ブログ『Unity講座chap3』スクリプト『Follow.cs』

Follow.cs

using UnityEngine;
using System.Collections;

public class Follow : MonoBehaviour {

	public GameObject target;//ターゲット（追尾対象）格納変数
	public float cameraSpeed;//スピード（カメラの速さ）格納変数
	Vector3 distance;//距離（ターゲットとどれくらいの距離を保つか）格納変数

	// Use this for initialization
	void Start () {
		distance = target.transform.position - transform.position;
	}
	
	// Update is called once per frame
	void LateUpdate () {
		Vector3 cameraDistance = target.transform.position - distance;
		transform.position = Vector3.Lerp (transform.position,cameraDistance,Time.deltaTime * cameraSpeed);
	}
}