130 REM SL=SHOTS LEFT. YOU CAN MAKE A LONGER GAME BY GIVING MORE SHOTS ON 200
1000 :
1010 REM ******INSTS******
1020 :
1030 TEXT : HOME : NORMAL
1040 VTAB 3: HTAB 11: PRINT "*** AIR ATTACK ***"
1050 VTAB 7
1060 PRINT "IN THIS GAME YOU ARE A FIGHTER PILOT. YOU SCORE BY HITTING ONE OF THE ENEMY SHIPS WITH ONE OF YOUR BOMBS AND SINKING IT."
1070 PRINT
1080 PRINT "TO DROP A BOMB SIMPLY PRESSANY KEY ON THE KEYBOARD. YOUR SCORE FOR HITTING A SHIP WILL DEPEND ON WHICH PART OF THE SHIP YOU HIT."
1090 PRINT
1100 PRINT "IF YOU HIT THE LOWER DECK, YOU SCORE 10 POINTS. IF YOU HIT THE UPPER DECK, YOU SCORE 20 POINTS. IF YOU HIT THE SMOKE-STACK YOU HAVE DONE VERY WELL, AND ARE REWARDED WITH 30 POINTS."
3090 COLOR= 0: HLIN AX,AX +6 AT 2: HLIN AX +1,AX +6 AT 1: PLOT AX +6,0
3100 REM LINE 3110 CHECKS TO SEE IF THE PLANE IS AT POSITION -1. IF SO, THE LANE IS OFF THE SCREEN. AX REVERRTS TO 33, THE RIGHT HAND SIDE OF THE PICTURE. FROM THERE THE CYCLE BEGINS AGAIN.
3110 AX = AX -1: IF AX <0 THEN AX = 33
3120 COLOR= 4: HLIN AX,AX +6 AT 2: HLIN AX +1,AX +6 AT 1: PLOT AX +6,0: RETURN
3130 IF FF THEN 3160
3140 IF PEEK( -16384) <128 THEN RETURN
3150 FF = 1: POKE -16368,0:FX = AX +3:FY = 2
3160 COLOR= 0: PLOT FX,FY
3170 FY = FY +1
3180 IF SCRN( FX,FY) = 0 THEN COLOR= 13: PLOT FX,FY: RETURN
3190 IF SCRN( FX,FY) = 2 THEN 3230
3200 TS = TS +(38 -FY) *10
3210 SC = 0: COLOR= 0: HLIN SX,SX +6 AT 37: HLIN SX +3,SX +5 AT 36: PLOT SX +4,35
3220 SX = 33:SS = 1:SC = 0
3230 COLOR= 2: HLIN FX -1,FX +1 AT 37: PLOT FX -2,36: PLOT FX,36: PLOT FX2,36: PLOT FX -3,35: PLOT FX,35: PLOT FX +3,35
3240 COLOR= 0: HLIN FX -1,FX +1 AT 37: PLOT FX -2,36: PLOT FX,36: PLOT FX2,36: PLOT FX -3,35: PLOT FX,35: PLOT FX +3,35