Move player use Input.getKeyDown unity - unity3d

Question

Hello guys i want move player between two position use Input.getKeyDown
firstPosition = new vector2(0,0); secondPosition = new vector2(0,5);
if player in firstPosition will go to secondPosition if player press E key
if player in secondPosition will go to firstPosition if player press E key
(movement method is transform.Translate)
my code
if (stairsOn)
{
inHelecopter.inHelecopter = true;
rig2d.simulated = !enabled;
if (transform.localPosition.y > stairS.maxHigh)//down
{
dirUp = false;
}
else if (transform.localPosition.y <= stairS.minHigh)
{//up
dirUp = true;
}
if (transform.localPosition.y >= stairS.maxHigh || transform.localPosition.y <= stairS.minHigh)
{
rig2d.simulated = enabled;
stairsOn = false;
}
if (dirUp)
{
transform.Translate(Vector3.up * 2 * Time.fixedDeltaTime, Space.Self);
}
else
{
transform.Translate(Vector3.down * 2 * Time.fixedDeltaTime, Space.Self);
}
}

Answer 1

Try this:
bool b = true;
void Update()
{
if (Input.GetKeyDown(KeyCode.E))
{
if (b)
{
transform.Translate(secondPosition - firstPosition);
b = false;
}
else
{
transform.Translate(firstPosition - secondPosition);
b = true;
}
}
}
In practice, I assign a variable that controls whether it is in the first or second position and moves the player towards the other.
In this script I use the transform.Translate method, but if you can I recommend that you simply assign the position like this:
bool b = true;
void Update()
{
if (Input.GetKeyDown(KeyCode.E))
{
if (b)
{
transform.position = secondPosition;
b = false;
}
else
{
transform.position = firstPosition;
b = true;
}
}
}
Good work!