如何让我的武器切换脚本上下滚动？

Question

所以你要做的就是将脚本附加到父对象上，当你滚动它时，它会滚动武器。问题是我可以向下滚动，但当我尝试向上滚动时，它会将我带回到最上面的武器。

下面是我的代码：

public class toggleweapon : MonoBehaviour
{
public int selectedWeapon = 0;
// Start is called before the first frame update
void Start()
{
    SelectWeapon();
}

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

    int previousSelectedWeapon = selectedWeapon;

    if (Input.GetAxis("Mouse ScrollWheel") > 0f)
    {
        if (selectedWeapon >= transform.childCount - 1)
            selectedWeapon = 0;
        else
            selectedWeapon++;
    }
    if (Input.GetAxis("Mouse ScrollWheel") < 0f)
    {
        if (selectedWeapon <= transform.childCount - 1)
            selectedWeapon = 0;
        else
            selectedWeapon--;
    }

    if (previousSelectedWeapon != selectedWeapon)
    {
        SelectWeapon();
    }
}

void SelectWeapon ()
{
    int i = 0;
    foreach (Transform weapon in transform)
    {
        if (i == selectedWeapon)
            weapon.gameObject.SetActive(true);
        else
            weapon.gameObject.SetActive(false);
        i++;
    }
}
}

Answer 1

我想你可能希望你的“下轮子”模块的工作方式有所不同：

    if (Input.GetAxis("Mouse ScrollWheel") < 0f)
    {
        if (selectedWeapon <= 0)
            selectedWeapon = transform.childCount - 1;
        else
            selectedWeapon--;
    }