def move(self):
#self.x += 2
#self.y += 1
# with the following code we get the frantic move we expected
#self.x += random.randrange(-1,2)
#self.y += random.randrange(-1,2)
global speed
global xspeed
global lost
global box
global countreac
if self.y >= HEIGHT / 2. - 3 * basesize - sundiam / 2:
speed = 0
banner("Burnt!")
lost = True
engine.exit_engine()
elif self.y > (-1 * HEIGHT / 2 + basesize + speed + 20) or speed < 0:
# le zéro de la fusée est au coin supérieur droit du réacteur gauche
self.y -= speed
speed += 0.02
else:
if abs(speed) > 2:
banner("Crashed!")
else:
banner("Landed!")
self.y = -1 * HEIGHT / 2 + basesize
speed = 0
engine.exit_engine()
countreac += 1
if countreac > 20:
box.color = "black"
def keyboard_cb(key):
global ship # assuming it's unique (and this is the case!)
global spd # the accelerometer
if key == 'q' and ship.fuel_level > 0:
ship.mode = 1
ship.acceleration += 0.05
reg_speed_bar(100 * ship.acceleration)
spd.shape = "speed"
ship.shape = "powered_lander"
elif key == 's':
ship.acceleration -= 0.05
reg_speed_bar(100 * ship.acceleration)
spd.shape = "speed"
if ship.acceleration <= 0:
ship.acceleration = 0
ship.mode = 0
ship.shape = "lander"
elif key == 'Escape':
engine.exit_engine()
elif key == 'Right':
ship.head -= 8
elif key == 'Left':
ship.head += 8
elif key == "space":
shoot(ship)
def keyboard_cb(key):
# Problem on some machines: if a key stays pressed, then
# there is a delay between the first key event being triggered
# and the next ones (this is the damn repeat delay)
# How to get around this issue?
global ship
global countreac
if key == 'q' and ship.fuelLevel > 0:
ship.mode = 1
ship.gazpower += 0.05
drawSpeedBar(100 * ship.gazpower)
spd.shape = "speed"
ship.shape = "fusee reac"
elif key == 's':
ship.gazpower -= 0.05
drawSpeedBar(100 * ship.gazpower)
spd.shape = "speed"
if ship.gazpower <= 0:
ship.gazpower = 0
ship.mode = 0
ship.shape = "fusee"
elif key == 'Escape':
#print("Au revoir...")
engine.exit_engine()
elif key == 'Right':
ship.head -= 2
elif key == 'Left':
ship.head += 2
def genericGroundCollisionCall(ship, gnd):
step = 0
orig = 0
for i in range(len(gnd.ground) - 1):
x0 = gnd.ground[i][0]
y0 = gnd.ground[i][1]
x1 = gnd.ground[i + 1][0]
y1 = gnd.ground[i + 1][1]
y = ship.y + HEIGHT / 2
x = ship.x
if x0 <= ship.x and ship.x <= x1: # Here we are!
a = -1 * (y1 - y0) / (x1 - x0)
b = 1
c = -1 * y0 + x0 * (y1 - y0) / (x1 - x0)
d = abs(a * x + b * y + c) / math.sqrt(a**2 + b**2)
print(math.sqrt(xspeed**2 + yspeed**2))
if (d <= 2 * basesize
and a != 0) or (d <= 2 * basesize and a == 0 and
(abs(shiphead) >= 15 or
math.sqrt(xspeed**2 + yspeed**2) >= 1)):
banner("Crashed!")
engine.exit_engine()
elif (d <= 2 * basesize and a == 0 and abs(shiphead) < 15):
banner("Landed!")
engine.exit_engine()
def move(self):
global speed
global xspeed
global lost
global box
global countreac
if self.y >= HEIGHT / 2. - 3 * basesize - sundiam / 2:
speed = 0
banner("Burnt!")
lost = True
engine.exit_engine()
elif self.y > (-1 * HEIGHT / 2 + basesize + speed + 20) or speed < 0:
# le zéro de la fusée est au coin supérieur droit du réacteur gauche
self.y -= speed
speed += 0.02
else:
if abs(speed) > 2:
banner("Crashed!")
else:
banner("Landed!")
self.y = -1 * HEIGHT / 2 + basesize
speed = 0
engine.exit_engine()
countreac += 1
if countreac > 20:
box.color = "black"
def gameplay(self):
global pickedupkeys, doorsopened, lkey
pickupkey(0, 4, 0, 0, 4, -268, 0)
dooropening(0, 4, 1, 0, -300, 0, 0, 10)
pickupkey(1, 4, 1, 1, 2, -268, 0)
dooropening(1, 2, 2, 1, -300, 0, 0, 10)
pickupkey(0, 0, 2, 1, 1, 0, 268)
dooropening(1, 1, 3, 2, 0, 300, 10, 0)
pickupkey(0, 1, 3, 2, 2, 268, 0)
dooropening(2, 2, 4, 3, 300, 0, 0, 10)
if bossbeaten == 1:
if ldoor[2][3] != []:
(door, x, y) = ldoor[2][3][0]
key = lkey[2][3][0]
if door.y < 400:
door.y += 10
key.y += 10
else:
engine.del_obj(door)
engine.del_obj(key)
ldoor[2][3].remove((door, x, y))
lkey[2][3].remove(key)
if posi == 2 and posj == 4:
banner('You won!')
engine.exit_engine()
def move(self):
global speed
global xspeed
global lost
global box
global countreac
if self.y >= HEIGHT / 2. - 3 * basesize - sundiam / 2:
speed = 0
banner("Burnt!")
lost = True
engine.exit_engine()
elif self.y > (-1 * HEIGHT / 2 + basesize + speed + 20) or speed < 0:
# le zéro de la fusée est au coin supérieur droit du réacteur gauche
self.y -= speed
speed += 0.02
else:
if abs(speed) > 2:
banner("Crashed!")
else:
banner("Landed!")
self.y = -1 * HEIGHT / 2 + basesize
speed = 0
engine.exit_engine()
countreac += 1
if countreac > 20:
box.color = "black"
def move(self):
global COUNTDOWN, rocket, gravity
self.x += self.speed * math.cos(math.radians(180 - self.angle))
self.y -= self.speed * math.sin(
math.radians(180 - self.angle)) + gravity
gravity = min(gravity + GRAVITYSTEP, GRAVITYMAX)
if self.speed < 0:
self.speed += SPEEDDECREASESTEP
if COUNTDOWN > 0:
COUNTDOWN -= 1
else:
rocket.shape = skin
Lplatform = self.canland()
for landingpad in Lplatform:
if landingpad > -LENGTH and self.y <= landingpad + radius:
if gravity - self.speed > 1 or self.angle % 360 != 90:
banner('Game over')
engine.exit_engine()
else:
self.speed = 0
gravity = 0
if self.collide_gnd():
banner('Game over')
engine.exit_engine()
def input_cb(key): if key == 'q' or key == 'Q': engine.exit_engine() elif key == 'Up': me.adjustalpha(STEPALPHA) elif key == 'Down': me.adjustalpha(-STEPALPHA) elif key == 'Left': me.adjustbeta(-STEPBETA) elif key == 'Right': me.adjustbeta(STEPBETA) elif key == 'space': if not me.canshoot(): return me.recoil() # ignore travel distance and make the bullet instantaneous # just need to find the coordinates where it hit alpha = me.getalpha() beta = me.getbeta() alpharad = math.radians(alpha) betarad = math.radians(beta) # find y using trigonometry from side view y = DISTANCE * math.tan(alpharad) + GUNY # this calculation isn't correct from a 3D point of view # but it looks right onscreen x = GUNLEN * math.tan(betarad) engine.add_obj(Shot(x, y))
def keyboard_cb(key):
global rocket, countdown, gravity
if key == 'Escape':
engine.exit_engine()
if key == 'Up':
rocket.speed -= SPEEDBOOST
rocket.shape = skin + " powered"
countdown = 20
gravity = max(0, gravity - 1)
if key == 'Left':
rocket.angle += 30
if key == 'Right':
rocket.angle -= 30
if key == 'm':
rocket.speed = 0
rocket = Rocket()
engine.add_obj(rocket)
if key == 'space':
engine.add_obj(NiceBullet(rocket.x, rocket.y, 90 + rocket.angle))
def keyboard_cb(key):
global ship # assuming it's unique (and this is the case!)
global spd # the accelerometer
if key == 'q' and ship.fuel_level > 0:
ship.mode = 1
ship.acceleration += 0.05
reg_speed_bar(100 * ship.acceleration)
spd.shape = "speed"
ship.shape = "powered_lander"
elif key == 's':
ship.acceleration -= 0.05
reg_speed_bar(100 * ship.acceleration)
spd.shape = "speed"
if ship.acceleration <= 0:
ship.acceleration = 0
ship.mode = 0
ship.shape = "lander"
elif key == 'Escape':
engine.exit_engine()
elif key == 'Right':
ship.head -= 8
elif key == 'Left':
ship.head += 8
elif key == "space":
shoot(ship)
def keyboard_cb(key):
global IN_JUMP
if key == 'e':
engine.exit_engine()
elif key == 'Return' and not IN_JUMP:
IN_JUMP = True
elif key == 'space'and not IN_JUMP and MISSILE_COUNT_UP < 2 and MISSILE_COUNT_RIGHT < 2 and IS_CAR:
engine.add_obj(MissleVertical(15, GROUND_Y + 10, (SPEED * 2), 'blue'))
engine.add_obj(MissileRight())
def keyboard_cb(key):
if key == 'space':
box = Box()
engine.add_obj(box)
elif key == 'Escape':
print("Au revoir... Giscard!")
engine.exit_engine()
else:
print(key)
def keyboard_cb(key):
if key == 'space':
box = Box()
engine.add_obj(box)
elif key == 'Escape':
print("Au revoir... Giscard!")
engine.exit_engine()
else:
print(key)
def input_cb(key):
global heading
if key == 'q' or key == 'Q':
engine.exit_engine()
elif key == 'Left':
heading = (heading + HEADINGSTEP) % 360
elif key == 'Right':
heading = (heading - HEADINGSTEP) % 360
recalcdeltas()
def keyboard_cb(key):
global speed
if key == 'Escape':
engine.exit_engine()
if key == 'space':
speed -= 5
if key == 'm' :
speed = 0
box = Box()
engine.add_obj(box)
def input_cb(key): global heading if key == 'q' or key == 'Q': engine.exit_engine() elif key == 'Left': heading = (heading + HEADINGSTEP) % 360 elif key == 'Right': heading = (heading - HEADINGSTEP) % 360 recalcdeltas()
def move(self):
self.x += self.speed * math.cos(math.radians(180 - self.angle))
self.y -= self.speed * math.sin(math.radians(180 - self.angle))
if self.collide():
banner('Game over')
engine.exit_engine()
if self.collide_gnd():
self.shape = 'whitebullet'
engine.del_obj(self)
def input_cb(key): x, y, r = s.me.get_bc() if key == 'q' or key == 'Q': engine.exit_engine() elif key == 'Left' and x - r > MINX: s.me.setx(x - MOVELEN) s.me.update() elif key == 'Right' and x + r < MAXX: s.me.setx(x + MOVELEN) s.me.update() elif key == 'space': engine.add_obj(MyShot(x, y, 0, MYSHOTSPEED))
def input_cb(key):
x, y, r = s.me.get_bc()
if key == "q" or key == "Q":
engine.exit_engine()
elif key == "Left" and x - r > MINX:
s.me.setx(x - MOVELEN)
s.me.update()
elif key == "Right" and x + r < MAXX:
s.me.setx(x + MOVELEN)
s.me.update()
elif key == "space":
engine.add_obj(MyShot(x, y, 0, MYSHOTSPEED))
def collision_ship_ground(lander, terrain):
step = 0
orig = 0
y = lander.y + HEIGHT / 2
x = lander.x - terrain.x
for i in range(len(terrain.ground) - 1):
x0 = terrain.ground[i][0]
y0 = terrain.ground[i][1]
x1 = terrain.ground[i + 1][0]
y1 = terrain.ground[i + 1][1]
if x0 <= x and x <= x1 and x1 != x0 and y - 2 * basesize < max(y1, y0):
# BAD HACK: there should be no test on y
a = y0 - y1
b = x1 - x0
c = (x0 - x1) * y0 + (y1 - y0) * x0
d = abs(a * x + b * y + c) / math.sqrt(a**2 + b**2)
if (d <= basesize and a != 0):
banner("Crash!")
engine.exit_engine()
elif (d <= 2 * basesize and abs(a) <= 1
and abs(lander.head) >= 15):
banner("Crash on one reactor!")
engine.exit_engine()
elif (d <= 2 * basesize and abs(a) <= 1
and math.sqrt(lander.xspeed**2 + lander.yspeed**2) >= 2):
banner("Fast crash...")
engine.exit_engine()
elif (d <= 2 * basesize and abs(a) <= 1 and abs(lander.head) < 15):
banner("Landed!")
engine.exit_engine()
def genericGroundCollisionCall(ship, gnd):
step = 0
orig = 0
y = ship.y + HEIGHT /2
x = ship.x - gnd.x
for i in range(len(gnd.ground)-1):
x0 = gnd.ground[i][0]
y0 = gnd.ground[i][1]
x1 = gnd.ground[i+1][0]
y1 = gnd.ground[i+1][1]
if x0 <= x and x <= x1 and x1 != x0 and y - 2 * basesize < max(y1, y0):
# BAD HACK: le test sur y ne doit pas être nécessaire
# mathématiquement parlant
a = y0 - y1
b = x1 - x0
c = (x0 - x1) * y0 + (y1 - y0) * x0
d = abs(a * x + b * y + c) / math.sqrt(a ** 2 + b ** 2)
#print(d)
if (d <= basesize and a != 0):
#print(str(x0) + ":" + str(y0) + ";" + str(x1) + ":" + str(y1))
banner("Crashed!")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and abs(ship.head) >= 15):
banner("Crash on one reactor!")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and math.sqrt(ship.xspeed ** 2 + \
ship.yspeed ** 2) >= 1 ):
banner("Fast crash...")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and abs(ship.head) < 15):
banner("Landed!")
engine.exit_engine()
def collision_ship_ground(lander, terrain):
step = 0
orig = 0
y = lander.y + HEIGHT / 2
x = lander.x - terrain.x
for i in range(len(terrain.ground)-1):
x0 = terrain.ground[i][0]
y0 = terrain.ground[i][1]
x1 = terrain.ground[i+1][0]
y1 = terrain.ground[i+1][1]
if x0 <= x and x <= x1 and x1 != x0 and y - 2 * basesize < max(y1, y0):
# BAD HACK: there should be no test on y
a = y0 - y1
b = x1 - x0
c = (x0 - x1) * y0 + (y1 - y0) * x0
d = abs(a * x + b * y + c) / math.sqrt(a ** 2 + b ** 2)
if (d <= basesize and a != 0):
banner("Crash!")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and abs(lander.head) >= 15):
banner("Crash on one reactor!")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and
math.sqrt(lander.xspeed ** 2 + lander.yspeed ** 2) >= 2):
banner("Fast crash...")
engine.exit_engine()
elif (d <= 2*basesize and abs(a) <= 1 and abs(lander.head) < 15):
banner("Landed!")
engine.exit_engine()
def inputs(key):
global count
global county
if key == 'Q' or key == 'q':
engine.exit_engine()
if key == 'space':
if buggy1.deltay == 0:
buggy1.deltay = 5
if key == 'Return' and jumping == False and count != 3 and count < 4 and county < 2:
county = county + 1
count = count + 2
rocket1 = _rocket()
rocket2 = _rocket2()
engine.add_obj(rocket2)
engine.add_obj(rocket1)
def losealife(self):
global gravity, posi, posj, ground
if self.lives == 0:
banner('Game over')
engine.exit_engine()
else:
self.lives -= 1
self.speed = 0
self.angle = 90
self.x = 0
self.y = 0
gravity = GRAVITYBASE
banner("Life lost, {} remaining".format(self.lives))
posi = 0
posj = 4
load()
def keyboard_cb(key):
global speed
global xspeed
global box
global countreac
if key == 'space':
speed -= 0.2
box.color = "red"
countreac = 0
elif key == 'Escape':
print("Au revoir...")
engine.exit_engine()
elif key == 'Left':
xspeed -= 0.1
elif key == 'Right':
xspeed += 0.1
else:
print(key)
def keyboard_cb(key):
global speed
global xspeed
global box
global countreac
if key == 'space':
speed -= 0.2
box.color = "red"
countreac = 0
elif key == 'Escape':
print("Au revoir...")
engine.exit_engine()
elif key == 'Left':
xspeed -= 0.1
elif key == 'Right':
xspeed += 0.1
else:
print(key)
def losealife(self):
if self.lives == 0:
game.banner('Game over')
engine.exit_engine()
game.Stats.display_stats()
else:
self.lives -= 1
self.speed[0] = self.speed[1] = 0
self.angle = 90
self.x = 0
self.y = 0
self.skin = Rocket.skin
game.Game.freeze_spawn = True
game.banner("Life lost, {} remaining".format(self.lives))
if game.Game.posi == 2 and game.Game.posj == 3 and not bad_guys.Boss.bossbeaten:
engine.del_obj(game.Game.boss)
game.Game.posi = 0
game.Game.posj = 4
game.load()
def move(self):
global GRAVITY
self.speed = self.speed + GRAVITY
if self.motor_enable:
self.speed = self.speed + LunarLander.MOTOR_ACCELERATION.rotate(
self.heading())
self.position = self.position + self.speed
if self.y > HEIGHT / 2 - 50:
banner('Aaaaaah')
engine.exit_engine()
if self.y < -HEIGHT / 2 + 30:
if abs(self.speed.y) > 2:
banner('Yo Dead')
else:
banner('Landed')
engine.exit_engine()
def move(self):
global speed, countdown, rocket, gravity
self.x += speed * math.cos(math.radians(180 - angle))
self.y -= speed * math.sin(math.radians(180 - angle)) + gravity
gravity += gravitystep
if speed < 0:
speed += speeddecreasestep
if countdown > 0:
countdown -= 1
else:
rocket.shape = skin
if math.sqrt((self.y - 1170)**2 + self.x**2) < 1000 + radius:
banner('Game over')
engine.exit_engine()
if self.y <= -220 + radius:
if gravity - speed > 1 or angle % 360 != 90:
banner('Game over')
engine.exit_engine()
else:
banner('You won!')
engine.exit_engine()
def keyboard_cb(key):
global speed
global xspeed
global yspeed
global ship
global countreac
global shiphead
if key == "space" or key == "Up":
xspeed = xspeed + math.sin(-3.1415926535 * shiphead / 180) * 0.2
yspeed = yspeed + math.cos(3.1415926535 * shiphead / 180) * 0.2
ship.shape = "fusee reac"
countreac = 0
elif key == "Escape":
print("Au revoir...")
engine.exit_engine()
elif key == "Right":
shiphead -= 2
elif key == "Left":
shiphead += 2
else:
print(key)
def keyboard_cb(key):
global speed
global xspeed
global yspeed
global ship
global countreac
global shiphead
if key == 'space' or key == 'Up':
xspeed = xspeed + math.sin(-3.1415926535 * shiphead / 180) * 0.2
yspeed = yspeed + math.cos(3.1415926535 * shiphead / 180) * 0.2
ship.shape = "fusee reac"
countreac = 0
elif key == 'Escape':
print("Au revoir...")
engine.exit_engine()
elif key == 'Right':
shiphead -= 2
elif key == 'Left':
shiphead += 2
else:
print(key)
def keyboard_cb(key):
"""keyboard manager"""
turtle.setx(0)
turtle.sety(0)
Stats.key_pressed += 1
Game.freeze_spawn = False
if key == 'Return': # Enter
Game.pause = not Game.pause
if key == 'Escape':
engine.exit_engine()
Stats.display_stats()
if not Game.pause:
if key == 'Up' or key == 'z':
Game.rocket.rocket_up()
if key == 'Left' or key == 'q':
Game.rocket.rocket_left()
if key == 'Right' or key == 'd':
Game.rocket.rocket_right()
if key == 'space':
engine.add_obj(
bullets.Bullet(Game.rocket.x, Game.rocket.y,
90 + Game.rocket.angle, True))
Stats.bullets_fired += 1
def gameplay(self):
for door in shapes.Door.ldoor[Game.posi][Game.posj]:
door.dooropening()
for key in shapes.Key.lkey[Game.posi][Game.posj]:
key.pickupkey()
if bad_guys.Boss.bossbeaten:
if shapes.Door.ldoor[Game.boss.posi][Game.boss.posj] != []:
door = shapes.Door.ldoor[Game.boss.posi][Game.boss.posj][0]
key = shapes.Key.lkey[Game.boss.posi][Game.boss.posj][0]
if door.y < 400:
door.y += 10
key.y += 10
else:
engine.del_obj(door)
engine.del_obj(key)
shapes.Door.ldoor[Game.boss.posi][Game.boss.posj].remove(door)
shapes.Key.lkey[Game.boss.posi][Game.boss.posj].remove(key)
if Game.posi == Game.win_posi and Game.posj == Game.win_posj:
banner('You won!')
engine.exit_engine()
Stats.display_stats()
def keyboard_main(key):
"""keyboard manager for the main menu"""
y0 = game.Game.LENGTH / 9
if key == "Return": # enter
engine.del_obj(Menu.select_arrow)
Menu.select_arrow = None
if Menu.cursor_position == 0:
Menu.load_level_selection_menu()
elif Menu.cursor_position == 2:
Menu.load_skin_selection_menu()
elif Menu.cursor_position == 3:
engine.exit_engine()
else:
print("Feature not implemented yet")
Menu.load_main_menu()
else:
if key == "Up":
Menu.cursor_position = (Menu.cursor_position - 1) % 4
elif key == "Down":
Menu.cursor_position = (Menu.cursor_position + 1) % 4
Menu.select_arrow.y = y0 - Menu.LINE_HEIGHT * Menu.cursor_position
def keyboard_cb(key):
global speed, rocket, countdown, angle, gravity
if key == 'Escape':
engine.exit_engine()
if key == 'Up':
speed -= speedboost
rocket.shape = skin + " powered"
countdown = 20
gravity = 0
if key == 'Left':
angle += 30
if key == 'Right':
angle -= 30
if key == 'm':
speed = 0
rocket = Rocket()
engine.add_obj(rocket)
def genericGroundCollisionCall(ship, gnd):
step = 0
orig = 0
for i in range(len(gnd.ground) - 1):
x0 = gnd.ground[i][0]
y0 = gnd.ground[i][1]
x1 = gnd.ground[i + 1][0]
y1 = gnd.ground[i + 1][1]
y = ship.y + HEIGHT / 2
x = ship.x
if x0 <= ship.x and ship.x <= x1: # Here we are!
a = -1 * (y1 - y0) / (x1 - x0)
b = 1
c = -1 * y0 + x0 * (y1 - y0) / (x1 - x0)
d = abs(a * x + b * y + c) / math.sqrt(a ** 2 + b ** 2)
print(math.sqrt(xspeed ** 2 + yspeed ** 2))
if (d <= 2 * basesize and a != 0) or (
d <= 2 * basesize and a == 0 and (abs(shiphead) >= 15 or math.sqrt(xspeed ** 2 + yspeed ** 2) >= 1)
):
banner("Crashed!")
engine.exit_engine()
elif d <= 2 * basesize and a == 0 and abs(shiphead) < 15:
banner("Landed!")
engine.exit_engine()
def citygoboom():
global cities
cities = cities - 1
if cities == 0:
banner('LOSER!')
engine.exit_engine()
def collision_sh_bl(lander, bl):
if math.sqrt((bl.x - lander.x) ** 2 + (lander.y - bl.y) ** 2) \
<= 2 * basesize:
banner("Killed by bullet")
engine.exit_engine()
def collision_enemy(en, lander):
if math.sqrt((lander.x - en.x) ** 2 + (lander.y - en.y) ** 2) \
<= 4 * basesize:
banner("Crash against enemy")
engine.exit_engine()
def collision_cb_SL(sun, lander):
if math.sqrt((lander.x - sun.x) ** 2 + (lander.y - sun.y) ** 2) \
<= sundiam/2 + 2 * basesize:
banner("Sunned!")
engine.exit_engine()
def delete(self):
super().delete()
engine.exit_engine()
def delete(self):
"""
End the game.
"""
super().delete()
engine.exit_engine()
def quit_cb(key): if key == 'q' or key == 'Q': engine.exit_engine()
def demo_keypress_cb(dummy): global exitdemo exitdemo = True engine.exit_engine()
def citygoboom():
global cities
cities = cities - 1
if cities == 0:
banner('LOSER!')
engine.exit_engine()
def keyboard_cb(key):
if key == 'space':
box = Box()
engine.add_obj(box)
if key == 'Escape' :
engine.exit_engine()
