Unity笔记 Project03 第一人称移动
coconutnut
 2020-12-02 13:58:43      

https://www.youtube.com/watch?v=_QajrabyTJc&ab_channel=Brackeys

层级

  • Player（空物体）-> 加Character Controller；PlayerMovement（Script）
    • Body（圆柱）-> 删除Collider
    • Main Camera -> 放在人物头部的位置；MouseLook（Script）

旋转

x轴横向旋转，转动Player和Camera

y轴纵向旋转，只转动Camera

移动

使用Character Controller的方法

重力

Character Controller不能使用Rigidbody🤪，只能代码解决

还需要通过GroundCheck和Layer来解决碰到地面时下落速度清零的问题

Tips

  • Update()中Time.deltaTime获取从上次调用Update()至今的时间

  • 控制爬楼梯跨度&斜坡角度 -> Character Controller中设置

看教程里的总结，用Character Controller和用RigidBody来控制确实挺不一样的，后面得看看用哪个更合适

代码

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

public class MouseLook : MonoBehaviour
{
    public float mouseSensitivity = 100f;

    // 在Unity中把Player拖过来
    public Transform playerBody = null;

    private float xRotation = 0f;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        // Get Input
        float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;
        float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity * Time.deltaTime;

        // 纵向旋转Camera
        xRotation -= mouseY;
        // 不直接用Rotate，因为要先限制旋转角度
        xRotation = Mathf.Clamp(xRotation, -30f, 30f);
        transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);

        // 横向旋转Player
        playerBody.Rotate(Vector3.up * mouseX);
        Debug.Log(mouseX);
        Debug.Log("R:"+playerBody.transform.rotation);
        Debug.Log("LR:"+playerBody.transform.localRotation);
    }
}
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using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    public CharacterController controller;

    public float speed = 12f;
    public float gravity = -9.81f;
    public float jumpHeight = 3f;

    public Transform groundCheck;
    public float groundDistance = 0.4f;
    public LayerMask groundMask;

    Vector3 velocity;
    bool isGrounded;

    // Update is called once per frame
    void Update()
    {
        // 防止向下的速度无限增大
        isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

        if(isGrounded && velocity.y < 0){
            velocity.y = -2f;
        }

        // 移动
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        // 这样写是全局坐标，不管Player面对什么方向
        // Vector3 move = new Vector3(x, 0f, z);

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

        // 跳跃
        if(Input.GetButtonDown("Jump") && isGrounded){
            velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
        }

        // 模拟重力
        velocity.y += gravity * Time.deltaTime;
        controller.Move(velocity * Time.deltaTime);
    }
}