诶呀~又没有更新微博，去拔牙了，疼死了，休息了几天过来接着写代码~

首先是Base。写了一个框架，照别人扒的。

Base分三部分，AILocomotion（AI移动），Steering（行为基类），Vehicle（角色模型基类）

首先是Steering

/// 
/// 角色行为基类/// 
public class Steering : MonoBehaviour {    /// 
    /// 操控权重    /// 
    public float weight = 1;        void Start () {         }            void Update () {        }    /// 
    /// 计算操控力。由子类去实现    /// 
    /// 
         public virtual Vector3 Force()    {        return Vector3.zero;    }}

其次是角色行为基类

/// 
/// 角色模型基类/// 
public class Vehicle : MonoBehaviour {    /// 
    /// 行为列表    /// 
    private Steering[] steerings;    /// 
    /// 操控力    /// 
    private Vector3 steeringForce;    /// 
    /// 最大的力    /// 
    public float maxForce;    /// 
    /// 角色质量    /// 
    private float mass = 1;     /// 
    /// 加速度    /// 
    protected Vector3 acceleration;    /// 
    ///控制力计算间隔时间    /// 
    private float computeInterval = 0.2f;    /// 
    /// 计时器    /// 
    private float timer;    /// 
    /// 位移速度    /// 
    public Vector3 speed;    /// 
    /// 最大速度    /// 
    public float maxSpeed = 10;    /// 
    /// 最大速度的平方    /// 
    public float sqrtMaxSpeed;    /// 
    /// 转向速度    /// 
    public float damping = 0.9f;    /// 
    /// 是否是平面    /// 
    public bool isPanar = false;    protected void Start () {        steeringForce = Vector3.zero;        timer = 0;        steerings = GetComponents
     
      ();        sqrtMaxSpeed = maxSpeed * maxSpeed;    }    void Update () { //每过computeInterval的时间就处理一下当前所有行为力的合力        timer += Time.deltaTime;        steeringForce = Vector3.zero;        if (timer > computeInterval)        {            foreach (Steering s in steerings)            {                if (s.enabled)                {                    steeringForce += s.Force() * s.weight;                }            }            steeringForce = Vector3.ClampMagnitude(steeringForce, maxForce);            acceleration = steeringForce / mass; //加速度 = 力 / 质量            timer = 0;        }    }}
     

最后是AI移动类

/// 
/// 角色移动类/// 
public class AILcomotion : Vehicle {    /// 
    /// AI角色控制器    /// 
    private CharacterController mController;    private Rigidbody mRigidbody;    /// 
    /// 每次移动的距离    /// 
    private Vector3 mMoveDistance;    void Start () {        mController = GetComponent
     
      ();        mRigidbody = GetComponent
      
       ();        mMoveDistance = Vector3.zero;        base.Start();    }        void FixedUpdate () {        speed = speed + acceleration * Time.fixedDeltaTime;        if (speed.sqrMagnitude > sqrtMaxSpeed)        {            speed = speed.normalized * maxSpeed; //float 转 Vector3        }        //计算角色移动距离        mMoveDistance = speed * Time.fixedDeltaTime;        if (isPanar)        {            speed.y = 0;        }                if (mController)        {            mController.SimpleMove(speed);        }        else if (mRigidbody == null || mRigidbody.isKinematic) //如果Rigidbody为空或受物理影响修改位置        {            transform.position += mMoveDistance;        }        else        {            mRigidbody.MovePosition(mRigidbody.position + mMoveDistance);        }        if (speed.sqrMagnitude > 0.0001f)        {            Vector3 newForward = Vector3.Slerp(transform.forward, speed, damping * Time.fixedDeltaTime);            if (isPanar)            {                newForward.y = 0;            }            transform.forward = newForward;        }    }}
      
     

之后就是各个行为的实现比如一个抵达行为

/// 
/// 抵达/// 
public class Arrive : Steering {    /// 
    /// 靠近的目标    /// 
    public GameObject target;    /// 
    /// 减速半径    /// 
    public float slowDownDistance;    /// 
    /// 预期速度    /// 
    private Vector3 mDesiredVelocity;    /// 
    /// AI角色    /// 
    private Vehicle mVehicle;    void Start()    {        mVehicle = GetComponent
     
      ();    }    public override Vector3 Force()    {        //与目标之间的距离        Vector3 toTarget = target.transform.position - transform.position;        if (mVehicle.isPanar)        {            toTarget.y = 0;        }        if (toTarget.magnitude < slowDownDistance)        {            //计算预期速度            mDesiredVelocity = toTarget - mVehicle.speed;        }        else        {            //计算预期速度            mDesiredVelocity = toTarget.normalized * mVehicle.maxSpeed;        }        if (mVehicle.isPanar)        {            mDesiredVelocity.y = 0;        }        //返回操控向量        return (mDesiredVelocity - mVehicle.speed);    }}
     

目前还没有学习行为树的写法，目前就是把各个行为都放到角色上运行，有点臃肿。