/* * 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 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 * 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 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; } } } }