Finding local position and clamping movement

[Zpesh]

Hey!
I’m trying to create a fish enemy and want it to float up and down slightly while moving horizontally. I’ve tried to find it’s position once it is created. With this position I try and keep it at relatively the same height moving it up and down slightly. At the moment it only moves down and not back up again.

//Inspector Variables.
var fish01HorizontalSpeed = 6;
var fish01Position = 0;
var fish01VerticalSpeed = 0.5;

function Start () {
fish01Position = transform.position.y;

}

function Update () {
//Initiates movement to the right on the x axis.
transform.Translate(Vector3.up * fish01HorizontalSpeed * Time.deltaTime);
transform.Translate(Vector3.right * fish01VerticalSpeed * Time.deltaTime);
//Checks for horizontal position of fish and reverse direction.
if (transform.position.x >= 15)
{
fish01HorizontalSpeed = -6;
}
if (transform.position.x <= -15)
{
fish01HorizontalSpeed = 6;
}
//Check for vertical position of fish and reverse direction
if (transform.position.y >= fish01Position + 1)
{
fish01VerticalSpeed = -0.5;
}
if (transform.position.y <= fish01Position + -1)
{
fish01VerticalSpeed = 0.5;
}

}

[Vonni]

Swap Vector3.right and Vector3.up . I can’t see it being anything else here!, what is up in your scene?

[fafase]

I would recommend to use a cos/sin function:

void Update(){
    index += Time.deltaTime;
    float zPos=amplitude*(Mathf.Cos(omega*index))*Time.deltaTime;
    _transform.Translate ( -velocity.x*Time.deltaTime,0,zPos,Space.World);
}

You can have a look there for more info:

unitygems.com - unitygems Resources and Information.