我正在制作一个背包,我试图让它像 Minecraft 一样,你只需按“E”,它就会打开,如果已经打开,他们就会关闭它。 Bty 我在 C# 中使用 Unity。
if (Input.GetKeyDown(backpackKey) && backpack.activeInHierarchy == false)
{
backpack.SetActive(true);
}
if (Input.GetKeyDown(backpackKey) && backpack.activeInHierarchy == true)
{
backpack.SetActive(false);
}
答案 0 :(得分:3)
您的两个 if 条件都将匹配:
要么使用 else if
使两个块都独占运行,或者..实际上你可以简单地做
if (Input.GetKeyDown(backpackKey))
{
// I would prefer using "activeSelf"
// If any parent is inactive your check might always return false even though the object
// itself is already set to active. Don't know if it has an impact on performance
// I just find it more convenient here since this is the value changed by "SetActive"
backpack.SetActive(!backpack.activeSelf);
}
答案 1 :(得分:0)
您缺少一个 else
语句:
if (Input.GetKeyDown(backpackKey))
{
if(backpack.activeInHierarchy == false)
{
backpack.SetActive(true);
} else {
backpack.SetActive(false);
}
}
在您的代码中,每当您尝试打开它时,您最终都会陷入第二个条件,现在为真,并立即关闭它。