save project

snake.py

@@ -46,6 +46,19 @@ while True:
                 setheading = 'down'
                 setheading = 'down'
                 snake_head = down
                 snake_head = down
 
 
+            if event.key == locals.K_d and setheading != "left":
+                setheading = 'right'
+                snake_head = right
+            if event.key == locals.K_a and setheading != "right":
+                setheading = 'left'
+                snake_head = left
+            if event.key == locals.K_w and setheading != "down":
+                setheading = 'up'
+                snake_head = up
+            if event.key == locals.K_s and setheading != "up":
+                setheading = 'down'
+                snake_head = down
+
     # 设置贪吃蛇的头部坐标
     # 设置贪吃蛇的头部坐标
     if setheading == "right":
     if setheading == "right":
         x += 30
         x += 30
@@ -67,7 +80,7 @@ while True:
         position.pop(0)
         position.pop(0)
 
 
     if x>630 or x<0 or y>450 or y<0:
     if x>630 or x<0 or y>450 or y<0:
-        exit()
+        break
 
 
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))