unity3D游戏开发笔记（一）

关于 ClianWorld 测试版使用脚本记录（一） :

描述：

C联致力于开发的开放世界虚拟基地，基于unity游戏引擎，按照《次元永生》界海世界观进行打造。

同时，我们将继续进行游戏性的开发，探索更多的游戏模式以及可玩性，最终打造划时代的产品。

记录：

1.基于Character Contorller的角色移动脚本（基础版）

功能：实现游戏角色的前后移动和方向旋转

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

public class PlayerMovement : MonoBehaviour
{
    private CharacterController controller;
    public float Speed = 10f;
    public float RotateSpeed = 1f;
    public float Gravity = -9.8f;
    private Vector3 Velocity = Vector3.zero;
    public Transform GroundCheck;
    public float CheckRadius = 0.2f;
    private bool IsGround;
    public LayerMask layerMask;

    public float JumpHeight = 3f;

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

    void Update()
    {
        MoveLikeWow();
    }

    private void MoveLikeWow()
    {
        IsGround = Physics.CheckSphere(GroundCheck.position, CheckRadius, layerMask);
        
        if(IsGround && Velocity.y<0)
        {
            Velocity.y = 0;
        }
        
        var horizontal = Input.GetAxis("Horizontal");
        var vertical = Input.GetAxis("Vertical");

        var move = transform.forward * Speed * vertical * Time.deltaTime;
        controller.Move(move);

        Velocity.y += Gravity + Time.deltaTime;
        controller.Move(Velocity * Time.deltaTime);

        transform.Rotate(Vector3.up, horizontal * RotateSpeed);
    }
}

2.全局场景跳转脚本（帮助界面为例）

功能：由一个场景(Scene)跳转到其他场景

using UnityEngine;
using UnityEngine.SceneManagement;

public class Help : MonoBehaviour
{
    // 菜单界面的场景名称
    public string menuSceneName = "help";

    void Update()
    {
        // 检测是否按下H键
        if (Input.GetKeyDown(KeyCode.H))
        {
            // 加载帮助菜单场景
            SceneManager.LoadScene("help");
        }
    }
}

3.绑定按钮场景跳转脚本（开始菜单为例）

功能：通过绑定到按钮上，实现场景跳转

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

public class FirstWorld : MonoBehaviour
{
    public void LoadGame()
    {
        SceneManager.LoadScene("firstworld");
    }
}

4.隐藏鼠标

(修改参数可以控制鼠标指针是否显示)

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

public class killmouse : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        Cursor.visible = false; // 隐藏鼠标
    }
}

5.退出游戏（EXIT）

功能：绑定按钮，实现点击退出游戏

using UnityEngine;
public class ExitGameButton : MonoBehaviour
{
    public void OnExitButtonClick()
    {
        // 调用Application类的方法来退出游戏
        Application.Quit();
    }
}

6.第三人称自由视角(镜头)

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

public class ThirdPersonCamera : MonoBehaviour
{
    private GameObject _mainCamera;
    [Header("Cinemachine")]
    [Tooltip("跟随的目标")]
    public GameObject CameraTarget;

    [Tooltip("上移动的最大角度")]
    public float TopClamp = 70.0f;

    [Tooltip("下移动的最大角度")]
    public float BottomClamp = -30.0f;

    private const float _threshold = 0.01f;
    private float _cinemachineTargetYaw;
    private float _cinemachineTargetPitch;
    private void Start()
    {
        if (_mainCamera == null)
        {
            _mainCamera = GameObject.FindGameObjectWithTag("MainCamera");
        }
        _cinemachineTargetYaw = CameraTarget.transform.rotation.eulerAngles.y;

    }

    private void Update()
    {
        if (_look.sqrMagnitude >= _threshold)
        {
            _cinemachineTargetYaw += _look.x;
            _cinemachineTargetPitch -= _look.y;
        }
        _cinemachineTargetYaw = ClampAngle(_cinemachineTargetYaw, float.MinValue, float.MaxValue);
        _cinemachineTargetPitch = ClampAngle(_cinemachineTargetPitch, BottomClamp, TopClamp);
        CameraTarget.transform.rotation = Quaternion.Euler(_cinemachineTargetPitch, _cinemachineTargetYaw, 0.0f);
    }

    private static float ClampAngle(float lfAngle, float lfMin, float lfMax)
    {
        if (lfAngle < -360f) lfAngle += 360f;
        if (lfAngle > 360f) lfAngle -= 360f;
        return Mathf.Clamp(lfAngle, lfMin, lfMax);
    }

    private Vector2 _look;
    public void OnLook(InputValue value)
    {
        _look = value.Get<Vector2>();
    }
}