save project

snake.py

@@ -55,12 +55,16 @@ while True:
     else:
     else:
         y += 30
         y += 30
     position.append((x, y))
     position.append((x, y))
-    if x = a_x and y = a_y:
+    if x == a_x and y == a_y:
         n1 = random.randint(1,22)
         n1 = random.randint(1,22)
         n2 = random.randint(1,16)
         n2 = random.randint(1,16)
         a_x = n1 * 30 - 30
         a_x = n1 * 30 - 30
         a_y = n2 * 30 - 30
         a_y = n2 * 30 - 30
-    position.pop(0)
+        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
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去