03 相機跟隨人物

player 爲玩家，該腳本加到Camera上。

using UnityEngine;
using System.Collections;

public class CameraFollowPlayer : MonoBehaviour
{
    [SerializeField]
    private Transform player;

    float cameraX;
    float cameraZ;

    private float y;
    private float z;

    // Use this for initialization
    void Start()
    {   
    }

    // Update is called once per frame
    void Update()
    {
        if (player)
        {
            cameraX = player.transform.position.x;
            cameraZ = player.transform.position.z;
            this.transform.position = new Vector3(cameraX, y, cameraZ + z);
        }
    }
}