use Lunar Lander code from Jim Storer's homepage at cs.brandeis.edu

lunar.fc

@@ -1,46 +1,47 @@
-01.04 T "CONTROL CALLING LUNAR MODULE.MANUAL CONTROL IS NECESSARY"!
+01.04 T "CONTROL CALLING LUNAR MODULE. MANUAL CONTROL IS NECESSARY"!
 01.06 T "YOU MAY RESET FUEL RATE K EACH 10 SECS TO 0 OR ANY VALUE"!
-01.08 T "BETWEEN 8&200 LBS/SEC.YOU'VE 16000 LBS FUEL.ESTIMATED"!
-01.11 T "FREE FALL IMPACT TIME-120 SECS.CAPSULE WEIGHT-32500 LBS"!
-01.20 T "FIRST RADAR CHECK COMING UP"!!!
+01.08 T "BETWEEN 8 & 200 LBS/SEC. YOU'VE 16000 LBS FUEL. ESTIMATED"!
+01.11 T "FREE FALL IMPACT TIME-120 SECS. CAPSULE WEIGHT-32500 LBS"!
+01.20 T "FIRST RADAR CHECK COMING UP"!!!;E
 01.30 T "COMMENCE LANDING PROCEDURE"!"TIME,SECS   ALTITUDE,"
 01.40 T "MILES+FEET   VELOCITY,MPH   FUEL,LBS   FUEL RATE"!
+01.50 S A=120;S V=1;S M=32500;S N=16500;S G=.001;S Z=1.8
 
-02.05 S L=0;S A=120;S V=1;S M=33000;S N=16500;S G=.001;S Z=1.8
-02.10 T "    ",%3,L,"       ",FITR(A),"  ",%4,5280*(A-FITR(A))
-02.20 T %6.02,"       ",3600*V,"    ",%6.01,M-N,"      K=";A K;S T=10
-02.70 T %7.02;I (K)2.72;I (200-K)2.72;I (K-8)2.71,3.1,3.1
-02.71 I (K-0)2.72,3.1,2.72
+02.10 T "    "%3,L,"           "FITR(A),"  "%4,5280*(A-FITR(A))
+02.20 T %6.02,"       "3600*V,"    "%6.01,M-N,"      K=";A K;S T=10
+02.70 T %7.02;I (200-K)2.72;I (8-K)3.1,3.1;I (K)2.72,3.1
 02.72 T "NOT POSSIBLE";F X=1,51;T "."
 02.73 T "K=";A K;G 2.7
 
-03.10 I ((M-N)-.001)4.1;I (T-.001)2.1;S S=T
-03.40 I ((N+S*K)-M)3.5,3.5;S S=(M-N)/K
+03.10 I (M-N-.001)4.1;I (T-.001)2.1;S S=T
+03.40 I (N+S*K-M)3.5,3.5;S S=(M-N)/K
 03.50 D 9;I (I)7.1,7.1;I (V)3.8,3.8;I (J)8.1
 03.80 D 6;G 3.1
 
-04.10 T "FUEL OUT AT",L," SECS"!
-04.40 S S=(-V+FSQT(V*V+2*A*G))/G;S V=V+G*S;S L=L+S
-
-05.10 T "ON THE MOON AT",L," SECS"!;S W=3600*V
-05.20 T "IMPACT VELOCITY OF",W,"M.P.H."!,"FUEL LEFT:"
-05.30 T M-N," LBS."!;I (-W+1)5.5,5.5
-05.40 T "PERFECT LANDING !-(LUCKY)"!;G 5.9
-05.50 I (-W+10)5.6,5.6;T "GOOD LANDING-(COULD BE BETTER)"!;G 5.90
-05.60 I (-W+25)5.7,5.7;T "CONGRATULATIONS ON A POOR LANDING"!;G 5.9
-05.70 I (-W+60)5.8,5.8;T "CRAFT DAMAGE.GOOD LUCK"!;G 5.9
-05.80 T "SORRY,BUT THERE WERE NO SURVIVORS-YOU BLEW IT!"!"IN"
-05.81 T "FACT YOU BLASTED A NEW LUNAR CRATER",W*.277777,"FT.DEEP.
-05.90 T "CONTROL OUT";QUIT
+04.10 T "FUEL OUT AT"L," SECS"!
+04.40 S S=(FSQT(V*V+2*A*G)-V)/G;S V=V+G*S;S L=L+S
+
+05.10 T "ON THE MOON AT"L," SECS"!;S W=3600*V
+05.20 T "IMPACT VELOCITY OF"W," M.P.H."!"FUEL LEFT:"M-N," LBS"!
+05.40 I (1-W)5.5,5.5;T "PERFECT LANDING !-(LUCKY)"!;G 5.9
+05.50 I (10-W)5.6,5.6;T "GOOD LANDING-(COULD BE BETTER)";G 5.9
+05.60 I (22-W)5.7,5.7;T "CONGRATULATIONS ON A POOR LANDING";G 5.9
+05.70 I (40-W)5.81,5.81;T "CRAFT DAMAGE. GOOD LUCK";G 5.9
+05.81 I (60-W)5.82,5.82;T "CRASH LANDING-YOU'VE 5 HRS OXYGEN";G 5.9
+05.82 T "SORRY,BUT THERE WERE NO SURVIVORS-YOU BLEW IT!"!"IN "
+05.83 T "FACT YOU BLASTED A NEW LUNAR CRATER",W*.277777," FT. DEEP"!
+05.90 T !!!!"TRY AGAIN?"!
+05.92 A "(ANS. YES OR NO)"P;I (P-0NO)5.94,5.98
+05.94 I (P-0YES)5.92,1.2,5.92
+05.98 T "CONTROL OUT"!!!;Q
 
 06.10 S L=L+S;S T=T-S;S M=M-S*K;S A=I;S V=J
 
 07.10 I (S-.005)5.1;S S=2*A/(V+FSQT(V*V+2*A*(G-Z*K/M)))
 07.30 D 9;D 6;G 7.1
 
-08.10 S W=(1-M*G/(Z*K))/2;S S=M*V/(Z*K*(W+FSQT(W*W+V/(2*Z))));D 9
+08.10 S W=(1-M*G/Z*K)/2;S S=M*V/(Z*K*(W+FSQT(W*W+V/Z)))+.05;D 9
 08.30 I (I)7.1,7.1;D 6;I (-J)3.1,3.1;I (V)3.1,3.1,8.1
 
 09.10 S Q=S*K/M;S J=V+G*S+Z*(-Q-Q^2/2-Q^3/3-Q^4/4-Q^5/5)
 09.40 S I=A-G*S*S/2-V*S+Z*S*(Q/2+Q^2/6+Q^3/12+Q^4/20+Q^5/30)
-*