# Sprite class emo

import simplegui

import math

# helper class to organize image information

class ImageInfo:

def __init__(self, center, size, radius = 0, lifespan = None, animated = False):

self.center = center

self.size = size

self.radius = radius

if lifespan:

self.lifespan = lifespan

else:

self.lifespan = float('inf')

self.animated = animated

def get_center(self):

return self.center

def get_size(self):

return self.size

def get_radius(self):

return self.radius

def get_lifespan(self):

return self.lifespan

def get_animated(self):

return self.animated

# load ship image

asteroid_info = ImageInfo([45, 45], [90, 90], 40)

asteroid_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/asteroid_blue.png")

# Sprite class

class Sprite():

def __init__(self, pos, vel, ang, ang_vel, image, info, sound = None):

self.pos = [pos[0],pos[1]]

self.vel = [vel[0],vel[1]]

self.angle = ang

self.angle_vel = ang_vel

self.image = image

self.image_center = info.get_center()

self.image_size = info.get_size()

self.radius = info.get_radius()

self.lifespan = info.get_lifespan()

self.animated = info.get_animated()

self.age = 0

if sound:

sound.rewind()

sound.play()

def draw(self, canvas):

#canvas.draw_circle(self.pos, self.radius, 1, "Red", "Red")

canvas.draw_image(self.image, self.image_center, self.image_size, self.pos, self.image_size, self.angle)

def update(self):

self.angle += self.angle_vel

self.pos[0] += self.vel[0]

self.pos[1] += self.vel[1]

def draw(canvas):

# draw ship and sprites

a_rock.draw(canvas)

# update ship and sprites

a_rock.update()

# initialize frame

frame = simplegui.create_frame("Sprite demo", 800, 600)

# initialize ship and two sprites

a_rock = Sprite([400, 300], [0.3, 0.4], 0, 0.1, asteroid_image, asteroid_info)

# register handlers

frame.set_draw_handler(draw)

# get things rolling

frame.start()