--- /dev/null
+2 PRINT "THIS IS A COMPUTER SIMULATION OF AN APOLLO LUNAR"
+3 PRINT "LANDING CAPSULE." \ PRINT \ PRINT
+4 PRINT "THE ON-BOARD COMPUTER HAS FAILED (IT WASN'T MADE BY"
+5 PRINT "NCR) SO YOU HAVE TO LAND THE CAPSULE MANUALLY"
+6 PRINT \ PRINT "SET BURN RATE OF RETRO ROCKETS TO ANY VALUE BETWEEN"
+7 PRINT "0 (FREE FALL) AND 200 (MAXIMUM BURN) POUNDS PER SECOND"
+8 PRINT "SET NEW BURN RATE EVERY 10 SECONDS." \ PRINT
+9 PRINT "CAPSULE WEIGHT 32,500 LBS; FUEL WEIGHT 16,500 LBS"
+10 PRINT \ PRINT \ PRINT "GOOD LUCK!!!"
+11 L=0
+13 PRINT \ PRINT "SEC","MI + FT","MPH","LB FUEL","BURN RATE" \ PRINT
+15 A=120 \ V=1 \ M=33000 \ N=16500 \ G=1.00000E-03 \ Z=1.8
+21 PRINT L,INT(A);INT(5280*(A-INT(A))),3600*V,M-N, \ INPUT K \ T=10
+31 IF M-N<1.00000E-03 THEN 41 \ IF T<1.00000E-03 THEN 21
+32 S=T \ IF M>=N+S*K THEN 35
+33 S=(M-N)/K
+35 GOSUB 91 \ IF I<=0 THEN 71 \ IF V<=0 THEN 38 \ IF J<0 THEN 81
+38 GOSUB 61 \ GO TO 31
+41 PRINT "FUEL OUT AT";L;"SEC"\S=(-V+SQR(V*V+2*A*G))/G\V=V+G*S\L=L+S
+51 W=3600*V \ PRINT "ON MOON AT";L;"SEC - IMPAACT VELOCITY";W;"MPH"
+52 IF W>1.2 THEN 53 \ PRINT "PERFECT LANDING! (LUCKY)" \ GO TO 96
+53 IF W>10 THEN 56 \ PRINT "GOOD LANDING (COULD BE BETTER)" \ GO TO 96
+56 IF W>60 THEN 58 \ PRINT "CRAGT DAMAGE.....YOU'RE STRANDED HERE UNTIL"
+57 PRINT "A RESCUE PARTY ARRIVES. HOPE YOU HAVE ENOUGH OXYGEN!" \ GO TO 96
+58 PRINT "SORRY, BUT THERE WERE NO SURVIVORS...YOU BLEW IT!"
+59 PRINT "IN FACT, YOU BLASTED A NEW LUNAR CRATER";W*2777;"FT DEEP"
+60 GO TO 96
+61 L=L+S \ T=T-S \ M=M-S*K \ A=I \ V=J \ RETURN
+71 IF S<5.00000E-03 THEN 51 \ D=V+SQR(V*V+2*A*(G-Z*K/M)) \ S=2*A/D
+73 GOSUB 91 \ GOSUB 61 \ GO TO 71
+81 W=(1-M*G/(Z*K))/2 \ S=M*V/(Z*K*(W+SQR(W*W+Y/Z)))+.05 \ GOSUB 91
+83 IF I<=0 THEN 71 \ GOSUB 61 \ IF J>0 THEN 31 \ IF Y>0 THEN 81 \ GO TO 31
+91 Q=S*K/M \ J=V+G*S+Z*(-Q-Q*Q/2-Q^3/3-Q^4/4-Q^5/5)
+94 I=A-G*S*S/2-V*S+Z*S*(Q/2+Q^2/6+Q^3/12+Q^4/20+Q^5/30)
+95 RETURN
+96 PRINT \ PRINT \ PRINT \ PRINT "TRY AGAIN??";
+97 INPUT A$
+98 IF A$="Y" THEN 6
+99 END
projects / pdp8.git / blobdiff