操控行为--------避墙

1. 操控行为基本概念

• 操控行为是指操纵控制角色，让它们能以模拟真实的方式在游戏世界中移动。
• 工作方式
  • 通过产生一定大小和方向的操控力，使角色以某种方式运动。

2. Wall Avoidance实现方式

• 完全受力操控
  • Wall Avoidance避免与墙碰撞
  • 一堵墙可以看做是一个多边形，墙的法线为墙的朝向

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• 操控力计算： 大小与触须前端穿透墙的长度成正比方向为墙的法线方向。

• 首先给准备好的墙添加上Tag，并且把它标记为Wall的层

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• Wall为第八层

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• 接着给Cube添加上WallAvoidance的代码控制
  public class WallAvoidance : MonoBehaviour {

   public Vector3 volocity;
   public float spinLength;
   void Start()
   {
    spinLength = 4;
   }
  
   void Update()
  {
    Vector3 steeringForce = new Vector3(0, 0, 0);
    RaycastHit hitForward, hitLeft, hitRight;
    Vector3 offset = new Vector3(0, 1, 0);
    Vector3 newPosition = transform.position + offset;
    Debug.DrawLine(newPosition, newPosition + spinLength * transform.forward, Color.green);
    Debug.DrawLine(newPosition, newPosition + spinLength * (transform.forward - transform.right), Color.green);
    Debug.DrawLine(newPosition, newPosition + spinLength * (transform.forward + transform.right), Color.green);
  
    if (Physics.Raycast(newPosition, transform.forward, out hitForward, spinLength, 1 << 8))
    {
        steeringForce += (spinLength - (newPosition - hitForward.point).magnitude) * hitForward.normal;
    }
    if (Physics.Raycast(newPosition, transform.forward - transform.right, out hitLeft, spinLength, 1 << 8))
    {
        steeringForce += (spinLength - (newPosition - hitLeft.point).magnitude) * hitLeft.normal;
    }
    if (Physics.Raycast(newPosition, transform.forward + transform.right, out hitRight, spinLength, 1 << 8))
    {
        steeringForce += (spinLength - (newPosition - hitRight.point).magnitude) * hitRight.normal;
    }
  
    Vector3 acc = steeringForce / 1;
    volocity += acc * Time.deltaTime;
  
    transform.position += volocity * Time.deltaTime;
  
    if (volocity.magnitude > 0.01)
    {
        Vector3 newForward = Vector3.Slerp(transform.forward, volocity, Time.deltaTime);
        newForward.y = 0;
        transform.forward = newForward;
    }
  }
      }
  

  • 实现的效果：

  • Cube的碰撞检测

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• 遇墙以后进行转向

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• 逐步转向

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源码来自蛮牛“寒江独钓9527”老师，谢谢。