21

Date: 198x
Type: Program
Platform(s): TS 2068

Blackjack. Don’t go over 21.

Appears on

One of a series of library tapes. Programs on these tapes were renamed to a number series. This tape contained programs 20001 to 20050. These tapes were compiled by Tony Willing.

Gallery

21

Source Code

   10 REM SAVE "21" LINE 4000
   20 DIM v(10)
   30 LET a=0
   40 LET s=a
   50 LET p=a
   60 LET n=1
   70 GO SUB 1000
   80 LET p=1
   90 LET n=6
  100 GO SUB 1000
  110 LET p=0
  120 LET n=2
  130 GO SUB 1000
  140 GO SUB 2000
  150 GO TO 130
  160 LET p=1
  170 LET n=7
  180 GO SUB 1000
  190 LET n=n+1
  200 GO TO 180+2830*(b>16)
 1000 LET v(n)=INT (2+RND*13)
 1010 LET b=v(n)
 1020 LET t=(n-1-p*5)*6
 1030 PLOT 8*t+3,8*(21-p*10): DRAW 40,0: DRAW 0,-56: DRAW -40,0: DRAW 0,56
 1035 LET z=INT (RND*4)+1
 1040 PRINT AT 1+p*10,1+t;STR$ b AND b<11;"A" AND b=11;"J" AND b=12;"Q" AND b=13;"K" AND b=14
 1045 IF z=1 OR z=2 THEN INK 2
 1047 PRINT AT 2+p*10,1+t;"\a" AND z=1;"\b" AND z=2;"\c" AND z=3;"\d" AND z=4: INK 0
 1050 FOR i=1+5*p TO 5+5*p
 1060 IF v(i)=11 THEN LET a=a+1
 1070 LET s=s+v(i)*(v(i)<12)+10*(v(i)>11)
 1080 IF s>21 AND a THEN GO SUB 1150
 1090 NEXT i
 1100 LET a=0
 1110 PRINT AT 8+10*p,0;"TOTAL=";s: PAUSE 60
 1120 IF s>21 THEN GO TO 3000
 1130 LET b=s: LET s=0
 1140 RETURN 
 1150 LET s=s-10
 1160 LET a=a-1
 1170 RETURN 
 2000 PRINT AT 21,0;"Hit or Stop?"
 2010 GO TO 2010+10*(INKEY$<>"")
 2020 PRINT AT 21,0;"                  "
 2030 GO TO 2040+970*(INKEY$="S" OR INKEY$= "s")
 2040 LET n=n+1
 2050 RETURN 
 3000 PRINT AT 8+10*p,0;"##BUSTED##"
 3010 LET p=p+1
 3020 LET s=0
 3030 IF p=1 THEN GO TO 160
 3040 PAUSE 600
 3050 CLS 
 3060 RUN 20
 4000 RESTORE : DATA 102,255,255,126,60,24,24,0,16,56,124,254,124,56,16,0,16,56,124,254,254,102,16,0,16,56,16,84,254,84,16,0
 4010 FOR i=0 TO 7: READ a: POKE USR "a"+i,a: NEXT i
 4020 FOR i=0 TO 7: READ a: POKE USR "b"+i,a: NEXT i
 4030 FOR i=0 TO 7: READ a: POKE USR "c"+i,a: NEXT i
 4040 FOR i=0 TO 7: READ a: POKE USR "d"+i,a: NEXT i
 4050 POKE 23658,8: CLS : RUN 20

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