examples/flight-lander.ss
#reader(lib"read.ss""wxme")WXME0108 ## 
#|
   This file uses the PLT Scheme editor format.
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   Most likely, it was created by saving a program in DrScheme,
   and it probably contains a program with non-text elements
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0 0 17 3 35 #";; (make-world plane balloons fuel)"
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(
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) 500
(
 #"z\0 \333g\233\315\246\323\351\4\2\1M\323\6\203\341\362\362rxxX\255"
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0 0 22 3 1 #")"
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0 0 20 3 3 #"480"
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0 0 17 3 15 #";; horizontally"
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0 0 17 3 9 #"per tick."
0 0 4 29 1 #"\n"
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0 0 20 3 2 #"20"
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0 0 4 29 1 #"\n"
0 0 17 3 55 #";; PLANE-MOVE-Y: the amount that the plane descends per"
0 0 4 29 1 #"\n"
0 0 17 3 8 #";; tick."
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
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0 0 14 3 12 #"PLANE-MOVE-Y"
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0 0 20 3 1 #"5"
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0 0 17 3 5 #";; on"
0 0 17 3 1 #" "
0 0 17 3 12 #"key presses."
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0 0 20 3 2 #"10"
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0 0 14 3 11 #"BASE-HEIGHT"
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2 -1.0 -1.0 0.0 0.0 0           6 500
(
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) 500
(
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) 500
(
 #"SSyy\271\300*\310\276}\373\n\n\n\6\6\0060\247\323\tA\320\251S"
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 #"\256\250\250\310j\265\32\f\6\24E\5g\305\233\224B"
 #"\241\300q\\L\374\327_\177UWW\3438>>>"
) 500
(
 #"\36\f\6%\22IIIICC\203N\247s\271\\\36\217\247\255\255\r\202 "
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 #"/\247\323i\202 h\232\26:\202\301"
 #"\301\301\332\332Z\205B!\225J\265Z"
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 #"\377_\\\\$\bb\345\271\264\266\344"
 #"h\214\263D.\227\227\225\2259\34\216"
 #"\212\212\n\24E\25\n\205\317\347\373\363\317?\1\0N\2473???\26\213\1"
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 #"\25\356,\261X\314`0\0\0\226\227\227Y\226\225\311d\0\0\216\343:::"
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) 153
(
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 #"\251T\352t:\215F#\227\313Q\24\265\331l\317=\367\334\306\213"
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) 0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 50 #";; THRESHOLD is the radius of pixels of the hitbox"
0 0 4 29 1 #"\n"
0 0 17 3 18 #";; for collisions."
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 4 3 1 #" "
0 0 14 3 9 #"THRESHOLD"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"*"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 11 #"image-width"
0 0 4 3 1 #" "
0 0 14 3 11 #"BALLOON-IMG"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 3 #"2/3"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 20 #";; BACKGROUND: scene"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 4 3 1 #" "
0 0 14 3 10 #"BACKGROUND"
0 0 4 29 1 #"\n"
0 0 4 3 2 #"  "
0 0 22 3 1 #"("
0 0 14 3 11 #"place-image"
0 0 4 3 1 #" "
0 0 14 3 5 #"WATER"
0 0 4 29 1 #"\n"
0 0 4 3 15 #"               "
0 0 20 3 1 #"0"
0 0 4 29 1 #"\n"
0 0 4 3 15 #"               "
0 0 22 3 1 #"("
0 0 14 3 1 #"-"
0 0 4 3 1 #" "
0 0 14 3 6 #"HEIGHT"
0 0 4 3 1 #" "
0 0 14 3 11 #"BASE-HEIGHT"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 15 #"               "
0 0 22 3 1 #"("
0 0 14 3 11 #"place-image"
0 0 4 3 1 #" "
0 0 14 3 4 #"LAND"
0 0 4 29 1 #"\n"
0 0 4 3 28 #"                            "
0 0 14 3 11 #"WATER-WIDTH"
0 0 4 29 1 #"\n"
0 0 4 3 28 #"                            "
0 0 22 3 1 #"("
0 0 14 3 1 #"-"
0 0 4 3 1 #" "
0 0 14 3 6 #"HEIGHT"
0 0 4 3 1 #" "
0 0 14 3 11 #"BASE-HEIGHT"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 28 #"                            "
0 0 22 3 1 #"("
0 0 14 3 11 #"empty-scene"
0 0 4 3 1 #" "
0 0 14 3 5 #"WIDTH"
0 0 4 3 1 #" "
0 0 14 3 6 #"HEIGHT"
0 0 22 3 4 #"))))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 13 #";; FUNCTIONS:"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 50 #";; move-plane-wrapping-x-on-tick: number -> number"
0 0 4 29 1 #"\n"
0 0 17 3 51 #";; increase the x-position of PLANE by PLANE-MOVE-X"
0 0 4 29 1 #"\n"
0 0 17 3 15 #";; modulo WIDTH"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 29 #"move-plane-wrapping-x-on-tick"
0 0 4 3 1 #" "
0 0 14 3 1 #"x"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 2 #"  "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 14 3 1 #"x"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 10 #"          "
0 0 14 3 5 #"WIDTH"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 8 #";; TEST:"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 29 #"move-plane-wrapping-x-on-tick"
0 0 4 3 1 #" "
0 0 20 3 2 #"10"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 2 #"10"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 14 3 5 #"WIDTH"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 29 #"move-plane-wrapping-x-on-tick"
0 0 4 3 1 #" "
0 0 20 3 1 #"0"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 1 #"0"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 14 3 5 #"WIDTH"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 17 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 29 #"move-plane-wrapping-x-on-tick"
0 0 17 3 1 #" "
0 0 20 3 3 #"800"
0 0 22 3 1 #")"
0 0 17 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 17 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 17 3 1 #" "
0 0 20 3 3 #"800"
0 0 17 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
0 0 22 3 1 #")"
0 0 17 3 1 #" "
0 0 14 3 5 #"WIDTH"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 38 #";; move-plane-xy-on-tick: posn -> posn"
0 0 4 29 1 #"\n"
0 0 17 3 51 #";; increase the y-position of PLANE by PLANE-MOVE-y"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-plane-xy-on-tick"
0 0 4 3 1 #" "
0 0 14 3 1 #"p"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 2 #"  "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 29 #"move-plane-wrapping-x-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"posn-x"
0 0 4 3 1 #" "
0 0 14 3 1 #"p"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 3 13 #"             "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"posn-y"
0 0 4 3 1 #" "
0 0 14 3 1 #"p"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-Y"
0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 8 #";; TEST:"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"check"
0 0 14 3 7 #"-expect"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-plane-xy-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"10"
0 0 4 3 1 #" "
0 0 20 3 2 #"20"
0 0 22 3 2 #"))"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 2 #"10"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
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0 0 4 3 1 #" "
0 0 14 3 5 #"WIDTH"
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0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 2 #"20"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-Y"
0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"check"
0 0 14 3 7 #"-expect"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-plane-xy-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
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0 0 4 3 1 #" "
0 0 20 3 2 #"30"
0 0 22 3 2 #"))"
0 0 4 3 1 #" "
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0 0 22 3 1 #"("
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0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
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0 0 4 3 1 #" "
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0 0 4 3 1 #" "
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0 0 22 3 1 #"("
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0 0 4 3 1 #" "
0 0 20 3 2 #"30"
0 0 4 3 1 #" "
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0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"check"
0 0 14 3 7 #"-expect"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-plane-xy-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 3 #"800"
0 0 4 3 1 #" "
0 0 20 3 2 #"40"
0 0 22 3 2 #"))"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"modulo"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 3 #"800"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-X"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 14 3 5 #"WIDTH"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 4 3 1 #" "
0 0 20 3 2 #"40"
0 0 4 3 1 #" "
0 0 14 3 12 #"PLANE-MOVE-Y"
0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 53 #";; move-balloon-on-tick: balloon-info -> balloon-info"
0 0 4 29 1 #"\n"
0 0 17 3 44 #";; moves the balloon based on its direction."
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 20 #"move-balloon-on-tick"
0 0 4 3 1 #" "
0 0 14 3 1 #"b"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 2 #"  "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 4 29 1 #"\n"
0 0 4 3 3 #"   "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"posn-x"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"balloon-info-position"
0 0 4 3 1 #" "
0 0 14 3 1 #"b"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 3 14 #"              "
0 0 22 3 1 #"("
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0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"posn-y"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"balloon-info-position"
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0 0 14 3 1 #"b"
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0 0 4 3 17 #"                 "
0 0 22 3 1 #"("
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0 0 4 3 1 #" "
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0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 3 3 #"   "
0 0 22 3 1 #"("
0 0 14 3 22 #"balloon-info-direction"
0 0 4 3 1 #" "
0 0 14 3 1 #"b"
0 0 22 3 3 #")))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 7 #";; TEST"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"check"
0 0 14 3 7 #"-expect"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 20 #"move-balloon-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
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0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 1 #"1"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 3 14 #"              "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 4 3 1 #" "
0 0 20 3 2 #"51"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 1 #"1"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"check"
0 0 14 3 7 #"-expect"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 20 #"move-balloon-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 2 #"-4"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 3 14 #"              "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 4 3 1 #" "
0 0 20 3 2 #"46"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 2 #"-4"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 62
#";; move-balloons-on-tick: (listof balloon) -> (listof balloon)"
0 0 4 29 1 #"\n"
0 0 17 3 29 #";; Moves all of the balloons."
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
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0 0 22 3 1 #"("
0 0 14 3 21 #"move-balloons-on-tick"
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0 0 4 3 2 #"  "
0 0 22 3 1 #"("
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0 0 4 29 1 #"\n"
0 0 4 3 5 #"     "
0 0 14 3 5 #"empty"
0 0 22 3 1 #"]"
0 0 4 29 1 #"\n"
0 0 4 3 4 #"    "
0 0 22 3 1 #"["
0 0 14 3 4 #"else"
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0 0 4 3 5 #"     "
0 0 22 3 1 #"("
0 0 14 3 4 #"cons"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 20 #"move-balloon-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 5 #"first"
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0 0 14 3 8 #"balloons"
0 0 22 3 2 #"))"
0 0 4 29 1 #"\n"
0 0 4 3 11 #"           "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-balloons-on-tick"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 4 #"rest"
0 0 4 3 1 #" "
0 0 14 3 8 #"balloons"
0 0 22 3 6 #")))]))"
0 0 4 29 1 #"\n"
0 0 4 29 1 #"\n"
0 0 17 3 7 #";; TEST"
0 0 4 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-balloons-on-tick"
0 0 4 3 1 #" "
0 0 14 3 5 #"empty"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 14 3 5 #"empty"
0 0 22 3 1 #")"
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0 0 4 29 1 #"\n"
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0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 21 #"move-balloons-on-tick"
0 0 4 29 1 #"\n"
0 0 4 3 15 #"               "
0 0 22 3 1 #"("
0 0 14 3 4 #"cons"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
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0 0 20 3 2 #"50"
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0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 17 #"make-balloon-info"
0 0 4 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 9 #"make-posn"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 4 3 1 #" "
0 0 20 3 2 #"50"
0 0 22 3 1 #")"
0 0 4 3 1 #" "
0 0 20 3 2 #"-4"
0 0 22 3 1 #")"
0 0 4 29 1 #"\n"
0 0 4 3 27 #"                           "
0 0 14 3 5 #"empty"
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#"                                                           "
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#"                                                          "
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