87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
import pygame
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# 子弹
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class Bullet(object):
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# 初始化子弹
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def __init__(self, scene, enemy=False, type=1):
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# 子弹移动速度
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self.speed = 2
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# 是否是敌人子弹
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self.is_enemy = enemy
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# self.is_boss = boss
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self.type = type
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self.image = pygame.image.load("./images/bullet/enemybullet1.png")
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# 子弹资源
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if self.is_enemy:
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if self.type == 1:
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# 加载敌人子弹图片
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self.image = pygame.image.load(
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"./images/bullet/enemybullet1.png")
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# 设置子弹移动方向
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self.speed = self.speed
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elif self.type == 2:
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# 加载敌人子弹图片
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self.image = pygame.image.load(
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"./images/bullet/enemybullet2.png")
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# 设置子弹移动方向
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self.speed = self.speed + 2
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elif self.type == 3:
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# 加载敌人子弹图片
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self.image = pygame.image.load(
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"./images/bullet/enemybullet3.png")
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# 设置子弹移动方向
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self.speed = self.speed + 4
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elif self.type == 0: # BOSS
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self.image = pygame.image.load(
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"./images/bullet/bossbullet.png")
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self.speed = 4
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else:
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# 加载敌人子弹默认图片
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self.image = pygame.image.load(
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"./images/bullet/enemybullet1.png")
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# 设置子弹移动方向
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self.speed = self.speed
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else:
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# 加载英雄子弹图片
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self.image = pygame.image.load("./images/bullet/herobullet.png")
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# 设置子弹移动方向
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self.speed = -self.speed
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self.visible = False
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# 持有主场景对象
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self.main_scene = scene
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# 获得子弹矩形(x, y, width, height)
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self.rect = self.image.get_rect()
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# 设置子弹位置
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def set_pos(self, x, y):
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self.rect[0] = x
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self.rect[1] = y
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# 设置子弹速度
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def set_speed(self, speed):
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if self.is_enemy:
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self.speed = speed
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else:
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self.speed = -speed
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# 子弹移动
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def action(self):
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if not self.visible:
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return
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# 假设飞机矩形为plane_rect(10, 20, 200, 300)
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# plane_rect.move_ip(10, 20), 那么结果是plane_rect(20, 40, 200, 300)
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# 也就是原矩形x和y坐标加上move_ip函数x和y坐标，就是当前矩形新位置
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self.rect.move_ip(0, self.speed)
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# 如果子弹超出场景范围,则设置为不可见
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if self.rect[1] < 0 or self.rect[1] > self.main_scene.size[1]:
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self.visible = False
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# 绘制子弹
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def draw(self):
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if not self.visible:
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return
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self.main_scene.scene.blit(self.image, (self.rect[0], self.rect[1]))
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