unity通用角色控制脚本【走.跑.跳.下蹲】

以下是一个基本的Unity角色控制脚本，包含走、跑、跳和下蹲功能：

using UnityEngine;

public class CharacterController : MonoBehaviour
{
    public float walkSpeed = 5.0f;
    public float runSpeed = 10.0f;
    public float jumpForce = 10.0f;
    public float gravity = 20.0f;
    public float crouchSpeed = 2.5f;
    public float crouchHeight = 0.5f;
    public float standingHeight = 2.0f;

    private CharacterController controller;
    private Vector3 moveDirection = Vector3.zero;
    private float verticalVelocity = 0.0f;
    private bool isCrouching = false;

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

    void Update()
    {
        // Get input from player
        float horizontal = Input.GetAxis("Horizontal");
        float vertical = Input.GetAxis("Vertical");
        bool run = Input.GetKey(KeyCode.LeftShift);
        bool jump = Input.GetKeyDown(KeyCode.Space);
        bool crouch = Input.GetKeyDown(KeyCode.LeftControl);

        // Calculate movement direction and speed
        Vector3 move = transform.right * horizontal + transform.forward * vertical;
        moveDirection = Vector3.ClampMagnitude(move, 1.0f);
        float speed = run ? runSpeed : walkSpeed;

        // Apply gravity
        if (controller.isGrounded)
        {
            verticalVelocity = 0.0f;
        }
        else
        {
            verticalVelocity -= gravity * Time.deltaTime;
        }

        // Apply jump force
        if (jump && controller.isGrounded)
        {
            verticalVelocity = jumpForce;
        }

        // Apply crouch
        if (crouch && !isCrouching)
        {
            controller.height = crouchHeight;
            speed = crouchSpeed;
            isCrouching = true;
        }
        else if (!crouch && isCrouching)
        {
            // Check if there is enough space to stand up
            if (!Physics.SphereCast(transform.position, controller.radius, Vector3.up, standingHeight - crouchHeight))
            {
                controller.height = standingHeight;
                speed = run ? runSpeed : walkSpeed;
                isCrouching = false;
            }
        }

        // Move the character
        moveDirection *= speed;
        moveDirection.y = verticalVelocity;
        controller.Move(moveDirection * Time.deltaTime);
    }
}

这个脚本需要附加到您的角色对象上，并且需要在 Unity 中进行设置，以便将正确的值分配给 `walkSpeed`、`runSpeed`、`jumpForce`、`gravity`、`crouchSpeed`、`crouchHeight` 和 `standingHeight` 变量。