Lunar Lander

YOU ARE LANDING ON THE MOON AND HAVE TAKEN OVER MANUAL
CONTROL 500 FEET ABOVE A GOOD LANDING SPOT.  YOU HAVE A
DOWNWARD VELOCITY OF 50 FT/SEC.  120 UNITS OF FUEL REMAIN.

HERE ARE THE RULES THAT GOVERN YOUR SPACE VEHICLE:
(1) AFTER EACH SECOND, THE HEIGHT, VELOCITY, AND REMAINING
    FUEL WILL BE REPORTED.
(2) AFTER THE REPORT, A '?' WILL BE TYPED.  ENTER THE
    NUMBER OF UNITS OF FUEL YOU WISH TO BURN DURING THE
    NEXT SECOND.  EACH UNIT OF FUEL WILL SLOW YOUR DESCENT
    BY 1 FT/SEC.
(3) THE MAXIMUM THRUST OF YOUR ENGINE IS 30 FT/SEC/SEC OR
    30 UNITS OF FUEL PER SECOND.
(4) WHEN YOU CONTACT THE LUNAR SURFACE, YOUR DESCENT ENGINE
    WILL AUTOMATICALLY CUT OFF AND YOU WILL BE GIVEN A
    REPORT OF YOUR LANDING SPEED AND REMAINING FUEL.
(5) IF YOU RUN OUT OF FUEL, THE '?' WILL NO LONGER APPEAR,
    BUT YOUR SECOND BY SECOND REPORT WILL CONTINUE UNTIL
    YOU CONTACT THE LUNAR SURFACE.

Example session:

.R BASIC
NEW OR OLD--OLD
FILE NAME--RKB0:ROCKT1

READY
RUN

ROCKT1  BA    4A    

LUNAR LANDING SIMULATION
----- ------- ----------

DO YOU WANT INSTRUCTIONS (YES OR NO)?NO
BEGINNING LANDING PROCEDURE.....

G O O D   L U C K ! ! !


SEC  FEET   SPEED    FUEL      PLOT OF DISTANCE

 0  500     50      120     I                                        *
?1
 1  448     54      119     I                                    *
?0
 2  391.5   59      119     I                               *
?50
 3  345     34      89      I                           *
?5
 4  311     34      84      I                        *
?

Rest of game not show

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