import simplegui
import math
import random
WIDTH = 800
HEIGHT = 600
score = 0
lives = 3
time = 0.5
started = False
rock_group = set()
missile_group = set()
explosion_group = set()
rock_count = 0
def process_sprite_group(group,canvas):
for s in list(group):
s.draw(canvas)
if s.update() == True:
group.remove(s)
def group_collide(group,other_object):
c_num = 0
for s in list(group):
if s.collide(other_object) == True:
rock_avel = random.random() * .2 - .1
explosion = Sprite(s.get_position(), [0,0], 0, rock_avel, explosion_image, explosion_info,explosion_sound)
explosion_group.add(explosion)
group.remove(s)
c_num += 1
return c_num
def group_group_collide(group1,group2):
c_num = 0
for s in list(group2):
g1_c = group_collide(group1,s)
if g1_c > 0 :
group2.remove(s)
c_num += g1_c
return c_num
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
debris_info = ImageInfo([320, 240], [640, 480])
debris_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/debris2_blue.png")
nebula_info = ImageInfo([400, 300], [800, 600])
nebula_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/nebula_blue.png")
splash_info = ImageInfo([200, 150], [400, 300])
splash_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/splash.png")
ship_info = ImageInfo([45, 45], [90, 90], 35)
ship_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/double_ship.png")
missile_info = ImageInfo([5,5], [10, 10], 3, 70)
missile_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/shot2.png")
asteroid_info = ImageInfo([45, 45], [90, 90], 40)
asteroid_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/asteroid_blue.png")
explosion_info = ImageInfo([64, 64], [128, 128], 17, 24, True)
explosion_image = simplegui.load_image("http://commondatastorage.googleapis.com/codeskulptor-assets/lathrop/explosion_alpha.png")
soundtrack= simplegui.load_sound("http://commondatastorage.googleapis.com/codeskulptor-assets/sounddogs/soundtrack.mp3")
missile_sound = simplegui.load_sound("http://commondatastorage.googleapis.com/codeskulptor-assets/sounddogs/missile.mp3")
missile_sound.set_volume(.5)
ship_thrust_sound = simplegui.load_sound("http://commondatastorage.googleapis.com/codeskulptor-assets/sounddogs/thrust.mp3")
explosion_sound = simplegui.load_sound("http://commondatastorage.googleapis.com/codeskulptor-assets/sounddogs/explosion.mp3")
def angle_to_vector(ang):
return [math.cos(ang), math.sin(ang)]
def dist(p, q):
return math.sqrt((p[0] - q[0]) ** 2 + (p[1] - q[1]) ** 2)
class Ship:
def __init__(self, pos, vel, angle, image, info):
self.pos = [pos[0], pos[1]]
self.vel = [vel[0], vel[1]]
self.thrust = False
self.angle = angle
self.angle_vel = 0
self.image = image
self.image_center = info.get_center()
self.image_size = info.get_size()
self.radius = info.get_radius()
def draw(self,canvas):
if self.thrust:
canvas.draw_image(self.image, [self.image_center[0] + self.image_size[0], self.image_center[1]] , self.image_size,
self.pos, self.image_size, self.angle)
else:
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.pos[0] + self.vel[0]) % WIDTH
self.pos[1] = (self.pos[1] + self.vel[1]) % HEIGHT
if self.thrust:
acc = angle_to_vector(self.angle)
self.vel[0] += acc[0] * .1
self.vel[1] += acc[1] * .1
self.vel[0] *= .99
self.vel[1] *= .99
def set_thrust(self, on):
self.thrust = on
if on:
ship_thrust_sound.rewind()
ship_thrust_sound.play()
else:
ship_thrust_sound.pause()
def increment_angle_vel(self):
self.angle_vel += .05
def decrement_angle_vel(self):
self.angle_vel -= .05
def shoot(self):
forward = angle_to_vector(self.angle)
missile_pos = [self.pos[0] + self.radius * forward[0], self.pos[1] + self.radius * forward[1]]
missile_vel = [self.vel[0] + 6 * forward[0], self.vel[1] + 6 * forward[1]]
m = Sprite(missile_pos, missile_vel, self.angle, 0, missile_image, missile_info, missile_sound)
missile_group.add(m)
def get_radius(self): return self.radius
def get_position(self): return self.pos
def tooclose(self,other_object):
other = other_object.get_position()
dist2 = dist(self.pos,other)
rad2 = self.radius + other_object.get_radius()
if dist2 < rad2*1.5 :
return True
else:
return False
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):
if self.animated == False:
canvas.draw_image(self.image, self.image_center, self.image_size,
self.pos, self.image_size, self.angle)
elif self.animated == True:
i = self.age
center = [self.image_center[0]+i*self.image_size[0],self.image_center[1]]
canvas.draw_image(self.image, center, self.image_size,
self.pos, self.image_size, self.angle)
def update(self):
self.angle += self.angle_vel
self.age += 1
self.pos[0] = (self.pos[0] + self.vel[0]) % WIDTH
self.pos[1] = (self.pos[1] + self.vel[1]) % HEIGHT
if self.age < self.lifespan:
return False
else:
return True
def collide(self,other_object):
other = other_object.get_position()
dist2 = dist(self.pos,other)
rad2 = self.radius + other_object.get_radius()
if dist2 < rad2 :
return True
else:
return False
def get_radius(self): return self.radius
def get_position(self): return self.pos
def keydown(key):
if key == simplegui.KEY_MAP['left']:
my_ship.decrement_angle_vel()
elif key == simplegui.KEY_MAP['right']:
my_ship.increment_angle_vel()
elif key == simplegui.KEY_MAP['up']:
my_ship.set_thrust(True)
elif key == simplegui.KEY_MAP['space']:
my_ship.shoot()
def keyup(key):
if key == simplegui.KEY_MAP['left']:
my_ship.increment_angle_vel()
elif key == simplegui.KEY_MAP['right']:
my_ship.decrement_angle_vel()
elif key == simplegui.KEY_MAP['up']:
my_ship.set_thrust(False)
def click(pos):
global started,lives,score
center = [WIDTH / 2, HEIGHT / 2]
size = splash_info.get_size()
inwidth = (center[0] - size[0] / 2) < pos[0] < (center[0] + size[0] / 2)
inheight = (center[1] - size[1] / 2) < pos[1] < (center[1] + size[1] / 2)
if (not started) and inwidth and inheight:
started = True
lives = 3
score = 0
soundtrack.play()
def draw(canvas):
global time, started, lives,score, rock_count
time += 1
center = debris_info.get_center()
size = debris_info.get_size()
wtime = (time / 8) % center[0]
canvas.draw_image(nebula_image, nebula_info.get_center(), nebula_info.get_size(), [WIDTH / 2, HEIGHT / 2], [WIDTH, HEIGHT])
canvas.draw_image(debris_image, [center[0] - wtime, center[1]], [size[0] - 2 * wtime, size[1]],
[WIDTH / 2 + 1.25 * wtime, HEIGHT / 2], [WIDTH - 2.5 * wtime, HEIGHT])
canvas.draw_image(debris_image, [size[0] - wtime, center[1]], [2 * wtime, size[1]],
[1.25 * wtime, HEIGHT / 2], [2.5 * wtime, HEIGHT])
canvas.draw_text("Lives", [50, 50], 22, "White")
canvas.draw_text("Score", [680, 50], 22, "White")
canvas.draw_text(str(lives), [50, 80], 22, "White")
canvas.draw_text(str(score), [680, 80], 22, "White")
my_ship.draw(canvas)
process_sprite_group(rock_group,canvas)
process_sprite_group(missile_group,canvas)
process_sprite_group(explosion_group,canvas)
my_ship.update()
for r in rock_group: r.update()
g1 =group_collide(rock_group,my_ship)
lives -= g1
rock_count -= g1
g1 = group_group_collide(rock_group,missile_group)
score += g1
rock_count -= g1
if lives < 1:
rock_count = 0
for r in list(rock_group):
rock_group.discard(r)
started = False
soundtrack.pause()
if not started:
canvas.draw_image(splash_image, splash_info.get_center(),
splash_info.get_size(), [WIDTH / 2, HEIGHT / 2],
splash_info.get_size())
def rock_spawner():
global rock_group,rock_count
if rock_count <= 12 and started == True:
rock_pos = [random.randrange(0, WIDTH), random.randrange(0, HEIGHT)]
rock_vel = [random.random() * .6 - .3, random.random() * .6 - .3]
rock_avel = random.random() * .2 - .1
rock = Sprite(rock_pos, rock_vel, 0, rock_avel, asteroid_image, asteroid_info)
if my_ship.tooclose(rock) == False:
rock_group.add(rock)
rock_count += 1
frame = simplegui.create_frame("Asteroids", WIDTH, HEIGHT)
my_ship = Ship([WIDTH / 2, HEIGHT / 2], [0, 0], 0, ship_image, ship_info)
a_missile = Sprite([2 * WIDTH / 3, 2 * HEIGHT / 3], [-1,1], 0, 0, missile_image, missile_info, missile_sound)
frame.set_keyup_handler(keyup)
frame.set_keydown_handler(keydown)
frame.set_mouseclick_handler(click)
frame.set_draw_handler(draw)
timer = simplegui.create_timer(2000.0, rock_spawner)
timer.start()
frame.start()