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Commodore BASIC  |  2019-04-13  |  1.1 KB  |  46 lines
  1. 1 GOTO24
  2. 2 GETA$:IFA$=""THEN11
  3. 3 IFA$>"/"ANDA$<":"THENSF=VAL(A$)-SS*(A$="0"):GOTO11
  4. 4 IFA$="[147]"THENSYS36888:GOTO11
  5. 5 IFA$="!"THENSYS36867:GOTO11
  6. 6 IFA$="="THENSYS36882:GOTO11
  7. 7 IFA$="&"THENSYS36879:GOTO11
  8. 8 IFA$=""THENSYS36885:GOTO11
  9. 9 IFA$="_"THENA=USR(33),1:A=USR(33),2:A=USR(33),3:GOTO24
  10. 10 A=USR(33),0:LOAD"CMND",D0
  11. 11 X=X+USR(121)*SF:Y=Y-USR(122)*SF
  12. 12 IFX>331THENX=12
  13. 13 IFX<12THENX=331
  14. 14 IFY>239THENY=40
  15. 15 IFY<40THENY=239
  16. 16 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
  17. 17 GETA$:IFA$<>""THEN3
  18. 18 X=X+USR(121)-USR(122)*1/M::Y=Y-USR(122)+USR(121)*M
  19. 19 IFX>331THENX=331
  20. 20 IFX<12THENX=12
  21. 21 IFY>239THENY=239
  22. 22 IFY<40THENY=40
  23. 23 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
  24. 24 A=USR(32),0
  25. 25 GOSUB2:A=USR(117):IFA<>16THEN25
  26. 26 X1=X-12:Y1=Y-40:A=USR(34),X,Y,1:A=USR(32),1
  27. 27 A=USR(117):IFA<>0THEN27
  28. 28 GOSUB2:A=USR(117):IFA<>16THEN28
  29. 29 X2=X-12:Y2=Y-40:A=USR(34),X,Y,2:A=USR(32),2
  30. 30 A=USR(117):IFA<>0THEN30
  31. 31 IF(Y1=Y2)OR(X1=X2)THENA=USR(33),1:A=USR(33),2:GOTO24
  32. 32 M=(Y2-Y1)/(X2-X1)
  33. 33 GOSUB2:A=USR(117):IFA<>16THEN33
  34. 34 X3=X-12:Y3=Y-40:A=USR(34),X,Y,3:A=USR(32),3
  35. 35 A=USR(117):IFA<>0THEN35
  36. 36 GOSUB17:A=USR(117):IFA<>16THEN36
  37. 37 X4=X-12:Y4=Y-40
  38. 38 IF(X3<>X4)AND(Y3<>Y4)THEN42
  39. 39 FORT=1TO4:A=USR(33),T:NEXT
  40. 40 A=USR(117):IFA<>0THEN40
  41. 41 GOTO24
  42. 42 SYS36864
  43. 43 A=USR(117):IFA<>0THEN43
  44. 44 A=USR(33),3:A=USR(66),X3,Y3,X4,Y4
  45. 45 GOTO33
  46.