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Commodore BASIC  |  1987-08-05  |  820 b   |  34 lines
  1. 1 GOTO16
  2. 2 GETA$:IFA$=""THEN10
  3. 3 IFA$>"/"ANDA$<":"THENSF=VAL(A$)-SS*(A$="0"):GOTO10
  4. 4 IFA$="[147]"THENSYS36888:GOTO10
  5. 5 IFA$="!"THENSYS36867:GOTO10
  6. 6 IFA$="="THENSYS36882:GOTO10
  7. 7 IFA$="&"THENSYS36879:GOTO10
  8. 8 IFA$=""THENSYS36885:GOTO10
  9. 9 A=USR(33),0:LOAD"CMND",D0
  10. 10 X=X+USR(121)*SF:Y=Y-USR(122)*SF
  11. 11 IFX>331THENX=331
  12. 12 IFX<12THENX=12
  13. 13 IFY>239THENY=239
  14. 14 IFY<40THENY=40
  15. 15 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
  16. 16 A=USR(32),0
  17. 17 GOSUB2:A=USR(117):IFA<>16THEN17
  18. 18 SYS36864
  19. 19 X1=X-12:Y1=Y-40:A=USR(34),X,Y,1:A=USR(32),1
  20. 20 A=USR(117):IFA<>0THEN20
  21. 21 GOSUB2:A=USR(117):IFA<>16THEN21
  22. 22 X2=X-12:Y2=Y-40:A=USR(34),X,Y,2:A=USR(32),2
  23. 23 A=USR(117):IFA<>0THEN23
  24. 24 A=USR(33),1:A=USR(33),2
  25. 25 IF(X1=X2)OR(Y1=Y2)THEN16
  26. 26 IFY1>Y2THENY3=Y2:Y2=Y1:Y1=Y3
  27. 27 A=USR(33),0:T=5/(5*ABS(X2-X1)+ABS(Y2-Y1))
  28. 28 FORY4=0TO2*(null)STEPT
  29. 29 X3=X1+((X2-X1)*SIN(Y4)):Y3=Y1+(Y2-Y1)*(Y4/(2*(null)))
  30. 30 IFX3<0THEN33
  31. 31 IFX3>320THEN33
  32. 32 A=USR(64),X3,Y3
  33. 33 NEXT:A=USR(32),0:GOTO16
  34.