mirror of
https://github.com/rfivet/BCG101.git
synced 2024-12-20 17:16:23 -05:00
69 lines
2.6 KiB
QBasic
69 lines
2.6 KiB
QBasic
70 PRINT "LUNAR LANDING SIMULATION"
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80 PRINT "----- ------- ----------"\PRINT
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100 PRINT "DO YOU WANT INSTRUCTIONS (YES OR NO)";\INPUT A$
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110 IF A$="NO" THEN 390
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160 PRINT
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200 PRINT "YOU ARE LANDING ON THE MOON AND HAVE TAKEN OVER MANUAL"
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210 PRINT "CONTROL 500 FEET ABOVE A GOOD LANDING SPOT. YOU HAVE A"
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220 PRINT "DOWNWARD VELOCITY OF 50 FT/SEC. 120 UNITS OF FUEL REMAIN."
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225 PRINT
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230 PRINT "HERE ARE THE RULES THAT GOVERN YOUR SPACE VEHICLE:"
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240 PRINT "(1) AFTER EACH SECOND, THE HEIGHT, VELOCITY, AND REMAINING"
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250 PRINT " FUEL WILL BE REPORTED."
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260 PRINT "(2) AFTER THE REPORT, A '?' WILL BE TYPED. ENTER THE"
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270 PRINT " NUMBER OF UNITS OF FUEL YOU WISH TO BURN DURING THE"
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280 PRINT " NEXT SECOND. EACH UNIT OF FUEL WILL SLOW YOUR DESCENT"
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290 PRINT " BY 1 FT/SEC."
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310 PRINT "(3) THE MAXIMUM THRUST OF YOUR ENGINE IS 30 FT/SEC/SEC OR"
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320 PRINT " 30 UNITS OF FUEL PER SECOND."
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330 PRINT "(4) WHEN YOU CONTACT THE LUNAR SURFACE, YOUR DESCENT ENGINE"
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340 PRINT " WILL AUTOMATICALLY CUT OFF AND YOU WILL BE GIVEN A"
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350 PRINT " REPORT OF YOUR LANDING SPEED AND REMAINING FUEL."
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360 PRINT "(5) IF YOU RUN OUT OF FUEL, THE '?' WILL NO LONGER APPEAR,"
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370 PRINT " BUT YOUR SECOND BY SECOND REPORT WILL CONTINUE UNTIL"
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380 PRINT " YOU CONTACT THE LUNAR SURFACE."\PRINT
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390 PRINT "BEGINNING LANDING PROCEDURE....."\PRINT
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400 PRINT "G O O D L U C K ! ! !"
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420 PRINT\PRINT
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430 PRINT "SEC FEET SPEED FUEL PLOT OF DISTANCE"
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450 PRINT
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455 T=0\H=500\V=50\F=120
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490 PRINT T;TAB(4);H;TAB(12);V;TAB(20);F;TAB(29);"I";TAB(H/12+29);"*"
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500 INPUT B
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510 IF B<0 THEN 650
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520 IF B<=30 THEN 530\B=30
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530 IF B<=F THEN 540\B=F
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540 V1=V-B+5
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560 F=F-B
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570 H=H-.5*(V+V1)
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580 IF H<=0 THEN 670
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590 T=T+1
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600 V=V1
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610 IF F>0 THEN 490
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615 IF B=0 THEN 640
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620 PRINT "*** OUT OF FUEL ***"
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640 PRINT T;TAB(4);H;TAB(12);V;TAB(20);F;TAB(29);"I";TAB(H/12+29);"*"
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650 B=0
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660 GOTO 540
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670 PRINT "*** CONTACT ***"
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680 H=H+.5*(V+V1)
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690 IF B=5 THEN 720
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700 D=(-V+SQR(V*V+H*(10-2*B)))/(5-B)
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710 GOTO 730
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720 D=H/V
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730 V1=V+(5-B)*D
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760 PRINT "TOUCHDOWN AT";T+D;"SECONDS."
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770 PRINT "LANDING VELOCITY =";V1;"FT/SEC"
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780 PRINT F;"UNITS OF FUEL REMAINING."
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790 IF V1<>0 THEN 810
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800 PRINT "CONGRATULATIONS!! A PERFECT LANDING!"
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805 PRINT "YOUR LICENSE WILL BE RENEWED.......LATER."
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810 IF ABS(V1)<2 THEN 840
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820 PRINT "***** SORRY, BUT YOU BLEW IT!!!!"
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830 PRINT "APPROPRIATE CONDOLENCES WILL BE SENT TO YOUR NEXT OF KIN."
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840 PRINT\PRINT\PRINT
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850 PRINT "ANOTHER MISSION";\INPUT A$
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860 IF A$="YES" THEN 390
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870 PRINT\PRINT "CONTROL OUT."\PRINT
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999 END
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