def render(self):
"draw white circle with red line pointing to the current angle"
center = Vect(self.radius, self.radius)
end = center.add_polar(self.radius, self.angle)
pygame.draw.circle(self.surf, (255, 255, 255), center, self.radius)
pygame.draw.line(self.surf, (255, 0, 0), center, end)
return self.surf, self._surf_coord()
def spawn_asteroid(self):
"spawn asteroid at random position, not in the ship's danger zone"
pos = Vect.get_random(self.width, self.height)
ast = Asteroid(pos)
while self.ship.in_danger_zone(ast):
pos = Vect.get_random(self.width, self.height)
ast = Asteroid(pos)
return ast
def shoot(self):
"shoot a projectile and return it, None if gun is still recharging"
if (self.age - self.last_shoot_time) >= self.RECHARGE_TIME:
vel = Vect(self.vel.x, self.vel.y)
pos = Vect(self.pos.x, self.pos.y)
pos = pos.add_polar(self.radius, self.angle)
proj = Projectile(pos, vel, self.angle)
self.last_shoot_time = self.age
return proj
def __init__(self, pos, speed=None, angle=None):
vel = Vect(0, 0)
if not speed:
speed = random.random() * self.MAX_SPEED
if not angle:
angle = utils.random_angle()
vel += vel.add_polar(speed, angle)
super(Asteroid, self).__init__(pos, vel, angle)
self.ang_vel = random.random() * self.MAX_ANG_VEL
self.ang_vel *= random.choice([1, -1])
self.image = pygame.image.load("assets/images/asteroid_blue.png")
self.exp_image = pygame.image.load("assets/images/explosion.png")
self.sound_explosion = pygame.mixer.Sound("assets/sounds/explode.wav")
self.explosion_time = None
