BasicGame square_size=32
    SpriteSet
        alienBlue > Bomber  cooldown=3 prob=0.01 img=oryx/alien1 stype=bomb speed=0.8
        background > Immovable  hidden=True img=oryx/space1
        portalFast > SpawnPoint  total=20 img=portal hidden=True stype=alienGreen cooldown=12 invisible=True
        portalSlow > SpawnPoint  total=20 img=portal hidden=True stype=alienBlue cooldown=16 invisible=True
        alienGreen > Bomber  cooldown=3 prob=0.01 img=oryx/alien3 stype=bomb speed=0.8
        avatar > FlakAvatar  img=oryx/spaceship1 stype=sam
        bomb > Missile  orientation=DOWN img=oryx/bullet2 color=RED speed=0.5
        wall > Immovable  solid=True color=DARKGRAY
        sam > Missile  singleton=True orientation=UP img=oryx/bullet1 color=BLUE
        base > Immovable  color=WHITE img=oryx/planet
    LevelMapping
        . > background
        0 > background base
        1 > background portalSlow
        2 > background portalFast
        A > background avatar
    TerminationSet
        Timeout limit=1023 win=True
        SpriteCounter stype=avatar limit=0 win=False
    InteractionSet
        background base > reverseDirection scoreChange=-2
        background avatar > subtractHealthPoints scoreChange=-2
        portalSlow EOS > bounceForward
        background EOS > turnAround
        background EOS > undoAll
