GameArea.cs :  » Game » SDL » SdlDotNetExamples » Triad » C# / CSharp Open Source

#region LICENSE
//*****************************************************************************
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the GNU General Public License
//  as published by the Free Software Foundation; either version 2
//  of the License, or (at your option) any later version.
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//  
//  Created by Michael Rosario
//  July 29th,2003
//  Contact me at mrosario@scrypt.net  
//*****************************************************************************
#endregion LICENSE

using System;
using System.Collections.ObjectModel;
using System.Collections.Generic;

using SdlDotNet.Core;
using SdlDotNet.Graphics;
using SdlDotNet.Input;

namespace SdlDotNetExamples.Triad{
    /// <summary>
    /// 
    /// </summary>
    public abstract class GameArea : GameObject
    {
        Collection<GameObject> objectList = new Collection<GameObject>();
        /// <summary>
        /// 
        /// </summary>
        public Collection<GameObject> GameObjectList
        {
            get
            {
                return objectList;
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="obj"></param>
        public void AddObject(GameObject obj)
        {
            if (obj == null)
            {
                throw new ArgumentNullException("obj");
            }
            objectList.Add(obj);
            obj.Parent = this;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="obj"></param>
        public void RemoveObject(GameObject obj)
        {
            objectList.Remove(obj);
        }

        /// <summary>
        /// 
        /// </summary>
        public override void Update()
        {
            foreach (GameObject obj in objectList)
            {
                obj.Update();
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="surface"></param>
        protected void DrawGameObjects(Surface surface)
        {
            foreach (GameObject obj in objectList)
            {
                obj.Draw(surface);
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="args"></param>
        public abstract void HandleSdlKeyDownEvent(KeyboardEventArgs args);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="args"></param>
        public abstract void HandleSdlKeyUpEvent(KeyboardEventArgs args);
    }
}