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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.IO;
using System.Text;
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.Environment.Modules.World.Terrain.FileLoaders
{
/// <summary>
/// Terragen File Format Loader
/// Built from specification at
/// http://www.planetside.co.uk/terragen/dev/tgterrain.html
/// </summary>
internal class Terragen : ITerrainLoader
{
#region ITerrainLoader Members
public ITerrainChannel LoadFile(string filename)
{
TerrainChannel retval = new TerrainChannel();
FileInfo file = new FileInfo(filename);
FileStream s = file.Open(FileMode.Open, FileAccess.Read);
BinaryReader bs = new BinaryReader(s);
bool eof = false;
if (ASCIIEncoding.ASCII.GetString(bs.ReadBytes(16)) == "TERRAGENTERRAIN ")
{
// Terragen file
while (eof == false)
{
int w = 256;
int h = 256;
string tmp = ASCIIEncoding.ASCII.GetString(bs.ReadBytes(4));
switch (tmp)
{
case "SIZE":
int sztmp = bs.ReadInt16() + 1;
w = sztmp;
h = sztmp;
bs.ReadInt16();
break;
case "XPTS":
w = bs.ReadInt16();
bs.ReadInt16();
break;
case "YPTS":
h = bs.ReadInt16();
bs.ReadInt16();
break;
case "ALTW":
eof = true;
Int16 heightScale = bs.ReadInt16();
Int16 baseHeight = bs.ReadInt16();
retval = new TerrainChannel(w, h);
int x, y;
for (x = 0; x < w; x++)
{
for (y = 0; y < h; y++)
{
retval[x, y] = (double) baseHeight + (double) bs.ReadInt16() * (double) heightScale / 65536.0;
}
}
break;
default:
bs.ReadInt32();
break;
}
}
}
bs.Close();
s.Close();
return retval;
}
public void SaveFile(string filename, ITerrainChannel map)
{
char[] header = "TERRAGENTERRAIN".ToCharArray();
throw new NotImplementedException();
}
public string FileExtension
{
get { return ".ter"; }
}
public ITerrainChannel LoadFile(string filename, int x, int y, int fileWidth, int fileHeight, int w, int h)
{
throw new NotImplementedException();
}
#endregion
public override string ToString()
{
return "Terragen";
}
}
}
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