#region Copyright & License Information
/*
 * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation. For more information,
 * see COPYING.
 */
#endregion

using System;
using Eluant;
using OpenRA.Activities;
using OpenRA.Scripting;
using OpenRA.Traits;

namespace OpenRA.Mods.Common.Activities
{
	public sealed class CallLuaFunc : Activity, IDisposable
	{
		readonly ScriptContext context;
		LuaFunction function;

		public CallLuaFunc(LuaFunction function, ScriptContext context)
		{
			this.function = (LuaFunction)function.CopyReference();
			this.context = context;
		}

		public override Activity Tick(Actor self)
		{
			try
			{
				if (function != null)
					function.Call().Dispose();
			}
			catch (Exception ex)
			{
				context.FatalError(ex.Message);
			}

			Dispose();
			return NextActivity;
		}

		public override void Cancel(Actor self)
		{
			Dispose();
			base.Cancel(self);
		}

		public void Dispose()
		{
			if (function == null)
				return;

			function.Dispose();
			function = null;
		}
	}
}
