1.pip安装pygame
- pygam插件安装
pip install 插件名字 # 安装
pip uninstall 插件名字 # 卸载
pip install 插件名字 -i 指定下载的镜像网址
pip show 插件名字 # 查看插件名字
pip install pygame -i https://pypi.tuna.tsinghua.edu.cn/simple
pip show pygame
2.pygame入门
详细看教程
3.代码
python
"""
# 0, 90, 180, 270
#下, 右 , 上 , 左
Snake类:
__init__(): # 指定默认方向向右
move(): # 让蛇根据当前方法进行移动(移动一格)
# 当前蛇头前进的方向复制一份
# 获取移动坐标,移动坐标更新
# 把新的头放在最前面通过insert()
# 把蛇尾移除掉
draw(): # 根据移动方向,旋转舌头图片角度
Game类:
# 合适位置移动,适当延时
"""
import random
import sys
import time
import pygame
# 全局变量
SCREEN_WIDTH = 640 # 屏幕宽度
SCREEN_HEIGHT = 480 # 屏幕高度
BLOCK_SIZE = 20 # 方格的宽、高长度
COLOR_GRAY = (150, 150, 150) # 灰色
COLOR_GREEN = (0, 150, 0) # 绿色
COLOR_WHITE = (255, 255, 255) # 白色
COLOR_RED = (255, 0, 0) # 红色
DIRECTION_MOVE = {
pygame.K_DOWN: (0, 1), # down
pygame.K_RIGHT: (1, 0), #right
pygame.K_UP: (0, -1), # up
pygame.K_LEFT: (-1, 0) # left
}
DIRECTION_HEAD_ANGLE = {
pygame.K_DOWN: 0,
pygame.K_RIGHT: 90,
pygame.K_UP: 180,
pygame.K_LEFT: 270
}
# 蛇类
class Snake:
def __init__(self):
# 设置初始方向为下
self.direction = pygame.K_DOWN
# 定义蛇身
self.snake_body = [
# x y 宽高
pygame.Rect(3 * BLOCK_SIZE, 3 * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE),
pygame.Rect(2 * BLOCK_SIZE, 3 * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE),
pygame.Rect(1 * BLOCK_SIZE, 3 * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE)
]
# 加载头图片
head_img = pygame.image.load("res/head-red.png")
# head_img = pygame.transform.rotate(head_img, 90)
# 设置 头img的图片 和大小
self.head_img = pygame.transform.scale(head_img, (BLOCK_SIZE, BLOCK_SIZE))
# 回之蛇
def draw(self, screen):
for node in self.snake_body[1:]:
# 绘制矩形 pygame.draw.rect(画布,颜色,node:位置和大小 边框)
pygame.draw.rect(screen, COLOR_WHITE, node, border_radius=3)
# 设置头 旋转
head_img = pygame.transform.rotate(self.head_img, DIRECTION_HEAD_ANGLE[self.direction])
# 设置头
snake_head = self.snake_body[0]
screen.blit(head_img, (snake_head.x, snake_head.y))
def move(self):
# 复制头
new_node = self.snake_body[0].copy()
# 确定移动方向
pos = DIRECTION_MOVE[self.direction]
# 更新坐标
new_node.x += (pos[0] * BLOCK_SIZE)
new_node.y += (pos[1] * BLOCK_SIZE)
# 变换头部节点
self.snake_body.insert(0, new_node)
self.snake_body.pop()
def check_collision(self):
# 检查蛇头是否碰到墙壁
# 判断蛇头是否 超出边界
if self.snake_body[0].x < 0 or self.snake_body[0].x >= SCREEN_WIDTH or \
self.snake_body[0].y < 0 or self.snake_body[0].y >= SCREEN_HEIGHT:
print("死亡")
print(f"分数为{len(self.snake_body)-3}")
return True
# 检查蛇头是否碰到自己的身体
for node in self.snake_body[1:]:
if self.snake_body[0].colliderect(node):
print("死亡")
print(f"分数为{len(self.snake_body)-3}")
return True
return False
def is_direction_enable(self, event_key):
# 按键方向是否合法
# 按键不是上下左右按键,返回False
if event_key not in DIRECTION_MOVE:
return False
# 如果方向为左右,同时,蛇能左右掉头,返回False
LR = (pygame.K_RIGHT, pygame.K_LEFT)
if event_key in LR and self.direction in LR:
return False
# 如果方向为上下,同时,蛇能上下掉头,返回False
UD = (pygame.K_DOWN, pygame.K_UP)
if event_key in UD and self.direction in UD:
return False
return True
# 上面条件都进不去,返回True
def update_direction(self, event_key):
self.direction = event_key
# 更新移动的方向
def grow(self):
node = self.snake_body[-1].copy()
self.snake_body.append(node)
class Food():
def __init__(self):
# 食物的随机x, y坐标,不要超出范围
x = random.randint(0, SCREEN_WIDTH // BLOCK_SIZE - 1)
y = random.randint(0, SCREEN_HEIGHT // BLOCK_SIZE - 1)
self.f_rect = pygame.Rect((x * BLOCK_SIZE, y * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))
def draw(self, screen):
pygame.draw.rect(screen, COLOR_RED, self.f_rect, border_radius=3)
class Game():
def __init__(self, title):
self.title = title
self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption(self.title)
self.img = pygame.image.load("res/snake_logo.png")
pygame.display.set_icon(self.img)
bg_image = pygame.image.load("res/bg.png")
self.bg_img = pygame.transform.scale(bg_image, (SCREEN_WIDTH, SCREEN_HEIGHT))
def start(self):
s = Snake()
f = Food()
while True:
events = pygame.event.get()
for event in events:
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
elif event.type == pygame.KEYDOWN:
# s.direction = event.key
if s.is_direction_enable(event.key):
s.update_direction(event.key)
self.screen.blit(self.bg_img, (0, 0))
# ---------------绘制网格
# 绘制所有横线 y = 640 // 20 = 24 [0, 20, 40, 60, ... 640)
for y in range(0, SCREEN_HEIGHT, BLOCK_SIZE):
pygame.draw.line(self.screen, COLOR_GRAY, (0, y), (SCREEN_WIDTH, y))
# 绘制所有竖线 x = 480 // 20 = 24 [0, 20, 40, 60, ... 480)
for x in range(0, SCREEN_WIDTH, BLOCK_SIZE):
pygame.draw.line(self.screen, COLOR_GRAY, (x, 0), (x, SCREEN_HEIGHT))
# 画蛇
s.draw(self.screen)
# 画食物
f.draw(self.screen)
pygame.display.update()
if s.check_collision():
pygame.quit()
sys.exit()
# 蛇移动
s.move()
# 判断是否吃到食物
if s.snake_body[0] == f.f_rect:
f = Food()
# 身体加长
s.grow()
# 游戏节奏
time.sleep(0.1)
game = Game("林安生贪吃蛇")
game.start()