static void ImportDatabase(bool assetsOnly)
{
string inputDirectory = "Assets/Input";
string bundleOutputDirectory = "Assets/Bundles";
string prefabTempDirectory = "Assets/Prefabs/FromImporter";
string bundleName = "elements.db";
int errorCount = 0;
if (!Directory.Exists(inputDirectory))
{
EditorUtility.DisplayDialog("Input Not Found", $"Input directory “{inputDirectory}” not found.", "Close");
return;
}
// Load JSON file to process.
var jsonAssets = new List <TextAsset>();
foreach (string guid in AssetDatabase.FindAssets("t:TextAsset", new[] { inputDirectory }))
{
var assetPath = AssetDatabase.GUIDToAssetPath(guid);
if (Path.GetExtension(assetPath).ToLower() == ".json")
{
jsonAssets.Add(AssetDatabase.LoadAssetAtPath <TextAsset>(assetPath));
}
}
if (jsonAssets.Count == 0)
{
EditorUtility.DisplayDialog("No Files", $"No JSON files were found in “{inputDirectory}”.", "Close");
return;
}
if (jsonAssets.Count > 1)
{
EditorUtility.DisplayDialog("Too Many Files", $"More than one JSON file found in “{inputDirectory}”.", "Close");
return;
}
// Parse the database from JSON.
var fm = FeatureModel.FromJson(jsonAssets[0].text);
// Generate prefab assets that will represent placeable elements at runtime.
if (!Directory.Exists(prefabTempDirectory))
{
Directory.CreateDirectory(prefabTempDirectory);
}
var generatedAssetPaths = new List <string>();
foreach (Feature feature in fm.FeatureMap.Values)
{
// Skip features that cannot be turned into prefabs.
if (!feature.IsPhysical || feature.Metadata == null)
{
continue;
}
var prefab = new GameObject(feature.Name);
var metadata = prefab.AddComponent <ElementMetadata>();
metadata.Init(feature);
// Attach 3D model.
string[] modelFileGUIDs = AssetDatabase.FindAssets(metadata.ModelFilename, new[] { inputDirectory });
if (modelFileGUIDs.Length == 0)
{
Debug.Log($"Could not find 3D model with name: {metadata.ModelFilename}");
Object.DestroyImmediate(prefab);
errorCount++;
continue;
}
var modelAsset = AssetDatabase.LoadMainAssetAtPath(AssetDatabase.GUIDToAssetPath(modelFileGUIDs[0])) as GameObject;
if (modelAsset == null)
{
Debug.Log($"Model {metadata.ModelFilename} could not be loaded.");
Object.DestroyImmediate(prefab);
errorCount++;
continue;
}
var model = Object.Instantiate(modelAsset, prefab.transform, false);
if (model == null)
{
Debug.Log($"Model {metadata.ModelFilename} could not be instantiated.");
Object.DestroyImmediate(prefab);
errorCount++;
continue;
}
model.name = "3D Model";
// Generate a collider mesh.
var submeshes = model.GetComponentsInChildren <MeshFilter>();
var combine = new CombineInstance[submeshes.Length];
for (int i = 0; i < submeshes.Length; i++)
{
combine[i].mesh = submeshes[i].sharedMesh;
combine[i].transform = submeshes[i].transform.localToWorldMatrix;
}
var combinedMesh = new Mesh();
combinedMesh.CombineMeshes(combine);
prefab.AddComponent <ElementController>().SaveColliderMesh(combinedMesh);
// Set AssetBundle label and save the prefab.
bool saveSuccess;
string prefabAssetPath = AssetDatabase.GenerateUniqueAssetPath($"{prefabTempDirectory}/{prefab.name}.prefab");
GameObject prefabAsset = PrefabUtility.SaveAsPrefabAsset(prefab, prefabAssetPath, out saveSuccess);
if (prefabAsset == null || !saveSuccess)
{
Debug.Log($"Prefab {prefab.name} could not be saved as prefab asset.");
Object.DestroyImmediate(prefab);
errorCount++;
continue;
}
AssetImporter.GetAtPath(prefabAssetPath).SetAssetBundleNameAndVariant(bundleName, "");
generatedAssetPaths.Add(prefabAssetPath);
Object.DestroyImmediate(prefab);
}
// Mark linked textures to be put into the bundle.
foreach (Feature feature in fm.FeatureMap.Values)
{
if (!feature.IsMaterial || feature.Material == null)
{
continue;
}
var textureFileGUIDs = AssetDatabase.FindAssets(feature.Material.TextureFilename, new[] { inputDirectory });
if (textureFileGUIDs.Length == 0)
{
Debug.Log($"Could not find texture with name: {feature.Material.TextureFilename}");
errorCount++;
continue;
}
var assetPath = AssetDatabase.GUIDToAssetPath(textureFileGUIDs[0]);
AssetImporter.GetAtPath(assetPath).SetAssetBundleNameAndVariant(bundleName, "");
}
// Save the feature model as JSON asset.
var featureModelJson = new TextAsset(jsonAssets[0].text);
var featureModelSavePath = $"{prefabTempDirectory}/featuremodel.asset";
AssetDatabase.CreateAsset(featureModelJson, featureModelSavePath);
AssetImporter.GetAtPath(featureModelSavePath).SetAssetBundleNameAndVariant(bundleName, "");
generatedAssetPaths.Add(featureModelSavePath);
// If only prefabs were requested, we are done.
if (assetsOnly)
{
return;
}
// Build the bundle.
if (!Directory.Exists(bundleOutputDirectory))
{
Directory.CreateDirectory(bundleOutputDirectory);
}
BuildPipeline.BuildAssetBundles(bundleOutputDirectory, BuildAssetBundleOptions.None, BuildTarget.Android);
// AssetBundle is now saved. Delete the generated content.
foreach (string path in generatedAssetPaths)
{
bool deleteSuccess = AssetDatabase.DeleteAsset(path);
if (!deleteSuccess)
{
Debug.Log($"Failed to delete generated prefab asset at: {path}");
errorCount++;
}
}
Directory.Delete(prefabTempDirectory, true);
AssetDatabase.Refresh();
if (errorCount > 0)
{
EditorUtility.DisplayDialog("Import Errors",
(errorCount == 1 ? "There was an error" : $"There were {errorCount} errors") + " during import." +
"\nSee console log for more information.",
"Close");
}
else
{
EditorUtility.DisplayDialog("Import Complete",
"Database was imported with no errors." +
$"\nResults were saved to {bundleOutputDirectory}/{bundleName}",
"Close");
}
}
public void Init(string featureModelJson)
{
Model = FeatureModel.FromJson(featureModelJson);
}