save project

snake.py

@@ -8,24 +8,51 @@ background = pygame.image.load('bg.png')    #背景
 food = pygame.image.load('apple.png')       #食物 苹果 
 right = pygame.image.load('right.png')      #蛇头 
 body = pygame.image.load('body.png')        #身体 
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
+left = pygame.image.load('left.png')
 # 创建一个窗口
 screen = pygame.display.set_mode((660,480))
 FPSCLOCK=pygame.time.Clock()
 stwzx=240
 stwzy=120
 sdwz=[(180,90),(180,120),(210,120),(stwzx,stwzy)]
+
+setheading='right'
+snake_head=right
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到推出时间后退出
             exit() 
-    stwzx += 30
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != 'left':
+                setheading = 'right'
+                snake_head = right
+            if event.key == locals.K_LEFT and setheading != 'right':
+                setheading = 'left'
+                snake_head = left
+            if event.key == locals.K_UP and setheading != 'down':
+                setheading = 'up'
+                snake_head = up
+            if event.key == locals.K_DOWN and setheading != 'up':
+                setheading = 'down'
+                snake_head = down
+    if setheading == 'right':
+        stwzx+=30
+    elif setheading == 'left':
+        stwzx-=30
+    elif setheading == 'up':
+        stwzy-=30
+    else:
+        stwzy+=30
     sdwz.append((stwzx,stwzy))
     sdwz.pop(0)
     # 将背景画上去
     screen.blit(background,(0,0))
     # 将蛇头画上去
-    screen.blit(right,sdwz[-1])
+    screen.blit(snake_head,sdwz[-1])
     # 将身体画上去
     for i in range(len(sdwz)-1):
         screen.blit(body,sdwz[i])
@@ -33,7 +60,7 @@ while True:
     screen.blit(food,(360,300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(2)
+    FPSCLOCK.tick(3)
     
 
     
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