```10 REM program: over the mountain by David Chance:"Computer Graphics",TAB 1981
15 REM adopted to the IBM PC by Anonymous (I don't want credit for this mess!)
20 COLOR 6,1: CLS:PRINT:KEY OFF: WIDTH 80
30 PRINT "                  OVER THE MOUNTAIN"
40 PRINT
50 PRINT "Your mission will be to pick up a parcel while you are going over the mountian."
60 PRINT "This mountain will have three peaks. The first peak (left side of screen) will  have the parcel you are to pick up."
70 PRINT "At the second and third peak are laser cannons,  which will begin firing when   you reach a random point.
80 PRINT "Your ship will be moved up by entering thrusts form 1 through 6, entering a "; CHR\$(26);"will move you horizontally."
90 PRINT "To descend, enter a "+ CHR\$(25)+", then a number between 1 and 6. Your parcel must hit      exactly at the bottom of your ship, or you will crash."
100 PRINT "After you successfully pick up the parcel and go over all three peaks, you must slowly descend and hit the safety zone.
110 PRINT "Anywhere else will induce an error and you will have to start over. Also keep   an eye on your fuel level. To run out will be certain death!!"
114 PRINT " ***Hit any key to continue."
116 A\$=INKEY\$: IF A\$="" THEN 116
120 T\$=TIME\$ :RANDOMIZE VAL(RIGHT\$(T\$,2))
140 REM set moutain
150 REM keep height of mountain between 23 and 06
160 REM peak mountain at 3
170 REM input all moves at 0
180 Y=23:X=7:P=3:I=1:CLS:R=0:U=0:COLOR 6
185 FL=INT(RND(1)*350*2):IF FL<300 THEN 185
190 DEF SEG: POKE 106,0
200 H=INT(RND(3)*17):IF H<10 THEN 200
210 LOCATE Y,X: PRINT CHR\$(221)
220 Y=Y-1:X=X+1
230 IF R=1 THEN 300 ELSE IF R=3 THEN 340
240 IF Y<>H THEN 210 ELSE X(I)=X:Y(I)=Y
250 LOCATE Y,X: PRINT CHR\$(221)
260 X=X+1:Y=Y+1
270 IF R=2 THEN 320 ELSE IF R=4 THEN 360
280 IF Y<>H+6 THEN 250
290 H=H-6:R=1:I=I+1: GOTO 210
300 IF Y<>H THEN 210 ELSE X(I)=X:Y(I)=Y
310 H=H+5:R=2:I=I+1: GOTO 250
320 IF Y<>H THEN 250
330 R=3: GOTO 210
340 IF Y>=5 THEN 210 ELSE X(I)=X:Y(I)=Y
350 R=4: GOTO 250
360 IF Y<> 23 THEN 250
370 IF Y(2)<=Y(3) THEN R=0:GOTO 180 ELSE X(8)=X(3): X(7)=X(2): Y(5)=Y(2): X(9)=X(1): Y(6)=Y(1) : FOR Q=X(3)+16 TO 80: LOCATE Y(3)+15 ,Q : PRINT "*":NEXT: LOCATE Y(3)+16,X(3)+18: PRINT"safety zone"
380 X=4:Y=23:J=0
390 LOCATE Y,X: PRINT CHR\$(2);: BEEP
400 LOCATE 1,10: PRINT"enter thrust ("; CHR\$(25); " first to descend)";
405 LOCATE 24,15: PRINT "fuel left:";FL;"tons.             ";
410 IF X>X(8) AND U<>3 THEN LOCATE 24,15,0: PRINT "missed parcel pickup!     ";: GOTO 500 ELSE IF X>=X(8) THEN GOTO 500
420 IF X>X(1)-5 AND U<>1 AND U<>3 THEN GOSUB 960
430 IF J=1 THEN X(3)=X(3)-1: IF X(3)<=X(9)-2 THEN LOCATE Y(3),X(3)+1: PRINT " ";:X(3)=X(8): ELSE LOCATE Y(3),X(3): PRINT CHR\$(27);" ";:LOCATE 24,15:PRINT" laser attack!                                    ";
440 IF Y(2)<=2 THEN LOCATE Y(2),X(2): PRINT " ";:X(2)=X(7) : Y(2)=Y(5)
450 IF X>=X(7)+1 THEN X(2)=X(2)+1:Y(2)=Y(2)-1: LOCATE Y(2),X(2): PRINT CHR\$(47);:LOCATE Y(2)+1,X(2)-1: PRINT " ";
461 GOSUB 570:K=INT(RND*4)
470 IF U=3 THEN 500 ELSE IF X>X(9)-1 AND X<=X(8) THEN LOCATE 24,15:PRINT "launching parcel....";:LOCATE Y(1),X(1): PRINT " ";:X(1)=X(1)+1:Y(1)=Y(1)-1: IF Y(1)<=2 THEN Y(1)=Y(6): X(1)=X(9) ELSE LOCATE Y(1),X(1) : PRINT CHR\$(127);
480 POS1=SCREEN(Y+1,X): POS2=SCREEN(Y,X+1): POS3=SCREEN(Y,X-1): IF X>X(9)-1 AND X6 THEN C=6
526 IF Y<=2 THEN GOSUB 640: GOTO 400
530 GOSUB 570
540 K=INT(RND*3): LOCATE Y,X: PRINT " ";:FL=FL-ABS(C-Y): IF FL<=0 THEN FL=0 ELSE IF U=3 AND P=1 THEN LOCATE Y+1,X: PRINT " ";
550 LOCATE 24,15: PRINT "fuel left:";FL;"tons.             ";: IF FL<=0 THEN GOSUB 570: GOTO 840
560 IF Y<=2 THEN GOSUB 640: GOTO 400 ELSE IF X>=80 THEN GOTO 380 ELSE Y=Y-C: IF C=0 THEN GOSUB 1030: GOSUB 570: GOTO 610 ELSE X=X+K-2: GOSUB 570: GOTO 610
570 COLOR 30: IF Y<=2 THEN Y=2
575 IF Y>=24 THEN Y=24
580 IF X<=2 THEN X=2
585 IF X>=79 THEN X=79
590 LOCATE Y,X: PRINT CHR\$(2);: COLOR 4: IF U=3 AND P=1 THEN LOCATE Y+1,X:PRINT CHR\$(127);
595 POS1=SCREEN(Y,X+1):POS2=SCREEN(Y,X-1):IF POS1<>32  OR POS2<>32  THEN GOTO 780
600 RETURN
610 IF Y>=2 AND Y<=6 THEN GOSUB 740
620 FOR L=1 TO 55:NEXT: IF K<>2 GOTO 520 ELSE IF Y<=2 THEN GOSUB 640: GOTO 400 ELSE 400
630 END
640 GOSUB 570
650 LOCATE 1,10: PRINT "enter descend thrust                                  ";
660 A\$=INKEY\$: IF A\$="" THEN 660
680 LOCATE 24,15: PRINT "fuel left: ";FL;" tons                      ";:C=VAL(A\$):IF C>6 THEN C=6
690 LOCATE Y,X: PRINT " ";: FL=FL-ABS(1+K): IF FL<0 THEN FL=0: GOTO 840 ELSE IF U=3 AND P=1 THEN LOCATE Y+1,X: PRINT " ";
700 IF X>=80 OR Y>=24 THEN GOTO 380: ELSE Y=Y+C+K: IF C=0 THEN GOTO 710 ELSE X=X+K-2 :IF X<=1 THEN X=1
710 GOSUB 570
720 IF X>X(3) AND Y>=Y(3)+15 THEN GOTO 1040 ELSE
730 A\$="": RETURN
740 REM laser attack
750 LOCATE Y(5),X(7): PRINT CHR\$(15);
760 LOCATE Y(3),X(8): PRINT CHR\$(15);
770 J=1:RETURN
780 LOCATE 1,10: PRINT "direct hit!!!                                 ";
785 BEEP
800 LOCATE 24,15: PRINT " You have to start over !                           ";
830 R=0: U=1: GOTO 860
840 LOCATE 1,10: PRINT " You are out of fuel!!                      ";
842 BEEP
845 FOR LL=1 TO 5000: NEXT
850 FL=0
860 FOR Q=25+(15*Y) TO 120*Y STEP 2*Y: PLAY"mb" :SOUND Q,.5: NEXT
865 FOR LL=1 TO 100 : NEXT
868 LOCATE Y-1,X: PRINT " ";
870 LOCATE Y,X: PRINT CHR\$(2);
880 IF Y>=23 THEN Y=24 ELSE Y=Y+1
890 IF Y<>24 THEN GOTO 868
893 FOR LL=1 TO 800: NEXT
900 CLS:PRINT " C-R-A-S-H ";:SOUND 100,15
910 PRINT:PRINT "Are you ready to try again?"
920 INPUT A\$
930 IF A\$="Y" OR A\$="y" THEN 180
940 PRINT "May be some other mountain"
960 LOCATE Y(1),X(1): PRINT CHR\$(127);
970 U=1
980 RETURN
990 LOCATE 1,10: PRINT"You have made the pickup!                              ";
995 BEEP
1000 FOR LL=1 TO 2000: NEXT
1010 LOCATE 1,10: PRINT"                                           ";
1020 U=3:P=1: RETURN
1030 X=X+1:RETURN
1040 IF U<>3 AND P<>1 THEN LOCATE 1,10:PRINT "Try again with remaining fuel.                      ";: FOR L=1 TO 10000:NEXT:LOCATE Y,X:PRINT " ": R=0:U=1:GOTO 380
1050 PLAY "mb l2 t100 o3 acegbde": LOCATE 1,10: PRINT"CONGRADULATIONS!!! You completed the mission.";
1060 FOR L=1 TO 10000: NEXT
1070 GOTO 910

```