Question

我当前正在使用一个代码，该代码允许我将放置到场景中的3d对象旋转，但是由于它会干扰我用于放大和

我已经将滚轮旋转设置为0，因此它不再旋转对象，但是正在努力实现如何实现允许我改用键盘的代码。

由于我仍然是C＃的新手，因此我在如何做到这一点上一直处于很大的挣扎中，并且很难找到免费的资源来学习该语言。

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

public class GroundPlacementTest : MonoBehaviour {

[SerializeField]
private GameObject placeableObjectPrefab;

[SerializeField]
private KeyCode newObjectHotkey = KeyCode.A;

private GameObject currentPlaceableObject;

private float mouseWheelRotation;

private void Update()
{
    HandleNewObjectHotkey();

    if (currentPlaceableObject != null)
    {
        MoveCurrentObjectToMouse();
        RotateFromMouseWheel();
        ReleaseIfClicked();
    }
}

private void HandleNewObjectHotkey()
{
    if (Input.GetKeyDown(newObjectHotkey))
    {

        if (currentPlaceableObject != null)
        {
            Destroy(currentPlaceableObject);
        }
        else
        {
            currentPlaceableObject = Instantiate(placeableObjectPrefab);
            currentPlaceableObject.layer = LayerMask.NameToLayer("Ignore Raycast");
        }
    }
}

private void MoveCurrentObjectToMouse()
{
    Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

    RaycastHit hitInfo;
    if (Physics.Raycast(ray, out hitInfo))
    {
        currentPlaceableObject.transform.position = hitInfo.point;
        currentPlaceableObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, hitInfo.normal);

    }
}

private void RotateFromMouseWheel()
{
    Debug.Log(Input.mouseScrollDelta);
    mouseWheelRotation += Input.mouseScrollDelta.y;
    currentPlaceableObject.transform.Rotate(Vector3.up, mouseWheelRotation * 0f);
}

private void RotateFromMouseWheel()
{
    Debug.Log(Input.mouseScrollDelta);
    mouseWheelRotation += Input.mouseScrollDelta.y;
    currentPlaceableObject.transform.Rotate(Vector3.up, mouseWheelRotation * 0f);
}

private void ReleaseIfClicked()
{
    if (Input.GetMouseButtonDown(0))
    {
        currentPlaceableObject.layer = LayerMask.NameToLayer("Default");
        currentPlaceableObject = null;
    }
}

我想使用键盘来旋转对象，而不是使用滚轮来旋转它。

Answer 1

好吧，而不是

private void RotateFromMouseWheel()
{
    Debug.Log(Input.mouseScrollDelta);
    mouseWheelRotation += Input.mouseScrollDelta.y;
    currentPlaceableObject.transform.Rotate(Vector3.up, mouseWheelRotation * 0f);
}

（顺便说一句，您有两次）可以使用Input.GetKeyDown

// Set in the inspector
public float RotationSpeed;

private void RotateFromMouseWheel()
{
    // whatever key you want
    // this makes one rotation each click
    // if you want it continous see below
    if(!Input.GetKeyDown(KeyCode.R)) return;

    currentPlaceableObject.transform.Rotate(Vector3.up, RotationSpeed);
}

或持续按住按钮Input.GetKey和Time.deltaTime

连续旋转

private void RotateFromMouseWheel()
{
    if(Input.GetKey(KeyCode.R))
    {
        currentPlaceableObject.transform.Rotate(Vector3.up, RotationSpeed * Time.deltaTime);
    }
}

am having a hard time finding free resources to learn the language

您可以例如看看其中一个教程（这是在google上寻找“ Unity键盘输入”时的前三个结果...）并看看Unity API（请参见上面的链接）

https://www.youtube.com/watch?v=r-hM-yzH_-E

https://www.youtube.com/watch?v=chMxcadsT4U

https://www.youtube.com/watch?v=d0WZf1CmN3k

需要帮助来编辑代码以在键盘而不是滚轮上旋转

1 个答案: