CamerController

CammeraController.cs

using UnityEngine;
using System.Collections;

public class CameraController : MonoBehaviour {
	Vector3 worldUp=new Vector3(0f, 0f, 0f);
	public GameObject target;
	public int CameraMode = 1;
	void Start () {
	
	}
	void Awake() {
		this.target=GameObject.FindWithTag("target");
	}
	void Update () {
		if (!this.target) {
			this.target=GameObject.FindWithTag("target");
		}
		switch (this.CameraMode) {
		case 1:
			UpdateMode1();
			break;
		case 2:
			UpdateMode2();
			break;
		default:
			UpdateMode2();
			break;
		}
	}
	void UpdateMode2() {
		float tz = 0f+this.target.transform.position.z-5;
		if (tz>0) tz=0;	
		float ty = 15f+(tz*0.5f);		
		Vector3 wantedPosition = new Vector3(0, ty, tz);
		this.transform.position = Vector3.Lerp(this.transform.position, wantedPosition, Time.time * 0.0001f);		
		Quaternion wantedRotation = Quaternion.LookRotation(this.target.transform.position - this.transform.position, worldUp); 
		this.transform.rotation = Quaternion.Lerp(this.transform.rotation, wantedRotation, Time.time * 0.0001f);
	}
	void UpdateMode1() {		
		float dy = Mathf.Abs(this.target.transform.position.z*2);
		Vector3 movingTo = new Vector3(0, 15f-(0.5f*dy), -1.5f*dy);	
		this.transform.position-=(this.transform.position-movingTo)/20;
		this.transform.LookAt(this.target.transform, worldUp);
	}
	
}