[TOC]
### 课前准确：
* 在`Windows`系统里安装`python`，参考 [安装python](https://www.kancloud.cn/k12edu/k_12/785427#Windowspython_4)
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### 本节课参考资料
* `Teach Your Kids to Code.pdf` 第八章：计数器和动漫
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### 一个简单的静态动漫
```
#chapter8_1.py
import pygame #导入动漫工具pygame
pygame.init() #初始化，相当于打开电视
screen = pygame.display.set_mode([800,600]) #建立一个动漫基地
keep_going = True
GREEN = (0,255,0) # RGB color triplet for GREEN #给一个球涂上绿色
radius = 50 #定义球的大小
while keep_going: #检查是不是要继续动漫
for event in pygame.event.get():
if event.type == pygame.QUIT: #从动漫基地寻找是不是要退出的信号
keep_going = False # 如果有退出的信号，告诉keep_going
pygame.draw.circle(screen, GREEN, (100,100), radius) # 画球
pygame.display.update()
pygame.quit() #关闭动漫
```
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### 复杂一点的静态笑脸动漫
```
#chapter8_2
import pygame
pygame.init()
screen = pygame.display.set_mode([800,600])
keep_going = True
pic = pygame.image.load("CrazySmile.bmp") #和上面那个例子的区别是，我们不再画图，而是直接导入一张笑脸
while keep_going:
for event in pygame.event.get():
if event.type == pygame.QUIT:
keep_going = False
screen.blit(pic, (100,100))
pygame.display.update()
pygame.quit() # Exit
```
*****
### 一个会动的笑脸动漫
```
#chapter8_3.py
import pygame # Setup
pygame.init()
screen = pygame.display.set_mode([600,600])
keep_going = True
pic = pygame.image.load("CrazySmile.bmp")
colorkey = pic.get_at((0,0))
pic.set_colorkey(colorkey)
picx = 0
picy = 0
BLACK = (0,0,0)
timer = pygame.time.Clock() # Timer for animation
while keep_going: # Game loop
for event in pygame.event.get():
if event.type == pygame.QUIT:
keep_going = False
picx += 1 # 移动笑脸
picy += 1 # 移动笑脸
screen.fill(BLACK) # 用黑板擦把笑脸移动的痕迹抹掉
screen.blit(pic, (picx,picy))
pygame.display.update()
timer.tick(60) # 每秒钟显示60幅画面
pygame.quit()
```
*****
### 一个加速了、可以回弹的笑脸动漫
```
#chapter8_4.py
import pygame # Setup
pygame.init()
screen = pygame.display.set_mode([600,600])
keep_going = True
pic = pygame.image.load("CrazySmile.bmp")
colorkey = pic.get_at((0,0))
pic.set_colorkey(colorkey)
picx = 0
picy = 0
BLACK = (0,0,0)
timer = pygame.time.Clock()
speed = 5 #给动漫加速
while keep_going: # Game loop
for event in pygame.event.get():
if event.type == pygame.QUIT:
keep_going = False
picx += speed
picy += speed
if picx <= 0 or picx + pic.get_width() >= 600:
speed = -speed # 回弹
screen.fill(BLACK)
screen.blit(pic, (picx,picy))
pygame.display.update()
timer.tick(60)
pygame.quit()
```
*****
### 一个更加活跃的笑脸动漫
```
#chapter8_5
import pygame # Setup
pygame.init()
screen = pygame.display.set_mode([800,600])
keep_going = True
pic = pygame.image.load("CrazySmile.bmp")
colorkey = pic.get_at((0,0))
pic.set_colorkey(colorkey)
picx = 0
picy = 0
BLACK = (0,0,0)
timer = pygame.time.Clock()
speedx = 5
speedy = 5
while keep_going: # Game loop
for event in pygame.event.get():
if event.type == pygame.QUIT:
keep_going = False
picx += speedx
picy += speedy
if picx <= 0 or picx + pic.get_width() >= 800:
speedx = -speedx
if picy <= 0 or picy + pic.get_height() >= 600:
speedy = -speedy
screen.fill(BLACK)
screen.blit(pic, (picx, picy))
pygame.display.update()
timer.tick(60)
pygame.quit() # Exit
```
*****
### 课程小结
`pygame` 是动漫开发工具，使用这个工具我们可以知道动漫是怎么实现的。
