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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using libsecondlife;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Scenes;
namespace OpenSim.Region.Environment.Modules.World.Sun
{
public class SunModule : IRegionModule
{
//private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
private const int m_default_frame = 100;
private const double m_real_day = 24.0;
private double m_day_length;
private int m_dilation;
private int m_frame;
private int m_frame_mod;
private Scene m_scene;
private long m_start;
#region IRegionModule Members
public void Initialise(Scene scene, IConfigSource config)
{
m_start = DateTime.Now.Ticks;
m_frame = 0;
// Just in case they don't have the stanzas
try
{
m_day_length = config.Configs["Sun"].GetDouble("day_length", m_real_day);
m_frame_mod = config.Configs["Sun"].GetInt("frame_rate", m_default_frame);
}
catch (Exception)
{
m_day_length = m_real_day;
m_frame_mod = m_default_frame;
}
m_dilation = (int) (m_real_day / m_day_length);
m_scene = scene;
scene.EventManager.OnFrame += SunUpdate;
scene.EventManager.OnNewClient += SunToClient;
}
public void PostInitialise()
{
}
public void Close()
{
}
public string Name
{
get { return "SunModule"; }
}
public bool IsSharedModule
{
get { return false; }
}
#endregion
public void SunToClient(IClientAPI client)
{
client.SendSunPos(SunPos(HourOfTheDay()), new LLVector3(0, 0.0f, 10.0f));
}
public void SunUpdate()
{
if (m_frame < m_frame_mod)
{
m_frame++;
return;
}
// m_log.InfoFormat("[SUN]: I've got an update {0} => {1}", m_scene.RegionsInfo.RegionName, HourOfTheDay());
List<ScenePresence> avatars = m_scene.GetAvatars();
foreach (ScenePresence avatar in avatars)
{
avatar.ControllingClient.SendSunPos(SunPos(HourOfTheDay()), new LLVector3(0, 0.0f, 10.0f));
}
// set estate settings for region access to sun position
m_scene.RegionInfo.EstateSettings.sunPosition = SunPos(HourOfTheDay());
m_frame = 0;
}
// Hour of the Day figures out the hour of the day as a float.
// The intent here is that we seed hour of the day with real
// time when the simulator starts, then run time forward
// faster based on time dilation factor. This means that
// ticks don't get out of hand
private double HourOfTheDay()
{
long m_addticks = (DateTime.Now.Ticks - m_start) * m_dilation;
DateTime dt = new DateTime(m_start + m_addticks);
return dt.Hour + (dt.Minute / 60.0);
}
private static LLVector3 SunPos(double hour)
{
// now we have our radian position
double rad = (hour / m_real_day) * 2 * Math.PI - (Math.PI / 2.0);
double z = Math.Sin(rad);
double x = Math.Cos(rad);
return new LLVector3((float) x, 0f, (float) z);
}
}
}
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