1、rb.MovePosition方法

public class PlayerController : MonoBehaviour
{public float speed = 5.0f;public float smoothing = 0.1f;public float rotationSpeed = 5.0f;private Vector3 targetPosition;private Rigidbody rb;void Start(){rb = GetComponent<Rigidbody>();targetPosition = transform.position;}void FixedUpdate(){float h = Input.GetAxisRaw("Horizontal");float v = Input.GetAxisRaw("Vertical");Vector3 direction = new Vector3(h, 0, v).normalized;if (direction.magnitude >= 0.1f){targetPosition += direction * speed * Time.deltaTime;Vector3 smoothedPosition = Vector3.Lerp(transform.position, targetPosition, smoothing);// 计算玩家应该面对的方向Vector3 lookDirection = targetPosition - transform.position;Quaternion targetRotation = Quaternion.LookRotation(lookDirection);// 平滑地旋转玩家的朝向rb.MoveRotation(Quaternion.Lerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime));rb.MovePosition(smoothedPosition);}}
}

2、rb.velocity方法

public class PlayerController : MonoBehaviour
{public float speed = 5.0f;public float rotationSpeed = 5.0f;private Vector3 targetPosition;private Quaternion targetRotation;private Rigidbody rb;void Start(){rb = GetComponent<Rigidbody>();targetPosition = transform.position;targetRotation = transform.rotation;}void FixedUpdate(){float h = Input.GetAxisRaw("Horizontal");float v = Input.GetAxisRaw("Vertical");Vector3 direction = new Vector3(h, 0, v).normalized;if (direction.magnitude >= 0.1f){targetPosition += direction * speed * Time.deltaTime;Vector3 lookDirection = targetPosition - transform.position;targetRotation = Quaternion.LookRotation(lookDirection);rb.velocity = direction * speed;}else{rb.velocity = Vector3.zero;}rb.MoveRotation(Quaternion.Lerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime));}
}

3、rb.AddForce 方法：接受一个向量参数，表示要施加的力的大小和方向。

public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;private Rigidbody rb;private float horizontalInput;private float verticalInput;void Start(){rb = GetComponent<Rigidbody>();}void FixedUpdate(){horizontalInput = Input.GetAxis("Horizontal");verticalInput = Input.GetAxis("Vertical");Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);rb.AddForce(movement * moveSpeed * Time.fixedDeltaTime, ForceMode.VelocityChange);}
}

4、transform.Translate方法：接受一个向量参数，表示要移动的方向和距离。

public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;public float rotateSpeed = 100.0f;// Update is called once per framevoid Update(){// 获取水平和垂直输入轴的值float horizontalInput = Input.GetAxis("Horizontal");float verticalInput = Input.GetAxis("Vertical");// 计算移动方向Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);// 移动游戏对象transform.Translate(movement * moveSpeed * Time.deltaTime);// 计算旋转方向Vector3 rotation = new Vector3(0.0f, horizontalInput, 0.0f);// 根据旋转方向计算旋转角度float rotationAngle = Vector3.SignedAngle(transform.forward, rotation, Vector3.up);// 计算旋转速度float rotationSpeed = Mathf.Clamp(Mathf.Abs(horizontalInput), 0.0f, 1.0f) * rotateSpeed;// 围绕游戏对象的y轴旋转transform.Rotate(0.0f, rotationAngle * rotationSpeed * Time.deltaTime, 0.0f);}
}

5、 Mathf.Lerp 函数可以平滑地将一个值从一个范围过渡到另一个范围。

//var t = 1 / ((transform.position - targetPosition).magnitude);//匀速移动
//gameObject.transform.position = Vector3.Lerp(transform.position, targetPosition, t*0.01f);public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;public float smoothTime = 0.3f;// Update is called once per framevoid Update(){// 获取水平和垂直输入轴的值float horizontalInput = Input.GetAxis("Horizontal");float verticalInput = Input.GetAxis("Vertical");// 计算移动方向Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);// 计算目标位置Vector3 targetPosition = transform.position + movement * moveSpeed;// 平滑地移动游戏对象transform.position = Vector3.Lerp(transform.position, targetPosition, smoothTime);}
}

6、 Vector3.SmoothDamp 函数：接受四个参数：current：当前值；target：目标值；currentVelocity：当前速度，这个值会在函数中被修改以实现平滑过渡；smoothTime：平滑时间，表示从当前值到目标值所需的时间。

public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;public float smoothTime = 0.3f;private Vector3 velocity = Vector3.zero;// Update is called once per framevoid Update(){// 获取水平和垂直输入轴的值float horizontalInput = Input.GetAxis("Horizontal");float verticalInput = Input.GetAxis("Vertical");// 计算移动方向Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);// 计算目标位置Vector3 targetPosition = transform.position + movement * moveSpeed;// 平滑地移动游戏对象transform.position = Vector3.SmoothDamp(transform.position, targetPosition, ref velocity, smoothTime);}
}

7、MoveTowards 方法：接受三个参数：当前位置、目标位置和移动速度。

public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;// Update is called once per framevoid Update(){// 获取水平和垂直输入轴的值float horizontalInput = Input.GetAxis("Horizontal");float verticalInput = Input.GetAxis("Vertical");// 计算移动方向Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);// 计算目标位置Vector3 targetPosition = transform.position + movement * moveSpeed;// 平滑地移动游戏对象transform.position = Vector3.MoveTowards(transform.position, targetPosition, moveSpeed * Time.deltaTime);}
}

8、Move 方法：接受一个向量参数，表示要移动的方向和距离。

public class PlayerController : MonoBehaviour
{public float moveSpeed = 5.0f;private CharacterController controller;private float horizontalInput;private float verticalInput;void Start(){controller = GetComponent<CharacterController>();}void FixedUpdate(){horizontalInput = Input.GetAxis("Horizontal");verticalInput = Input.GetAxis("Vertical");Vector3 movement = new Vector3(horizontalInput, 0.0f, verticalInput);controller.Move(movement * moveSpeed * Time.fixedDeltaTime);//controller.SimpleMove(movement * moveSpeed);//接受一个向量参数，表示要移动的方向和距离，同时会自动处理重力和碰撞检测。}
}