【Unity】バイオハザード風の動きをするscriptとカメラについて ref: http://qiita.com/kuuki_yomenaio/items/1eac012d5e40ce47b4e2

CharacterController_Bio.js

#pragma strict

public  var speed : float = 3; 
private var direction : Vector3 = Vector3.zero;
private var playerController : CharacterController;
private var animator : Animator;

function Start() {
    playerController = GetComponent( CharacterController );
    animator = GetComponentInChildren( Animator );
}

function Update() {
    if( playerController.isGrounded ) {
        // 上下キーが押されたら
        if(Input.GetAxis("Vertical") != 0){
            var varticalMove = Input.GetAxis("Vertical");
            animator.SetFloat("Speed" , varticalMove);

            direction = new Vector3(0 , 0 , varticalMove);
            direction = transform.TransformDirection(direction);
            direction *= speed;
        }

        // 左右キーが押されたら
        if(Input.GetAxis("Horizontal") != 0){
            transform.Rotate(0 , 100 * Time.deltaTime * Input.GetAxis("Horizontal") , 0);
        }
    }
    direction.y += Physics.gravity.y * Time.deltaTime;
    playerController.Move( direction * Time.deltaTime ); 
}

SmoothFollow_Bio.js

#pragma strict

var target : Transform;
var distance = 3.0;
var height = 2.0;
var heightDamping = 0;
var rotationDamping = 1.0;

function LateUpdate () {
    if (!target) return;

    // Calculate the current rotation angles
    var wantedRotationAngle = target.eulerAngles.y;
    var wantedHeight = target.position.y + height;

    var currentRotationAngle = transform.eulerAngles.y;
    var currentHeight = transform.position.y;

    // Damp the rotation around the y-axis
    currentRotationAngle = Mathf.LerpAngle (currentRotationAngle, wantedRotationAngle, rotationDamping * Time.deltaTime);

    // Damp the height
    currentHeight = Mathf.Lerp (currentHeight, wantedHeight, heightDamping * Time.deltaTime);

    // Convert the angle into a rotation
    var currentRotation = Quaternion.Euler (0, currentRotationAngle, 0);

    // Set the position of the camera on the x-z plane to:
    // distance meters behind the target
    transform.position = target.position;
    transform.position -= currentRotation * Vector3.forward * distance;

    // Set the height of the camera
    transform.position.y = currentHeight;
    // Always look at the target
    transform.LookAt (target);
}