我有一个名为“Car”的类，它通过命令 forward 来模拟汽车的运动，并且由于我已经写过的其他一些（默认方向：右）而改变了方向。
E.g. [if starting from (0,0) (top left)]:
c = Car()
c.forward(8).right(3) increases the value of the "x" at first: (8, 0) an then changes direction to left (= from "right" the direction becomes "down") and exectues a forward of 3 (= the value of the "y" increased by 3 (8, 3).
我需要做的是在同一个类中修改特殊方法“ add ”来连接两个命令，以使第二个命令从第一个停止并返回新的“Car”对象（包含连接）。
E.g：
c1 = Car().right(3).left(3)
c2 = Car().left(3).right(3)
c = c1 + c2
Should (starting from (2,2)):
1.0)Change direction to right, execute a forward by "3" -> (2,5)
1.1)Change the direction to left, execute a forward by "3" -> (5,5)
From where the c1 object stopped:
2.0)Change direction to left, execute the forward -> (5,2)
2.1)Change direction to right, execute the last forward (8,2)
我怎么能这样做？