def render(self, gfx):
# Score
font = pygame.font.SysFont("OCR A Extended", 16)
label = font.render(repr(self.score), 1, (255, 255, 255))
gfx.blit(label, (10, 10))
# Ships
for i in range(self.ships):
ship = Ship()
ship.pos.x = (i * 16) + 14
ship.pos.y = 40
ship.scale(0.75)
ship.update()
ship.render(gfx)
def render(self, gfx):
# Score
font = pygame.font.SysFont("OCR A Extended", 16)
label = font.render(repr(self.score), 1, (255, 255, 255))
gfx.blit(label, (10, 10))
# Ships
for i in range(self.ships):
ship = Ship()
ship.pos.x = (i * 16) + 14
ship.pos.y = 40
ship.scale(0.75)
ship.update()
ship.render(gfx)
class Asteroids(object):
def __init__(self):
self.stats = Statistics()
self.mixer = Mixer()
self.particles = Particles()
self.ship = Ship()
self.bullets = []
self.asteroids = []
self.saucers = []
self.explosions = []
self.stars = []
self.time_to_level = 0
self.saucer_elapsed = 0
# Process key state events
def process_key_events(self, keys):
if self.ship.alive:
# Ship thrust
if keys.get(K_UP, False):
self.ship.forward_thrust()
self.emit_vapor_trail()
self.mixer.thrust.loop()
elif keys.get(K_DOWN, False):
self.ship.backward_thrust()
# Ship rotation
if keys.get(K_LEFT, False):
self.ship.rotate_left()
elif keys.get(K_RIGHT, False):
self.ship.rotate_right()
# Fire bullet
if keys.get(K_SPACE, False):
self.fire_ship_bullet()
keys[K_SPACE] = False
# Stop thrust
if not keys.get(K_UP, False):
self.mixer.thrust.stop()
# Update all sprites
def update(self):
self.check_collisions()
self.mixer.update()
self.particles.update()
self.ship.update()
# Update bullets
self.bullets[:] = [b for b in self.bullets if b.alive]
for bullet in self.bullets:
bullet.update()
# Update asteroids
self.asteroids[:] = [a for a in self.asteroids if a.alive]
for asteroid in self.asteroids:
asteroid.update()
# Avoid asteroids in close proximity
for saucer in self.saucers:
if saucer.proximity(asteroid, asteroid.radius * 3):
saucer.avoid(asteroid)
break
# Update saucers
if self.time_for_saucer():
self.spawn_saucer()
self.saucers[:] = [s for s in self.saucers if s.alive]
for saucer in self.saucers:
saucer.update()
if not saucer.alive:
self.mixer.stop_live_saucer(saucer)
elif saucer.time_to_fire < 0:
self.fire_saucer_bullet(saucer)
# Update explosions
self.explosions[:] = [e for e in self.explosions if e.alive]
for explosion in self.explosions:
explosion.update()
# Update stars.
for star in self.stars:
star.update()
# Check for earned extra life
if self.stats.earned_life():
self.stats.extras += 1
self.stats.ships += 1
self.mixer.extra.play(5)
# Countdown to next level
if self.level_complete():
if self.time_to_level > 0:
self.time_to_level -= 1
if self.time_to_level == 0:
self.next_level()
elif self.time_to_level == 0:
self.time_to_level = 100
self.mixer.music.stop()
# Render all sprites
def render(self, gfx):
self.stats.render(gfx)
self.particles.render(gfx)
if self.ship.alive:
self.ship.render(gfx)
for sprite in self.bullets + self.asteroids + self.saucers + self.explosions + self.stars:
sprite.render(gfx)
# Check sprite collisions
def check_collisions(self):
# Asteroid collisions
for asteroid in self.asteroids:
# Asteroid/Ship collisions
if self.ship.alive and asteroid.collision(self.ship):
self.ship_destroyed()
# Asteroid/Saucer collisions
for saucer in self.saucers:
if saucer.collision(asteroid):
self.saucer_destroyed(saucer)
# Asteroid/Bullet collisions
for bullet in self.bullets:
if bullet.collision(asteroid):
self.asteroid_destroyed(asteroid)
bullet.alive = False
if bullet.from_ship:
self.stats.score += asteroid.score_value()
self.stats.destroyed += 1
# Bullet collisions
for bullet in self.bullets:
# Bullet/Ship collision
if self.ship.alive and bullet.collision(self.ship):
self.ship_destroyed()
# Bullet/Saucer collisions
for saucer in self.saucers:
if bullet.collision(saucer):
self.saucer_destroyed(saucer)
bullet.alive = False
if bullet.from_ship:
self.stats.score += saucer.score_value()
self.stats.destroyed += 1
# Saucer/Ship collisions
for saucer in self.saucers:
if self.ship.alive and saucer.collision(self.ship):
self.ship_destroyed()
# Star collisions.
for star in self.stars:
star.alive = True
for sprite in self.asteroids + self.saucers:
if star.collision(sprite):
star.alive = False
break
else:
if star.collision(self.ship):
star.alive = False
# Fire a bullet in the direction the ship is pointing
def fire_ship_bullet(self):
if len([b for b in self.bullets if b.from_ship]) < 5:
bullet = self.ship.fire_bullet()
self.bullets.append(bullet)
self.mixer.fire.play()
self.stats.fired += 1
# Fire a bullet from a saucer
def fire_saucer_bullet(self, saucer):
bullet = saucer.fire_bullet(self.ship.pos)
self.bullets.append(bullet)
# Create a vapor trail behind the moving ship
def emit_vapor_trail(self):
bounds = self.ship.vapor_bounds_range()
for pts in bounds:
self.particles.generate_particles(pts)
# Kill ship and explode
def ship_destroyed(self):
self.explosions.append(Explosion(self.ship))
self.mixer.thrust.stop()
self.mixer.medium_bang.play()
self.stats.ships -= 1
self.ship.alive = False
if not self.game_over():
self.ship.respawn()
# Kill asteroid and explode
def asteroid_destroyed(self, asteroid):
self.explosions.append(Explosion(asteroid))
self.asteroids.extend(asteroid.split())
self.mixer.play_asteroid_bang(asteroid)
asteroid.alive = False
# Kill saucer and explode
def saucer_destroyed(self, saucer):
self.explosions.append(Explosion(saucer))
self.mixer.stop_live_saucer(saucer)
self.mixer.play_saucer_bang(saucer)
saucer.alive = False
# Def spawn a new saucer
def spawn_saucer(self):
if randint(1, 7) < self.stats.level:
self.saucers.append(Saucer(Saucer.Small))
self.mixer.small_saucer.loop()
else:
self.saucers.append(Saucer(Saucer.Large))
self.mixer.large_saucer.loop()
# Return if time for a saucer
def time_for_saucer(self):
if self.game_over():
return False
self.saucer_elapsed += 1
factor = 800 - self.saucer_elapsed
factor += randint(0, len(self.asteroids) * 5)
factor -= randint(0, self.stats.level * 50)
if factor < 0:
self.saucer_elapsed = 0
return factor < 0
# Start a new game
def new_game(self):
self.stars = []
sec = Dimension(ScreenSize.width / 8, ScreenSize.height / 5)
for x in xrange(8):
for y in xrange(5):
bounds = Rectangle(x * sec.width, y * sec.height, sec.width,
sec.height)
self.stars.append(Star(bounds))
self.stats = Statistics()
self.asteroids = []
self.saucers = []
self.bullets = []
self.ship = Ship()
self.saucer_elapsed = 0
self.next_level()
# Start the next level
def next_level(self):
self.stats.level += 1
for i in xrange(self.stats.level + 2):
self.asteroids.append(Asteroid())
self.mixer.music.play()
# Return if the level is complete
def level_complete(self):
return len(self.asteroids) == 0 and len(self.saucers) == 0
# Return if the game is over
def game_over(self):
return self.stats.ships == 0
class Asteroids(object):
def __init__(self):
self.stats = Statistics()
self.mixer = Mixer()
self.particles = Particles()
self.ship = Ship()
self.bullets = []
self.asteroids = []
self.saucers = []
self.explosions = []
self.stars = []
self.time_to_level = 0
self.saucer_elapsed = 0
# Process key state events
def process_key_events(self, keys):
if self.ship.alive:
# Ship thrust
if keys.get(K_UP, False):
self.ship.forward_thrust()
self.emit_vapor_trail()
self.mixer.thrust.loop()
elif keys.get(K_DOWN, False):
self.ship.backward_thrust()
# Ship rotation
if keys.get(K_LEFT, False):
self.ship.rotate_left()
elif keys.get(K_RIGHT, False):
self.ship.rotate_right()
# Fire bullet
if keys.get(K_SPACE, False):
self.fire_ship_bullet()
keys[K_SPACE] = False
# Stop thrust
if not keys.get(K_UP, False):
self.mixer.thrust.stop()
# Update all sprites
def update(self):
self.check_collisions()
self.mixer.update()
self.particles.update()
self.ship.update()
# Update bullets
self.bullets[:] = [b for b in self.bullets if b.alive]
for bullet in self.bullets:
bullet.update()
# Update asteroids
self.asteroids[:] = [a for a in self.asteroids if a.alive]
for asteroid in self.asteroids:
asteroid.update()
# Avoid asteroids in close proximity
for saucer in self.saucers:
if saucer.proximity(asteroid, asteroid.radius * 3):
saucer.avoid(asteroid)
break
# Update saucers
if self.time_for_saucer():
self.spawn_saucer()
self.saucers[:] = [s for s in self.saucers if s.alive]
for saucer in self.saucers:
saucer.update()
if not saucer.alive:
self.mixer.stop_live_saucer(saucer)
elif saucer.time_to_fire < 0:
self.fire_saucer_bullet(saucer)
# Update explosions
self.explosions[:] = [e for e in self.explosions if e.alive]
for explosion in self.explosions:
explosion.update()
# Update stars.
for star in self.stars:
star.update()
# Check for earned extra life
if self.stats.earned_life():
self.stats.extras += 1
self.stats.ships += 1
self.mixer.extra.play(5)
# Countdown to next level
if self.level_complete():
if self.time_to_level > 0:
self.time_to_level -= 1
if self.time_to_level == 0:
self.next_level()
elif self.time_to_level == 0:
self.time_to_level = 100
self.mixer.music.stop()
# Render all sprites
def render(self, gfx):
self.stats.render(gfx)
self.particles.render(gfx)
if self.ship.alive:
self.ship.render(gfx)
for sprite in self.bullets + self.asteroids + self.saucers + self.explosions + self.stars:
sprite.render(gfx)
# Check sprite collisions
def check_collisions(self):
# Asteroid collisions
for asteroid in self.asteroids:
# Asteroid/Ship collisions
if self.ship.alive and asteroid.collision(self.ship):
self.ship_destroyed()
# Asteroid/Saucer collisions
for saucer in self.saucers:
if saucer.collision(asteroid):
self.saucer_destroyed(saucer)
# Asteroid/Bullet collisions
for bullet in self.bullets:
if bullet.collision(asteroid):
self.asteroid_destroyed(asteroid)
bullet.alive = False
if bullet.from_ship:
self.stats.score += asteroid.score_value()
self.stats.destroyed += 1
# Bullet collisions
for bullet in self.bullets:
# Bullet/Ship collision
if self.ship.alive and bullet.collision(self.ship):
self.ship_destroyed()
# Bullet/Saucer collisions
for saucer in self.saucers:
if bullet.collision(saucer):
self.saucer_destroyed(saucer)
bullet.alive = False
if bullet.from_ship:
self.stats.score += saucer.score_value()
self.stats.destroyed += 1
# Saucer/Ship collisions
for saucer in self.saucers:
if self.ship.alive and saucer.collision(self.ship):
self.ship_destroyed()
# Star collisions.
for star in self.stars:
star.alive = True
for sprite in self.asteroids + self.saucers:
if star.collision(sprite):
star.alive = False
break
else:
if star.collision(self.ship):
star.alive = False
# Fire a bullet in the direction the ship is pointing
def fire_ship_bullet(self):
if len([b for b in self.bullets if b.from_ship]) < 5:
bullet = self.ship.fire_bullet()
self.bullets.append(bullet)
self.mixer.fire.play()
self.stats.fired += 1
# Fire a bullet from a saucer
def fire_saucer_bullet(self, saucer):
bullet = saucer.fire_bullet(self.ship.pos)
self.bullets.append(bullet)
# Create a vapor trail behind the moving ship
def emit_vapor_trail(self):
bounds = self.ship.vapor_bounds_range()
for pts in bounds:
self.particles.generate_particles(pts)
# Kill ship and explode
def ship_destroyed(self):
self.explosions.append(Explosion(self.ship))
self.mixer.thrust.stop()
self.mixer.medium_bang.play()
self.stats.ships -= 1
self.ship.alive = False
if not self.game_over():
self.ship.respawn()
# Kill asteroid and explode
def asteroid_destroyed(self, asteroid):
self.explosions.append(Explosion(asteroid))
self.asteroids.extend(asteroid.split())
self.mixer.play_asteroid_bang(asteroid)
asteroid.alive = False
# Kill saucer and explode
def saucer_destroyed(self, saucer):
self.explosions.append(Explosion(saucer))
self.mixer.stop_live_saucer(saucer)
self.mixer.play_saucer_bang(saucer)
saucer.alive = False
# Def spawn a new saucer
def spawn_saucer(self):
if randint(1, 7) < self.stats.level:
self.saucers.append(Saucer(Saucer.Small))
self.mixer.small_saucer.loop()
else:
self.saucers.append(Saucer(Saucer.Large))
self.mixer.large_saucer.loop()
# Return if time for a saucer
def time_for_saucer(self):
if self.game_over():
return False
self.saucer_elapsed += 1
factor = 800 - self.saucer_elapsed
factor += randint(0, len(self.asteroids) * 5)
factor -= randint(0, self.stats.level * 50)
if factor < 0:
self.saucer_elapsed = 0
return factor < 0
# Start a new game
def new_game(self):
self.stars = []
sec = Dimension(ScreenSize.width / 8, ScreenSize.height / 5)
for x in xrange(8):
for y in xrange(5):
bounds = Rectangle(x * sec.width, y * sec.height, sec.width, sec.height)
self.stars.append(Star(bounds))
self.stats = Statistics()
self.asteroids = []
self.saucers = []
self.bullets = []
self.ship = Ship()
self.saucer_elapsed = 0
self.next_level()
# Start the next level
def next_level(self):
self.stats.level += 1
for i in xrange(self.stats.level + 2):
self.asteroids.append(Asteroid())
self.mixer.music.play()
# Return if the level is complete
def level_complete(self):
return len(self.asteroids) == 0 and len(self.saucers) == 0
# Return if the game is over
def game_over(self):
return self.stats.ships == 0