统一-更新禁用游戏对象的顶点颜色

this video )这会改变玩家变换附近平面上网格的某一组顶点的alpha值。

void FixedUpdate()
{ 
    for(int i = 0; i < vertices.Length; i++)
    { 
        Vector3 v = fogPlane.transform.TransformPoint(vertices[i]);
        Vector3 playerOnMap = new Vector3(player.position.x, v.y, player.position.z);
        float dist = Vector3.SqrMagnitude(v - playerOnMap);
        // Set any vertices near the player to invisible
        if(dist < radiusSquared)
        {
            float alpha = Mathf.Min(colors[i].a, dist / radiusSquared);
            colors[i].a = alpha;
        }
    }
    mesh.colors = colors;
}

这看起来和 MeshFilter 的 mesh 在启用之前未正确设置。将其设置为OnEnable适用于所有后续的玩家移动,但我也需要在捕获之前捕获移动。

一个选项是在加载场景时启用然后禁用组件,但如果可能的话,我希望避免这种情况。不管这个平面是如何产生的,有没有一个好的方法来处理这个普遍的问题?

    void OnFogEnable()
    {
        // This will show false the first time it is Enabled
        Debug.Log("OnFogEnabled. Mesh match? " + (mesh == fogPlane.GetComponent<MeshFilter>().mesh));
        Debug.Log("OnFogEnabled. Vertices match? " + (vertices == mesh.vertices));
       
        mesh = fogPlane.GetComponent<MeshFilter>().mesh;
        vertices = mesh.vertices;
    }

Fog行为的其余初始化代码如下所示:

    public GameObject fogPlane;
    public Transform player;
    public float radius = 5;

    private float radiusSquared { get { return radius * radius; } }
    private Mesh mesh;
    private Vector3[] vertices;
    private Color[] colors

    void Start()
    {
        mesh = fogPlane.GetComponent<MeshFilter>().mesh;
        vertices = mesh.vertices;
        colors = new Color[vertices.Length];
        for(int i = 0; i < colors.Length; i++)
            colors[i] = Color.black;
        mesh.colors = colors;
    }