koobas.hobune.stream
Use Lerp to rotate object
void Update () {
transform.Translate (Vector3.right * speed * Time.deltaTime);
if (Input.GetKeyDown (KeyCode.W))
{
transform.localEulerAngles = new Vector3(0,0,90);
}
if (Input.GetKeyDown (KeyCode.D))
{
transform.localEulerAngles = new Vector3(0,0,0);
}
if (Input.GetKeyDown (KeyCode.S))
{
transform.localEulerAngles = new Vector3(0,0,-90);
}
if (Input.GetKeyDown (KeyCode.A))
{
transform.localEulerAngles = new Vector3(0,0,180);
}
}
with this simple arrangement i am able to rotate the object but how can i rotate it smoothly.
I can not find lerp function which accepts current rotation and future rotation and some float.
please help.
I'd go with Quaternion.RotateTowards, as it's nice and compact. Example for W:
if (Input.GetKeyDown (KeyCode.W))
{
Quaternion currentRotation = transform.rotation;
Quaternion wantedRotation = Quaternion.Euler(0,0,90);
transform.rotation = Quaternion.RotateTowards(currentRotation, wantedRotation, Time.deltaTime * rotateSpeed);
}
Where rotateSpeed is a float variable just like speed. This will work for the majority of cases- lerping takes quite a bit of extra maths to get right if the distance you're going to rotate varies.
use transform.rotation : http://docs.unity3d.com/ScriptReference/Transform-rotation.html
convert to quaternion (or replace current euler values) : http://docs.unity3d.com/ScriptReference/Quaternion.Euler.html
slerp : http://docs.unity3d.com/ScriptReference/Quaternion.Slerp.html
how to correctly lerp : http://www.blueraja.com/blog/404/how-to-use-unity-3ds-linear-interpolation-vector3-lerp-correctly
difference between lerp and slerp : https://www.youtube.com/watch?v=uNHIPVOnt-Y#t=30
