Plugin Development

EditorCore can be extended through plugins, plugins can add three different kinds of functionality:

• A Game Module allows to edit the levels for a game, it includes all the logic to handle its file formats
• A FileHandler allows to open file formats that aren't levels, such as archives or textures, it can be called by other plugins as well.
• A MenuExtension adds buttons to the various menus in the application with custom logic, these can't be called by other extensions.

A dll can include an unlimited number of extensions but the editor can use a single Game module per instance. There is no limit for other kinds of extensions.

Creating a new extension project

With visual studio create a new classes library (.net dll) you might want to call the project "*something*Ext" because the final dll name must end with "Ext.dll" this way the editor can quickly load only its extensions.
Once you created the project add a reference to EditorCoreCommon.dll and create a new extension manifest:

using EditorCore.Interfaces;
...
class MyExtension: ExtensionManifest
{
	public string ModuleName => "MyExtension";
	public string Author => "";
	public string ExtraText => null;

	public IMenuExtension MenuExt => null

	public bool HasGameModule => false;
	public IGameModule GetNewGameModule() => null;
	public IFileHander[] Handlers => null;

	public void CheckForUpdates()
	{
		return;
	}
}

The manifest doesn't need to be public as it will be loaded through reflection. You can include multiple manifests but it's not recommended.
Each property must return a new class :

public IFileHander[] Handlers => new IFileHander[] { new BymlFileHandler() };
public IMenuExtension MenuExt => new MyMenuExtension();

this is because controls can't be shared among multiple forms.