On 03/15/2013 06:46 PM, Joshua Wilkerson wrote:
The program keeps telling me that the __init__ in Rock takes two arguments and
only one is given. Ideas?
The point of the game is to dodge falling rocks. Two more appear every time one
reaches the bottom of the screen.
# Avalanche, a dodging game
# Written by Josh Wilkerson
# Dodge falling rocks, two new rocks appear every time a rock hits the bottom.
from livewires import games, color
import random
games.init(screen_width = 640, screen_height = 480, fps = 50)
class Chef(games.Sprite):
"""
A chef controlled by the player to dodge falling rocks.
"""
image = games.load_image("chef.jpg")
def __init__(self, y = 450):
""" Initialize Chef object and create Text object for score. """
super(Chef, self).__init__(image = Chef.image,
x = games.mouse.x,
bottom = games.screen.height)
self.score = games.Text(value = 0, size = 25, color = color.black,
top = 5, right = games.screen.width - 10)
games.screen.add(self.score)
This following update() is probably indented wrong. Currently it's a
regular function, not a method, so having a paramter 'self' is just
weird. If you want it to be part of the class, you'd better indent it
to match the other defs.
def update(self):
""" Move to mouse position x. """
self.x = games.mouse.x
if self.left < 0:
self.left = 0
if self.right > games.screen.width:
self.right = games.screen.width
self.check_catch()
def check_hit(self):
""" Check if hit by rcok. """
for rock in self.overlapping_sprites:
self.end_game()
self.destroy()
class Rock(games.Sprite):
"""
A rock which falls to the ground.
"""
image = games.load_image("rock.jpg")
speed = 1
def __init__(self, x, y = 90):
This defines a method that can take either two or three arguments. The
third one has a default value.
""" Initiate a rock object. """
super(Rock, self).__init__(image = Rock.image,
x = x, y = y,
dy = rock.speed)
def update(self):
""" Check if bottom edge has reached screen bottom. """
if self.bottom > games.screen.height:
SPAWN = 2
Rock.SPAWN
def handle_hit(self):
""" Destroy self if hits chef. """
self.destroy()
def end_game(self):
""" End the game. """
end_message = games.Message(value = "Game Over",
size = 90,
color = color.red,
x = games.screen.width / 2,
y = games.screen.height / 2,
lifetime = 5 * games.screen.fps,
after_death = games.screen.quit)
games.screen.add(end_message)
class Dropper(games.Sprite):
"""
An invisible object that drops the rocks.
"""
def __init___(self, y = 55, speed = 2, odds_change = 200):
""" Initialize the Dropper object. """
super(Dropper, self).__init__(x = games.screen.width / 2,
y = y,
dx = speed)
self.odds_change = odds_change
self.time_til_drop = 0
def update(self):
""" Determines if direction needs to be reversed. """
if self.left < 0 or self.right > games.screen.width:
self.dx = -self.dx
elif random.randrange(self.odds_change) == 0:
self.dx = -self.dx
self.check_drop()
def check_drop(self):
""" Decreases countdown or drop rock and reset countdown. """
if self.time_til_drop > 0:
self.time_til_drop -= 1
else:
new_rock = Rock(x = self.x)
games.screen.add(new_rock)
# set buffer to approx 30% of rock height, regardless of pizza speed
self.time_til_drop = int(new_rock.height * 1.3 / Rock.speed) + 1
def main():
""" Play the game. """
backround_image = games.load_image("backround.jpg", transparent = False)
games.screen.backround = backround_image
the_chef = Chef()
games.screen.add(the_chef)
the_rock = Rock()
When creating a new instance of a class, there is an implied 'self'
argument, and you supply no others. So you're missing the 'x' argument.
It needs to get self & x, and you're only passing self.
games.screen.add(the_rock)
the_dropper = Dropper()
games.screen.add(the_dropper)
games.mouse.is_visible = False
games.screen.event_grab = True
gsmes.screen.mainloop()
# start it up
main()
This is the error.
Exception AttributeError: "'Rock' object has no attribute '_gone'" in <bound method
Rock.__del__ of <__main__.Rock object at 0x02C2F030>> ignored
Traceback (most recent call last):
File "C:\Users\Joshua\Projects\Avalanche\Avalanche.py", line 129, in <module>
main()
File "C:\Users\Joshua\Projects\Avalanche\Avalanche.py", line 117, in main
the_rock = Rock()
TypeError: __init__() takes at least 2 arguments (1 given)
--
DaveA
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