Move GameObject over time

Question

I am learning Unity from a Swift SpriteKit background where moving a sprite\'s x Position is as straight forward as an running an action as below:

let moveLe         


        

Answer 1

You can use co-routines to do this. To do this, create a function that returns type IEnumerator and include a loop to do what you want:

private IEnumerator foo()
{
    while(yourCondition) //for example check if two seconds has passed
    {
        //move the player on a per frame basis.
        yeild return null;
    }
}

Then you can call it by using StartCoroutine(foo())

This calls the function every frame but it picks up where it left off last time. So in this example it stops at yield return null on one frame and then starts again on the next: thus it repeats the code in the while loop every frame.

If you want to pause for a certain amount of time then you can use yield return WaitForSeconds(3) to wait for 3 seconds. You can also yield return other co-routines! This means the current routine will pause and run a second coroutine and then pick up again once the second co-routine has finished.

I recommend checking the docs as they do a far superior job of explaining this than I could here