Unity 3D在GetButtonDown上的特定时间内移动对象

Question

I've got an empty game object filled with all my player components, within it is a model which animates itself when the controls are pressed which are instantiated by GetButtonDown. Currently everything in the player game object moves instantly to the next point (basically teleports there with no transition). Is there a way I can get it all to move over say 1 second rather than going there instantly? Here's what happens on GetButtonDown

    if (Input.GetButtonDown ("VerticalFwd"))
    {

        amountToMove.y = 1f;
        transform.Translate (amountToMove);
    }

I've tried transform.Translate (amountToMove * Time.deltaTime * randomint); and all sorts of ways to use Time however that doesn't seem to work even though it seems the most logical way. I'm guessing because the GetButtonDown only "runs" when it is pressed and has no update function to "time" the move every frame? Any ideas? amountToMove is saved as a Vector3 aswell.

Answer 1

The first formula is wrong. The correct formula would be:

this.transform.position += (Distance/MoveTime) * time.deltatime 

Answer 2

Try .Lerp, it runs as a coroutine interpolating a value over some amount of time Vector3.Lerp(Vector3 start, Vector3 end, float time)

See documentation here

This should give you a rough idea of whats going on

Vector3 Distance = End - Start; 
// this will return the difference 

this.transform.position += Distance/time.deltatime * Movetime 
// this divides the Distance equal to the time.deltatime.. (Use Movetime to make the movement take more or less then 1 second

IE: If the Distance is 1x.1y.1z, and time.deltatime is .1 and Movetime is 1.... you get a movement of .1xyz per tick, taking 1 second to reach the end point

FYI: transform.Translate works as a fancy .position +=, for this purpose you can use them interchangeably

EDIT Here are a few solutions

Easy ::

Vector3 amountToMove = new Vector3(0,1,0); //  Vector3.up is short hand for (0,1,0) if you want to use that instead

if (Input.GetButtonDown ("VerticalFwd"))
    {

        transform.position = Vector3.Lerp(transform.position ,transform.position + amountToMove, 1);
    }

Hard and probably unnecessary ::

Write a Coroutine that does a kind of Linear interpolation for your specific application See documentation here