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Worms.forth
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Worms.forth
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\ WORMS? COPYRIGHT (C) 1983 BY DAVID S. MAYNARD
( MASTER OCT. 9, 1983. COMMODORE 64 FINAL ) HEX
C000 CONSTANT HIMEM HIMEM 1000 - CONSTANT APMAREA
0 VARIABLE FNCUR 0 VARIABLE CHCUR
CODE (?CH)
C6 LDA, 0= NOT IF, 277 LDA, THEN, PUSH0A JMP, END-CODE
HERE 0 C, 8 C, 4 C, 2 C, 1 C, 0 C, 84 - CONSTANT CV84-
: ?CH BEGIN (?CH)
DUP IF DUP 84 MAX 89 MIN CV84- + C@
-DUP IF FNCUR ! ELSE DUP CHCUR ! THEN
FLKBD THEN
DROP (?CH) 0= UNTIL CHCUR @ ;
: KEY BEGIN CHCUR @ 0= WHILE ?CH DROP REPEAT
CHCUR @ 0 CHCUR ! ;
: =KEY SWAP OVER = IF KEY = ELSE DROP 0 THEN ;
: ?TERMINAL ?CH DROP FNCUR @ 0 FNCUR ! DUP 8 = IF QUIT THEN ; ;S
( WORM GAME START ) HEX
: <-> CONSTANT ; : < U< ;
: VAR VARIABLE ;
14 <-> #H 16 <-> #V 12 <-> #DH 12 <-> #DV 1 <-> H0 1 <-> V0
#DH 2 / <-> STX
#DV 2 / <-> STY
0 <-> W# 0 <-> 2*W#
0 VAR QFLG
: STOP ?TERMINAL QFLG @ OR
DUP QFLG ! ;
: CONT STOP 0= ;
400 <-> C64SCR
( WORM GAME CONSTANTS )
4 <-> MAX#W #H 1 - <-> #H-1
#V 1 - <-> #V-1 FF <-> UNDFMOVE
#DH 1 - <-> #DH-1
#DV 1 - <-> #DV-1
F1 <-> GETNEW# F2 <-> DOAI# F3 <-> DIE#
6 <-> NOMOVE
3 VAR DEN ( DENSITY )
0 VAR #WORMS
0 VAR WORMV 1 VAR GPR
C VAR MXLUM 07 VAR STO
1 <-> PWDTH
0 VAR HCSHI
0 VAR LOCK ( INTERLOCK FOR FORTH VBI ! IN UPDMAP )
( LOCKED IN UPDMAP CHECKED IN CDEST2 )
( WORM GAME CONSTANTS CONT. ATARI HDW )
( FIRST 1 + 800 / 800 * 800 - )
( 02E5 @ C1F - ) APMAREA \ DUP <-> PMA
200 - DUP <-> WCHSET ( FITS! )
#H #V * - <-> WDATA
( D40A <-> WSYNC ) E4 <-> MAXPOT
\ 022F <-> DMACTL D01D <-> GRACTL
\ D407 <-> PMBASE
\ 2C8 <-> COLBK 2C4 <-> COLPF0
\ 2C5 <-> COLPF1 2C6 <-> COLPF2
\ 2C7 <-> COLPF3 2C0 <-> COLPM0
\ 2C1 <-> COLPM1 2C2 <-> COLPM2
\ 2C3 <-> COLPM3 26F <-> GPRIOR
\ D300 <-> PORTA 0270 <-> POT0
\ D40E <-> NMIEN ;S
;S
( MOVE COUNT DOWN TIMERS )
\ D201 <-> AUDC D200 <-> AUDF
\ D208 <-> AUDCTL 1 VAR VBION
\ HERE
\ 0 , 0 , 0 , 0 ,
\ <-> FRQT ( FREQ. TABLE )
HERE
0 , 0 , 0 , 0 ,
<-> CDT ( COUNT DOWN TIMERS )
CODE DECCDT ( DECREMENT CDT )
0 # LDA,
CDT ,X CMP, 0= NOT
IF, CDT ,X DEC, THEN,
RTS, END-CODE
;S
( MAP VBI TABLES AND CONTS )
\ HERE
\ 7 , 7 , 7 , 7 ,
\ <-> CDT ( MOVE CDTIMERS )
HERE
0 , 0 , 0 , 0 ,
<-> MAPCDT ( MAP CD TIMER )
HERE
0 , 0 , 0 , 0 ,
<-> MAPMOVE ( MOVE ARRY )
CODE DECMAP ( DECREMENT CDT )
0 # LDA,
MAPCDT ,X CMP, 0= NOT
IF, MAPCDT ,X DEC, THEN,
RTS, END-CODE
;S
;S ( INTERRUPT ROUTINES UPDHS)
0 VAR HPSHAD 4 ALLOT
CODE UPDHS ( UPD HRZ POS )
HPSHAD LDA, D000 STA,
HPSHAD 1 + LDA, D001 STA,
HPSHAD 2 + LDA, D002 STA,
HPSHAD 3 + LDA, D003 STA,
RTS, END-CODE
( : CTABLE <BUILDS !CSP 3 HERE )
( 0 , DOES> 2+ ; )
( : ENDTAB HERE OVER - 2 - SWAP ! )
( 3 ?PAIRS ?CSP ; )
( : TAB# 2 - @ ; )
( : WTABLE <BUILDS !CSP 3 HERE )
( 0 , DOES> 2+ ; )
;S
;S ( INTERRUPT ROUTINES SETVOL )
HERE
A5 C, A7 C, A6 C, A6 C, A5 C, A5 C, A5 C, A4 C,
A4 C, A3 C, A2 C, A1 C, A0 C, A0 C, A0 C, A0 C,
A8 C, A7 C, A6 C, A6 C, A5 C, A4 C, A3 C, A3 C,
A4 C, A3 C, A2 C, A1 C, A0 C, A0 C, A0 C, A0 C,
A6 C, A8 C, A7 C, A6 C, A5 C, A4 C, A3 C, A2 C,
A2 C, A1 C, A0 C, A0 C, A0 C, A0 C, A0 C, A0 C,
A6 C, A8 C, A6 C, A4 C, A3 C, A2 C, A1 C, A0 C,
A0 C, A0 C, A0 C, A0 C, A0 C, A0 C, A0 C, A0 C,
<-> ENV
;S
;S ( PMXTAB SETVOL )
CODE SETVOL ( SETVOLUME )
CDT ,X LDA, 0= IF, 0 # LDA,
AUDC ,X STA, FRQT ,X STA,
ELSE, STO LDA, SEC,
CDT ,X SBC, F # AND, F8 STA, TXA,
.A ASL, .A ASL, .A ASL, CLC, F8 ADC, CLC,
TAY, ENV ,Y LDA,
( F # AND, A0 # ORA, )
AUDC ,X STA,
( FRQT ,X LDA, AUDF ,X STA, )
( 0 # LDA, AUDCTL STA, )
THEN, CLC, RTS, END-CODE ;S
CTABLE PMXTAB 3C C, 64 C, 8C C, B4 C,
ENDTAB
;S
;S ( INTERRUPT DAMPPOT )
0 VAR CPOT 4 ALLOT
CODE DAMPPOT ( DAMP POT )
CPOT ,X LDA, SEC,
POT0 ,X CMP,
CS IF, SEC, POT0 ,X SBC,
.A LSR, .A LSR, SEC,
FF # EOR, CLC, CPOT ,X ADC,
CPOT ,X STA, ELSE,
POT0 ,X LDA, SEC,
CPOT ,X SBC, .A LSR, .A LSR, .A LSR,
CLC, CPOT ,X ADC,
CPOT ,X STA,
THEN,
CLC, RTS, END-CODE
;S
;S ( INTERRUPT ROUTINES RPOTS )
0 VAR WPOT 2 ALLOT 0 VAR PSCAN
( CODE RPOT ( READ POT )
( ' DAMPPOT JSR, )
( E6 # LDA, SEC, CPOT ,X SBC, )
( .A LSR, .A LSR, .A LSR, )
( 7 # AND, 6 # CMP, BCS, )
( IF, 5 # LDA, THEN, )
( WPOT ,X STA, CLC, RTS, END-CODE )
CODE RPOTS ( READ POTS )
PSCAN LDA, 0= NOT IF,
0 # LDX, BEGIN,
' DAMPPOT JSR,
INX, 4 # CPX, 0=
UNTIL, CLC, THEN, RTS, END-CODE
;S
( WORM PRIMITIVES .XPOS ETC )
CODE .XPOS ' C@ JMP, END-CODE
CODE SET1 1 # LDA, SETUP JSR, RTS, END-CODE
CODE .YPOS ' SET1 JSR, 01 # LDY, N )Y LDA, PUSH0A JMP, END-CODE
CODE N)Y@ N )Y LDA, PHA, INY, N )Y LDA, PUSH JMP, END-CODE
CODE .LOC ' SET1 JSR, 02 # LDY, ' N)Y@ JMP, END-CODE
CODE .#MOVES ' SET1 JSR, 04 # LDY, ' N)Y@ JMP, END-CODE
CODE .STATUS ' SET1 JSR, 06 # LDY, ' .YPOS 5 + JMP, END-CODE
CODE .WRM# ' SET1 JSR, 07 # LDY, ' .YPOS 5 + JMP, END-CODE
CODE .MOVE 0B # LDA, ' A0+ JSR, BOT LDA, BOT 1+ LDY, INX, INX,
' AY+ JSR, ' C@ JMP, END-CODE
CODE +C! BOT LDA, INX, INX, ' A0+ JSR, ' C! JMP, END-CODE
: !XPOS ( WORM XPOS ) SWAP C! ;
: !YPOS SWAP 1+ C! ;
: !LOC SWAP 2+ ! ;
: !#MOVES SWAP 4 + ! ; ;S
( WORM PRIMITIVES CONT )
CODE .HPOS ' SET1 JSR, 08 # LDY, ' .YPOS 5 + JMP, END-CODE
: !HPOS ( WORM HPOS )
SWAP 8 +C! ;
CODE .VPOS ' SET1 JSR, 09 # LDY, ' .YPOS 5 + JMP, END-CODE
: !VPOS SWAP 9 +C! ;
CODE .CRIX ' SET1 JSR, 0A # LDY, ' .YPOS 5 + JMP, END-CODE
: !CRIX SWAP A +C! ;
: .TMO 4C + @ ;
: !TMO SWAP 4C + ! ;
;S
( #BITS WAIT )
\ : ENDIF [COMPILE] THEN ; IMMEDIATE
: #BITS ( BYTE -> #BITS )
0 OVER 1 AND IF 1+ ENDIF
OVER 2 AND IF 1+ ENDIF
OVER 4 AND IF 1+ ENDIF
OVER 8 AND IF 1+ ENDIF
OVER 10 AND IF 1+ ENDIF
OVER 20 AND IF 1+ ENDIF SWAP
DROP ;
: WAIT ( TICKS -> ) JIFFYS ;
\ DECIMAL 89 92 HEX THRU DECIMAL 138 140 HEX THRU
\ 0 220 ! FF 22E C! 1 MAX
\ 220 ! BEGIN 22E C@ 0= UNTIL
\ ;
;S
( WORM PRIMITIVES CNT WAITTAB )
: !STATUS SWAP 6 + C! ;
: !WORM# SWAP 7 + C! ;
: !MOVE ( WORM N MOVE )
SWAP ROT B + + C! ;
: .VAL .LOC C@ ;
: !VAL ( W VAL ) 2DUP SWAP .LOC C! 64!VAL ;
: [.VAL] .VAL 3F AND ; \ MASK OFF COLOR
( : CWAITTAB <BUILDS )
( 2 C, 2 C, 2 C, 2 C, 2 C, )
( 2 C, 2 C, DOES> ; )
( CWAITTAB WAITTAB )
;S
( WORM PRIMITIVES CONT )
: .KIND 4B + C@ ;
: !KIND SWAP 4B + C! ;
: .SCORE 4C + @ ;
: !SCORE SWAP 4C + ! ;
: .NAME 4E + ;
\ : 2* DUP + ; EAFORTH 2* IS FASTER
: 3* DUP 2* + ;
: 4* 2* 2* ;
: 8* 4* 2* ; ( : 28* DUP 4* + 8* ; )
D3 <-> COLCRS D6 <-> ROWCRS
: X! COLCRS C! ; : X@ COLCRS @ ;
: Y! DUP ROWCRS C! 28* C64SCR + D1 ! ; : Y@ ROWCRS C@ ;
: XY! Y! X! ; : ^ 1 0 XY! ;
: P" 0 14 XY! 1 286 C! ( WHITE ) ; ;S
;S
( WORM TABLE BUILDERS )
HERE
3 C, 4 C, 5 C, 0 C, 1 C, 2 C,
<-> NMOVE
HERE
1 , 0 , -1 , -1 , -1 , 0 ,
<-> XINCE
HERE
1 , 1 , 0 , -1 , 0 , 1 ,
<-> XINCO
HERE
0 , 1 , 1 , 0 , -1 , -1 ,
<-> YINC
;S
( ZERO PAGE DEFS )
0A <-> ZF 0C <-> ZT 0E <-> ZM
04 <-> ZA 06 <-> ZB 08 <-> ZC
;S
HERE 0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 3 C, C0 C, 00 C,
3 C, C0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
F C, F0 C, 00 C, F C, F0 C, 00 C,
F C, F0 C, 00 C, F C, F0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 3F C, FC C, 00 C,
3F C, FC C, 00 C, 3F C, FC C, 00 C,
3F C, FC C, 00 C, 3F C, FC C, 00 C,
3F C, FC C, 00 C, 0 C, 0 C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FC C, 3F C, 00 C,
FC C, 3F C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
F0 C, F C, 00 C, F0 C, F C, 00 C,
F0 C, F C, 00 C, F0 C, F C, 00 C,
FF C, FF C, 00 C, FF C, FF C, 00 C,
FF C, FF C, 00 C, C0 C, 3 C, 00 C,
C0 C, 3 C, 00 C, C0 C, 3 C, 00 C,
C0 C, 3 C, 00 C, C0 C, 3 C, 00 C,
C0 C, 3 C, 00 C, FF C, FF C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C,
0 C, 0 C, 00 C, 0 C, 0 C, 00 C, <-> MAPMASK
( ANONB CR*24 )
0 VAR ANONB ( ANIMATION ON )
: ANON 1 ANONB ! ;
HERE CRMAP 00 + , CRMAP 18 + , CRMAP 30 + ,
CRMAP 48 + , CRMAP 60 + , CRMAP 78 + ,
CRMAP 90 + , CRMAP A8 + ,
<-> CR*24
( INTERRUPT CRMAP ROUTINES )
CRMAP VAR CRMADDR
CODE CSOURCE ( FIND ZF ADDR )
MAPMOVE ,X LDA,
.A ASL, TAY,
CR*24 ,Y LDA, ZF STA, INY,
CR*24 ,Y LDA, ZF 1+ STA, INY,
RTS, END-CODE
: GCMD WCHSET 3 + @ IF 0 WCHSET 3 + C! ELSE
8 WCHSET 3 + C! THEN ;
HERE MAPMASK 00 + , MAPMASK 18 + , MAPMASK 30 + ,
MAPMASK 48 + , MAPMASK 60 + , MAPMASK 78 + ,
MAPMASK 90 + , MAPMASK A8 + , <-> MM*24 ;S
( CDEST CCANDM VBISMASK VBIMASKTAB )
MAPMASK VAR MMADDR 0 VAR VBISMASK 1 VAR VBIMAPMASK
HERE ( PAIRS: MASKVAL , STOVAL )
0 C, 2 C, 0 C, 04 C, 0 C, 06 C,
0 C, 8 C, 0 C, 0C C, 0 C, 10 C,
1 C, 10 C, 3 C, C C, 7 C, 10 C, F C, 10 C, <-> VBIMASKT
CODE CDEST2
SPMEM ,X LDA, ZT STA,
SPMEM 1+ ,X LDA, ZT 1+ STA,
RTS, END-CODE
CODE CANDM ( AND MASK ADDR )
8 # LDA, SEC, MAPCDT ,X SBC,
.A ASL, TAY,
MM*24 ,Y LDA, ZM STA, INY,
MM*24 ,Y LDA, ZM 1+ STA, INY,
CLC, RTS, END-CODE ;S
( INTRPT CODE CHAR ANIMATION )
CRMAP 7 8 * + <-> SRCBASE 14 <-> CLKLO
WCHSET 3F 8 * + <-> DESTBAS
: ANOFF 0 ANONB ! ; ;S 8 0 DO
SRCBASE I + C@ DESTBAS I +
C! LOOP ;
;S CODE ANIM
ANONB LDA, 0= NOT IF, CLKLO LDA, 3 # AND, 0= IF,
CLKLO LDA, 1C # AND,
.A ASL, TAY,
7 # LDX, BEGIN,
SRCBASE ,X LDA,
MAPMASK ,Y AND, DESTBAS ,X
STA, DEX, INY, FF # CPX,
0= UNTIL, THEN,
THEN, CLC, RTS, END-CODE ;S
( WRTP )
CODE WRTP ( WRITE PLAYERS ) LOCK LDA, 0= IF,
17 # LDY, BEGIN,
ZF )Y LDA, ZM )Y AND,
ZT )Y STA,
DEY, FF # CPY, 0=
UNTIL, THEN, CLC, RTS, END-CODE ;S
( INTERRUPT ROUTINES VBI )
CODE VBI ( VERTICAL BLANK )
( CLKLO LDA, VBISMASK AND, 0= IF, ' VBISND JSR, THEN, )
( ' ANIM JSR, )
( ' RPOTS JSR, ) CLKLO LDA,
VBIMAPMASK AND, 0= IF,
0 # LDX, BEGIN,
MAPCDT ,X LDA, 0= NOT IF,
' CSOURCE JSR, ' CDEST2 JSR,
' CANDM JSR, ' WRTP JSR,
' DECMAP JSR, THEN,
' DECCDT JSR, INX, INX,
8 # CPX, 0= UNTIL,
THEN, ( ' UPDHS JSR, ) CLC,
RTS, END-CODE ( SYS VBI RETURN)
;S
( ?SPEED ?SPEED2 CNFRM )
: RANGE 1+ >R OVER R> < >R 1- > R> AND ;
: ACMD ANONB @ IF ANOFF ELSE ANON THEN ;
: (?SPEED2)
KEY 39 SWAP - 2* VBIMASKT + DUP C@ DUP VBISMASK C!
1 MAX VBIMAPMASK C! 1+ C@ STO ! ;
: ?SPEED
?CH -DUP IF
30 39 RANGE
IF (?SPEED2) THEN THEN ;
: PROMPT2 P" C64SCR 14 28* + 28 20 FILL ;
: CNFRM KEY D = DUP IF ELSE PROMPT2 THEN ; ;S
( TRIG AND FREQ TABLES CRMAP .GWADR MOVE8 )
HERE
04 C, 08 C, 40 C, 80 C,
<-> TRIGMASK
: ?START \ 0 4 0 DO I TRIGMASK +
\ C@ PORTA C@ AND 0= OR LOOP
?TERMINAL 7 AND ( OR ) ;
: ?CLEAR BEGIN ?START 0= UNTIL
;
: MOVE18 ( FROM TO )
18 CMOVE ;
;S
( UPDCRLOC )
: UPDCRLOC ( WORM )
DUP .XPOS 8* 4 +
OVER
.YPOS 1 AND IF 4 + ENDIF
2DUP !HPOS
( W# HPSHAD + C! ) DROP
DUP .YPOS 8* 2E + !VPOS ;
;S
( UPDMAP UPDMV ZRMAP ZMAP )
: ZRMAP ( 2*W# -> )
0 OVER MAPCDT + !
SPMEM + @ 18 0 FILL ;
: ZMAP ( W ) DROP 2*W# ZRMAP ;
: UPDMAP ( W ) 2*W# ZRMAP
DUP .VPOS SWAP .HPOS 2* W#
YXSPRITE 7 MAPCDT 2*W# + !
STO C@ CDT 2*W# + ! ;
: UPDMV ( W )
2*W#
( DUP MAPCDT + 4 SWAP ! )
MAPMOVE +
SWAP .CRIX SWAP ! ; ;S
( WORM BUILDERS CWORM GWORM )
HERE 0 , 0 , 0 , 0 , <-> WORMS
: GWORM ( N -> WORM ) DUP + WORMS + @ ;
: INITWORM ( ADDR --> )
>R R #WORMS @ DUP + WORMS + !
R STX !XPOS R STY !YPOS R 0 !LOC R 0 !#MOVES
R 1 !STATUS R #WORMS @ !WORM# R 0 !HPOS R 0 !VPOS R 6 !CRIX
R 40 0 DO DUP I GETNEW# !MOVE LOOP DROP
R 0 !KIND R 0 !SCORE R> .NAME >R
53 R C! 41 R 1+ C! 4D R 2+ C! 45 R 3 + C!
R 8 4 DO DUP I + 20 SWAP C! LOOP DROP
R> DROP 1 #WORMS +! ;
( KILLW ) HEX 97 97 THRU
: KILLW ( WORM -> ) DROP TKILLW ; ;S
( 0 VBION ! ) A !CRIX
XSND \ .WRM# COLPF0 +
FF 50 DO A 0 DO NOOP LOOP
\ 120 I - 10 / OVER C@ F0 AND OR
\ OVER C!
I I 50 - 0 MAX DO
5 F FFFF I >< - ROVR SOUND 8 +LOOP
STOP IF LEAVE ENDIF
8 +LOOP
\ 5 OVER C@ F0 AND OR SWAP C!
XSND ( 1 VBION ! ) ;
;S
( UPDSTATUS )
: UPDSTATUS ( WORM )
DUP .STATUS
IF DUP [.VAL] 3F =
IF DUP KILLW 0 !STATUS
ELSE 1 !STATUS ENDIF
ELSE DROP ENDIF ;
;S
( UPDLOC UPDCOL TRIGCLR )
: UPDLOC ( WORM )
DUP .XPOS OVER .YPOS #H * +
WDATA + !LOC ;
CODE 40* BOT LDA, CLC, .A ROR, .A ROR, .A ROR,
BOT STA, CLC, NEXT JMP, END-CODE
: UPDCOL ( WORM )
DUP [.VAL] W# 40* + !VAL ;
: INITAUTO ( WORM )
40 0 DO
DUP I DOAI# !MOVE LOOP
DUP 3E 0 !MOVE ( FORCED )
DUP 3D 1 !MOVE DUP 3B 2 !MOVE DUP 37 3 !MOVE
DUP 2F 4 !MOVE DUP 3F DIE# !MOVE
1F 5 !MOVE ; ;S
( WORM INITIALIZATION )
: INITPOS ( WORM )
DUP STX !XPOS DUP STY !YPOS
DUP NOMOVE !CRIX DUP UPDLOC
DUP UPDCRLOC ( DUP UPDMV )
( DUP UPDMAP )
DUP 258 !TMO UPDSTATUS ;
: INITMOVES ( WORM )
40 0 DO
DUP I GETNEW# !MOVE LOOP
DUP 3E 0 !MOVE ( FORCED )
DUP 3D 1 !MOVE
DUP 3B 2 !MOVE
DUP 37 3 !MOVE
DUP 2F 4 !MOVE DUP 3F DIE# !MOVE
1F 5 !MOVE ; ;S
C64SCR 14 28 * + <-> SCRMEM
;S ( DLH SAVELIST BUILDER ) HEX
230 CONSTANT DLH
D404 CONSTANT HSCROL
DLH @ CONSTANT SAVDLH
: RESTORE SAVDLH DLH !
22 DMACTL C! 0 GRACTL C!
E0 2F4 C! 28 COLPF0 C! 0 COLPF1 C!
C COLPF2 C! 46 COLPF3 C!
\ 5 0 DO ( CLEAR PM REGISTRS )
\ 0 D00D I + C! LOOP ;
;
;S
;S ( DISPLAY LIST BUILDER ) HEX
70 ALLOT 14 , HERE HERE 70 C, 70 C,
56 C, WDATA 0 #H * + , 46 C, WDATA 1 #H * + ,
56 C, WDATA 2 #H * + , 46 C, WDATA 3 #H * + ,
56 C, WDATA 4 #H * + , 46 C, WDATA 5 #H * + ,
56 C, WDATA 6 #H * + , 46 C, WDATA 7 #H * + ,
56 C, WDATA 8 #H * + , 46 C, WDATA 9 #H * + ,
56 C, WDATA A #H * + , 46 C, WDATA B #H * + ,
56 C, WDATA C #H * + , 46 C, WDATA D #H * + ,
56 C, WDATA E #H * + , 46 C, WDATA F #H * + ,
56 C, WDATA 10 #H * + , 46 C, WDATA 11 #H * + ,
56 C, WDATA 12 #H * + , 46 C, WDATA 13 #H * + ,
80 C, 60 C, 46 C, SCRMEM 50 + , 00 C, 40 C,
46 C, SCRMEM , 00 C, 00 C, 46 C, SCRMEM 28 + ,
41 C, , <-> WDL
;S
( WDL SETHSCRL CHARACTER SET DEF. )
HERE
1 C, 2 C, 4 C, 8 C, 10 C, 20 C,
<-> TMASK
;S
( HEX #DV 2+ CDL WDL
( : SETHSCRL )
( DUP 2 - @ 1 DO )
( DUP I 3 * + 1 - DUP C@ 10 OR )
( SWAP C! 2 +LOOP DROP )
( C HSCROL C! ; )
( WDL SETHSCRL )
2F4 <-> CHBAS D409 <-> CHBASE
WCHSET 100 / FF AND <-> WCHSETH
WCHSETH VAR CHNOW C VAR SCRLVAL
( CHSET BUILDING TVEC DEFS )
HERE
00 C, 00 C, 00 C, 0F C, ( 0 )
00 C, 00 C, 00 C, 00 C,
00 C, 00 C, 00 C, 00 C, ( 1 )
08 C, 08 C, 04 C, 04 C,
00 C, 00 C, 00 C, 00 C, ( 2 )
10 C, 10 C, 20 C, 20 C,
00 C, 00 C, 00 C, F0 C, ( 3 )
00 C, 00 C, 00 C, 00 C,
20 C, 20 C, 10 C, 10 C, ( 4 )
00 C, 00 C, 00 C, 00 C,
04 C, 04 C, 08 C, 08 C, ( 5 )
00 C, 00 C, 00 C, 00 C,
<-> TVEC
;S
( CHSET BUILDING )
: DALLY FF 0 DO I DROP LOOP ;
37A7 VARIABLE SEED
\ : RAND SEED @ FB * 3D + DUP SEED ! 4* MSB ;
: RAND D012 C@ SEED +! SEED C@ ;
;S : ORCHARVEC ( CHARADDR VECADR )
8 0 DO 2DUP I + C@
OVER I + C@ OR SWAP
I + C! LOOP DROP DROP ;
: ORCHAR ( CHB CINDX -> CHB )
6 0 DO 2DUP TMASK I + C@
AND IF
OVER 8 * +
TVEC I 8 * + ORCHARVEC
ELSE DROP ENDIF LOOP
DROP ;
( CHSET BUILD WDISPLAY )
: HI MSB ; : LO LSB ;
: CLEARF WDATA #H #V * 0 FILL
CLEAR64PF ;
;S : BUILDCHSET ( CHBASE ) DUP 200 0 FILL
40 0 DO
I ORCHAR LOOP DROP 8 WCHSET 3 + C! ;
: IWDISPLAY ( 2A ) 22 DMACTL C!
( 02 ) 00 GRACTL C! WDL DLH !
C0 NMIEN C! \ GPR C@ GPRIOR C!
\ PMA HI PMBASE C!
\ C 0 DO 0 I D000 + C! LOOP ( PLAYER H POS )
4 0 DO ( PWDTH D008 I + C! ) ( PLAYER WIDTHS )
COLPFT I + C@ COLPF0 I + C!
\ COLPMT I + C@ COLPM0 I + C!
LOOP WCHSETH CHBAS C! ; ;S
( [X] [Y] SCALE )
: [X] ( X -> X CLIPS )
DUP #DH-1 H0 + > IF #DH - ELSE
DUP H0 < IF #DH + ENDIF ENDIF ;
: [Y] ( Y -> Y CLIPS )
DUP #DV-1 V0 + > IF #DV - ELSE
DUP V0 < IF #DV + ENDIF
ENDIF ;
HERE ( C D F G A ... )
( NEED 18 ONLY )
892 , 99F , B71 , CD8 , E6B ,
1125 , 133F , 16E3 , 19B0 , 1CD6 ,
224B , 267E , 2DC6 , 3361 , 39AC ,
4495 , 4CFC , 5B8C , 66C2 , 7358 ,
892B , 99F7 , B719 , CD85 , E6B0 ,
<-> SCALE ;S
( SOUND BSND MSND PWORM )
\ : BSND ( WORM --> ) DROP ;
\ 2*W# DUP FRQT + FF SWAP !
\ CDT + 10 SWAP ! ;
\ C VAR FV 4 VAR BV ( FOR,BK VOL)
: MSND ( W M )
SWAP .STATUS
IF W# 3* + 2* SCALE + @ >R WV SR AR R> ROVR C64SOUND
ELSE DROP THEN ;
;S : PWORM 1 VBION !
3F 0 DO DUP DUP I
.MOVE MSND 8 WAIT LOOP
DROP XSND 0 VBION ! ; ;S
( [MOVE] DECTMO GXINC XY! X! Y! ^ )
: [MOVE] ( WORM M -> WORM M )
DUP 5 > IF ( OVER BSND ) ELSE
OVER .VAL OVER TMASK + C@
AND IF DROP GETNEW#
ENDIF ENDIF ;
: DECTMO ( W -> )
DUP .TMO 13 - 50 MAX !TMO ;
: GXINC ( WORM -> XINCV )
.YPOS 1 AND IF XINCO ELSE
XINCE ENDIF ;
;S
( ?SPACE ?CR MOVEOK DETRACT TIMEOUT )
: ?SPACE ?CH 20 =KEY ;
: ?NOTSP ?CH DUP 0= SWAP 20 = OR
IF 0 ELSE KEY THEN ;
: ?CR ?CH 0D =KEY ;
: MOVEOK ( WORM M -> FLAG )
TMASK + C@ SWAP .VAL AND 0= ;
: DETRACT ( 0 4D C! ) ;
: PAUSEP P" ." PAUSED: HIT RUN " ;
: ?PAUSE ?CH 03 = IF PAUSEP KEY DROP
BEGIN ?CH IF 0 ELSE KEY 03 = THEN
?TERMINAL OR UNTIL PROMPT2 THEN ;
: TIMEOUT ( MOVE --> MOVE F ) ?PAUSE
( W# ) ( DUP BLINK ) ?SPEED
( TRIGMASK + C@ PORTA C@ AND 0= ) ?NOTSP ( OR) STOP OR ; ;S
( SETTIME NXTMOVE CLRKBD )
0 VAR KEYPOT
: SETTIME ( WORM ) DROP ;
\ 0 KEYPOT !
\ 0 21E ! FF 22C C! DUP .TMO
\ 21E ! DROP 2*W# >R
\ R R + SCALE + C@
\ R FRQT + !
\ STO @ R> CDT + ! ;
: NXTMOVE ( MOVE -> MOVE )
NMOVE + C@ 5 MIN 0 MAX ;
: CLRKBD BEGIN ?CH WHILE KEY DROP REPEAT ;
;S
;S : =OR ROT >R R = SWAP R> = OR ; ;S ( CASES )
: CASES ?COMP CSP @ !CSP 4 ; IMMEDIATE
: >OF 4 ?PAIRS COMPILE OVER COMPILE < COMPILE 0BRANCH
HERE 0 , COMPILE DROP 5 ; IMMEDIATE
: <OF 4 ?PAIRS COMPILE OVER COMPILE > COMPILE 0BRANCH
HERE 0 , COMPILE DROP 5 ; IMMEDIATE
: =OF 4 ?PAIRS COMPILE OVER COMPILE = COMPILE 0BRANCH
HERE 0 , COMPILE DROP 5 ; IMMEDIATE
: INOF 4 ?PAIRS COMPILE ROT COMPILE >R COMPILE R COMPILE >=
COMPILE SWAP COMPILE R COMPILE <= COMPILE AND
COMPILE R> COMPILE SWAP COMPILE 0BRANCH
HERE 0 , COMPILE DROP 5 ; IMMEDIATE
: ENDOF 5 ?PAIRS COMPILE BRANCH HERE 0 , SWAP 2 [COMPILE] THEN
4 ; IMMEDIATE
: ENDCASES 4 ?PAIRS COMPILE DROP BEGIN SP@ CSP @ = 0= WHILE 2
[COMPILE] THEN REPEAT CSP ! ; IMMEDIATE ;S
( FIXL0 FIXL1 )
\ : FIXL2 ( W# ) MAPCLR + C@ COLRMEM 14 28* + 28 ROT FILL ;
;S
: FIXL0 ( W# ) ( SCORE LINE )
DUP 40* ( W# MASK )
SWAP 5 * SCRMEM +
DUP 5 + SWAP
DO I C@ 3F AND OVER OR I C!
LOOP DROP ;
: FIXL1 ( W# ) ( NAME LINE )
DUP 40* ( W# MASK )
SWAP 5 * SCRMEM 28 + +
DUP 5 + SWAP
DO I C@ 3F AND OVER OR I C!
LOOP DROP ; ;S
( ADDONE )
\ : ADDONE ( ADDR )
\ >R BEGIN
\ R C@ 3F AND DUP 2F 38 RANGE
\ IF 1+ R C! 1 ELSE
\ DUP 39 = IF DROP 30 R C! R> 1- >R 0 ELSE
\ DROP 31 R C! 1 THEN THEN
\ UNTIL R> DROP ;
: PUTSCORE ( N A )
>R BEGIN 0A /MOD SWAP
2* A0 + DUP R 1- C! 1+ R C!
R> 2- >R DUP 0= UNTIL R> 2DROP ;
;S
( KEYPOT GKEYPOT X! Y! XY! )
0 VARIABLE TBUF 10 ALLOT 0 VAR CCNT
HEX 0 VAR SEL ( SELECTED WORM )
: HIL2 ( SEL @ FIXL2 ) ; : FIXL2 DROP ;
: GKEYPOT ( -> N )
?SPACE KEYPOT +! KEYPOT @ ;
: PROMPTM P" ." PADDLE/SPACE&RETURN" ;
;S
( LEGAL CHKMOVES )
0 VAR LEGAL 4 ALLOT
0 VAR #LEGAL
HERE 1 C, 2 C, 4 C,
8 C, 10 C, 20 C, <-> MMASK
: CHKMOVES ( WORM )
0 #LEGAL !
[.VAL] 6 0 DO
DUP I MMASK + C@ AND 0= IF
#LEGAL @ LEGAL + I SWAP C!
1 #LEGAL +! ENDIF
LOOP DROP ;
;S
( GPOT ) HEX
: GPOT ( WORM --> INDX ) DROP GKEYPOT
\ .WRM# DUP POT0 + C@ MAXPOT = IF DROP GKEYPOT ELSE
\ CPOT + C@ E6 SWAP -
\ E6 #LEGAL @ 2 * /
\ / GKEYPOT + THEN
#LEGAL @ 1 MAX MOD
LEGAL + C@ 0 MAX 5 MIN ;
: TRIGCLR ( MV WORM - MOVE ) DROP JSCLR ; ;S
\ >R W# TRIGMASK + C@
\ BEGIN DUP PORTA C@ AND
\ R DUP GPOT !CRIX ( R UPDMV )
\ W# DUP + MAPCDT + >R
\ R C@ 0= IF 7 R C! ENDIF R>
\ DROP UNTIL
\ DROP DROP R> .CRIX ; ;S
( PEEKMAP HOME? SAMEDIR? )
: XY->V #H * + WDATA + C@ ;
: PEEKMAP ( W M -> COUNT ) 2DUP
SWAP >R 2 * R GXINC + @ R>
.XPOS + [X] ROT ROT
SWAP >R 2 * YINC + @ R> .YPOS
+ [Y]
XY->V #BITS ;
: HOME? ( W M --> F )
DROP DROP 0 ( NOT IMPL. ) ;
: SAMEDIR? ( W M --> NO/?/YES )
SWAP [.VAL] DUP #BITS 1 = IF
SWAP NXTMOVE TMASK + C@ = 2 *
ELSE SWAP NXTMOVE TMASK + C@
AND IF 1 ELSE 0 ENDIF ENDIF ;
;S
( EVAL )
HERE 5 C, 7 C, 7 C,
9 C, B C, 2 C, <-> SIX
HERE 5 C, 7 C, 7 C,
9 C, 5 C, 2 C, <-> VALFN
: EVAL ( W M --> )
OVER .VAL OVER TMASK + C@
AND IF SIX + 0 SWAP C! DROP
ELSE ( W LEGALMOVE )
2DUP PEEKMAP VALFN + C@ >R
2DUP HOME? R> + >R
SWAP OVER SAMEDIR? R> SWAP -
SWAP SIX + C!
ENDIF ;
;S
( DOAI )
: CK6 ( W --> )
6 0 DO DUP I EVAL LOOP DROP ;
0 VAR TEMP
: 6T SIX + C@ TEMP @ ;
: PICKBEST ( --> M ) 0 TEMP !
6 0 DO
I 6T MAX TEMP ! LOOP 0
6 0 DO I 6T = IF 1+ ENDIF
LOOP RAND SWAP MOD 1+
6 0 DO I 6T = IF 1 - -DUP
0= IF I LEAVE ENDIF ENDIF
LOOP ;
: DOAI ( W --> M )
( 300 0 DO I DROP LOOP )
CK6 PICKBEST ; ;S
( DOS EMULATION )
1 VAR CMDOK : CHKST ;
\ 80 CONSTANT SECSZ
\ 0 VARIABLE FBUF SECSZ ALLOT
: IOBUF PAD ;
: VDOSDISK 1 ;
;S
: GETNEWMOVE DUP 7 !CRIX CLRKBD
XSND DUP SETTIME 2*W#
>R DUP UPDCRLOC
DUP CHKMOVES ( 1 PSCAN C! )
DUP UPDMAP
6 BEGIN DROP DUP GPOT
OVER .CRIX OVER = IF ELSE
2DUP !CRIX
OVER UPDMV ENDIF R MAPCDT +
C@ 0= IF 7 MAPCDT R + ! ENDIF
TIMEOUT UNTIL OVER TRIGCLR
( 0 COLBK C! DETRACT ) [MOVE]
SWAP OVER SWAP
DUP [.VAL] ROT !MOVE ( 0 PSCAN C! )
( 1 VBION ! ) R> DROP ; ;S
( HILITE DELITE )
HERE 38 C, 60 C, 88 C, B0 C, <-> MHP
: MVHILTE ( W# )
DUP 0A * DM 28 17 * + + 0A F7 FILL
MAPCLR OVER + C@ SWAP D027 + C! ;
: MVDELITE ( )
DM 28 17 * + 28 20 FILL W# SPCOLR + C@ W# D027 + C! ;
: HILITE ( WORM ) DROP ;
\ WRM# DUP COLPF0 + SWAP
\ COLPFT + C@ F0 AND 8 OR SWAP C! ;
: DELITE ( ) ;
\ 4 0 DO COLPFT I + C@ F0
\ AND 4 OR COLPF0 I +
\ C! LOOP ;
: XLITE ( ALL COLORS OFF ) ; ;S
\ 4 0 DO 0 COLPF0 I + C! LOOP ; ;S
( GETMOVE )
: GETMOVE ( WORM -> MOVE )
DUP [.VAL] OVER SWAP .MOVE
DUP
6 < IF ELSE DUP ( W M )
GETNEW# = IF DROP W# MVHILTE
DUP GETNEWMOVE MVDELITE DELITE ELSE DUP
DOAI# = IF DROP DUP DOAI
>R DUP DUP [.VAL] R !MOVE R> ELSE DUP
DIE# = IF DROP DUP UPDSTATUS UNDFMOVE ELSE
( ." ????? " S. )
THEN THEN THEN THEN SWAP DROP ;
;S
( INC#MOVES NXTMOVE UPDXPOS )
: INC#MOVES ( WORM )
DUP 4 + @ 1+
SWAP 4 + ! ;
: UPDXPOS ( WORM MOVE )
SWAP >R 2* R GXINC + @ R
.XPOS + [X] R> SWAP !XPOS ;
: UPDYPOS ( WORM MOVE )
SWAP >R 2* YINC + @ R .YPOS
+ [Y] R> SWAP !YPOS ;
0 VAR WSCR 6 ALLOT
: UPDSCR ( WORM )
.WRM# DUP 0A * SCRMEM + 2E +
>R ( ADDONE ) ( DUP FIXL0 ) DUP +
WSCR + DUP >R 1 SWAP +! R> @ R> PUTSCORE ;
;S
( UPDCNODE INSTALLVBI INSTALLHBI INITMEM )
: UPDCNODE ( WORM MOVE )
2DUP !CRIX
OVER .VAL SWAP TMASK + C@
OR DUP 3F AND 3F = IF
OVER 7 !CRIX OVER UPDSCR
ENDIF !VAL ; ;S
: INSTALLVBI ( ADDR -> )
7 SET-INT ;
: INSTALLHBI ( ADDR -> )
40 D40E C! 200 ! C0 D40E C! ;
: INITMEM DLH @ [ ' SAVDLH ] LITERAL !
58 @ [ ' SCRMEM ] LITERAL !
SCRMEM 50 + WDL 41 + ! SCRMEM WDL 46 + !
SCRMEM 28 + WDL 4B + ! ;
;S
( MAKEMOVE )
: MAKEMOVE ( WORM -> STATUS )
DUP UPDSTATUS DUP .STATUS
IF DUP GETMOVE
DUP 6 < IF OVER ZMAP
OVER UPDCRLOC
2DUP MSND 2DUP UPDCNODE
OVER UPDMV OVER UPDMAP
( OVER PAUSE ) OVER UPDCOL
2DUP UPDXPOS 2DUP UPDYPOS
OVER UPDLOC OVER UPDCOL
( OVER ZCRMAP OVER UPDCRLOC )
( OVER INC#MOVES ) 2DUP NXTMOVE
UPDCNODE OVER UPDSTATUS
ENDIF DROP ENDIF DUP UPDSTATUS
.STATUS ; ;S
( GAME ENDGAME CSOUND )
0 VARIABLE MVCNT 4 VAR WTICKS
4 VARIABLE PERIOD
: SETW# DUP ' W# ! DUP + ' 2*W# ! ;
: GAME ( #PLAYERS )
( 1 VBION ! ) 0 QFLG !
DUP 0 DO I GWORM UPDCRLOC LOOP
BEGIN 0 OVER 0 DO ( XSND ) ?PAUSE I SETW#