save project

snake.py

@@ -29,13 +29,13 @@ while True:
             if event.key == locals.K_right and setheading != "left":
                 setheading="right"
                 snake_head=right 
-            if event.key == locals.K_left:
+            if event.key == locals.K_left and setheading != "right":
                 setheading="left"
                 snake_head=left 
-            if event.key == locals.K_up:
+            if event.key == locals.K_up and setheading != "down":
                 setheading="up"
                 snake_head=up 
-            if event.key == locals.K_down:
+            if event.key == locals.K_down and setheading != "up":
                 setheading="down"
                 snake_head=down         
     x += 30