c# - Unity - 使用新输入系统/角色 Controller 让角色看着鼠标-6ren

c# - Unity - 使用新输入系统/角色 Controller 让角色看着鼠标

转载作者：行者123 更新时间：2023-12-04 07:20:32

一直遵循本指南 https://youtu.be/bXNFxQpp2qk?t=1280对于角色 Controller 。这让我开始进行基本的运动，在 21:20 的时候，他创造了一种让球员轮换的方法。

https://youtu.be/b0AQg5ZTpac以及面向鼠标位置的播放器的此视频。在 7:15 处，她解释了如何获取我将其存储在 positionToLookAt

中的 mousePosition

我希望我的角色的旋转用鼠标来完成，并且有一个像这里这样的视野:https://youtu.be/rQG9aUWarwE

一直试图让玩家面向鼠标位置的方向，但一直没有得到结果。这里显示https://imgur.com/gallery/mPPWogi视频结果和我的 PlayerInputs。

有同行提到更换四元数 targetRotation = Quaternion.LookRotation(positionToLookAt);经过四元数 targetRotation = Quaternion.LookRotation(positionToLookAt - transform.position);

但它不起作用并在 imgur 中产生了相同的结果。

有人可以帮我吗？我被卡住了，我不知道如何让这个角色看着鼠标。

这是方法的片段

   void handleRotation()
    {
        Vector3 positionToLookAt;

        // get mouse position
        Vector2 mousePosition = playerInput.CharacterControls.MousePosition.ReadValue<Vector2>();
        mousePosition = Camera.main.ScreenToWorldPoint(mousePosition);

        // insert mouse position to looking position
        positionToLookAt.x = currentMovement.x;
        //positionToLookAt.x = mousePosition.x;
        positionToLookAt.y = 0.0f;
        positionToLookAt.z = currentMovement.z;
        //positionToLookAt.z = mousePosition.y;

        Quaternion currentRotation = transform.rotation;

        if (isMovementPressed)
        {
            Quaternion targetRotation = Quaternion.LookRotation(positionToLookAt);
            transform.rotation = Quaternion.Slerp(currentRotation, targetRotation, rotationFactorPerFrame * Time.deltaTime);
        }

    }

如果有人想要我的完整代码，请看这里。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;


public class AnimationAndMovementController : MonoBehaviour
{

    PlayerInput playerInput;
    UnityEngine.CharacterController characterController;

    Animator animator;

    int isWalkingHash;
    int isRunningHash;


    Vector2 currentMovementInput;
    Vector3 currentMovement;
    Vector3 currentRunMovement;
    bool isMovementPressed;
    bool isRunPressed;
    float rotationFactorPerFrame = 15.0f;
    float runMultiplier = 3.0f;

    //Debug.Log(context.ReadValue<Vector2>());



    void Start()
    {
        
    }

    void Awake()
    {
        playerInput = new PlayerInput();
        characterController = GetComponent<UnityEngine.CharacterController>();
        animator = GetComponent<Animator>();

        isWalkingHash = Animator.StringToHash("isWalking");
        isRunningHash = Animator.StringToHash("isRunning");


        playerInput.CharacterControls.Move.started += onMovementInput;
        playerInput.CharacterControls.Move.canceled += onMovementInput;
        playerInput.CharacterControls.Move.performed += onMovementInput;

        playerInput.CharacterControls.Run.started += onRun;
        playerInput.CharacterControls.Run.canceled += onRun;

    }

    void onRun(InputAction.CallbackContext context)
    {
        isRunPressed = context.ReadValueAsButton();
    }


    void onMovementInput (InputAction.CallbackContext context)
    {

        currentMovementInput = context.ReadValue<Vector2>();
        currentMovement.x = currentMovementInput.x;
        currentMovement.z = currentMovementInput.y;

        currentRunMovement.x = currentMovementInput.x * runMultiplier;
        currentRunMovement.z = currentMovementInput.y * runMultiplier;

        isMovementPressed = currentMovementInput.x != 0 || currentMovementInput.y != 0;

    }




    void handleRotation()
    {
        Vector3 positionToLookAt;

        Vector2 mousePosition = playerInput.CharacterControls.MousePosition.ReadValue<Vector2>();
        mousePosition = Camera.main.ScreenToWorldPoint(mousePosition);

        positionToLookAt.x = currentMovement.x;
        //positionToLookAt.x = mousePosition.x;
        positionToLookAt.y = 0.0f;
        positionToLookAt.z = currentMovement.z;
        //positionToLookAt.z = mousePosition.y;

        Quaternion currentRotation = transform.rotation;

        if (isMovementPressed)
        {
            Quaternion targetRotation = Quaternion.LookRotation(positionToLookAt);
            transform.rotation = Quaternion.Slerp(currentRotation, targetRotation, rotationFactorPerFrame * Time.deltaTime);
        }

    }

    void handleAnimation()
    {
        bool isWalking = animator.GetBool(isWalkingHash);
        bool isRunning = animator.GetBool(isRunningHash);

        if (isMovementPressed && !isWalking) {
            animator.SetBool(isWalkingHash, true);
        }
        else if (!isMovementPressed && isWalking){
            animator.SetBool(isWalkingHash, false);
        }

        if ((isMovementPressed && isRunPressed) && !isRunning)
        {
            animator.SetBool(isRunningHash, true);
        }
        else if ((!isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }
        else if ((isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }

    }


    void handleGravity()
    {

       

        if (characterController.isGrounded) {
            float groundedGravity = -0.05f;
            currentMovement.y = groundedGravity;
            currentRunMovement.y = groundedGravity;
        } else {
            float gravity = -9.8f;
            currentMovement.y = gravity;
            currentRunMovement.y = gravity;
        }
    }




    // Update is called once per frame
    void Update()
    {
        handleRotation();
        handleAnimation();
        handleGravity();

        if (isRunPressed) {
            characterController.Move(currentRunMovement * Time.deltaTime);
        }
        else {
            characterController.Move(currentMovement * Time.deltaTime);
        }

        
    }


    void OnEnable()
    {
        playerInput.CharacterControls.Enable();
    }

    void OnDisable()
    {
        playerInput.CharacterControls.Disable();
    }
}

编辑

更新了完整代码，handleRotation() 是处理旋转的地方:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class AnimationAndMovementController : MonoBehaviour
{

    PlayerInput playerInput;
    CharacterController characterController;


    Animator animator;

    int isWalkingHash;
    int isRunningHash;

    Camera _camera;

    Vector2 currentMovementInput;
    Vector3 currentMovement;
    Vector3 currentRunMovement;

    bool isMovementPressed;
    bool isRunPressed;

    //float rotationFactorPerFrame = 15.0f;
    float runMultiplier = 3.0f;



    // Start is called before the first frame update
    void Start()
    {
        _camera = Camera.main;
    }

    void Awake()
    {
        playerInput = new PlayerInput();
        characterController = GetComponent<CharacterController>();
        animator = GetComponent<Animator>();

        isWalkingHash = Animator.StringToHash("isWalking");
        isRunningHash = Animator.StringToHash("isRunning");


        playerInput.CharacterControls.Move.started += onMovementInput;
        playerInput.CharacterControls.Move.canceled += onMovementInput;
        playerInput.CharacterControls.Move.performed += onMovementInput;

        playerInput.CharacterControls.Run.started += onRun;
        playerInput.CharacterControls.Run.canceled += onRun;

    }


    void onRun(InputAction.CallbackContext context)
    {
        isRunPressed = context.ReadValueAsButton();
    }


    void onMovementInput(InputAction.CallbackContext context)
    {

        currentMovementInput = context.ReadValue<Vector2>();
        currentMovement.x = currentMovementInput.x;
        currentMovement.z = currentMovementInput.y;

        currentRunMovement.x = currentMovementInput.x * runMultiplier;
        currentRunMovement.z = currentMovementInput.y * runMultiplier;

        isMovementPressed = currentMovementInput.x != 0 || currentMovementInput.y != 0;

    }



    void handleAnimation()
    {
        bool isWalking = animator.GetBool(isWalkingHash);
        bool isRunning = animator.GetBool(isRunningHash);

        if (isMovementPressed && !isWalking)
        {
            animator.SetBool(isWalkingHash, true);
        }
        else if (!isMovementPressed && isWalking)
        {
            animator.SetBool(isWalkingHash, false);
        }

        if ((isMovementPressed && isRunPressed) && !isRunning)
        {
            animator.SetBool(isRunningHash, true);
        }
        else if ((!isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }
        else if ((isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }

    }


    void handleGravity()
    {
        if (characterController.isGrounded)
        {
            float groundedGravity = -0.05f;
            currentMovement.y = groundedGravity;
            currentRunMovement.y = groundedGravity;
        }
        else
        {
            float gravity = -9.8f;
            currentMovement.y = gravity;
            currentRunMovement.y = gravity;
        }
    }



    void handleRotation()
    {

        // We're getting a Vector2, whereas we will need a Vector3
        // Get a z value based on camera, and include it in a Vector3
        var mousePosition = playerInput.CharacterControls.MousePosition.ReadValue<Vector2>();
        var mousePositionZ = _camera.farClipPlane * .5f;
        var mouseViewportPosition = _camera.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, mousePositionZ));


        // Do the same with the object's position
        var positionOnViewport = Camera.main.WorldToViewportPoint(transform.position);

        // Get the angle between the points
        var angle = AngleBetweenTwoPoints(positionOnViewport, mouseViewportPosition);

        // Apply the angle as the rotation of the object
        transform.rotation = Quaternion.Euler(new Vector3(0f, -angle, 0f));

    }


    float AngleBetweenTwoPoints(Vector3 a, Vector3 b)
    {
        return Mathf.Atan2(b.y - a.y, b.x - a.x) * Mathf.Rad2Deg;
    }



    // Update is called once per frame
    void Update()
    {

        handleRotation();
        handleAnimation();
        handleGravity();


        if (isRunPressed)
        {
            characterController.Move(currentRunMovement * Time.deltaTime);
        }
        else
        {
            characterController.Move(currentMovement * Time.deltaTime);
        }

    }


    void OnEnable()
    {
        playerInput.CharacterControls.Enable();
    }

    void OnDisable()
    {
        playerInput.CharacterControls.Disable();
    }


}

编辑 2:当前迭代

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class AnimationAndMovementController : MonoBehaviour
{

    PlayerInput playerInput;
    CharacterController characterController;


    Animator animator;

    int isWalkingHash;
    int isRunningHash;

    Camera _camera;

    Vector2 currentMovementInput;
    Vector3 currentMovement;
    Vector3 currentRunMovement;

    bool isMovementPressed;
    bool isRunPressed;

    float rotationFactorPerFrame = 15.0f;
    float runMultiplier = 3.0f;



    // Start is called before the first frame update
    void Start()
    {
        _camera = Camera.main;
    }

    void Awake()
    {
        playerInput = new PlayerInput();
        characterController = GetComponent<CharacterController>();
        animator = GetComponent<Animator>();

        isWalkingHash = Animator.StringToHash("isWalking");
        isRunningHash = Animator.StringToHash("isRunning");


        playerInput.CharacterControls.Move.started += onMovementInput;
        playerInput.CharacterControls.Move.canceled += onMovementInput;
        playerInput.CharacterControls.Move.performed += onMovementInput;

        playerInput.CharacterControls.Run.started += onRun;
        playerInput.CharacterControls.Run.canceled += onRun;

    }


    void onRun(InputAction.CallbackContext context)
    {
        isRunPressed = context.ReadValueAsButton();
    }


    void onMovementInput(InputAction.CallbackContext context)
    {

        currentMovementInput = context.ReadValue<Vector2>();
        currentMovement.x = currentMovementInput.x;
        currentMovement.z = currentMovementInput.y;

        currentRunMovement.x = currentMovementInput.x * runMultiplier;
        currentRunMovement.z = currentMovementInput.y * runMultiplier;

        isMovementPressed = currentMovementInput.x != 0 || currentMovementInput.y != 0;

    }



    void handleAnimation()
    {
        bool isWalking = animator.GetBool(isWalkingHash);
        bool isRunning = animator.GetBool(isRunningHash);

        if (isMovementPressed && !isWalking)
        {
            animator.SetBool(isWalkingHash, true);
        }
        else if (!isMovementPressed && isWalking)
        {
            animator.SetBool(isWalkingHash, false);
        }

        if ((isMovementPressed && isRunPressed) && !isRunning)
        {
            animator.SetBool(isRunningHash, true);
        }
        else if ((!isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }
        else if ((isMovementPressed && !isRunPressed) && isRunning)
        {
            animator.SetBool(isRunningHash, false);
        }

    }


    void handleGravity()
    {
        if (characterController.isGrounded)
        {
            float groundedGravity = -0.05f;
            currentMovement.y = groundedGravity;
            currentRunMovement.y = groundedGravity;
        }
        else
        {
            float gravity = -9.8f;
            currentMovement.y = gravity;
            currentRunMovement.y = gravity;
        }
    }

    void handle_isRunPressed()
    {
        if (isRunPressed)
        {
            characterController.Move(currentRunMovement * Time.deltaTime);
        }
        else
        {
            characterController.Move(currentMovement * Time.deltaTime);
        }
    }

    void handleRotation()
    {
        var mousePosition = playerInput.CharacterControls.MousePosition.ReadValue<Vector2>();
        var mousePositionZ = _camera.farClipPlane * .5f;

        var mouseWorldPosition = _camera.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, mousePositionZ)); // _camera.ScreenToViewportPoint(mousePosition);

        // Get the angle between the points
        // Use the x and z from the object/mouse, since we're looking along the y axis
        var angle = AngleBetweenTwoPoints(new Vector2(transform.position.x, transform.position.z), new Vector2(mouseWorldPosition.x, mouseWorldPosition.z));

        transform.rotation = Quaternion.Euler(new Vector3(0f, -angle, 0f));
    }


    float AngleBetweenTwoPoints(Vector3 a, Vector3 b)
    {
        return Mathf.Atan2(b.y - a.y, b.x - a.x) * Mathf.Rad2Deg;
    }



    // Update is called once per frame
    void Update()
    {
        handleRotation();
        handleAnimation();
        handleGravity();

        handle_isRunPressed();
    }


    void OnEnable()
    {
        playerInput.CharacterControls.Enable();
    }

    void OnDisable()
    {
        playerInput.CharacterControls.Disable();
    }


}

不幸的是，我的代码在 handleRotation() 中旋转仍然无法按预期工作

编辑 3:

void handleRotation()
    {
        // We're getting a Vector2, whereas we will need a Vector3
        // Get a z value based on camera, and include it in a Vector3
        Vector2 mousePosition = playerInput.CharacterControls.MousePosition.ReadValue<Vector2>();

        var mousePositionZ = _camera.farClipPlane * .5f;

        Vector3 mouseViewportPosition = _camera.ViewportToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, _camera.transform.position.y));


        Debug.Log("MousePos: " + mouseViewportPosition);

        Vector3 positionToLookAt;

        positionToLookAt.x = mouseViewportPosition.x;
        positionToLookAt.y = 0.0f;
        //positionToLookAt.z = currentMovement.z;
        positionToLookAt.z = mouseViewportPosition.z;

        Quaternion currentRotation = transform.rotation;
        
        Quaternion targetRotation = Quaternion.LookRotation(positionToLookAt - transform.position);
        transform.rotation = Quaternion.Slerp(currentRotation, targetRotation, rotationFactorPerFrame * Time.deltaTime);
        
    }

它在旋转。但不正确。

最佳答案

更新拍摄 2

这是我在 Update() 中的完整代码:

var mousePosition = _playerInput.Player.MousePosition.ReadValue<Vector2>();
var mousePositionZ = _camera.farClipPlane * .5f;

var mouseWorldPosition = _camera.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, mousePositionZ)); // _camera.ScreenToViewportPoint(mousePosition);

// Get the angle between the points
// Use the x and z from the object/mouse, since we're looking along the y axis
var angle = AngleBetweenTwoPoints(new Vector2(transform.position.x, transform.position.z), new Vector2(mouseWorldPosition.x, mouseWorldPosition.z));

transform.rotation = Quaternion.Euler(new Vector3(0f, -angle, 0f));

辅助函数是一样的:

float AngleBetweenTwoPoints(Vector2 a, Vector2 b)
{
    return Mathf.Atan2(b.y - a.y, b.x - a.x) * Mathf.Rad2Deg;
}

更新

我想出了如何按照 Joseph 最初尝试的方式做到这一点。ScreenToWorldPoint 确实可以在新的输入系统中正常工作。问题在于我们尝试使用它的方式。它需要一个 Vector3!

你不能这样做:

// Don't do this, it wont work!
var mousePosition = _playerInput.Player.MousePosition.ReadValue<Vector2>();
var mouseViewportPosition = _camera.ScreenToWorldPoint(mousePosition);

你需要这样做:

// We're getting a Vector2, whereas we will need a Vector3
// Get a z value based on camera, and include it in a Vector3
var mousePosition = _playerInput.Player.MousePosition.ReadValue<Vector2>();
var mousePositionZ = _camera.farClipPlane * .5f;
var mouseViewportPosition = _camera.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, mousePositionZ));

原答案:

你的例子有一些问题......我想你正在编辑它以根据移动方向进行旋转？可能现在引擎中的鼠标位置有问题...我注意到其他一些线程提示输入值不一样，但我不确定到什么程度.可能无法转换为世界坐标？

出于某种原因，这对我不起作用，它总是吐出 (0.0, 10.0, 0.0):

var mouseWorldPosition = Camera.main.ScreenToWorldPoint(mousePosition);

这是我能够开始工作的:

// Get the mouse position from the NEW input system
var mousePosition = _playerInput.Player.MousePosition.ReadValue<Vector2>();

// Convert the mousePosition to the VIEWPORT
var mouseViewportPosition = Camera.main.ScreenToViewportPoint(mousePosition);

// Do the same with the object's position
var positionOnViewport = Camera.main.WorldToViewportPoint(transform.position);

// Get the angle between the points
var angle = AngleBetweenTwoPoints(positionOnViewport, mouseViewportPosition);

// Apply the angle as the rotation of the object
transform.rotation = Quaternion.Euler(new Vector3(0f, -angle, 0f));

大意来自这里，包括这个函数(https://answers.unity.com/questions/855976/make-a-player-model-rotate-towards-mouse-location.html):

float AngleBetweenTwoPoints(Vector3 a, Vector3 b)
{
    return Mathf.Atan2(b.y - a.y, b.x - a.x) * Mathf.Rad2Deg;
}

请注意，这并不完美……角度稍微偏离了……不确定为什么会这样。你可以在这里看到它有点夸张:

我认为这里故事的寓意是检查每个阶段的输入，看看它是什么样子以及它是如何转换的。现在我们知道一些新的输入值可能会关闭，您可以使用旧系统的鼠标位置，或者将我的示例与您提到的其他一些方法结合起来。

关于c# - Unity - 使用新输入系统/角色 Controller 让角色看着鼠标，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/68530495/

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