clockwerk-opensim-stable – Rev 1
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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
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* 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 OpenSimulator 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
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using System;
using System.Text;
using System.Xml;
using System.IO;
using System.Xml.Serialization;
namespace OpenSim.Region.Framework.Scenes
{
/// <summary>
/// A new version of the old Channel class, simplified
/// </summary>
public class TerrainChannel : ITerrainChannel
{
private readonly bool[,] taint;
private double[,] map;
public TerrainChannel()
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
PinHeadIsland();
}
public TerrainChannel(String type)
{
map = new double[Constants.RegionSize, Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16, Constants.RegionSize / 16];
if (type.Equals("flat"))
FlatLand();
else
PinHeadIsland();
}
public TerrainChannel(double[,] import)
{
map = import;
taint = new bool[import.GetLength(0),import.GetLength(1)];
}
public TerrainChannel(bool createMap)
{
if (createMap)
{
map = new double[Constants.RegionSize,Constants.RegionSize];
taint = new bool[Constants.RegionSize / 16,Constants.RegionSize / 16];
}
}
public TerrainChannel(int w, int h)
{
map = new double[w,h];
taint = new bool[w / 16,h / 16];
}
#region ITerrainChannel Members
public int Width
{
get { return map.GetLength(0); }
}
public int Height
{
get { return map.GetLength(1); }
}
public ITerrainChannel MakeCopy()
{
TerrainChannel copy = new TerrainChannel(false);
copy.map = (double[,]) map.Clone();
return copy;
}
public float[] GetFloatsSerialised()
{
// Move the member variables into local variables, calling
// member variables 256*256 times gets expensive
int w = Width;
int h = Height;
float[] heights = new float[w * h];
int i, j; // map coordinates
int idx = 0; // index into serialized array
for (i = 0; i < h; i++)
{
for (j = 0; j < w; j++)
{
heights[idx++] = (float)map[j, i];
}
}
return heights;
}
public double[,] GetDoubles()
{
return map;
}
public double this[int x, int y]
{
get { return map[x, y]; }
set
{
// Will "fix" terrain hole problems. Although not fantastically.
if (Double.IsNaN(value) || Double.IsInfinity(value))
return;
if (map[x, y] != value)
{
taint[x / 16, y / 16] = true;
map[x, y] = value;
}
}
}
public bool Tainted(int x, int y)
{
if (taint[x / 16, y / 16])
{
taint[x / 16, y / 16] = false;
return true;
}
return false;
}
#endregion
public TerrainChannel Copy()
{
TerrainChannel copy = new TerrainChannel(false);
copy.map = (double[,]) map.Clone();
return copy;
}
public string SaveToXmlString()
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Util.UTF8;
using (StringWriter sw = new StringWriter())
{
using (XmlWriter writer = XmlWriter.Create(sw, settings))
{
WriteXml(writer);
}
string output = sw.ToString();
return output;
}
}
private void WriteXml(XmlWriter writer)
{
writer.WriteStartElement(String.Empty, "TerrainMap", String.Empty);
ToXml(writer);
writer.WriteEndElement();
}
public void LoadFromXmlString(string data)
{
StringReader sr = new StringReader(data);
XmlTextReader reader = new XmlTextReader(sr);
reader.Read();
ReadXml(reader);
reader.Close();
sr.Close();
}
private void ReadXml(XmlReader reader)
{
reader.ReadStartElement("TerrainMap");
FromXml(reader);
}
private void ToXml(XmlWriter xmlWriter)
{
float[] mapData = GetFloatsSerialised();
byte[] buffer = new byte[mapData.Length * 4];
for (int i = 0; i < mapData.Length; i++)
{
byte[] value = BitConverter.GetBytes(mapData[i]);
Array.Copy(value, 0, buffer, (i * 4), 4);
}
XmlSerializer serializer = new XmlSerializer(typeof(byte[]));
serializer.Serialize(xmlWriter, buffer);
}
private void FromXml(XmlReader xmlReader)
{
XmlSerializer serializer = new XmlSerializer(typeof(byte[]));
byte[] dataArray = (byte[])serializer.Deserialize(xmlReader);
int index = 0;
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
float value;
value = BitConverter.ToSingle(dataArray, index);
index += 4;
this[x, y] = (double)value;
}
}
}
private void PinHeadIsland()
{
int x;
for (x = 0; x < Constants.RegionSize; x++)
{
int y;
for (y = 0; y < Constants.RegionSize; y++)
{
map[x, y] = TerrainUtil.PerlinNoise2D(x, y, 2, 0.125) * 10;
double spherFacA = TerrainUtil.SphericalFactor(x, y, Constants.RegionSize / 2.0, Constants.RegionSize / 2.0, 50) * 0.01;
double spherFacB = TerrainUtil.SphericalFactor(x, y, Constants.RegionSize / 2.0, Constants.RegionSize / 2.0, 100) * 0.001;
if (map[x, y] < spherFacA)
map[x, y] = spherFacA;
if (map[x, y] < spherFacB)
map[x, y] = spherFacB;
}
}
}
private void FlatLand()
{
int x;
for (x = 0; x < Constants.RegionSize; x++)
{
int y;
for (y = 0; y < Constants.RegionSize; y++)
map[x, y] = 21;
}
}
}
}