与孩子一起学编程10章

这一次，来个有意思的小游戏

滑雪游戏，树是障碍物，拿到旗子有奖励，运行文件需要几个图片

上传在这儿，滑雪者

，旗子

，树

，还有滑雪者左方向的两个，第一个

，第二个

，右方向的两个，第一个

，第二个

，滑雪者碰撞树的图片

。图片的名称和代码里要一致。

代码如下

# encoding=utf-8
# 与孩子一起学编程10章
# Skier 代码清单 10-1
# 2013年8月31日10:08:25

import pygame, sys, random

skier_image = ["skier_down.png", "skier_right1.png", "skier_right2.png",
"skier_left2.png", "skier_left1.png"]

# 创建滑雪者
class SkierClass(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load("skier_down.png")
self.rect = self.image.get_rect()
self.rect.center = [320, 100]
self.angle = 0

# 滑雪者转向
def turn(self, direction):
self.angle = self.angle + direction
if self.angle < -2:  self.angle = -2
if self.angle >  2:  self.angle =  2
center = self.rect.center
self.image = pygame.image.load(skier_image[self.angle])
self.rect = self.image.get_rect()
self.rect.center = center
speed = [self.angle, 6 - abs(self.angle) * 2]
return speed

# 滑雪者左右移动
def move(self, speed):
self.rect.centerx = self.rect.centerx + speed[0]
if self.rect.centerx < 20:  self.rect.centerx = 20
if self.rect.centerx > 620: self.rect.centerx = 620

class ObstacleClass(pygame.sprite.Sprite):
# 创建树和小旗
def __init__(self, image_file, location, type):
pygame.sprite.Sprite.__init__(self)
self.image_file = image_file
self.image = pygame.image.load(image_file)
self.location = location
self.rect = self.image.get_rect()
self.rect.center = location
self.type = type
self.passed = False

#让场景向上滚
def scroll(self, t_ptr):
self.rect.centery = self.location[1] - t_ptr

def create_map(start, end):
# 创建一个窗口，包含随机的树和小旗
obstacles = pygame.sprite.Group()
locations = []
gates = pygame.sprite.Group()
for i in range(10):
row = random.randint(start, end)
col = random.randint(0, 9)
location = [col * 64 + 20, row * 64 + 20]
if not (location in locations):
locations.append(location)
type = random.choice(["tree", "flag"])
if type == "tree": img = "skier_tree.png"
elif type == "flag":  img = "skier_flag.png"
obstacle = ObstacleClass(img, location, type)
obstacles.add(obstacle)
return obstacles

def animate():
# 有移动时重绘屏幕
screen.fill([255, 255, 255])
pygame.display.update(obstacles.draw(screen))
screen.blit(skier.image, skier.rect)
screen.blit(score_text, [10, 10])
pygame.display.flip()

def updateObstacleGroup(map0, map1):
# 切换到场景的下一屏
obstacles = pygame.sprite.Group()
for ob in map0:  obstacles.add(ob)
for ob in map1:  obstacles.add(ob)
return obstacles

# 做好准备
pygame.init()
screen = pygame.display.set_mode([640,640])
clock = pygame.time.Clock()
skier = SkierClass()
speed = [0, 6]
map_position = 0
points = 0
map0 = create_map(20, 29)
map1 = create_map(10, 19)
activeMap = 0
obstacles = updateObstacleGroup(map0, map1)
font = pygame.font.Font(None, 50)

# 开始主循环
while True:
clock.tick(30)  # 每秒更新30次图形
# 检查按键或窗口是否关闭
for event in pygame.event.get():
if event.type == pygame.QUIT: sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
speed = skier.turn(-1)
elif event.key == pygame.K_RIGHT:
speed = skier.turn(1)
skier.move(speed)  # 移动滑雪者
map_position += speed[1]  # 滚动场景

# 从场景的一个窗口切换到下一个窗口
if map_position >=640 and activeMap == 0:
activeMap = 1
map0 = create_map(20, 29)
obstacles = updateObstacleGroup(map0, map1)
if map_position >=1280 and activeMap == 1:
activeMap = 0
for ob in map0:
ob.location[1] = ob.location[1] - 1280
map_position = map_position -1280
map1 = create_map(10, 19)
obstacles = updateObstacleGroup(map0, map1)

for obstacle in obstacles:
obstacle.scroll(map_position)

# 检查是否碰到树或得到小旗
hit = pygame.sprite.spritecollide(skier, obstacles, False)
if hit:
if hit[0].type == "tree" and not hit[0].passed:
points = points - 100
skier.image = pygame.image.load("skier_crash.png")
animate()
pygame.time.delay(1000)
skier.image = pygame.image.load("skier_down.png")
skier.angle = 0
speed = [0, 6]
hit[0].passed = True
elif hit[0].type == "flag" and not hit[0].passed:
points += 10
obstacles.remove(hit[0])

# 显示得分
score_text = font.render("Score: " +str(points), 1, (0, 0, 0))
animate()

你也可以试试看，挺有意思的，哈哈，总于有个比较完整的演示代码了，后面的也要有点难度了，不过不要紧，慢慢学，一点一点的试着写一些代码，就会有些收获的。一起来吧，python的世界。