python3小游戏(1):吃苹果小游戏
注意,申请时说明加入原因,另外这个群都是一群和我一样的小白,大家谁也不说谁,共同进步(ps:写这个文章时,只有我一人)
1.本文是基于pygame库开发的小游戏,主要功能有:
(1).可以通过键盘的上下左右四个键来控制主人公小刘的位置(同是移动方向不同,小刘的姿势也不同)
(2).游戏开始界面会随机飘着大约40个苹果,如果小刘碰到苹果,会把它吃掉,同是增加界面下方显示的血量
(3).吃完苹果,game over
2.从游戏开发及完成的全过程看,分为个步骤:
(1).开发工具:PyCharm;python版本python3.6;window版本win7 64位
(2).需要安装pygame库,
(3).如果要打包成exe可执行程序,则需要安装pyinstaller库,
1.造个小小小库(哈~可见有多小):
(1).之所以造库是因为我们这个小游戏中有两个活物:主人公小刘和苹果;这个库有两功能:
a.主人公小刘,我们有一个矩阵图片如下,拿出“找泥妹”的眼里看一下有啥区别。(一天后。。。)。 昨天我们让你看下面图片找出区别,我公布答案吧,每一行代表一个方向,同一行内,每一列代表小刘走一步需 要怎么迈步。我们需要一个方法在小刘拐弯时知道他拐哪边,在下图聚焦到一个姿势显示到界面。(下面图片想用的话,直接右键下载即可)
b.苹果:我们因为需要在游戏开始在界面漂浮40个苹果,并在小刘吃了一个后把他去掉,这样不可能一个一个创建,这 里也需要一个方法
(2).代码实现(我把这文件命名为myLibrary.py)
# -*- coding: utf-8 -*-
# @Time : 2018/5/17 0017 上午 8:32
# @Author : silents
# @FileName: myLibrary.py
# @Software: PyCharm
# @Blog :Http://blog.csdn.net/chq1005613740
import pygame
from pygame.locals import *
class Point():
def __init__(self, x,y):
self.X =x
self.Y =y
class MySprite(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.master_image = None
self.frame = 0
self.old_frame = -1
self.frame_width = 1
self.frame_height = 1
self.first_frame = 0
self.last_frame = 0
self.columns = 1
self.last_time = 0
self.direction = 0
self.X = 0
self.Y = 0
#新增了velocity属性,他是一个point
self.velocity = Point(0.0,0.0)
def load(self, filename, position, bg_size):
self.image = pygame.image.load(filename).convert_alpha()
self.rect = self.image.get_rect()
#苹果的位置
self.rect.left, self.rect.top = position
#self.speed = speed
self.width, self.height = bg_size[0], bg_size[1]
def load_column(self, filename, position, bg_size, columns):
self.master_image = pygame.image.load(filename).convert_alpha()
self.frame_width = bg_size[0]
self.frame_height = bg_size[1]
self.position = position
self.rect = self.master_image.get_rect()
self.ori_frame_width = self.rect.width
self.ori_frame_height = self.rect.height
self.rect.left, self.rect.top = position
self.rect.width,self.rect.height = bg_size[0],bg_size[1]
self.columns = columns
self.last_frame = (self.ori_frame_width // bg_size[0]) * (self.ori_frame_height // bg_size[1]) - 1
def update(self, current_time, rate=60):
if current_time > self.last_time + rate:
self.frame += 1
if self.frame > self.last_frame:
self.frame = self.first_frame
self.last_time = current_time
if self.frame != self.old_frame:
frame_x = (self.frame % self.columns) * self.frame_width
frame_y = (self.frame // self.columns) * self.frame_height
# rect = ( self.X, self.Y, self.frame_width, self.frame_height )
rect = ( frame_x, frame_y, self.frame_width, self.frame_height )
self.rect.left, self.rect.top = self.X, self.Y
self.image = self.master_image.subsurface(rect)
self.old_frame = self.frame
可以看出代码很少,主要分三部分(请自行忽略初始化部分):
a. 方法load:主要是为创建苹果而准备,
加载图片 --> 获取图片大小 --> 获取图片位置
b. 方法load_column:主要为小刘而准备,
加载图片 --> 获取图片位置 --> 获取图片大小 --> 把图片切割成64块(每块一个姿势)
c. 方法update:也为小刘而准备,
对load_colunm中切割完的64块piece进行切换,同时移动位置
2.写一个小小调用(可见比上面少了一个“小”,有点麻烦,心脏不好,高血压勿进):
(1). 开始之前需要先了解几个概念:
a. 精灵:你可以简单的理解为一个需要显示的图片
b. 精灵组:你可以简单的理解为一组需要显示的图片
c.碰撞检测:在程序中,我们理解为两个精灵是否碰撞,精灵和精灵组是否碰撞,精灵组和精灵组是否碰撞
(2). 大致流程:
a.创建玩家精灵组:里面是上面切割完的64块小刘
b. 创建苹果精灵组:里面是在界面位置随机的40个苹果
c. 设置定时器:定时更新界面
d.检测键盘按键:作为小刘移动的依据
e.移动小刘:让他去吃苹果
f.检测碰撞:此游戏中属于精灵和精灵组的碰撞(两次检测,逐一分析代码),把碰撞的苹果吃掉
g. 更新血量:小刘吃一个苹果就增加一点血
(3). 代码搬运(此文件我把它叫walk.py)
# -*- coding: utf-8 -*-
# @Time : 2018/5/17 0017 上午 10:30
# @Author : silents
# @FileName : fifth_walk.py
# @Software : PyCharm
# @Blog :http://blog.csdn.net/chq1005613740
# @Description: Buttons to control the movement of people,
# people eat apples,
# people eat apples will increase blood,
# eat blood over
import itertools, sys, time, random, math, pygame
from pygame.locals import *
from game_Go.myLibrary import *
def calc_velocity(direction, vel=1.0):
velocity = Point(0, 0)
if direction == 0: # 上
velocity.Y = -vel
elif direction == 2: # 右
velocity.X = vel
elif direction == 4: # 下
velocity.Y = vel
elif direction == 6: # 左
velocity.X = -vel
return velocity
pygame.init()
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("吃苹果")
font = pygame.font.SysFont('arial',36)
timer = pygame.time.Clock()
# 创建精灵组
player_group = pygame.sprite.Group()
food_group = pygame.sprite.Group()
# 初始化玩家精灵组
#def load_column(self, filename, position, bg_size, columns):
position = 800/2-10,600/2+10
bg_size = 62.5, 62.5
player = MySprite()
player.load_column("res//walk.png",position, bg_size, 8)
# player.position = 80, 80
player.direction = 4
player_group.add(player)
# 初始化food精灵组
for n in range(1, 40):
food = MySprite();
position = random.randint(0, 750), random.randint(0, 550)
bg_size = 50, 48
food.load("res//apple.png", position, bg_size)
food_group.add(food)
game_over = False
player_moving = False
player_health = 0
while True:
timer.tick(30)
ticks = pygame.time.get_ticks()
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
keys = pygame.key.get_pressed()
if keys[K_ESCAPE]:
sys.exit()
elif keys[K_UP] or keys[K_w]:
player.direction = 0
player_moving = True
elif keys[K_RIGHT] or keys[K_d]:
player.direction = 2
player_moving = True
elif keys[K_DOWN] or keys[K_s]:
player.direction = 4
player_moving = True
elif keys[K_LEFT] or keys[K_a]:
player.direction = 6
player_moving = True
else:
player_moving = False
if not game_over:
# 根据角色的不同方向,使用不同的动画帧
player.first_frame = player.direction * player.columns
player.last_frame = player.first_frame + player.columns - 1
if player.frame != player.first_frame:
player.frame = player.first_frame
if not player_moving:
# 当停止按键(即人物停止移动的时候),停止更新动画帧
player.frame = player.first_frame = player.last_frame
else:
player.velocity = calc_velocity(player.direction, 2)
player.velocity.X *= 2
player.velocity.Y *= 2
# 更新玩家精灵组
player_group.update(ticks, 50)
# 移动玩家
if player_moving:
player.X += player.velocity.X
player.Y += player.velocity.Y
if player.X < 0:
player.X = 0
elif player.X > 700:
player.X = 700
if player.Y <0:
player.Y = 0
elif player.Y > 500:
player.Y = 500
myfont = pygame.font.SysFont('arial',36)
white = 255, 255, 255
textImage = myfont.render("Hello Pygame:%i-%i" %(player.X,player.Y), True, white)
# 检测玩家是否与食物冲突,是否吃到果实
attacker = None
attacker = pygame.sprite.spritecollide(player, food_group, False, pygame.sprite.collide_circle)
if len(attacker) !=0:
for atta in attacker:
# if pygame.sprite.collide_circle(player, atta):
if pygame.sprite.collide_circle_ratio(0.65)(player, atta):
player_health += 2;
food_group.remove(atta);
if player_health > 100: player_health = 100
# 更新食物精灵组
# food_group.update(ticks, 50)
if len(food_group) == 0:
game_over = True
# 清屏
screen.fill((50, 50, 100))
# 绘制精灵
food_group.draw(screen)
player_group.draw(screen)
# 绘制玩家血量条
pygame.draw.rect(screen, (50, 150, 50, 180), Rect(300, 570, player_health * 2, 25))
pygame.draw.rect(screen, (100, 200, 100, 180), Rect(300, 570, 200, 25), 2)
if game_over:
textImage = font.render("G A M E O V E R", True, (0,0,0))
screen.blit(textImage, (100,100))
# print_text(font, 300, 100, "G A M E O V E R")
screen.blit(textImage, (300,500))
pygame.display.update()
(因为本人菜鸟,大家过程中有问题就留言,我会的肯定马上回复,不像某些大神那么忙)
现在我们可以把py打包成exe了,嘤嘤嘤。。。
1.安装pyinstaller库
cmd到Python3路径下,执行如下命令:
pip3 install pyinstaller
2. 打包
pyinstaller -F -w walk.py
3. 嘚瑟
请自行脑补
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