使用unity3d搭建简单的场景以及第一人称角色的控制

一、搭建简单的游戏场景

1、打开unity3d编辑器，新建一个空工程。

2、创建若干个cube对象，通过伸缩变换形成地板，墙壁以及障碍物等。

3、创建平行灯，照亮场景

4、创建一个胶囊对象，作为角色

5、在胶囊对象上添加摄像机，作为角色的眼睛，摄像机的摄像范围极为角色的视野。

创建好的场景图如下：

二、通过鼠标的移动控制角色的视野

新建脚本MouseLook.cs，编辑控制代码，并将脚本组件添加到角色对象上。代码如下：

using System.Collections;using System.Collections.Generic;using UnityEngine;public class MouseLook : MonoBehaviour {    public enum RotationAxes    {        MouseXAndY = 0,        MouseX = 1,        MouseY = 2    }    public RotationAxes axes = RotationAxes.MouseXAndY;    public float sensitivityHor = 9.0f;    public float sensitivityVert = 9.0f;    public float minimumVert = -15.0f;    public float maximumVert = 45.0f;    private float _rotationX = 0;// Use this for initializationvoid Start () {        Rigidbody body = GetComponent<Rigidbody>();        if(body != null)        {            body.freezeRotation = true;        }}// Update is called once per framevoid Update () {if(axes == RotationAxes.MouseX)        {            //horizontal rotation here            transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityHor, 0);        }        else if(axes == RotationAxes.MouseY)        {            //vertical rotation here            _rotationX -= Input.GetAxis("Mouse Y") * sensitivityVert;            _rotationX = Mathf.Clamp(_rotationX, minimumVert, maximumVert);            float rotationY = transform.localEulerAngles.y;            transform.localEulerAngles = new Vector3(_rotationX, rotationY, 0);        }        else        {            //both horizontal and vertical rotation here            _rotationX -= Input.GetAxis("Mouse Y") * sensitivityVert;            _rotationX = Mathf.Clamp(_rotationX, minimumVert, maximumVert);            float delta = Input.GetAxis("Mouse X") * sensitivityHor;            float rotationY = transform.localEulerAngles.y + delta;            transform.localEulerAngles = new Vector3(_rotationX, rotationY, 0);        }}}

三、通过键盘控制角色移动

新建脚本KeyboardMove.cs，编辑代码，并将该脚本组件添加到角色对象中。代码如下：

using System.Collections;using System.Collections.Generic;using UnityEngine;[RequireComponent(typeof(CharacterController))][AddComponentMenu("Control Script/FPS Input")]public class KeyboardMove : MonoBehaviour {    public float speed = 6.0f;    public float gravity = 0;    private CharacterController _charController;     //用于引用CharacterController的变量// Use this for initializationvoid Start () {        _charController = GetComponent<CharacterController>();  //使用附加到相同对象上的其他组件}// Update is called once per framevoid Update () {        float deltaX = Input.GetAxis("Horizontal") * speed;        float deltaZ = Input.GetAxis("Vertical") * speed;        Vector3 movement = new Vector3(deltaX, 0, deltaZ);        movement = Vector3.ClampMagnitude(movement, speed); //将对角移动的速度限制为和沿着轴移动的速度一样        movement.y = gravity;        movement *= Time.deltaTime;        movement = transform.TransformDirection(movement);  //把movement向量从本地变换为全局坐标        _charController.Move(movement);  //告知CharacterController通过movement向量移动}}