save project

snake.py

@@ -45,16 +45,20 @@ while True:
     for i in position[:-1]:
        if i==(x,y):
            exit()
+    if x>630 or x<0 or y>450 or y<0:
+        exit()
+    else:
+
             
     # 设置贪吃蛇的头部坐标
-    if setheading == "right":
-        x += 30
-    elif setheading == "left":
-        x -= 30
-    elif setheading == "up":
-        y -= 30
-    else:
-        y += 30
+        if setheading == "right":
+            x += 30
+        elif setheading == "left":
+            x -= 30
+        elif setheading == "up":
+            y -= 30
+        else:
+            y += 30
     position.append((x, y))