一直想用pygame做一個小遊戲的，可是因爲拖延症的緣故一直沒有動，結果那天看到了一個12歲的國際友人小盆友用pygame做的一款塔防遊戲，突然感覺已經落後超級遠了，所以心血來潮做小遊戲了。高中陪伴我的遊戲就是手機裏的貪喫蛇，還記得我和老尹童鞋比拼分數的場景，所以就從貪喫蛇開始吧。
好吧，因爲大學老師教導我們，用面向對象的語言寫程序的時候，首先考慮建立類，於是乎，我就考慮建立了snake類和food類兩個，但是我不準備在我的程序裏添加圖片，所以這兩個類最終淪爲貪喫蛇和食物它們各自的位置變換的實現了。
class snake:
def __init__(self):
"""
init the snake
"""
self.poslist = [[10,10]]
def position(self):
"""
return the all of the snake's point
"""
return self.poslist
def gowhere(self,where):
"""
change the snake's point to control the snake's moving direction
"""
count = len(self.poslist)
pos = count-1
while pos > 0:
self.poslist[pos] = copy.deepcopy(self.poslist[pos-1])
pos -= 1
if where is 'U':
self.poslist[pos][1] -= 10
if self.poslist[pos][1] < 0:
self.poslist[pos][1] = 500
if where is 'D':
self.poslist[pos][1] += 10
if self.poslist[pos][1] > 500:
self.poslist[pos][1] = 0
if where is 'L':
self.poslist[pos][0] -= 10
if self.poslist[pos][0] < 0:
self.poslist[pos][0] = 500
if where is 'R':
self.poslist[pos][0] += 10
if self.poslist[pos][0] > 500:
self.poslist[pos][0] = 0
def eatfood(self,foodpoint):
"""
eat the food and add point to snake
"""
self.poslist.append(foodpoint)在gowhere函數中，之所以與500比較大小，是因爲我定義的窗口大小爲寬500，高500
class food:
def __init__(self):
"""
init the food's point
"""
self.x = random.randint(10,490)
self.y = random.randint(10,490)
def display(self):
"""
init the food's point and return the point
"""
self.x = random.randint(10,490)
self.y = random.randint(10,490)
return self.position()
def position(self):
"""
return the food's point
"""
return [self.x,self.y]food 的位置是使用隨即函數隨即出來的
def main():
moveup = False
movedown = False
moveleft = False
moveright = True
pygame.init()
clock = pygame.time.Clock()
width = 500
height = 500
screen = pygame.display.set_mode([width,height]) #1
restart = True
while restart:
sk = snake()
fd = food()
screentitle = pygame.display.set_caption("eat snake") #2
sk.gowhere('R')
running = True
while running:
# fill the background is white
screen.fill([255,255,255]) #3程序開始主要是做了一些初始化的工作，moveup/movedown/moveleft/moveright這四個變量使用來標註貪喫蛇的運動方向的，#1標註的那句是初始化顯示窗口的（因此所有pygame編寫的程序中，這句話有且只能調用一次），#2標註的那句是初始化標題欄顯示標題的，#3那句是用來填充整個背景爲白色
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit(0)
# judge the down key
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_UP:
moveup = True
movedown = False
moveleft = False
moveright = False
if event.key == pygame.K_DOWN:
moveup = False
movedown = True
moveleft = False
moveright = False
if event.key == pygame.K_LEFT:
moveup = False
movedown = False
moveleft = True
moveright = False
if event.key == pygame.K_RIGHT:
moveup = False
movedown = False
moveleft = False
moveright = True # where the snake goes
time_pass = clock.tick(40)
if moveup:
sk.gowhere('U')
if movedown:
sk.gowhere('D')
if moveleft:
sk.gowhere('L')
if moveright:
sk.gowhere('R') # draw the food
poslist = sk.position()
foodpoint = fd.position()
fdrect = pygame.draw.circle(screen,[255,0,0],foodpoint,15,0)
# draw the snafe
snaferect = []
for pos in poslist:
snaferect.append(pygame.draw.circle(screen,[255,0,0],pos,5,0)) # crash test if the snake eat food
if fdrect.collidepoint(pos):
foodpoint = fd.display()
sk.eatfood(foodpoint)
fdrect = pygame.draw.circle(screen,[255,0,0],foodpoint,15,0)
break
# crash test if the snake crash itsself
headrect = snaferect[0]
count = len(snaferect)
while count > 1:
if headrect.colliderect(snaferect[count-1]):
running = False
count -= 1
pygame.display.update()碰撞檢測貪喫蛇是否喫到了食物，以及是否撞到了自己，pygame.display.update()是更新整個界面的意思，前面的畫圖只是畫到了區域裏，但是沒有更新到窗口，需要此句將其更新到顯示窗口
# game over background
pygame.font.init()
screen.fill([100,0,0])
font = pygame.font.Font(None,48)
text = font.render("Game Over !!!",True,(255,0,0))
textRect = text.get_rect()
textRect.centerx = screen.get_rect().centerx
textRect.centery = screen.get_rect().centery + 24
screen.blit(text,textRect)
# keydown r restart,keydown n exit
while 1:
event = pygame.event.poll()
if event.type == pygame.QUIT:
pygame.quit()
exit(0)
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_r:
restart = True
del sk
del fd
break
if event.key == pygame.K_n:
restart = False
break
pygame.display.update()當輸了之後，界面上顯示game over字樣，此時按下“n”退出程序，按下“r"重新開始
自己寫的這個貪喫蛇與那位國際友人寫的程序比較一下，發現我因爲懶所以沒有添加圖片和音樂，純是畫的圖，所以不需要圖片的各種操作，我覺得那個圖片跟着鼠標轉動的效果挺有意思的，以後再做別的遊戲的時候再添加吧
源碼：http://download.csdn.net/detail/vhghhd/6035283，嘿嘿