using UnityEngine;
using System.Collections;
public class _Camera : MonoBehaviour {
private float distance = 10.0f;//摄像机距离追随目标前后距离
private float height = 5.0f;//摄像机追随目标高度
private float heightDamping = 2.0f;//摄像机上下移动平滑速度
private float rotationDamping = 3.0f;//摄像机旋转平滑速度
public Transform target;//追随目标
// Use this for initialization
void Start () {
}
void LateUpdate () {
float wantedRotationAngle = target.eulerAngles.y;//追随目标 欧拉角Y
float wantedHeight = target.position.y + height;//摄像机将要处于的高度
float currentRotationAngle = transform.eulerAngles.y;//摄像机当前欧拉角Y
float currentHeight = transform.position.y;//摄像机当前高度
// Damp the rotation around the y-axis//缓慢绕Y轴改变到目标欧拉角
currentRotationAngle = Mathf.LerpAngle (currentRotationAngle, wantedRotationAngle, rotationDamping * Time.deltaTime);
// Damp the height缓慢移动到目标高度
currentHeight = Mathf.Lerp (currentHeight, wantedHeight, heightDamping * Time.deltaTime);
// Convert the angle into a rotation将欧拉角转换为四元数
Quaternion currentRotation = Quaternion.Euler (0, currentRotationAngle, 0);
// Set the position of the camera on the x-z plane to:使摄像机处于XZ平面
// distance meters behind the target使摄像机处于目标后distance处
transform.position = target.position;
transform.position -= currentRotation * Vector3.forward * distance;
// Set the height of the camera设置摄像机高度
transform.position = new Vector3 (transform.position.x, currentHeight,transform.position.z);
// Always look at the target看向目标
transform.LookAt (target);
}
}
