-
; -WonderWorm--v0.9-
; by Matthew Shepcar
; 30th December 1998
-#include asm86.h
-#include ti86asm.inc
-#include ti86abs.inc
+; modified by Jonah Cohen 11-19-99
+
+#include "TI86.inc"
.org _asm_exec_ram
-
+
nop
jp Start
.dw 0,WormMsg
Start:
-
- call _runindicoff
+ ld (SpSave),sp
+ call _runIndicOff
+ call _flushAllMenus
call _clrLCD
- call BuildTrigTables
-
- ld hl,0FC00h
- ld de,GreyBuf
- ld bc,400h
- ldir
-
- ld hl,IHandler
- ld bc,IHandlerEnd-IHandler
- ld de,0BCBCh
- ldir
- ld hl,0BD00h
- ld (hl),d
- ld de,0BD01h
- ld a,d
- ld bc,256
+;build trig tables
+ ld hl,TrigPrecalc
+ ld de,SinCosTable
+ push de
+ ld bc,65
ldir
- ld i,a
- im 2
+ dec hl
+ ld b,63
+MirrorSineWave:
+ dec hl
+ ld a,(hl)
+ ld (de),a
+ inc de
+ djnz MirrorSineWave
+ pop hl
+ ld b,128+64
+NegativeSineWave:
+ xor a
+ sub (hl)
+ ld (de),a
+ inc hl
+ inc de
+ djnz NegativeSineWave
ld a,r
ld (Seed),a
push de
ld a,(hl)
inc hl
+ sub 128
+ ld (FieldWidth),a
+ ld a,(hl)
+ inc hl
sub 57
ld (FieldHeight),a
add a,57-5
add hl,hl
add hl,hl
add hl,hl
+ add hl,hl
ex de,hl
ld hl,ScrBuffer
push hl
push de
ld de,ScrBuffer+1
- ld bc,31
- ld (hl),-1
+ ld bc,63
+ ld (hl),%11111111
ldir
inc hl
- ld (hl),192
+ ld (hl),%11000000
inc hl
- ld b,14
+ ld b,31
ClearLine:
ld (hl),c
inc hl
djnz ClearLine
- ld (hl),3
+ push hl
+
+ ld a,(FieldWidth)
+ add a,126
+ push af
+ and %11111000
+ rra
+ rra
+ rra
+ ld l,a
+ ld h,0
+ add hl,de
+ pop af
+ and %00000111
+ ld b,a
+ ld c,0
+ ld a,%11000000
+ jr z,NoVertShift
+VertShift:
+ rra
+ rr c
+ djnz VertShift
+NoVertShift:
+ ld (hl),a
inc hl
+ ld (hl),c
+
ex de,hl
+ pop de
pop bc
ldir
pop hl
- ld c,32
+ ld c,64
ldir
+
pop hl
ld a,(hl)
NoLines:
push hl
- ld hl,ScrBuffer
- ld de,ScrBuffer+BufSize
- ld bc,BufSize
- ldir
-
ld hl,0
ld (_penCol),hl
ld hl,LivesMsg
call NewPea
- xor a
+ pop hl
+ pop bc
+ push bc
+ push hl
call DisplayField
ld hl,LevelMsg
ld a,7
- call DispMsg
+ push hl
+ ld h,a
+ ld l,4
+ ld (_curRow),hl
+ ld hl,0FDE0h
+ ld de,0FDE1h
+ ld (hl),-1
+ ld bc,0BFh
+ ldir
+ pop hl
+ set 3,(iy+5)
+ call _puts
ld a,(Level)
+ cp 10
+ jr c,LevelBelowTen
+ ld l,a
+ ld h,0
+ call _divHLby10
+ push af
+ ld a,l
+ add a,'0'
+ call _putc
+ pop af
+LevelBelowTen:
add a,'0'
call _putc
res 3,(iy+5)
dec a
jr nz,ReadyDelay
- ld hl,(HeadPos)
+ ld hl,(HeadPos) ;<====NEW
ld (TailPos),hl
pop hl
pop bc
ld de,0
GameLoop:
-
- ld a,c
- sub 29
- jr nc,NotMinScroll
- xor a
-NotMinScroll:
- cp 43
-FieldHeight =$-1
- jr c,NotMaxScroll
- ld a,(FieldHeight)
-NotMaxScroll:
call DisplayField
- ld a,5
+ ld a,2
Speed =$-1
+ or a
+ jr z,HeadPos-1
Delay:
halt
dec a
jr nz,Delay
- ld hl,0A000h
+ ld hl,WormPos
HeadPos =$-2
ld (hl),c
inc hl
ld (hl),b
inc hl
- res 4,h
+ res 2,h ;<====NEW
ld (HeadPos),hl
ld hl,SinCosTable
rra
rra
jr c,NotRight
+ push af
ld a,l
add a,8
ld l,a
- inc a
+ pop af
NotRight:
rra
jr c,NotLeft
sub l
inc a
cp 4
- jr nc,WormDead
+ jp nc,WormDead
push bc
call DrawPea
ld a,0
dec (hl)
jr nz,NotNextLevel
ld hl,Level
+ ld a,(hl)
inc (hl)
pop bc
pop de
pop hl
pop de
- jp StartLevel
+ cp NUM_LEVELS
+ jp nz,StartLevel
+ jr Exit
NotNextLevel:
ld a,(hl)
dec (hl)
jr nz,GrowWorm
inc (hl)
- ld hl,0A000h
+ ld hl,$b000
TailPos =$-2
ld c,(hl)
inc hl
ld b,(hl)
inc hl
- res 4,h
+ res 2,h ;<====NEW
ld (TailPos),hl
call ResPixel
in a,(1)
rla
jr c,NotPaused
- call _getky
-WaitUnpause:
+ ld bc,$0103
+ out (c),b
halt
- call _getky
- or a
- jr z,WaitUnpause
- ld a,128
+ ld b,11
+ out (c),b
NotPaused:
pop bc
pop de
rla
jp c,GameLoop
- push hl
+ jr Exit
+; push hl
WormDead:
pop de
pop hl
dec (hl)
pop hl
jp nz,NextLife
+Exit:
#if 0
ld a,(Eaten)
cp (hl)
jr c,NotNewHigh
ld (hl),a
- ld hl,Varname-1
+ ld hl,_asapvar
rst 20h
rst 10h
call 460Bh
ld (hl),a
NotNewHigh:
#endif
+ res 4,(iy+9)
+ ld sp,0
+SpSave = $-2
+ jp _clrWindow
- im 1
- ld a,03Ch
- out (0),a
- call _clrScrn
- call _homeup
- jp _getky
-
-NewPea:
- call Random
- ld a,h
- and 7Fh
- cp 77h
- jr nc,NewPea
- add a,3
- ld h,a
+NewPea: ;------------------------------procs ;<====NEW
+;random routine
+ ld hl,0
+ ld de,12345
+Seed =$-2
+ ld a,7921 & 255
+ ld bc,1000h+(7921/256)
+domult16:
+ add hl,hl
+ rla
+ rl c
+ jr nc,noadd16
+ add hl,de
+noadd16:
+ djnz domult16
+ inc hl
+ ld (Seed),hl ;seed=(seed*7921+1) MOD 65536
+ ld a,(FieldWidth)
+ add a,123
+ cp h
+ jr c,NewPea
+ inc h
+ inc h
ld a,(FieldHeight)
- add a,57-12
- ld b,a
- ld a,l
- and 7Fh
- cp b
- jr nc,NewPea
- add a,5
- ld l,a
+ add a,51
+ cp l
+ jr c,NewPea
+ inc l
+ inc l
ld (PeaY),hl
ld d,2
push hl
ld (hl),a
ret
-Random:
- ld hl,0
- ld de,12345
-Seed =$-2
- ld a,7921 & 255
- ld bc,1000h+(7921/256)
-domult16:
- add hl,hl
- rla
- rl c
- jr nc,noadd16
- add hl,de
-noadd16:
- djnz domult16
- inc hl
- ld (Seed),hl ;seed=(seed*7921+1) MOD 65536
- ld a,h
- ret
+;no random routine here ;<====NEW
-ResPixel:
+ResPixel: ;at bc
call FindPixel
cpl
- ld d,a
- and (hl)
- ld (hl),a
- ld a,d
- ld de,BufSize
- add hl,de
and (hl)
- ld (hl),a
+ ld (hl),a
ret
-SetPixel:
- push bc
- push af
- push af
+SetPixel: ;at bc
call FindPixel
- pop de
- ld e,a
- rr d
- jr c,SetGrey1
- cpl
- and (hl)
- ld (hl),a
-SetGrey1:
- or (hl)
- ld (hl),a
- ld bc,BufSize
- add hl,bc
- ld a,e
- rr d
- jr c,SetGrey2
- cpl
- and (hl)
- ld (hl),a
-SetGrey2:
- or (hl)
- ld (hl),a
- pop af
- pop bc
+ or (hl)
+ ld (hl),a
ret
-CheckPixel:
+CheckPixel: ;at bc in d
push de
call FindPixel
- push af
and (hl)
- ld de,BufSize
- add hl,de
- ld e,a
- pop af
- and (hl)
- or e
pop de
ret z
dec d
ret
-FindPixel:
+FindPixel: ;bc to ahl + de gone ;<====NEW
push bc
ld a,b
and 7
ld e,a
ld d,offsets_table/256
ld h,0
- ld a,c
- add a,a
- add a,a
- rl h
- add a,a
- rl h
- add a,a
- rl h
- srl b
- srl b
- srl b
- or b
+ ld l,c
+ add hl,hl
+ add hl,hl
+ add hl,hl
+ add hl,hl
+ add hl,hl
+ ld a,b
+ and %11111000
+ rra
+ rra
+ rra
+ or l
ld l,a
ld a,(de)
ld de,ScrBuffer
add hl,de
ld (Score),hl
PutScore:
- ld hl,-1
- ld (_curRow),hl
- ld a,63
- ld (_penCol),a
- ld hl,(Score)
- xor a
- call 4A33h
- dec hl
+ ld de,_penCol
+ ld a,79
+ ld (de),a
ld b,5
DoPutScore:
- ld a,(hl)
- inc hl
- cp 32
- jr nz,NotZeroDigit
- ld a,'0'
-NotZeroDigit:
- call _vputmap
+ push bc
+ push de
+ call _divHLby10
+ call PutDigit
+ pop de
+ ld a,(de)
+ sub 8
+ ld (de),a
+ pop bc
djnz DoPutScore
ret
PutNum:
ld l,a
ld h,0
- call UNPACK_HL
+ call _divHLby10
push af
ld a,l
call PutDigit
offsets_table:
.db 128,64,32,16,8,4,2,1
-IHandler:
- exx
- ex af,af'
- in a,(3)
- bit 1,a
- jr z,notvbl
- ld hl,GreyCounter
- inc (hl)
- ld a,(hl)
- cp 3
- ld a,3Ch
- jr nz,notpage1
- ld (hl),0
- ld a,(GreyBuf/256)-0C0h
-notpage1:
- out (0),a
-notvbl:
- jp 3Ah
-IHandlerEnd:
-GreyCounter .db 0
-
-DisplayField:
+DisplayField: ;<====NEW
+ ld a,c
+ sub 29
+ jr nc,NotMinYScroll
+ xor a
+NotMinYScroll:
+ cp 43
+FieldHeight =$-1
+ jr c,NotMaxYScroll
+ ld a,(FieldHeight)
+NotMaxYScroll:
ld l,a
ld h,0
add hl,hl
add hl,hl
add hl,hl
add hl,hl
+ add hl,hl
push bc
push de
ld de,ScrBuffer
add hl,de
- ld de,0FC70h
- ld bc,00390h
+ ld a,b
+ sub 64
+ jr nc,NotMinXScroll
+ xor a
+NotMinXScroll:
+ cp 128
+FieldWidth = $-1
+ jr c,NotMaxXScroll
+ ld a,(FieldWidth)
+NotMaxXScroll:
+ push af
+ and %11111000
+ rra
+ rra
+ rra
+ ld c,a
+ ld b,0
+ ld de,DispBuffer
+ pop af
+ and %00000111
+ push af
+ cp 6
+ jr c,CopyScreen
+ inc c
+CopyScreen:
+ add hl,bc
+ ld b,57
+CopyScreenLoop:
+ push bc
+ ld bc,16
ldir
- ld de,BufSize-390h
- add hl,de
- ld de,GreyBuf+70h
- ld bc,00390h
+ ld c,16
+ add hl,bc
+ pop bc
+ djnz CopyScreenLoop
+ pop af
+ ld c,$b7 ;or a
+Bit0:
+ jr nz,Bit1
+ halt
+ halt
+ jr AfterShiftDelay
+Bit1:
+ dec a
+ jr nz,Bit2
+ call ShiftRight1
+ jr AfterShiftDelay
+Bit2:
+ dec a
+ jr nz,Bit3
+ ld a,2
+ call ShiftRight
+ jr AfterShiftDelay
+Bit3:
+ dec a
+ jr nz,Bit4
+ call Chunk
+ call ShiftLeft1
+ jr AfterShift
+Bit4:
+ dec a
+ jr nz,Bit5
+ call Chunk
+ jr AfterShiftDelay
+Bit5:
+ dec a
+ jr nz,Bit6
+ call Chunk
+ call ShiftRight1
+ jr AfterShift
+Bit6:
+ dec a
+ jr nz,Bit7
+ ld a,2
+ call ShiftLeft
+ jr AfterShift
+Bit7:
+ call ShiftLeft
+AfterShiftDelay:
+ halt
+AfterShift:
+ ld hl,DispBuffer
+ ld de,$fc00+$70
+ ld bc,1024-$70
ldir
pop de
pop bc
ret
-DispMsg:
+ShiftRight1: ;<====NEW
+ ld a,1
+ShiftRight:
+ ld (ShiftRightCounter),a
+ ld a,c
+ ld (ShiftRightChunk),a
+ ld c,16
+ add hl,bc
+ ld b,57
+ShiftRightLoop:
+ push bc
+ ld bc,-32
+ add hl,bc
+ ex de,hl
+ ld a,(de)
+ShiftRightChunk:
+ or a
+ call c,_SHLACC
+ ld c,0
+ShiftRightCounter = $-1
+ShiftRowsLeft:
push hl
- ld h,a
- ld l,4
- ld (_curRow),hl
- ld hl,0FDE0h
- ld de,0FDE1h
- ld (hl),-1
- ld bc,0BFh
- ldir
+ rla
+ ld b,16
+ShiftRowLeft:
+ dec hl
+ rl (hl)
+ djnz ShiftRowLeft
pop hl
- set 3,(iy+5)
- jp _puts
+ dec c
+ jr nz,ShiftRowsLeft
+ ld bc,-16
+ add hl,bc
+ ex de,hl
+ pop bc
+ djnz ShiftRightLoop
+ ret
+ShiftLeft1: ;<====NEW
+ ld a,1
+ShiftLeft:
+ ld (ShiftLeftCounter),a
+ ld a,c
+ ld (ShiftLeftChunk),a
+ rla
+ jr nc,ShiftLeftSameByte
+ dec hl
+ShiftLeftSameByte:
+ ex de,hl
+ ld bc,-16
+ add hl,bc
+ ex de,hl
+ ld b,57
+ShiftLeftLoop:
+ push bc
+ ld bc,-32
+ add hl,bc
+ ex de,hl
+ ld a,(de)
+ShiftLeftChunk:
+ or a
+ call c,_SHRACC
+ ld c,0
+ShiftLeftCounter = $-1
+ShiftRowsRight:
+ push hl
+ rra
+ ld b,16
+ShiftRowRight:
+ rr (hl)
+ inc hl
+ djnz ShiftRowRight
+ pop hl
+ dec c
+ jr nz,ShiftRowsRight
+ ld bc,-16
+ add hl,bc
+ ex de,hl
+ pop bc
+ djnz ShiftLeftLoop
+ ret
+
+Chunk: ;<====NEW
+ push hl
+ push de
+ ld c,16
+ add hl,bc
+ ld b,57
+ChunkScreen:
+ push bc
+ ld bc,-32
+ add hl,bc
+ ex de,hl
+ ld a,(de)
+ call _SHRACC
+ ld b,16
+ChunkRow:
+ dec hl
+ rld
+ djnz ChunkRow
+ ex de,hl
+ pop bc
+ djnz ChunkScreen
+ pop de
+ pop hl
+ ld c,$37 ;scf
+ ret
+
+
+NUM_LEVELS = 9
Levels:
- .db 5,7 ;5 peas, speed 7
+
+ .db 5,3 ;5 peas, speed 5
.db 64,4,0 ;x,y,d
- .db 57 ;field height
+ .db 0,0 ;field width, height
.db 0 ;no additional lines
- .db 8,6
- .db 4,14,40h
- .db 57
+ .db 8,4
+ .db 4,14,$40
+ .db 128,57
.db 1
.db 28,28,100,28
- .db 99,5
- .db 4,14,40h
- .db 100
+ .db 9,4
+ .db 4,8,$40
+ .db 128,57
.db 2
- .db 28,28,28,72
- .db 100,28,100,72
+ .db 28,14,100,14
+ .db 28,41,100,41
-#include trigtab.asm
-#include line.asm
+ .db 9,3
+ .db 4,8,$40
+ .db 128,80
+ .db 2
+ .db 64,14,64,66
+ .db 20,40,108,40
+
+ .db 10,3
+ .db 4,8,$40
+ .db 128,90
+ .db 3
+ .db 18,20,18,70
+ .db 110,20,110,70
+ .db 18,45,110,45
+
+ .db 7,3
+ .db 64,4,0
+ .db 128,86
+ .db 6
+ .db 34,13,56,35
+ .db 34,71,56,49
+ .db 72,35,94,13
+ .db 72,49,94,71
+ .db 16,20,16,64
+ .db 110,20,110,64
+
+ .db 9,2
+ .db 4,10,$40
+ .db 128,82
+ .db 3
+ .db 0,20,74,20
+ .db 54,40,128,40
+ .db 0,60,74,60
+
+ .db 12,2
+ .db 64,4,0
+ .db 128,90
+ .db 6
+ .db 20,16,54,16
+ .db 74,16,110,16
+ .db 20,16,20,72
+ .db 110,16,110,72
+ .db 20,72,54,72
+ .db 74,72,110,72
+
+ .db 8,2
+ .db 72,52,$c0
+ .db 128,128
+ .db 13
+ .db 34,56,56,34
+ .db 34,72,56,94
+ .db 72,34,94,56
+ .db 72,94,94,72
+ .db 46,64,80,64
+ .db 22,11,22,33
+ .db 11,22,33,22
+ .db 22,95,22,117
+ .db 11,106,33,106
+ .db 103,11,103,33
+ .db 91,22,115,22
+ .db 103,95,103,117
+ .db 91,106,115,106
+
+
+
+#include "trigtab.asm"
+#include "line.asm"
WormMsg .db "Wonderworm!",0
LevelMsg .db "Level ",0
ScoreMsg .db "Score: ",0
LeftMsg .db "Food: ",0
HiScore .db 0
-Varname .db 4,"worm"
Left =$
Lives =$+1
Level =$+2
Score =$+3
+DispBuffer =$+5
-SinCosTable =09E00h
-ScrBuffer =8200h
-BufSize =0A00h
-GreyBuf =0F400h
+ScrBuffer =$8200 ;32x256 bytes
+SinCosTable =$a200
+WormPos = $b000
.end
git.shiar.nl / wormy.git / blobdiff