MISSILE TRAJECTORY This application takes an angle of direction and an amount of thrust, and then plots the course of a missle fired off with those properties. Pretty simple and actually fairly accurate in it's representation. I think I wrote this in the late 80s after learning to write a missle-tracking program in ADA while at Cal Poly Pomona. A=20 B=249 E=.9 F=.9 LINE (A,B)-(A,B),1 100 LINE (10,250)-(470,250) 110 LOCATE 1,1:INPUT "ANGLE";ANG 120 LOCATE 2,1:INPUT "THRUST";THR 130 LET THR=THR/10 140 LET E=E*1.1 150 LET D=THR-E 500 LINE (A,B)-(A,B),1 510 LET A=A+5 511 IF D<=0 THEN GOSUB 1000 512 IF D>0 THEN GOSUB 1100 523 LOCATE 1,20:PRINT D 524 LOCATE 2,20:PRINT E 527 IF A>=500 THEN END 528 IF B>=250 THEN END 529 IF B<=(-100) THEN END 530 LINE (A,B)-(A,B),1 540 GOTO 500 1000 LET E=E*1.1 1010 LET D=THR-E 1015 LET D=ABS(D) 1016 LET B=B+D 1020 RETURN 1100 LET E=E*1.1 1110 LET D=THR-E 1120 LET B=B-D 1130 RETURN