Use Rigbody&Capsule Collider to make FPS character controller
1.1 The mouse controls the viewing angle on the X axis and rotates on the Y axis
The code to move the angle of view through the mouse, this code is placed on the camera
New [FPMouseLook] script
private Transform cameraTransform;
private Vector3 cameraRotation; //保存每一帧存储下的坐标信息
public float mouseSesitivity;//修改鼠标灵敏度
public Vector2 maxMinAngle;//限制垂直视角区域
void Start()
{
cameraTransform = transform;
}
void Update()
{
var mouseX = Input.GetAxis("Mouse X");//将鼠标输入的X值赋予mouseX
var mouseY = Input.GetAxis("Mouse Y"); //将鼠标输入的Y值赋予mouseY
cameraRotation.y += mouseX * mouseSesitivity;//Y轴想要旋转需要在X轴移动
cameraRotation.x -= mouseY * mouseSesitivity;//X轴想要旋转需要在Y轴移动
cameraRotation.x = Mathf.Clamp(cameraRotation.x, maxMinAngle.x, maxMinAngle.y);//cameraRotation.x的值控制在maxMinAngle.x和maxMinAngle.y两个值之间
cameraTransform.rotation = Quaternion.Euler(cameraRotation.x, cameraRotation.y, 0);//更新相机的旋转角度
}
1.2 Script for player movement
Add this script to the player (new empty object ), the current player's movement is moving towards the rotation that cannot follow the camera direction, and the X and Z axes are locked.
player game object
Lock X, Y axis
New [FPMovement] script
public class FPMovement : MonoBehaviour
{
private Transform myTransform;
public float speed;
private Rigidbody myRigbody;
void Start()
{
myTransform = transform;
myRigbody = GetComponent<Rigidbody>();
}
private void FixedUpdate()
{
var h = Input.GetAxis("Horizontal");
var v = Input.GetAxis("Vertical");
var currentDirection= new Vector3(h, 0, v);
//从自身坐标转为世界坐标
currentDirection = myTransform.TransformDirection(currentDirection);
currentDirection *= speed;//当前方向乘以速度
var currentVelocity = myRigbody.velocity;//获取当前的速度
var velocityChange = currentDirection - currentVelocity;//得出需要以多少的速度进行行走
velocityChange.y = 0;//不需要计算y轴的数值
myRigbody.AddForce(velocityChange, ForceMode.VelocityChange);//添加力到刚体，让它随之移动
}1.3 The player moves with the direction of camera rotation
Modify [FPMouseLook] script
public class FPMouseLook : MonoBehaviour
{
private Transform cameraTransform;
[SerializeField] private Transform characterTransform;//记录玩家的位置，序列化到检视视图上或者使用public修饰
private Vector3 cameraRotation; //保存每一帧存储下的坐标信息
public float mouseSesitivity;//修改鼠标灵敏度
public Vector2 maxMinAngle;//限制垂直视角区域
void Start()
{
cameraTransform = transform;
}
void Update()
{
var mouseX = Input.GetAxis("Mouse X");//将鼠标输入的X值赋予mouseX
var mouseY = Input.GetAxis("Mouse Y"); //将鼠标输入的Y值赋予mouseY
cameraRotation.y += mouseX * mouseSesitivity;//Y轴想要旋转需要在X轴移动
cameraRotation.x -= mouseY * mouseSesitivity;//X轴想要旋转需要在Y轴移动
cameraRotation.x = Mathf.Clamp(cameraRotation.x, maxMinAngle.x, maxMinAngle.y);//cameraRotation.x的值控制在maxMinAngle.x和maxMinAngle.y两个值之间
cameraTransform.rotation = Quaternion.Euler(cameraRotation.x, cameraRotation.y, 0);//更新相机的旋转角度
characterTransform.rotation = Quaternion.Euler(0, cameraRotation.y, 0);//只需改变玩家旋转角度的Y值
}
}At this point, the first-person normal movement can be performed
1.4 Only when the player is controlled can the ground be moved, and the player can jump.
Modify [FPMovement] script
public class FPMovement : MonoBehaviour
{
private Transform myTransform;
public float speed;
public float gravity;//定义一个重力，自己赋值
public float jumpHeight;//定义跳跃的高度
private Rigidbody myRigbody;
private bool isGrounded;//判断是否玩家触地
void Start()
{
myTransform = transform;
myRigbody = GetComponent<Rigidbody>();
}
private void FixedUpdate()
{
if (isGrounded)
{
var h = Input.GetAxis("Horizontal");
var v = Input.GetAxis("Vertical");
var currentDirection = new Vector3(h, 0, v);
//从自身坐标转为世界坐标
currentDirection = myTransform.TransformDirection(currentDirection);
currentDirection *= speed;//当前方向乘以速度
var currentVelocity = myRigbody.velocity;//获取当前的速度
var velocityChange = currentDirection - currentVelocity;//得出需要以多少的速度进行行走
velocityChange.y = 0;//不需要计算y轴的数值
myRigbody.AddForce(velocityChange, ForceMode.VelocityChange);//添加力到刚体，让它随之移动
if (Input.GetButtonDown("Jump"))//判断是否摁下跳跃键
{
myRigbody.velocity = new Vector3(currentVelocity.x, JumpHeightSpeed(), currentVelocity.z);//跳跃，玩家坐标的x与z轴均使用自身坐标，y轴为自己写的方法
}
}
myRigbody.AddForce(new Vector3(0, -gravity * myRigbody.mass, 0));//如果未触地，则下坠
}
private float JumpHeightSpeed()//返回平方根，其数值作为玩家跳跃的y轴的值
{
return Mathf.Sqrt(2 * gravity * jumpHeight);
}
private void OnCollisionStay(Collision collision)
{
isGrounded = true;
}
private void OnCollisionExit(Collision collision)
{
isGrounded = false;
}
}