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fallingsnake.v4.bas.txt
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fallingsnake.v4.bas.txt
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NEW: CLS
0 REM SET TO 40X30 CHARS SCREEN
1 SCREEN 0
2 HM$=CHR$(19) : REM HOME CHARACTER
3 DIM EX(9)
4 FOR T=0TO8: READ C: EX(T)=C: NEXT : REM READ PETSCII EXPLOSION
5 TS = 0 : REM SET TOP SCORE
6 DIM CO(6): CO(0)=9: CO(1)=11: CO(2)=12: CO(3)=15: CO(4)=5: CO(5)=6
7 DIM IO(6): IO(0)=$66: IO(1)=$6F: IO(2)=$54: IO(3)=$75: IO(4)=$58: IO(5)=$1E
10 GOSUB 1000 : REM READ SPRITE DATA
11 GOSUB 1030 : REM SETUP LAYER 0
12 GOSUB 1050 : REM SETUP SPRITE 0
49 REM TITLE SCREEN -----------------
50 REM SET COLORS TO BLACK AND WHITE, CLEAR SCREEN
51 GOSUB 1025
52 COLOR 2,0: CLS : GOSUB 4000: GOSUB 1020: REM PRINT TITLE
53 PRINT " y y y "
54 PRINT " y y y "
55 PRINT " y y y y"
56 PRINT " y y y y y y"
57 PRINT " y y y y" : COLOR 11,0
58 PRINT " FALLING SNAKE":COLOR 12
59 PRINT " FALLING SNAKE":COLOR 14
60 PRINT " **";:COLOR 1
61 PRINT "FALLING SNAKE";: COLOR 14: PRINT "**": PRINT: COLOR 15
62 PRINT : PRINT
63 COLOR 7: PRINT " HI-SCORE: "+STR$(TS)
64 PRINT : PRINT : PRINT : COLOR 15
65 PRINT " SIMON SNAKE IS FALLING"
66 PRINT " DOWN A HOLE!": PRINT
67 PRINT " AVOID ALL OBSTACLES": PRINT: PRINT
68 COLOR 7: PRINT " PRESS SPACE TO START"
70 BA$=CHR$(113):BB$=CHR$(119) : REM BALL SYMBOLS
71 COLOR 2,0 : PRINT " "+BA$
72 PRINT " "+BA$:PRINT " "+BA$
73 PRINT " "+BA$+BA$+BA$+BA$+BA$+BA$+BA$+BA$+BA$;:COLOR 8:PRINT BB$;
74 COLOR 2: PRINT "="
75 X0=150: Y0=68: GOSUB 1070 : REM SET SPRITE X,Y
76 D0=0: GOSUB 1080 : REM SET SPRITE DATA OFFSET
77 GOSUB 1020
80 C0=C0+1: IF C0>2 THEN C0=0: C1=C1+1: IF C1>255 THEN C1=0:
82 VPOKE 1,$FA1C,C1: VPOKE 1,$FA1D,C1
85 GET A$: IF A$="" GOTO 80 : REM WAIT FOR KEY
99 REM START GAME -----------------
100 COLOR 1,0: CLS : GOSUB 1025: GOSUB 3500 : GOSUB 1020
101 FOR T=1TO29:PRINT:NEXT
102 BO=29*256:SI=102:HI=83 : REM BOTTOMSCREENOFFSET, STONEIMAGE
103 PO=15*256:PI=81:PC=2:PX=20 : REM PLAYEROFFSET, PLAYERIMAGE, PLAYERCOLOR
104 DE=250 : REM DELAY VALUE
105 S=0 : REM SET SCORE
106 D0=4: GOSUB 1080 : REM SET SPRITE DATA OFFSET
107 OI=0 : REM OBSTACLE IMAGE
108 CC=0:L=0
199 REM GAME LOOP -----------------
200 GET A$
201 IF A$=CHR$(29) AND PX<40 THEN PX=PX+1 : REM GO RIGHT
202 IF A$=CHR$(157) AND PX>0 THEN PX=PX-1: REM GO LEFT
210 X=INT(RND(1)*40)*2: C=INT(RND(1)*15)+1 : REM GET RANDOM STONE POSITION
211 O=PO+(PX*2): PE=VPEEK( 0, O )
212 IF PE<>32 THEN O0=O: C0=PE: D0=1: GOSUB 500 : IF D0=1 THEN GOTO 400
225 R=( INT(RND(1)*5) ): IF RND(1) > .95 THEN R=5
226 C=CO(R): I=IO(R)
231 VPOKE 0, BO+X, I: VPOKE 0, BO+X+1, C
235 VPOKE 0, PO+(PX*2), PI: VPOKE 0, PO+(PX*2)+1, PC
280 CL=CL+1: C2=C2+1: TI=0
281 IF CL>2 THEN CL=0: CC=1-CC : LO=255:HI=8: IF CC=1 THEN LO=15:HI=1
282 IF C2>10 THEN C2=0: N0=DE: O0=2: GOSUB 3010 : N0=S: O0=56: GOSUB 3000
284 VPOKE 1,$FA0C,LO: VPOKE 1,$FA0D,HI
295 X0=PX*8: Y0=122: GOSUB 1070 : REM SET SPRITE X,Y
300 FOR W=1 TO DE: NEXT : REM DELAY, SLOW DOWN CODE
305 PRINT : S=S+1 : DE=DE-1 : IF DE<0 THEN DE=0
310 GOTO 200
399 REM GAME OVER -----------------
400 GOSUB 1025 : IF S>TS THEN TS=S
401 REM DRAW EXPLOSION
402 FOR XX=0TO2:FOR YY=0TO2
403 XS=XX+PX-1: YS=YY+15-1 : REM SCREEN X,Y
404 IF PX<1 THEN XS=XX+1 : REM CHECK PLAYER X TO BE ON SCREEN
405 IF PX>38 THEN XS=XX+38
406 DO=XX+(YY*3):SO=(XS*2)+(YS*256) : REM CALC DATA OFFSET, SCREEN OFFSET
407 VPOKE 0,SO,EX(DO) : REM WRITE TO SCREEN
408 VPOKE 0,SO+1,1 : REM WRITE TO SCREEN
409 NEXT:NEXT
410 REM EXPLOSION COLOR EFFECT
411 FOR T=1 TO 50
412 C0=INT(RND(1)*255)
413 C1=INT(RND(1)*255)
414 VPOKE 1,$FA00,C0: VPOKE 1,$FA01,C1
415 NEXT: VPOKE 1,$FA00,0: VPOKE 1,$FA01,0
421 PRINT HM$:PRINT:PRINT:COLOR 14: PRINT " GAME OVER": PRINT
422 COLOR 1: PRINT " SCORE: "+STR$(S);
425 PRINT " HI-SCORE="+STR$(TS)
430 COLOR 7: PRINT: PRINT " PRESS SPACE TRY AGAIN" : PRINT:PRINT
440 GET A$
441 C0=C0+1: IF C0>2 THEN C0=0: C1=C1+1: IF C1>255 THEN C1=0:
442 VPOKE 1,$FA1C,C1: VPOKE 1,$FA1D,C1
450 IF A$ = "" OR A$=CHR$(29) OR A$=CHR$(157) THEN GOTO 440
452 GOTO 50
500 REM CHECK COLISSION
501 D0 = 1
502 IF C0 = $58 THEN S=S+50 : D0=0: GOSUB600 : REM GOT FOOD = EXTRA POINTS
503 IF C0 = $1E THEN DE=DE+100 : D0=0: GOSUB630 : REM GOT "SLOW DOWN" SYMBOL
505 RETURN
600 VPOKE 0,O0-256,$35 : VPOKE 0,2+O0-256,$30
601 VPOKE 0,1+O0-256,1 : VPOKE 0,3+O0-256,1
602 RETURN
630 VPOKE 0,O0-4-256,$13 : VPOKE 0,2+O0-4-256,$0C:
631 VPOKE 0,4+O0-4-256,$0F :VPOKE 0,6+O0-4-256,$17
632 VPOKE 0,1+O0-4-256,1 : VPOKE 0,3+O0-4-256,1
633 VPOKE 0,5+O0-4-256,1 : VPOKE 0,7+O0-4-256,1
634 RETURN
999 REM SPRITE ROUTINES
1000 REM READ SPRITE DATA
1001 FOR I=O TO 255
1011 READ PX
1012 VPOKE $0,$4000+I,PX
1013 NEXT I
1014 RETURN
1020 POKE $9F29,($40 OR PEEK($9F29))
1021 RETURN
1025 POKE $9F29,PEEK($9F29) AND ($FF - $40)
1026 RETURN
1030 REM SETUP 2 LAYERS SCREEN
1031 POKE $9F29,($20 OR $10 OR PEEK($9F29))
1032 POKE $9F2F, PEEK( $9F36)
1033 POKE $9F2D, PEEK( $9F34)
1034 POKE $9F2E, $00: POKE $9F35, $0F
1035 COLOR 1,0: CLS
1040 RETURN
1050 POKE $9F29,($40 OR PEEK($9F29)): PO=0
1051 REM SET SPRITE DATA
1053 VPOKE $1,$FC11,$02 : REM 4BPP, ADDRESS $04000
1060 VPOKE $1,$FC16,$0C : REM NO COLLISION, ZDEPTH 3, NO FLIP
1061 VPOKE $1,$FC17,$50+PO : REM 16X16 PIXELS, PALETTE OFFSET PO
1062 RETURN
1070 REM SET SPRITE 0,X0,Y0
1071 VPOKE $1,$FC12,X0 AND $FF
1072 VPOKE $1,$FC13,(X0 AND $0300)/$100
1073 VPOKE $1,$FC14,Y0 : REM YPOS 128
1074 VPOKE $1,$FC15,$00
1075 RETURN
1080 REM SET SPRITE IMG DATA
1081 VPOKE $1,$FC10,D0
1082 RETURN
2499 REM CLEAR LINE FAST(O0,P0,C0)
2500 FOR X=0TO39 STEP 10: O=(X*2)+O0
2501 VPOKE 0,O,P0: VPOKE 0,O+1,C0:VPOKE 0,O+2,P0: VPOKE 0,O+3,C0
2503 VPOKE 0,O+4,P0: VPOKE 0,O+5,C0:VPOKE 0,O+6,P0: VPOKE 0,O+7,C0
2505 VPOKE 0,O+8,P0: VPOKE 0,O+9,C0:VPOKE 0,O+10,P0: VPOKE 0,O+11,C0
2507 VPOKE 0,O+12,P0: VPOKE 0,O+13,C0:VPOKE 0,O+14,P0: VPOKE 0,O+15,C0
2509 VPOKE 0,O+16,P0: VPOKE 0,O+17,C0:VPOKE 0,O+18,P0: VPOKE 0,O+19,C0
2515 NEXT
2516 RETURN
2999 REM UPDATE SCORE
3000 S$=STR$(N0 + 1000000)
3001 FOR T=2TOLEN(S$)-1
3002 C=ASC(MID$(S$,T+1))
3004 VPOKE 0,7676+O0+(T*2),C
3005 NEXT
3006 RETURN
3009 REM UPDATE SPEED
3010 S$=STR$(N0 + 1000)
3011 FOR T=2TOLEN(S$)-1
3012 C=ASC(MID$(S$,T+1))
3014 VPOKE 0,7676+O0+(T*2),C
3015 NEXT
3016 RETURN
3499 REM SETUP LAYERS FOR PLAYIN
3500 O0=7680:P0=32:C0=$5D:GOSUB 2500
3501 O0=7936:P0=$79:C0=$DB:GOSUB 2500
3502 OF=7936+256:P0=32:C0=0
3503 FOR T=0TO27:O0=OF+(T*256):GOSUB2500:NEXT
3510 RETURN
3099 REM SETUP LAYERS FOR TITLE/HSCORE/ENDGAME
4000 OF=7936-256:P0=32:C0=0
4001 FOR T=0TO29:O0=OF+(T*256):GOSUB2500:NEXT
4002 RETURN
10000 REM PETSCI EXPLOSION
10001 DATA $4D, $20 , $4E, $20, $D6, $20, $4E, $20, $4D
11000 DATA $00, $00, $22, $22, $22, $22, $00, $00
11001 DATA $00, $22, $82, $82, $82, $82, $22, $00
11002 DATA $02, $88, $88, $28, $28, $28, $28, $20
11003 DATA $28, $08, $08, $22, $22, $22, $82, $8b
11004 DATA $28, $88, $88, $20, $00, $28, $28, $b0
11005 DATA $02, $82, $82, $00, $02, $82, $8b, $00
11006 DATA $00, $22, $20, $00, $28, $22, $b0, $00
11007 DATA $00, $20, $20, $28, $22, $2b, $00, $00
11008 DATA $00, $00, $02, $82, $2b, $b0, $00, $00
11009 DATA $00, $00, $28, $2b, $b0, $00, $00, $00
11010 DATA $00, $00, $82, $00, $00, $00, $00, $00
11011 DATA $00, $00, $22, $92, $00, $00, $00, $00
11012 DATA $00, $00, $0b, $22, $92, $92, $00, $00
11013 DATA $00, $00, $00, $00, $22, $29, $92, $00
11014 DATA $00, $00, $00, $00, $00, $00, $22, $20
11015 DATA $00, $00, $00, $00, $00, $00, $00, $22
12000 DATA $00, $22, $22, $00, $00, $00, $00, $00
12001 DATA $02, $88, $88, $20, $00, $00, $00, $00
12002 DATA $28, $08, $80, $82, $00, $00, $00, $00
12003 DATA $28, $88, $88, $82, $00, $00, $00, $00
12004 DATA $02, $88, $88, $20, $00, $00, $00, $00
12005 DATA $00, $28, $82, $00, $00, $00, $00, $00
12006 DATA $00, $02, $20, $00, $00, $00, $00, $00
12007 DATA $00, $20, $02, $00, $00, $00, $00, $00
12008 DATA $00, $00, $00, $00, $00, $00, $00, $00
12009 DATA $00, $00, $00, $00, $00, $00, $00, $00
12010 DATA $00, $00, $00, $00, $00, $00, $00, $00
12011 DATA $00, $00, $00, $00, $00, $00, $00, $00
12012 DATA $00, $00, $00, $00, $00, $00, $00, $00
12013 DATA $00, $00, $00, $00, $00, $00, $00, $00
12014 DATA $00, $00, $00, $00, $00, $00, $00, $00
12015 DATA $00, $00, $00, $00, $00, $00, $00, $00
50000 REM END