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标题: 镜头平滑跟随代码 [打印本页]

作者: 晃晃 时间: 2011-8-12 10:47
标题: 镜头平滑跟随代码
老外发布的一个摄像机跟随代码，主要用于赛车游戏中，比官方默认的那个效果要更强大些，下面是详细功能简介：

Here's another smooth camera script. Designed to follow a car smoothly and give you the ability to zoom out when the car is moving. Hope someone makes use of it.

target = self explanatory
distance = Standard distance to follow object
height = The height of the camera
heightDamping = Smooth out the height position
lookAtHeight = An offset of the target
parentRigidbody = Used to determine how far the camera should zoom out when the car moves forward
rotationSnapTime = The time it takes to snap back to original rotation
distanceSnapTime = The time it takes to snap back to the original distance or the zoomed distance (depending on speed of parentRigidyBody)
distanceMultiplier = Make this around 0.1f for a small zoom out or 0.5f for a large zoom (depending on the speed of your rigidbody)

Looks best when you place the target transform on the front axle

代码如下：
using UnityEngine;
using System.Collections;
public class CarSmoothFollow : MonoBehaviour {
public Transform target;
public float distance = 20.0f;
public float height = 5.0f;
public float heightDamping = 2.0f;
public float lookAtHeight = 0.0f;
public Rigidbody parentRigidbody;
public float rotationSnapTime = 0.3F;
public float distanceSnapTime;
public float distanceMultiplier;
private Vector3 lookAtVector;
private float usedDistance;
float wantedRotationAngle;
float wantedHeight;
float currentRotationAngle;
float currentHeight;
Quaternion currentRotation;
Vector3 wantedPosition;
private float yVelocity = 0.0F;
private float zVelocity = 0.0F;
void Start () {
      lookAtVector =  new Vector3(0,lookAtHeight,0);
}
void LateUpdate () {
      wantedHeight = target.position.y + height;
      currentHeight = transform.position.y;
      wantedRotationAngle = target.eulerAngles.y;
      currentRotationAngle = transform.eulerAngles.y;
      currentRotationAngle = Mathf.SmoothDampAngle(currentRotationAngle, wantedRotationAngle, ref yVelocity, rotationSnapTime);
      currentHeight = Mathf.Lerp(currentHeight, wantedHeight, heightDamping * Time.deltaTime);
      wantedPosition = target.position;
      wantedPosition.y = currentHeight;
      usedDistance = Mathf.SmoothDampAngle(usedDistance, distance + (parentRigidbody.velocity.magnitude * distanceMultiplier), ref zVelocity, distanceSnapTime);
      wantedPosition += Quaternion.Euler(0, currentRotationAngle, 0) * new Vector3(0, 0, -usedDistance);
      transform.position = wantedPosition;
      transform.LookAt(target.position + lookAtVector);
}
}

作者: Asen 时间: 2011-9-17 10:52

作者: tc 时间: 2012-2-28 23:29
路过……

作者: 菜刀吻电线 时间: 2012-4-13 23:25
很经典，很实用，学习了!

作者: 晃晃 时间: 2012-5-23 23:20
楼主收集的可真全哦

作者: tc 时间: 2012-8-19 23:47
响应天帅号召，顶

作者: 奇 时间: 2012-10-25 23:39
不错哦,顶一下......

作者: 晃晃 时间: 2013-2-3 23:29
我看看就走，你们聊！

作者: C.R.CAN 时间: 2013-3-10 23:18
呵呵，很好，方便罗。

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