Jumpy object movement and camera movement

Questions & Answers
1

Hi,

I am a beginner at Unity and am currently trying to create a simple platformer that works in only the x and y axis. I have my camera following the player object in the scene (just a simple capsule at the moment with a character controller attached). When I move the player object (the capsule) it has quite visibly jarring stutter on screen, this also affect the camera making it a little jumpy too. Here is the code

Player.js

var health = 100;
var mana = 100;
var moveSpeed = 5;
var jumpSpeed = 10;
var gravity = 20.0;

private var moveDir : Vector3 = Vector3.zero;

function Start () 
{

}

function Update () 
{
	var controller : CharacterController = GetComponent(CharacterController);
	
	// calculate movement on the x-axis
	moveDir.x = Input.GetAxis("Horizontal") * moveSpeed;
	moveDir = transform.TransformDirection(moveDir);

	// set the jumpHeight when the Jump key is pressed
    if(controller.isGrounded)
    {
        if(Input.GetButtonDown("Jump")) 
        {
        	moveDir.y = jumpSpeed;
        }

    }
    
    // calculate movement on the y-axis with gravity applied
    moveDir.y -= gravity * Time.deltaTime;
    controller.Move(moveDir * Time.deltaTime);
}

PlayerCamera.js

var target : Transform;

function Start () 
{

}

function Update () 
{
	transform.LookAt(target);
	transform.position.x = target.position.x;
	transform.position.y = target.position.y;
}
2

You can use Vector3.SmoothDamp. The provided example is exactly showing how you could achieve your camera.