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using System;
using System.Collections.Generic;
using OpenMetaverse;
namespace OpenSim.Region.CoreModules.World.Wind.Plugins
{
class SimpleRandomWind : Mono.Addins.TypeExtensionNode, IWindModelPlugin
{
private Vector2[] m_windSpeeds = new Vector2[16 * 16];
private float m_strength = 1.0f;
private Random m_rndnums = new Random(Environment.TickCount);
#region IPlugin Members
public string Version
{
get { return "1.0.0.0"; }
}
public string Name
{
get { return "SimpleRandomWind"; }
}
public void Initialise()
{
}
#endregion
#region IDisposable Members
public void Dispose()
{
m_windSpeeds = null;
}
#endregion
#region IWindModelPlugin Members
public void WindConfig(OpenSim.Region.Framework.Scenes.Scene scene, Nini.Config.IConfig windConfig)
{
if( windConfig != null )
{
if( windConfig.Contains("strength") )
{
m_strength = windConfig.GetFloat("strength", 1.0F);
}
}
}
public void WindUpdate(uint frame)
{
for (int y = 0; y < 16; y++)
{
for (int x = 0; x < 16; x++)
{
m_windSpeeds[y * 16 + x].X = (float)(m_rndnums.NextDouble() * 2d - 1d); // -1 to 1
m_windSpeeds[y * 16 + x].Y = (float)(m_rndnums.NextDouble() * 2d - 1d); // -1 to 1
m_windSpeeds[y * 16 + x].X *= m_strength;
m_windSpeeds[y * 16 + x].Y *= m_strength;
}
}
}
public Vector3 WindSpeed(float fX, float fY, float fZ)
{
Vector3 windVector = new Vector3(0.0f, 0.0f, 0.0f);
int x = (int)fX / 16;
int y = (int)fY / 16;
if (x < 0) x = 0;
if (x > 15) x = 15;
if (y < 0) y = 0;
if (y > 15) y = 15;
if (m_windSpeeds != null)
{
windVector.X = m_windSpeeds[y * 16 + x].X;
windVector.Y = m_windSpeeds[y * 16 + x].Y;
}
return windVector;
}
public Vector2[] WindLLClientArray()
{
return m_windSpeeds;
}
public string Description
{
get
{
return "Provides a simple wind model that creates random wind of a given strength in 16m x 16m patches.";
}
}
public System.Collections.Generic.Dictionary<string, string> WindParams()
{
Dictionary<string, string> Params = new Dictionary<string, string>();
Params.Add("strength", "wind strength");
return Params;
}
public void WindParamSet(string param, float value)
{
switch (param)
{
case "strength":
m_strength = value;
break;
}
}
public float WindParamGet(string param)
{
switch (param)
{
case "strength":
return m_strength;
default:
throw new Exception(String.Format("Unknown {0} parameter {1}", this.Name, param));
}
}
#endregion
}
}
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