pygame小游戏——贪吃蛇
文章目录
-
- 前言
- 基本设置
- 绘制屏幕
- 蛇类
- 食物类
- 初始状态
- 生成食物
- 响应键鼠
- 更新屏幕
- 移动进食
- 游戏入口
- snake.py
- food.py
- function.py
- main.py
- 凉梦空间
前言
贪吃蛇（也叫做贪食蛇）游戏是一款休闲益智类游戏，既简单又耐玩，唯一的目标就是做这条gai上最长（pang）的蛇（zhu）！
玩贪吃蛇最考验的就是走位（简称蛇皮走位），各种漂移过人，唉，就是玩儿！
基本设置
# 基本设置
lattice_wh = 20
snake_color = (84, 255, 159)
snake_head_color = (123, 104, 238)
food_color = (255, 64, 64)
绘制屏幕
# 绘制屏幕
pygame.init()
screen = pygame.display.set_mode((25*lattice_wh, 25*lattice_wh))
pygame.display.set_caption("贪吃蛇")
# 帧率，每秒刷新屏幕次数
FPS = 10
# 帧率变化系数
level = 1.5
# 时间对象
FPSCLOCK = pygame.time.Clock()
# 游戏结束标志
game_over = 0
# 前进方向
direction = 0
# 进食数量
num = 0
蛇类
# 蛇
class Snake():
def __init__(self, snake_color, snake_head_color, x, y, lattice_wh):
self.color = snake_color
self.head_color = snake_head_color
# 左上顶点坐标
self.pos = (x, y)
self.lattice_wh = lattice_wh
# 绘制蛇体
self.rect = pygame.rect.Rect(x, y, self.lattice_wh, self.lattice_wh)
# 左上顶点坐标变化
self.pos_change = {
# 上移
1:(0, -self.lattice_wh),
# 下移
2:(0, self.lattice_wh),
# 左移
3:(-self.lattice_wh, 0),
# 右移
4:(self.lattice_wh, 0)
}
def move(self, direction):
self.rect.x += self.pos_change[direction][0]
self.rect.y += self.pos_change[direction][1]
def forecast(self, direction):
return (self.rect.x+self.pos_change[direction][0], self.rect.y+self.pos_change[direction][1])
食物类
# 食物
class Food():
def __init__(self, food_color, screen, lattice_wh, x, y):
self.screen = screen
self.color = food_color
self.lattice_wh = lattice_wh
# 半径
self.radius = lattice_wh/2
self.x, self.y = x, y
def draw(self):
# 圆心
pos = (self.x+self.lattice_wh/2, self.y+self.lattice_wh/2)
# 绘制食物
pygame.draw.circle(self.screen, self.color, pos, self.radius, int(self.radius))
初始状态
# 贪吃蛇
snakes = list()
snakes.append(Snake(snake_color, snake_head_color, lattice_wh, 24*lattice_wh, lattice_wh))
snakes.append(Snake(snake_color, snake_head_color, 0, 24*lattice_wh, lattice_wh))
# 食物
food = create_food(food_color, screen, lattice_wh, snakes)
# 游戏状态
game_stats = [game_over, direction, num, food]
生成食物
# 生成食物
def create_food(food_color, screen, lattice_wh, snakes):
# 食物是否生成成功
create_success = 0
# 食物位置坐标
food_x, food_y = 0, 0
while not create_success:
food_x, food_y = randint(0, 24), randint(0, 24)
food_x *= lattice_wh
food_y *= lattice_wh
# 检查食物位置是否与贪吃蛇位置重合
for snake in snakes:
if (food_x, food_y) != (snake.rect.x, snake.rect.y):
create_success = 1
break
# 在指定位置生成食物
food = Food(food_color, screen, lattice_wh, food_x, food_y)
return food
响应键鼠
# 响应键鼠
def check_events(game_stats):
for event in pygame.event.get():
# 退出游戏
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
# 控制移动方向，注意不能直接反向移动
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP and game_stats[1] != 2:
game_stats[1] = 1
elif event.key == pygame.K_DOWN and game_stats[1] != 1:
game_stats[1] = 2
elif event.key == pygame.K_LEFT and game_stats[1] != 4:
game_stats[1] = 3
elif event.key == pygame.K_RIGHT and game_stats[1] != 3:
game_stats[1] = 4
else:
game_stats[1] = game_stats[1]
更新屏幕
# 更新屏幕
def update(screen, lattice_wh, snakes, game_stats):
screen.fill((255, 255, 255))
# 绘制蛇头
pygame.draw.rect(screen, snakes[0].head_color, snakes[0].rect)
# 绘制蛇身
for i in range(1, len(snakes)):
pygame.draw.rect(screen, snakes[i].color, snakes[i].rect)
# 绘制横线
for i in range(25):
pygame.draw.line(screen, (105, 105, 105), (0, lattice_wh*i), (500, lattice_wh*i))
# 绘制竖线
for i in range(25):
pygame.draw.line(screen, (105, 105, 105), (lattice_wh*i, 0), (lattice_wh*i, 500))
# 绘制食物
game_stats[3].draw()
# 更新屏幕
pygame.display.flip()
移动进食
# 移动进食
def going(screen, game_stats, snakes, snake_head_color, snake_color, food_color, lattice_wh):
if not game_stats[1]:
return
# 蛇头下一前进位置
(x, y) = snakes[0].forecast(game_stats[1])
# 检查是否触碰边界
if x == -lattice_wh or x == 25*lattice_wh or y == -lattice_wh or y == 25*lattice_wh:
game_stats[0] = 1
return
# 检查是否触碰食物
if (x, y) == (game_stats[3].x, game_stats[3].y):
# 更新蛇头
new_head = Snake(snake_color, snake_head_color, x, y, lattice_wh)
snakes.insert(0, new_head)
# 更新分数
game_stats[2] += 1
# 重新生成食物
game_stats[3] = create_food(food_color, screen, lattice_wh, snakes)
return
# 检查是否触碰蛇身
for snake in snakes:
if (x, y) == (snake.rect.x, snake.rect.y):
game_stats[0] = 1
return
# 更新所有蛇身位置
for i in range(len(snakes)-1, 0, -1):
snakes[i].rect.x = snakes[i-1].rect.x
snakes[i].rect.y = snakes[i-1].rect.y
# 更新蛇头位置
snakes[0].move(game_stats[1])
游戏入口
# 游戏入口
while not game_stats[0]:
update(screen, lattice_wh, snakes, game_stats)
check_events(game_stats)
going(screen, game_stats, snakes, snake_head_color, snake_color, food_color, lattice_wh)
FPSCLOCK.tick(FPS * level ** num if FPS * level ** num < 60 else 60)
snake.py
import pygame
# 蛇
class Snake():
def __init__(self, snake_color, snake_head_color, x, y, lattice_wh):
self.color = snake_color
self.head_color = snake_head_color
# 左上顶点坐标
self.pos = (x, y)
self.lattice_wh = lattice_wh
# 绘制蛇体
self.rect = pygame.rect.Rect(x, y, self.lattice_wh, self.lattice_wh)
# 左上顶点坐标变化
self.pos_change = {
# 上移
1:(0, -self.lattice_wh),
# 下移
2:(0, self.lattice_wh),
# 左移
3:(-self.lattice_wh, 0),
# 右移
4:(self.lattice_wh, 0)
}
# 移动
def move(self, direction):
self.rect.x += self.pos_change[direction][0]
self.rect.y += self.pos_change[direction][1]
# 下一前进位置
def forecast(self, direction):
return (self.rect.x+self.pos_change[direction][0], self.rect.y+self.pos_change[direction][1])
food.py
import pygame
# 食物
class Food():
def __init__(self, food_color, screen, lattice_wh, x, y):
self.screen = screen
self.color = food_color
self.lattice_wh = lattice_wh
# 半径
self.radius = lattice_wh/2
self.x, self.y = x, y
def draw(self):
# 圆心
pos = (self.x+self.lattice_wh/2, self.y+self.lattice_wh/2)
# 绘制食物
pygame.draw.circle(self.screen, self.color, pos, self.radius, int(self.radius))
function.py
import pygame
import sys
from random import randint
from food import Food
from snake import Snake
# 生成食物
def create_food(food_color, screen, lattice_wh, snakes):
# 食物是否生成成功
create_success = 0
# 食物位置坐标
food_x, food_y = 0, 0
while not create_success:
food_x, food_y = randint(0, 24), randint(0, 24)
food_x *= lattice_wh
food_y *= lattice_wh
# 检查食物位置是否与贪吃蛇位置重合
for snake in snakes:
if (food_x, food_y) != (snake.rect.x, snake.rect.y):
create_success = 1
break
# 在指定位置生成食物
food = Food(food_color, screen, lattice_wh, food_x, food_y)
return food
# 响应事件
def check_events(game_stats):
for event in pygame.event.get():
# 退出游戏
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
# 控制移动方向，注意不能直接反向移动
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP and game_stats[1] != 2:
game_stats[1] = 1
elif event.key == pygame.K_DOWN and game_stats[1] != 1:
game_stats[1] = 2
elif event.key == pygame.K_LEFT and game_stats[1] != 4:
game_stats[1] = 3
elif event.key == pygame.K_RIGHT and game_stats[1] != 3:
game_stats[1] = 4
else:
game_stats[1] = game_stats[1]
# 更新屏幕
def update(screen, lattice_wh, snakes, game_stats):
screen.fill((255, 255, 255))
# 绘制蛇头
pygame.draw.rect(screen, snakes[0].head_color, snakes[0].rect)
# 绘制蛇身
for i in range(1, len(snakes)):
pygame.draw.rect(screen, snakes[i].color, snakes[i].rect)
# 绘制横线
for i in range(25):
pygame.draw.line(screen, (105, 105, 105), (0, lattice_wh*i), (500, lattice_wh*i))
# 绘制竖线
for i in range(25):
pygame.draw.line(screen, (105, 105, 105), (lattice_wh*i, 0), (lattice_wh*i, 500))
# 绘制食物
game_stats[3].draw()
# 更新屏幕
pygame.display.flip()
# 移动进食
def going(screen, game_stats, snakes, snake_head_color, snake_color, food_color, lattice_wh):
if not game_stats[1]:
return
# 蛇头下一前进位置
(x, y) = snakes[0].forecast(game_stats[1])
# 检查是否触碰边界
if x == -lattice_wh or x == 25*lattice_wh or y == -lattice_wh or y == 25*lattice_wh:
game_stats[0] = 1
return
# 检查是否触碰食物
if (x, y) == (game_stats[3].x, game_stats[3].y):
# 更新蛇头
new_head = Snake(snake_color, snake_head_color, x, y, lattice_wh)
snakes.insert(0, new_head)
# 更新分数
game_stats[2] += 1
# 重新生成食物
game_stats[3] = create_food(food_color, screen, lattice_wh, snakes)
return
# 检查是否触碰蛇身
for snake in snakes:
if (x, y) == (snake.rect.x, snake.rect.y):
game_stats[0] = 1
return
# 更新所有蛇身位置
for i in range(len(snakes)-1, 0, -1):
snakes[i].rect.x = snakes[i-1].rect.x
snakes[i].rect.y = snakes[i-1].rect.y
# 更新蛇头位置
snakes[0].move(game_stats[1])
main.py
import pygame
from function import *
from snake import Snake
# 基本设置
lattice_wh = 20
snake_color = (84, 255, 159)
snake_head_color = (123, 104, 238)
food_color = (255, 64, 64)
# 绘制屏幕
pygame.init()
screen = pygame.display.set_mode((25*lattice_wh, 25*lattice_wh))
pygame.display.set_caption("贪吃蛇")
# 帧率，每秒刷新屏幕次数
FPS = 10
# 帧率变化系数
level = 1.5
# 时间对象
FPSCLOCK = pygame.time.Clock()
# 游戏结束标志
game_over = 0
# 前进方向
direction = 0
# 进食数量
num = 0
# 贪吃蛇
snakes = list()
snakes.append(Snake(snake_color, snake_head_color, lattice_wh, 24*lattice_wh, lattice_wh))
snakes.append(Snake(snake_color, snake_head_color, 0, 24*lattice_wh, lattice_wh))
# 食物
food = create_food(food_color, screen, lattice_wh, snakes)
# 游戏状态
game_stats = [game_over, direction, num, food]
# 游戏入口
while not game_stats[0]:
update(screen, lattice_wh, snakes, game_stats)
check_events(game_stats)
going(screen, game_stats, snakes, snake_head_color, snake_color, food_color, lattice_wh)
FPSCLOCK.tick(FPS * level ** num if FPS * level ** num < 60 else 60)
敲黑板！！！在控制蛇的移动方向时，易忽略蛇不能直接反向移动这一问题；另外，在生成食物时，要检查食物的位置与蛇的位置是否重合，如果两者位置重合，此时需要生成新的食物。
python小游戏——井字棋：https://blog.csdn.net/KissMoon_/article/details/117437893
凉梦空间
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