Unity
网络游戏黑暗之光笔记
第三章 创建游戏运行场景及角色控制
1. 创建场景导入资源等
2. 标签管理
- 使用标签来进行判定，使用const减少代码的出错率
//地面标签 public const string ground = "Ground";//const 标明这个是一个共有的不可变的变量 //玩家标签 public const string player = "Player";
3. 鼠标控制人物移动
鼠标点击地面特效，在角色上挂载脚本脚本
public GameObject effect_click_prefab;
void Update()
{
//检测鼠标的按下
//将鼠标的坐标转换为射线该
//射线与地面发生碰撞返回发生碰撞的点，然后让角色转向该点，开始移动。当移动到一定范围时停止移动。
if (Input.GetMouseButtonDown(0))
{
Ray ray=Camera.main.ScreenPointToRay(Input.mousePosition);
//保存碰撞信息
RaycastHit hitInfo;
bool isCollider = Physics.Raycast(ray, out hitInfo);
if(isCollider&& hitInfo.collider.tag ==Tags.ground)
{
//实例化点击的效果
showClickEffect(hitInfo.point);
}
}
void showClickEffect(Vector3 hitPoint)
{
hitPoint = new Vector3(hitPoint.x, hitPoint.y+0.1f,hitPoint.z);
GameObject.Instantiate(effect_click_prefab, hitPoint, Quaternion.identity);
}
}
- 控制主角的朝向（鼠标点击地面的时候转向）
增加两个对象
private Vector3 targetPosition = Vector3.zero; private bool isMoving = false;//表示鼠标是否按下
在update方法的 if(isCollider&& hitInfo.collider.tag ==Tags.ground)中增加
isMoving = true; LookAtTarget(hitInfo.point);
在update方法中增加两个判定语句
if (Input.GetMouseButtonUp(0))
{
isMoving = false;
}
if (isMoving)
{
//得到要移动的目标位置
//让主角朝向目标位置
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hitInfo;
bool isCollider = Physics.Raycast(ray, out hitInfo);
if (isCollider && hitInfo.collider.tag == Tags.ground)
{
LookAtTarget(hitInfo.point);
}
}
增加一个lookat方法
void LookAtTarget(Vector3 hitPoint)
{
targetPosition = hitPoint;
targetPosition = new Vector3(targetPosition.x, transform.position.y, targetPosition.z);
this.transform.LookAt(targetPosition);
}
- 控制主角的移动，添PlayerMove脚本挂载到角色上
默认值是当前位置不会在游戏一开始时就运行在PlayDir脚本Start函数中添加
targetPosition = transform.position；
public float speed = 4;
private PlayerDir dir;
private CharacterController controller;
void Start()
{
dir = this.GetComponent<PlayerDir>();
controller = this.GetComponent<CharacterController>();
}
void Update()
{
float distance = Vector3.Distance(dir.targetPosition, transform.position);
if (distance > 0.3f)
{
isMoving = true;
//state = PlayerState.Moving;
controller.SimpleMove(transform.forward * speed);
}
}
添加人物动画
控制人物动画播放的脚本
using UnityEngine;
using System.Collections;
public class PlayerAnimation : MonoBehaviour
{
private PlayerMove move;
void Start()
{
move = this.GetComponent<PlayerMove>();
}
void LateUpdate()
{
if (move.state == PlayerState.Moving)
{
PlayAnim("Run");
}
else if (move.state == PlayerState.Idle)
{
PlayAnim("Idle");
}
}
void PlayAnim(string animName)
{
GetComponent<Animation>().CrossFade(animName);
}
}
注意在void PlayAnim方法中教程中使用的旧版的代码，新版的代码为
GetComponent<Animation>().CrossFade(animName)；
- 完善的PlayerDir代码
public class PlayerDir : MonoBehaviour
{
public GameObject effect_click_prefab;
public Vector3 targetPosition = Vector3.zero;
private PlayerMove playerMove;
private bool isMoving = false;//表示鼠标是否按下
private void Start()
{
//默认值是当前位置不会在游戏一开始时就运行
targetPosition = transform.position;
playerMove = this.GetComponent<PlayerMove>();
}
void Update()
{
if (Input.GetMouseButtonDown(0))
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hitInfo;
bool isCollider = Physics.Raycast(ray, out hitInfo);
if (isCollider && hitInfo.collider.tag == Tags.ground)
{
isMoving = true;
ShowClickEffect(hitInfo.point);
LookAtTarget(hitInfo.point);
}
}
if (Input.GetMouseButtonUp(0))
{
isMoving = false;
}
if (isMoving)
{
//得到要移动的目标位置
//让主角朝向目标位置
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hitInfo;
bool isCollider = Physics.Raycast(ray, out hitInfo);
if (isCollider && hitInfo.collider.tag == Tags.ground)
{
LookAtTarget(hitInfo.point);
}
}
else {
if (playerMove.isMoving)
{
LookAtTarget(targetPosition);
}
}
}
//实例化出来点击的效果
void ShowClickEffect(Vector3 hitPoint)
{
hitPoint = new Vector3(hitPoint.x, hitPoint.y + 0.1f, hitPoint.z);
GameObject.Instantiate(effect_click_prefab, hitPoint, Quaternion.identity);
}
//让主角朝向目标位置
void LookAtTarget(Vector3 hitPoint)
{
targetPosition = hitPoint;
targetPosition = new Vector3(targetPosition.x, transform.position.y, targetPosition.z);
this.transform.LookAt(targetPosition);
}
}
4. 控制相机跟随主角的移动
- 在主摄像机挂在FollowCamera脚本
private Transform player;
private Vector3 offsetPosition;//位置偏移
void Start()
{
player = GameObject.FindGameObjectWithTag(Tags.player).transform;
//使相机永远朝向主角
transform.LookAt(player.position);
offsetPosition = transform.position - player.position;
}
void Update()
{
transform.position = offsetPosition + player.position;
}
- 使用鼠标滑动控制相机视野的拉近和拉远
定义一个 public float scrollSpeed = 10;
在上面的Update方法中增加 ScrollView()；方法
void ScrollView()
{
//print(Input.GetAxis("Mouse ScrollWheel"));//向后 返回负值 (拉近视野) 向前滑动 返回正值(拉远视野)
distance = offsetPosition.magnitude;
//获取鼠标中键的值
distance += Input.GetAxis("Mouse ScrollWheel") *- scrollSpeed;
distance = Mathf.Clamp(distance, 2, 18);
offsetPosition = offsetPosition.normalized * distance;
}
注意要在distance += Input.GetAxis("Mouse ScrollWheel") *- scrollSpeed;中的
- scrollSpeed负号，才是与实际效果一致
- 相机距离的限制
distance = Mathf.Clamp(distance, 2, 18);
- 相机的旋转
void RotateView()
{
//Input.GetAxis("Mouse X");//得到鼠标在水平方向的滑动
//Input.GetAxis("Mouse Y");//得到鼠标在垂直方向的滑动
if (Input.GetMouseButtonDown(1))
{
isRotating = true;
}
if (Input.GetMouseButtonUp(1))
{
isRotating = false;
}
if (isRotating)
{
transform.RotateAround(player.position, player.up, rotateSpeed * Input.GetAxis("Mouse X"));
Vector3 originalPos = transform.position;
Quaternion originalRotation = transform.rotation;
transform.RotateAround(player.position, transform.right, -rotateSpeed * Input.GetAxis("Mouse Y"));//影响的属性有两个 一个是position 一个是rotation
float x = transform.eulerAngles.x;
if (x < 10 || x > 80)
{//当超出范围之后，我们将属性归位原来的，就是让旋转无效
transform.position = originalPos;
transform.rotation = originalRotation;
}
}
offsetPosition = transform.position - player.position;
}
注意方向函数的符号，还有update方法中调用的顺序
限定旋转的方向
float x = transform.eulerAngles.x;
if (x < 10 || x > 80)
{//当超出范围之后，我们将属性归位原来的，就是让旋转无效
transform.position = originalPos;
transform.rotation = originalRotation;
}
5. 增加角色状态信息
给角色添加playerstatus脚本
public int grade = 1; public int hp = 100; public int mp = 100; public int coin = 200;//金币数量 public int attack = 20; public int attack_plus = 0; public int def = 20; public int def_plus = 0; public int speed = 20; public int speed_plus = 0; public int point_remain = 0;//剩余的点数