AssetImportContext.DependsOnSourceAsset

参数

描述

创建资源和源资源之间的依赖关系。

资源取决于源资源。如果源资源发生变化或源资源的路径发生变化，则会重新导入资源。

using UnityEngine;
using UnityEditor;
using UnityEditor.Experimental.AssetImporters;
using System.IO;

[ScriptedImporter(1, "cube")]
public class CubeWithTextureImporter : ScriptedImporter
{
    public override void OnImportAsset(AssetImportContext ctx)
    {
        var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

        ctx.AddObjectToAsset("main obj", cube);
        ctx.SetMainObject(cube);

        var material = new Material(Shader.Find("Standard"));

        var lines = File.ReadAllLines(ctx.assetPath);
        var texturePath = lines[0];
        var texture = AssetDatabase.LoadAssetAtPath<Texture>(texturePath);
        if (texture != null)
        {
            material.SetTexture("_MainTex", texture);
            // add a dependency on the texture, such that if it changes or moves, we reimport the asset
            ctx.DependsOnSourceAsset(texturePath);
        }

        ctx.AddObjectToAsset("MaterialWithTexture", material);
    }
}