save project

snake.py

@@ -12,25 +12,65 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+my_font
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
+
+setheading = "right"
+snake_head = right
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x +=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":
+        x +=30
+    elif setheading =="left":
+        x -=30
+    elif setheading =="up":
+        y -=30
+    else:
+        y +=30
+    position.append((x,y)) 
+    if x==apple_x and y==apple_y:
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_x=num1*30-30
+        apple_y=num2*30-30
+        score+=10
+    else:
+        position.pop(0)  
+    if x<0 or x>630 or y<0 or y>450:
+        exit()    
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head,position[-1])
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)
+    
\ No newline at end of file