Advanced 3D character movement…

# Unity 第三人称角色控制器

实现思路

使用 CharacterController 组件处理移动与碰撞，配合重力模拟、状态机式速度切换和斜坡检测。

完整脚本

```csharp

using UnityEngine;

[RequireComponent(typeof(CharacterController))]

public class ThirdPersonController : MonoBehaviour

{

[Header("移动参数")]

public float walkSpeed = 4f;

public float runSpeed = 6f;

public float sprintSpeed = 10f;

public float rotationSpeed = 10f;

public float jumpHeight = 1.5f;

[Header("重力与攀爬")]

public float gravity = -20f;

public float climbSpeed = 3f;

public float wallCheckDistance = 0.6f;

[Header("斜坡")]

public float slideSpeed = 5f;

public float slopeLimit = 45f;

private CharacterController controller;

private Transform cam;

private Vector3 velocity;

private bool isClimbing;

void Start()

{

controller = GetComponent<CharacterController>();

cam = Camera.main.transform;

}

void Update()

{

Vector2 input = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));

Vector3 inputDir = new Vector3(input.x, 0, input.y).normalized;

// 相机相对方向

if (inputDir.magnitude >= 0.1f)

inputDir = Quaternion.Euler(0, cam.eulerAngles.y, 0) * inputDir;

// 速度状态：走/跑/冲刺

float targetSpeed = walkSpeed;

if (Input.GetKey(KeyCode.LeftShift)) targetSpeed = sprintSpeed;

else if (input != Vector2.zero) targetSpeed = runSpeed;

Vector3 move = inputDir * targetSpeed;

// 攀爬检测：按住空格贴墙且非地面

bool onWall = CheckWall();

isClimbing = onWall && !controller.isGrounded && Input.Ge