr @block
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@loop lda $FA
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bpl +
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lda #$00
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+ ldy $FB
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jsr HGRBlockCopy
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dec $FB
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inc $FA
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lda $FB
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@ -31,24 +35,3 @@ DiagonalHGR
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sta $FB
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bpl @loop
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@exit rts
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@block lda $FA
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bpl +
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lda #$00
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+ asl
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asl
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asl
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jsr HGRCalc
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ldx #$08
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- ldy $FB
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lda ($3c),y
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sta ($26),y
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lda $27
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clc
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adc #$04
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sta $27
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eor #$60
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sta $3d
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dex
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bne -
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rts
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@ -34,7 +34,7 @@ InterlockingHorizontalHGR
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dey
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bpl @innerloop
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lda #$40
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jsr Wait
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jsr WaitForKeyWithTimeout
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lda $C000
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bmi @exit
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inc index2
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@ -1,3 +1,4 @@
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!zone {
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row1 = $fe
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row2 = $ff
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@ -25,46 +26,11 @@ InterlockingVerticalHGR
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dey
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bpl -
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lda #$30
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jsr Wait
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jsr WaitForKeyWithTimeout
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lda $C000
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bmi @exit
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inc row1
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dec row2
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bpl @loop
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@exit rts
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HGRCalc
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asl
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tax
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and #$F0
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bpl @calc1
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ora #$05
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@calc1 bcc @calc2
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ora #$0A
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@calc2 asl
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asl
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sta $26
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txa
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and #$0E
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adc #$10
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asl $26
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rol
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sta $27
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eor #$60
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sta $3d
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lda $26
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sta $3c
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rts
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Wait
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sec
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@wait1 pha
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@wait2 sbc #1
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bne @wait2
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pla
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bit $C000
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bmi @exitwait
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sbc #1
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bne @wait1
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@exitwait
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rts
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}
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69
src/fx.hgr.spiral.a
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69
src/fx.hgr.spiral.a
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@ -0,0 +1,69 @@
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SpiralHGR
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lda #$27
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sta $FB
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lda #$17
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sta $FD
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lda #$00
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sta $FA
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sta $FC
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@outerloop
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lda $FC
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sta $FE
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lda $FA
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sta $FF
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lda #$00
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sta $F9
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@loop lda $FE
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ldy $FF
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jsr HGRBlockCopy
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lda #$1F
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jsr WaitForKeyWithTimeout
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bmi @exit
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ldx $F9
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bne @a
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inc $FF
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lda $FB
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cmp $FF
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bcs @loop
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inc $FC
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inc $F9
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lda $FC
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sta $FE
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lda $FB
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sta $FF
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@a dex
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bne @b
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inc $FE
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lda $FD
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cmp $FE
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bcs @loop
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dec $FB
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inc $F9
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lda $FD
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sta $FE
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lda $FB
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sta $FF
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@b dex
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bne @c
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dec $FF
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lda $FF
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cmp $FA
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bpl @loop
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lda $FD
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cmp $FC
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beq @exit
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dec $FD
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inc $F9
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lda $FD
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sta $FE
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lda $FA
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sta $FF
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@c dex
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bne @loop
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dec $FE
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lda $FE
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cmp $FC
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bpl @loop
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inc $FA
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bne @outerloop ; always branches
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@exit rts
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