invader.py

import pygame, random

class Invader(pygame.sprite.Sprite):
    def __init__(self, type, x, y):
        super().__init__()
        self.type = type
        path = f"images/invader_{type}.png"
        self.image = pygame.image.load(path)
        self.rect = self.image.get_rect(topleft = (x,y))

    def update(self, direction):
        self.rect.x += direction


class BonusShip(pygame.sprite.Sprite):
    def __init__(self,screen_width):
        super().__init__()
        self.screen_width = screen_width
        self.image = pygame.image.load("images/bonus.png")

        x = random.choice([0, screen_width - self.image.get_width()])
        if x == 0:
            self.speed = 3
        else:
            self.speed = -3

        self.rect = self.image.get_rect(topleft = (x,40))

    def update(self):
        self.rect.x += self.speed
        if self.rect.right > self.screen_width:
            self.kill()
        elif self.rect.left < 0:
            self.kill()




class Boss(pygame.sprite.Sprite):
    def __init__(self, screen_width, screen_height):
        super().__init__()
        self.screen_width = screen_width
        self.screen_height = screen_height

        self.image = pygame.image.load("images/mucpng.png")
        self.rect = self.image.get_rect(topleft=((screen_width - self.image.get_width()) / 2, 40))

        self.health = 5
        self.hit_count = 0
        self.speed = 4

        self.direction_x = random.choice([-1, 1])
        self.direction_y = random.choice([-1, 1])
        self.change_direction_timer = pygame.time.get_ticks()  # Thời gian thay đổi hướng
        self.change_direction_interval = random.randint(500, 1500)  # Thay đổi hướng sau 500-1500 ms

    def update(self):

        self.rect.x += self.speed * self.direction_x
        self.rect.y += self.speed * self.direction_y


        if self.rect.left < 0 or self.rect.right > self.screen_width:
            self.direction_x *= -1


        if self.rect.top < 0 or self.rect.bottom > self.screen_height:
            self.direction_y *= -1


        if pygame.time.get_ticks() - self.change_direction_timer > self.change_direction_interval:
            self.direction_x = random.choice([-1, 1])
            self.direction_y = random.choice([-1, 1])
            self.change_direction_timer = pygame.time.get_ticks()
            self.change_direction_interval = random.randint(500, 1500)


    def take_damage(self):
        self.hit_count += 1
        if self.hit_count >= 15:
            self.speed += 1  # Tăng tốc độ mỗi khi bị bắn
        if self.hit_count >= self.health:
            self.kill()  # Giết boss khi hết máu