使用CharacterController组件制作Fps角色控制器

2.1鼠标控制视角在X，Y轴旋转

新建FPMouseLook脚本

    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mouseXvar mouseY = Input.GetAxis("Mouse Y"); //将鼠标输入的Y值赋予mouseYcameraRotation.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

2.2通过控制CharacterController组件，进行移动，跳跃

新建FPCharacterControllerMovement脚本

public class FPCharacterControllerMovement : MonoBehaviour
{private CharacterController characterController; //玩家身上的CharacterController组件private Transform characterTransform;//玩家位置信息private Vector3 movementDirection;public float movementSpeed;//移动速度public float gravity = 9.8f;//重力public float jumpHeight;//角色跳跃高度void Start(){characterController = GetComponent<CharacterController>();//获取组件characterTransform = transform;//获取玩家坐标信息     }void Update(){if (characterController.isGrounded)//CharacterController的isGrounded函数，判断玩家是否处于地面,如果玩家不处于运动状态则不能更改isGrounded的值{var horizontal = Input.GetAxis("Horizontal");var vertical = Input.GetAxis("Vertical");movementDirection = characterTransform.TransformDirection(new Vector3(horizontal, 0, vertical));//移动的方向if (Input.GetButtonDown("Jump"))//当摁下跳跃键，改变玩家的y轴{movementDirection.y = jumpHeight;}}movementDirection.y -= gravity * Time.deltaTime;characterController.Move(movementSpeed * Time.deltaTime * movementDirection);//以自定速度向指定方向移动,不具备重力}
}

2.3完成下蹲，奔跑，行走功能

这里用到了三目运算Input.GetKey(KeyCode.LeftShift) ? runSpeed : walkSpeed;

“?后的是满足前面条件时，：后是不满足时。”

相当于if(KeyCode.LeftShift){runSpeed}else{walkSpeed}

下蹲主要修改玩家身上的Character Controller组件中的Height变量

实现下蹲功能,下蹲行走和奔跑速度的切换。判断是否下蹲，是的话再分别修改其行走和奔跑的速度。

修改FPCharacterControllerMovement脚本

public class FPCharacterControllerMovement : MonoBehaviour
{private CharacterController characterController; //玩家身上的CharacterController组件private Transform characterTransform;//玩家位置信息private Vector3 movementDirection;public float runSpeed;//奔跑速度public float walkSpeed;//行走速度public float gravity = 9.8f;//重力public float jumpHeight;//角色跳跃高度public float crouchHeight;//下蹲的高度private float oldHeight;//原来高度public bool isCrouched;//判断是否蹲下public float crouchRunSpeed;//下蹲奔跑速度public float crouchwalkSpeed;//下蹲行走速度void Start(){characterController = GetComponent<CharacterController>();//获取组件characterTransform = transform;//获取玩家坐标信息     oldHeight = characterController.height;//获取原来高度}void Update(){float currentSpeed = walkSpeed;//声明一个临时变量存储当前速度if (characterController.isGrounded)//CharacterController的isGrounded函数，判断玩家是否处于地面,如果玩家不处于运动状态则不能更改isGrounded的值{var horizontal = Input.GetAxis("Horizontal");var vertical = Input.GetAxis("Vertical");movementDirection = characterTransform.TransformDirection(new Vector3(horizontal, 0, vertical));//移动的方向if (Input.GetButtonDown("Jump"))//当摁下跳跃键，改变玩家的y轴{movementDirection.y = jumpHeight;}  if (Input.GetKeyDown(KeyCode.C)){//判断是否蹲下，如果蹲下返回站立高度，如果目前是站立返回下蹲高度，将高度传入协程函数的参数中var currentHight = isCrouched ? oldHeight : crouchHeight;StartCoroutine(DoCrouch(currentHight));//使用协程函数isCrouched = !isCrouched;//将下蹲状态重置为对立状态}if (isCrouched)//{//三目运算符，判断下蹲状态是否摁下LeftShift，是的话执行crouchRunSpeed，否crouchwalkSpeed，赋值给当前速度currentSpeed = Input.GetKey(KeyCode.LeftShift) ? crouchRunSpeed : crouchwalkSpeed;}else{//三目运算符，判断是否摁下LeftShift，是的话执行runSpeed，否walkSpeed，赋值给当前速度currentSpeed = Input.GetKey(KeyCode.LeftShift) ? runSpeed : walkSpeed;} }movementDirection.y -= gravity * Time.deltaTime;//重力下落characterController.Move(currentSpeed * Time.deltaTime * movementDirection);//以自定速度向指定方向移动,不具备重力}private IEnumerator DoCrouch(float target)//进行蹲起高度渐变修改的协程函数{while (Mathf.Abs(characterController.height - target) > 0.1f)//当当前角色高度减去1的时候大于0.1执行此代码{float currentHeight = 0;//定义一个高度返回值yield return null;//要记得返回下 不然协程会卡掉characterController.height = Mathf.SmoothDamp(characterController.height, target, ref currentHeight, Time.deltaTime * 5);//渐渐过度效果}}
}