save project

snake.py

@@ -55,13 +55,12 @@ while True:
         y += 30
     position.append((x, y))
     if x==apx and y==apy:
-        apx=r.randint(0,660)
-        c=30-apx
-        apx=apx+c
-        apy=r.randint(0,480)
-        d=30-apy
-        apy=apy+d
-    position.pop(0)
+        w=r.randint(1,22)
+        apx=30*w-30
+        e=r.randint(1,16)
+        apy=30*e-30
+    else:    
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去