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56 lines
1.7 KiB
56 lines
1.7 KiB
import pygame as pg
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from random import randint
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from .sprite import Sprite
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class Asteroid(Sprite):
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COOLTIME = 15
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SPEED = 2
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COLOR = (0,0,255)
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BASE_SIZE = 30
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N_CHILDREN = 2
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def __init__(self, map_rect=None, map_pos=(0,0), velocity=(0, SPEED), size_lev=3):
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self.size = size_lev * self.BASE_SIZE
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self.size_lev = size_lev
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super().__init__((self.size,)*2)
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self.image.fill(self.image.get_colorkey())
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pg.draw.circle(
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self.image,
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self.COLOR,
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self.image.get_rect().center,
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self.image.get_rect().width/2,
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)
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self.map_pos = pg.math.Vector2(map_pos)
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if map_rect is not None:
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if randint(0,1)==0:
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self.map_pos.x = 0 if randint(0,1)==0 else map_rect.width -1
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self.map_pos.y = randint(0,map_rect.height-1)
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else:
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self.map_pos.y = 0 if randint(0,1)==0 else map_rect.height -1
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self.map_pos.x = randint(0,map_rect.width-1)
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self.velocity = pg.math.Vector2(velocity)
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self.velocity.rotate_ip(randint(0,359))
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def update(self, map_rect):
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self.map_pos += self.velocity
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self.map_pos.x %= map_rect.w
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self.map_pos.y %= map_rect.h
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self.rect.x = (self.map_pos.x - self.rect.w/2 - map_rect.x) % map_rect.w
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self.rect.y = (self.map_pos.y - self.rect.w/2 - map_rect.y) % map_rect.h
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def breakup(self):
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new_size = self.size_lev-1
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self.kill()
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children = list()
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if new_size > 0:
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for i in range(self.N_CHILDREN):
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children.append(Asteroid(
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map_pos=self.map_pos.copy(),
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velocity=self.velocity.copy()*1.2,
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size_lev=new_size,
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))
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return children
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