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011 snake game
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‎011_snake_game.md

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# 10 gobang
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## Requirements
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1. Run the code in console using command line.
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2. It'll open a Python window to play the snake game.
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## What will we practice in this project?
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- turtle diagram
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- key event handle
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- if condition
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- timer
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- object clone
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- list
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## A reference code
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```python
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from turtle import *
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from random import randint
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gz = 22
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bc = gz * 8
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screen = Screen()
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screen.bgcolor("darkblue")
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food = Turtle()
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food.color("red")
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food.shape("square")
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food.up()
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food.speed(0)
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food.goto(randint(-bc+gz, bc-gz)//gz*gz, randint(-bc+gz, bc-gz)//gz*gz)
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liner = Turtle()
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liner.speed(0)
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liner.up()
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liner.goto(-bc, bc)
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liner.color("white")
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liner.pensize(5)
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liner.down()
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for i in range(4):
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liner.fd(bc*2)
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liner.rt(90)
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liner.ht()
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score = 0
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judge = Turtle()
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judge.speed(0)
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judge.up()
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judge.goto(0, bc+20)
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judge.color("white")
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judge.write("得分:{}".format(score), align="center", font=("Kai", 20, "bold"))
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judge.ht()
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head = Turtle()
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head.speed(0)
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head.up()
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head.color("cyan")
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head.shape("square")
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snake = []
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snake.append(head)
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for i in range(2):
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body = head.clone()
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body.color("white")
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body.goto(head.xcor()+(i+1)*gz, head.ycor())
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snake.append(body)
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d = [-1, 0]
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def move():
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last = snake.pop()
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first = snake[0]
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first.color("white")
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last.goto(first.xcor() + d[0] * gz, first.ycor() + d[1] * gz)
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last.color("cyan")
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snake.insert(0, last)
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if snake[0].xcor() == food.xcor() and snake[0].ycor() == food.ycor():
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food.ht()
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food.goto(randint(-bc+gz, bc-gz)//gz*gz, randint(-bc+gz, bc-gz)//gz*gz)
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food.st()
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body = snake[-1].clone()
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snake.append(body)
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global score
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score += 1
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judge.clear()
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judge.write("得分:{}".format(score), align="center", font=("Kai", 20, "bold"))
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if (snake[0].xcor() > -bc and snake[0].xcor() < bc) and \
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(snake[0].ycor() > -bc and snake[0].ycor() < bc):
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screen.ontimer(move, 500)
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def up():
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global d
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if d[1] != -1:
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d = [0, 1]
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def down():
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global d
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if d[1] != 1:
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d = [0, -1]
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def left():
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global d
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if d[0] != 1:
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d = [-1, 0]
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def right():
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global d
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if d[0] != -1:
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d = [1, 0]
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screen.onkey(up, "Up")
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screen.onkey(down, "Down")
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screen.onkey(left, "Left")
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screen.onkey(right, "Right")
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screen.listen()
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move()
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```
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## Run the demo
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Please save the Python as snake.py and run it in console：
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```
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python snake.py
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```
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![Chanllenge 10](images/011_snake.png)
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----
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# 贪吃蛇小游戏
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## 项目需求
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- 直接在控制台使用命令行运行
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- 运行之后出现贪吃蛇小游戏
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## 项目练习
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- turtle
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- 键盘事件响应
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- 条件语句
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- 定时器
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- 对象克隆
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- 列表
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## 项目参考代码
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```python
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from turtle import *
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from random import randint
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gz = 22
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bc = gz * 8
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screen = Screen()
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screen.bgcolor("darkblue")
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food = Turtle()
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food.color("red")
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food.shape("square")
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food.up()
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food.speed(0)
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food.goto(randint(-bc+gz, bc-gz)//gz*gz, randint(-bc+gz, bc-gz)//gz*gz)
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liner = Turtle()
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liner.speed(0)
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liner.up()
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liner.goto(-bc, bc)
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liner.color("white")
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liner.pensize(5)
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liner.down()
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for i in range(4):
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liner.fd(bc*2)
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liner.rt(90)
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liner.ht()
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score = 0
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judge = Turtle()
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judge.speed(0)
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judge.up()
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judge.goto(0, bc+20)
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judge.color("white")
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judge.write("得分:{}".format(score), align="center", font=("Kai", 20, "bold"))
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judge.ht()
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head = Turtle()
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head.speed(0)
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head.up()
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head.color("cyan")
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head.shape("square")
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snake = []
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snake.append(head)
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for i in range(2):
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body = head.clone()
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body.color("white")
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body.goto(head.xcor()+(i+1)*gz, head.ycor())
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snake.append(body)
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d = [-1, 0]
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def move():
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last = snake.pop()
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first = snake[0]
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first.color("white")
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last.goto(first.xcor() + d[0] * gz, first.ycor() + d[1] * gz)
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last.color("cyan")
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snake.insert(0, last)
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if snake[0].xcor() == food.xcor() and snake[0].ycor() == food.ycor():
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food.ht()
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food.goto(randint(-bc+gz, bc-gz)//gz*gz, randint(-bc+gz, bc-gz)//gz*gz)
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food.st()
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body = snake[-1].clone()
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snake.append(body)
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global score
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score += 1
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judge.clear()
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judge.write("得分:{}".format(score), align="center", font=("Kai", 20, "bold"))
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if (snake[0].xcor() > -bc and snake[0].xcor() < bc) and \
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(snake[0].ycor() > -bc and snake[0].ycor() < bc):
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screen.ontimer(move, 500)
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def up():
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global d
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if d[1] != -1:
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d = [0, 1]
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def down():
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global d
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if d[1] != 1:
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d = [0, -1]
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def left():
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global d
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if d[0] != 1:
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d = [-1, 0]
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def right():
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global d
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if d[0] != -1:
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d = [1, 0]
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screen.onkey(up, "Up")
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screen.onkey(down, "Down")
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screen.onkey(left, "Left")
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screen.onkey(right, "Right")
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screen.listen()
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move()
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```
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## 测试运行
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将代码保存为snake.py，然后在控制台运行：
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```
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python snake.py
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```
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![挑战10](images/011_snake.png)

‎README.md

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## 010 Gobang game
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https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/010_gobang.md
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## 011 Snake game
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https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/011_snake_game.md

‎code/10/gobang.py

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from turtle import *
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win = False
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speed(0)
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bgcolor("lightgreen")
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yanse="black"
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gz=40
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judge = Turtle()
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judge.up()
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judge.goto(-460, 330)
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judge.write("Next", font=("Arial", 40, "bold"))
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judge.color(yanse)
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judge.goto(-420, 300)
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judge.dot(30)
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for i in range(19):
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up()
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goto(-gz*9, gz*(9-i))
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down()
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fd(gz*18)
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bk(gz*18)
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rt(90)
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for i in range(19):
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up()
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goto(-gz*(9-i), gz*9)
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down()
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fd(gz*18)
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bk(gz*18)
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pensize(5)
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for i in range(4):
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fd(gz*18)
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rt(90)
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# m = [[0] * 19 for i in range(19)]
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m =[
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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]
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def check(i, j):
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global win
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g = [0] * 8
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fw = ((0, 1), (1, 1), (1, 0), (1, -1), (0, -1), (-1, -1), (-1, 0), (-1, 1))
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for index in range(8):
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d = fw[index]
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next_i = i + d[0]
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next_j = j + d[1]
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while next_i in range(19) and next_j in range(19) and m[next_i][next_j] == m[i][j]:
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g[index] = g[index] + 1
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next_i = next_i + d[0]
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next_j = next_j + d[1]
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for index in range(4):
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if g[index] + g[index + 4] + 1 >= 5:
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win = True
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goto(0, 0)
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if yanse == "black":
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write('Black Win', font=('Arial', 100, ''), align='center')
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else:
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write('White Win', font=('Arial', 100, ''), align='center')
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break
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def play(x, y):
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if not win:
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global yanse
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global gz
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color(yanse)
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up()
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x = round(x/gz)*gz
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y = round(y/gz)*gz
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i = int(9 - y / gz)
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j = int(x / gz + 9)
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if i >= 0 and i <= 18 and j >=0 and j<=18:
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if m[i][j] == 0:
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goto(x, y)
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dot(30)
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if yanse == "black":
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m[i][j] = 1
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check(i, j)
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yanse="white"
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else:
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m[i][j] = 2
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check(i, j)
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yanse="black"
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judge.color(yanse)
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judge.dot(30)
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onscreenclick(play, 1)
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done()

‎code/11/snake.py

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‎images/011_snake.png

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