D:/guillaume/guillara/3D/DXGfx/Backup/DXGfxLib/TimeLine.cs

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//BSD License  
//DXGfx® - http://www.eteractions.com
//Copyright (c) 2005
//by Guillaume Randon
//Permission is hereby granted, free of charge, to any person obtaining a copy of this software
//and associated documentation files (the "Software"), to deal in the Software without restriction,
//including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
//and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
//subject to the following conditions:
//The above copyright notice and this permission notice shall be included in all copies or substantial
//portions of the Software.
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE 
//AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Text;

namespace DXGfxLib
{
    public class TimeLine
    {
        public List<Event> events = null;

        private double startTime = 0;

        private double lastEvaluation = 0;

        int lastEventFiredIndex = 0;

        private SceneObject parent = null;

        private Scene scene = null;

        public TimeLine()
        {
            events = new List<Event>();
        }

        public void Clear()
        {
            events.Clear();
        }

        public void SetParent(SceneObject parent)
        {
            this.parent = parent;
        }

        public void SetScene(Scene scene)
        {
            this.scene = scene;
        }

        public virtual void Evaluate(double appTime, float elapsedTime)
        {
            if (startTime == 0)
            {
                startTime = appTime;
                events.Sort();
            }

            for (int i = lastEventFiredIndex; i < events.Count; i++)
            {
                if (events[i].timeOffset < (appTime - startTime))
                {
                    if (parent != null)
                    {
                        parent.AddEvent(events[i]);
                    }
                    else if (scene != null)
                    {
                        scene.AddEvent(events[i]);
                    }
                    else
                    {
                        throw new Exception("No parent and no scene this is wrong !! Event can not be fired!");
                    }
                }
                else
                {
                    break;
                }
            }

            lastEvaluation = appTime;
        }

        public void Reset()
        {
            foreach (Event evt in events)
            {
                evt.Reset();
            }
            startTime = 0;
            lastEvaluation = 0;
            lastEventFiredIndex = 0;
        }
    }
}

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