save project

snake.py

@@ -22,7 +22,6 @@ x, y = 240, 120
 a_x=360
 a_y=300
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
 setheading = "right"
 snake_head = right
 
@@ -44,10 +43,14 @@ while True:
             if event.key == locals.K_DOWN and setheading != "up":
                 setheading = 'down'
                 snake_head = down
+            #按键控制蛇移动1
+      
     if x==a_x and y==a_y:
-        a_x=random.randint(0,33)*30
-        a_y=random.randint(0,16)*30
+        a_x=random.randint(0,32)*30
+        a_y=random.randint(0,15)*30
         screen.blit(food, (a_x, a_y))
+    else:
+        
     # 苹果被吃后重新出现
 
     if setheading == "right":
@@ -58,21 +61,24 @@ while True:
         y -= 30
     else:
         y += 30
-    #按键控制蛇移动
+    #按键控制蛇移动2
 
     position.append((x, y))
     position.pop(0)
-    # 将蛇头的图画上去
-
-    screen.blit(background, (0, 0))
     # 将背景图画上去
+    screen.blit(background, (0, 0))
+
+    # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
+
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
 
     # 将果实画上去
     screen.blit(food, (a_x, a_y))
+
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
+print("game is over")
\ No newline at end of file