为什么说没有这个函数？冰川的第一关。。。这不是codecombat自己定义的吗
Where’s the problem? It’s not a function? I thought that it’s a function defined by CodeCombat.
Where’s the problem? It’s not a function? I thought that it’s a function defined by CodeCombat.
Level…well…level one in the Glacier… 
读第一到第六行说的东西。Vector 的确是 CodeCombat 已经定义好的Function。但是你用错了。你说的partnerPos 不是一个Vector。
所以说。。。一个vector是一个对象而不是位置吗？
So, a Vector is an item instead a position?
A vector IS a position, but it’s different from the (x,y) and the {“x”: x, “y”: y} positions. You have to convert the usual types of position into a vector if you want to add the vectors together.
Search online and see what vectors are
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