04 Unity3D人工智能AI-追逐

using UnityEngine;
using System.Collections;

public class SteeringForPursuit : Steering {

    public GameObject target;
    private Vector3 desiredVelocity;
    private Vehicle m_vehicle;
    private float maxSpeed;


    void Start () {
        m_vehicle = GetComponent<Vehicle>();
        maxSpeed = m_vehicle.maxSpeed;
    }


    public override Vector3 Force()
    {
        Vector3 toTarget = target.transform.position - transform.position;

        float relativeDirection = Vector3.Dot(transform.forward, target.transform.forward);

        if ((Vector3.Dot(toTarget, transform.forward) > ) && (relativeDirection < -f))
        {
            desiredVelocity = (target.transform.position - transform.position).normalized * maxSpeed;
            return (desiredVelocity - m_vehicle.velocity);
        }

        float lookaheadTime = toTarget.magnitude / (maxSpeed + target.GetComponent<Vehicle>().velocity.magnitude);

        desiredVelocity = (target.transform.position + target.GetComponent<Vehicle>().velocity * lookaheadTime - transform.position).normalized * maxSpeed;
        return (desiredVelocity - m_vehicle.velocity);

    }
}