Unity一些杂七杂八的笔记
coconutnut
 2022-05-01 22:59:08      

简单Player移动

  1. 主摄像头放到Player下

  2. 加script

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    using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;

    public class PlayerController : MonoBehaviour
    {
        CharacterController controller;
        public float speed = 5;

        void Start()
        {
            controller = GetComponent<CharacterController>();
        }

        void Update()
        {
            // movement
            float x = Input.GetAxis("Horizontal");
            float z = Input.GetAxis("Vertical");

            Vector3 move = transform.right * x + transform.forward * z;
            controller.Move(move * speed * Time.deltaTime);
        }
    }

NPC漫游

  1. 导入城市资源

  2. 给所有物体加Mesh Collider（否则后面检测人行道时
    Physics.Raycast无法检测）

  3. 给人行道设置layer为sidewalk，导航->对象->Navigation Static

  4. 给桌椅、房子等设置Navigation Static，Not Walkable

  5. 放一个胶囊当NPC，加组件Nav Mesh Agent

  6. 加script（ref：FULL 3D ENEMY AI in 6 MINUTES! || Unity Tutorial）

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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;

public class CitizenController : MonoBehaviour
{
    public NavMeshAgent agent;

    public LayerMask groudMask;

    // patroling
    Vector3 walkPoint;
    bool walkPointSet;
    public float walkPointRange = 20;

    void Start()
    {
        agent = GetComponent<NavMeshAgent>();
    }

    void Update()
    {
        Patroling();
    }

    private void Patroling()
    {
        if (!walkPointSet) SearchWalkPoint();

        if (walkPointSet)
            agent.SetDestination(walkPoint);

        Vector3 distanceToWalkPoint = transform.position - walkPoint;

        // walkpoint reached
        if (distanceToWalkPoint.magnitude < 1f)
            walkPointSet = false;
      
      	// not moving
        if(agent.speed < 1f)
            walkPointSet = false;
    }

    private void SearchWalkPoint()
    {
        // calculate random point in range
        float randomZ = Random.Range(-walkPointRange, walkPointRange);
        float randomX = Random.Range(-walkPointRange, walkPointRange);

        walkPoint = new Vector3(transform.position.x + randomX, transform.position.y, transform.position.z + randomZ);

        if (Physics.Raycast(walkPoint, -transform.up, 2f, groudMask))
            walkPointSet = true;
    }
}
  1. 设置script引用