gameRole.py

# -*- coding: utf-8 -*-
"""
Created on Wed Sep 11 16:36:03 2013

@author: Leo
"""

import pygame

SCREEN_WIDTH = 480
SCREEN_HEIGHT = 800

TYPE_SMALL = 1
TYPE_MIDDLE = 2
TYPE_BIG = 3

# 子弹类
class Bullet(pygame.sprite.Sprite):
 def __init__(self, bullet_img, init_pos):
 pygame.sprite.Sprite.__init__(self)
 self.image = bullet_img
 self.rect = self.image.get_rect()
 self.rect.midbottom = init_pos
 self.speed = 10

 def move(self):
 self.rect.top -= self.speed

# 玩家类
class Player(pygame.sprite.Sprite):
 def __init__(self, plane_img, player_rect, init_pos):
 pygame.sprite.Sprite.__init__(self)
 self.image = [] # 用来存储玩家对象精灵图片的列表
 for i in range(len(player_rect)):
 self.image.append(plane_img.subsurface(player_rect[i]).convert_alpha())
 self.rect = player_rect[0] # 初始化图片所在的矩形
 self.rect.topleft = init_pos # 初始化矩形的左上角坐标
 self.speed = 8 # 初始化玩家速度，这里是一个确定的值
 self.bullets = pygame.sprite.Group() # 玩家飞机所发射的子弹的集合
 self.img_index = 0 # 玩家精灵图片索引
 self.is_hit = False # 玩家是否被击中

 def shoot(self, bullet_img):
 bullet = Bullet(bullet_img, self.rect.midtop)
 self.bullets.add(bullet)

 def moveUp(self):
 if self.rect.top <= 0:
 self.rect.top = 0
 else:
 self.rect.top -= self.speed

 def moveDown(self):
 if self.rect.top >= SCREEN_HEIGHT - self.rect.height:
 self.rect.top = SCREEN_HEIGHT - self.rect.height
 else:
 self.rect.top += self.speed

 def moveLeft(self):
 if self.rect.left <= 0:
 self.rect.left = 0
 else:
 self.rect.left -= self.speed

 def moveRight(self):
 if self.rect.left >= SCREEN_WIDTH - self.rect.width:
 self.rect.left = SCREEN_WIDTH - self.rect.width
 else:
 self.rect.left += self.speed

# 敌人类
class Enemy(pygame.sprite.Sprite):
 def __init__(self, enemy_img, enemy_down_imgs, init_pos):
 pygame.sprite.Sprite.__init__(self)
 self.image = enemy_img
 self.rect = self.image.get_rect()
 self.rect.topleft = init_pos
 self.down_imgs = enemy_down_imgs
 self.speed = 2
 self.down_index = 0

 def move(self):
 self.rect.top += self.speed