; SPIRO

; PART 1

  2 TO J
  8 TO RANDOM
  180 TO C
  IF X>127 -180 TO C

HTURN

  0 TO B TO SPEEDY
  C TO A TO SPEEDX
  I+1 TO I

HORIZ

  180 TO C
  IF Y>127 -180 TO C

HSCAN

  0-A/2+180+J TO AIM
  AIM TO RADAR
  0 - RADAR TO SHOT
  IF RADAR<60 GOTO VTURN
  IF RANDOM=0 GOTO VTURN
  0-J TO J
  IF SPEEDX=0 GOTO VTURN
  GOTO HSCAN

VTURN

  0 TO A TO SPEEDX
  C TO B TO SPEEDY
  IF I=6 GOTO SPIRO

VERT
  
  180 TO C
  IF X>127 -180 TO C

VSCAN
  
  B/2+90+J TO AIM
  AIM TO RADAR
  0-RADAR TO SHOT
  IF RADAR<60 GOTO HTURN
  IF RANDOM=0 GOTO HTURN
  0-J TO J
  IF SPEEDY=0 GOTO HTURN
  GOTO VSCAN

; PART 2

SPIRO

  80 TO H TO V
  IF X>127 176 TO H
  IF Y>127 GOTO SETUP
  GOTO DOWN

SETUP

  176 TO V
  GOTO UP

MOVE

  H-X+50*2 TO SPEEDX
  V-Y+50*2 TO SPEEDY
  GOSUB SCAN
  H-X-50*2 TO SPEEDX
  V-Y-50*2 TO SPEEDY
  GOSUB SCAN
  ENDSUB

DOWN

  V+25 TO V
  GOSUB MOVE
  IF V>175 GOTO RIGHT
  GOTO DOWN

RIGHT

  H+25 TO H
  GOSUB MOVE
  IF H>175 GOTO UP
  GOTO RIGHT

UP

  V-25 TO V
  GOSUB MOVE
  IF V<81 GOTO LEFT
  GOTO UP

LEFT

  H-25 TO H
  GOSUB MOVE
  IF H<81 GOTO DOWN
  GOTO LEFT

SCAN

  AIM+25 TO AIM TO RADAR
  20 -RADAR TO SHOT
  AIM+25 TO AIM TO RADAR
  20-RADAR TO SHOT
  IF SPEEDY=0 ENDSUB
  AIM+25 TO AIM TO RADAR
  20-RADAR TO SHOT
  AIM+25 TO AIM TO RADAR
  20-RADAR TO SHOT
  ENDSUB