* Terrain filters! - Think photoshop-style filters for terrain.

* Terrain filters may be written in either C# or JavaScript and loaded at runtime
Use:
terrain csfilter somefile.cs -- Loads a C# filter
terrain jsfilter somefile.js -- Loads a JavaScript filter
Once a terrain filter has been loaded, you can use the command as normal, eg
terrain demofilter

3 files changed, 148 insertions, 19 deletions

diff --git a/OpenSim/OpenSim.Terrain.BasicTerrain/OpenSim.Terrain.BasicTerrain.csproj b/OpenSim/OpenSim.Terrain.BasicTerrain/OpenSim.Terrain.BasicTerrain.csproj
index 694521b..419880e 100644
--- a/OpenSim/OpenSim.Terrain.BasicTerrain/OpenSim.Terrain.BasicTerrain.csproj
+++ b/OpenSim/OpenSim.Terrain.BasicTerrain/OpenSim.Terrain.BasicTerrain.csproj
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

   <PropertyGroup>

     <ProjectType>Local</ProjectType>

     <ProductVersion>8.0.50727</ProductVersion>

@@ -6,7 +6,8 @@
     <ProjectGuid>{2270B8FE-0000-0000-0000-000000000000}</ProjectGuid>

     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

-    <ApplicationIcon></ApplicationIcon>

+    <ApplicationIcon>

+    </ApplicationIcon>

     <AssemblyKeyContainerName>

     </AssemblyKeyContainerName>

     <AssemblyName>OpenSim.Terrain.BasicTerrain</AssemblyName>

@@ -15,9 +16,11 @@
     <DefaultTargetSchema>IE50</DefaultTargetSchema>

     <DelaySign>false</DelaySign>

     <OutputType>Library</OutputType>

-    <AppDesignerFolder></AppDesignerFolder>

+    <AppDesignerFolder>

+    </AppDesignerFolder>

     <RootNamespace>OpenSim.Terrain.BasicTerrain</RootNamespace>

-    <StartupObject></StartupObject>

+    <StartupObject>

+    </StartupObject>

     <FileUpgradeFlags>

     </FileUpgradeFlags>

   </PropertyGroup>

@@ -28,7 +31,8 @@
     <ConfigurationOverrideFile>

     </ConfigurationOverrideFile>

     <DefineConstants>TRACE;DEBUG</DefineConstants>

-    <DocumentationFile></DocumentationFile>

+    <DocumentationFile>

+    </DocumentationFile>

     <DebugSymbols>True</DebugSymbols>

     <FileAlignment>4096</FileAlignment>

     <Optimize>False</Optimize>

@@ -37,7 +41,8 @@
     <RemoveIntegerChecks>False</RemoveIntegerChecks>

     <TreatWarningsAsErrors>False</TreatWarningsAsErrors>

     <WarningLevel>4</WarningLevel>

-    <NoWarn></NoWarn>

+    <NoWarn>

+    </NoWarn>

   </PropertyGroup>

   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

     <AllowUnsafeBlocks>False</AllowUnsafeBlocks>

@@ -46,7 +51,8 @@
     <ConfigurationOverrideFile>

     </ConfigurationOverrideFile>

     <DefineConstants>TRACE</DefineConstants>

-    <DocumentationFile></DocumentationFile>

+    <DocumentationFile>

+    </DocumentationFile>

     <DebugSymbols>False</DebugSymbols>

     <FileAlignment>4096</FileAlignment>

     <Optimize>True</Optimize>

@@ -55,30 +61,32 @@
     <RemoveIntegerChecks>False</RemoveIntegerChecks>

     <TreatWarningsAsErrors>False</TreatWarningsAsErrors>

     <WarningLevel>4</WarningLevel>

-    <NoWarn></NoWarn>

+    <NoWarn>

+    </NoWarn>

   </PropertyGroup>

   <ItemGroup>

-    <Reference Include="libTerrain-BSD.dll" >

+    <Reference Include="libTerrain-BSD.dll">

       <HintPath>..\..\bin\libTerrain-BSD.dll</HintPath>

       <Private>False</Private>

     </Reference>

-    <Reference Include="openjpegnet.dll" >

+    <Reference Include="Microsoft.JScript" />

+    <Reference Include="openjpegnet.dll">

       <HintPath>..\..\bin\openjpegnet.dll</HintPath>

       <Private>False</Private>

     </Reference>

-    <Reference Include="System" >

+    <Reference Include="System">

       <HintPath>System.dll</HintPath>

       <Private>False</Private>

     </Reference>

-    <Reference Include="System.Data" >

+    <Reference Include="System.Data">

       <HintPath>System.Data.dll</HintPath>

       <Private>False</Private>

     </Reference>

-    <Reference Include="System.Drawing" >

+    <Reference Include="System.Drawing">

       <HintPath>System.Drawing.dll</HintPath>

       <Private>False</Private>

     </Reference>

-    <Reference Include="System.Xml" >

+    <Reference Include="System.Xml">

       <HintPath>System.Xml.dll</HintPath>

       <Private>False</Private>

     </Reference>

@@ -92,6 +100,7 @@
     <Compile Include="Properties\AssemblyInfo.cs">

       <SubType>Code</SubType>

     </Compile>

+    <Compile Include="TerrainFilter.cs" />

   </ItemGroup>

   <Import Project="$(MSBuildBinPath)\Microsoft.CSHARP.Targets" />

   <PropertyGroup>

@@ -100,4 +109,4 @@
     <PostBuildEvent>

     </PostBuildEvent>

   </PropertyGroup>

-</Project>

+</Project>
\ No newline at end of file
diff --git a/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs b/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
index d1d54ad..2bda5ba 100644
--- a/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
+++ b/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
@@ -48,6 +48,11 @@ namespace OpenSim.Terrain
     public class TerrainEngine

     {

         /// <summary>

+        /// Plugin library for scripts

+        /// </summary>

+        public FilterHost customFilters = new FilterHost();

+

+        /// <summary>

         /// A [normally] 256x256 heightmap

         /// </summary>

         public Channel heightmap;

@@ -193,8 +198,10 @@ namespace OpenSim.Terrain
                         resultText += "terrain erode aerobic <windspeed> <pickupmin> <dropmin> <carry> <rounds> <lowest>\n";

                         resultText += "terrain erode thermal <talus> <rounds> <carry>\n";

                         resultText += "terrain multiply <val> - multiplies a terrain by <val>\n";

-                        resultText += "terrain revert - reverts the terrain to the stored original";

-                        resultText += "terrain bake - saves the current terrain into the revert map";

+                        resultText += "terrain revert - reverts the terrain to the stored original\n";

+                        resultText += "terrain bake - saves the current terrain into the revert map\n";

+                        resultText += "terrain csfilter <filename.cs> - loads a new filter from the specified .cs file\n";

+                        resultText += "terrain jsfilter <filename.js> - loads a new filter from the specified .js file\n";

                         return false;

 

                     case "revert":

@@ -285,9 +292,25 @@ namespace OpenSim.Terrain
                         }

                         break;

 

+                    case "csfilter":

+                        customFilters.LoadFilterCSharp(args[1]);

+                        break;

+                    case "jsfilter":

+                        customFilters.LoadFilterJScript(args[1]);

+                        break;

+

                     default:

-                        resultText = "Unknown terrain command";

-                        return false;

+                        // Run any custom registered filters

+                        if (customFilters.filters.ContainsKey(command))

+                        {

+                            customFilters.filters[command].Filter(heightmap, args);

+                            break;

+                        }

+                        else

+                        {

+                            resultText = "Unknown terrain command";

+                            return false;

+                        }

                 }

                 return true;

             }

diff --git a/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainFilter.cs b/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainFilter.cs
new file mode 100644
index 0000000..6a83c8a
--- /dev/null
+++ b/OpenSim/OpenSim.Terrain.BasicTerrain/TerrainFilter.cs
@@ -0,0 +1,97 @@
+using System;

+using System.Collections.Generic;

+using System.Text;

+

+using System.CodeDom.Compiler;

+using System.CodeDom;

+using Microsoft.CSharp;

+using Microsoft.JScript;

+

+using libTerrain;

+

+namespace OpenSim.Terrain

+{

+    public interface ITerrainFilter

+    {

+        void Filter(Channel heightmap, string[] args);

+        string Register();

+    }

+

+    public class TestFilter : ITerrainFilter

+    {

+        public void Filter(Channel heightmap, string[] args)

+        {

+            Console.WriteLine("Hello world");

+        }

+

+        public string Register()

+        {

+            return "demofilter";

+        }

+    }

+

+    public class FilterHost

+    {

+        public Dictionary<string, ITerrainFilter> filters = new Dictionary<string, ITerrainFilter>();

+

+        private void LoadFilter(ICodeCompiler compiler, string filename)

+        {

+            CompilerParameters compilerParams = new CompilerParameters();

+            CompilerResults compilerResults;

+            compilerParams.GenerateExecutable = false;

+            compilerParams.GenerateInMemory = true;

+            compilerParams.IncludeDebugInformation = false;

+            compilerParams.ReferencedAssemblies.Add("libTerrain-BSD.dll");

+            compilerParams.ReferencedAssemblies.Add("OpenSim.Terrain.BasicTerrain.dll");

+            compilerParams.ReferencedAssemblies.Add("System.dll");

+

+            compilerResults = compiler.CompileAssemblyFromFile(compilerParams, filename);

+

+            if (compilerResults.Errors.Count > 0)

+            {

+                Console.WriteLine("Compile errors:");

+                foreach (CompilerError error in compilerResults.Errors)

+                {

+                    Console.WriteLine(error.Line.ToString() + ": " + error.ErrorText.ToString());

+                }

+            }

+            else

+            {

+                foreach (Type pluginType in compilerResults.CompiledAssembly.GetExportedTypes())

+                {

+                    Type testInterface = pluginType.GetInterface("ITerrainFilter",true);

+

+                    if (testInterface != null)

+                    {

+                        ITerrainFilter filter = (ITerrainFilter)compilerResults.CompiledAssembly.CreateInstance(pluginType.ToString());

+

+                        string filterName = filter.Register();

+                        Console.WriteLine("Plugin: " + filterName + " loaded.");

+

+                        if (!filters.ContainsKey(filterName))

+                        {

+                            filters.Add(filterName, filter);

+                        }

+                        else

+                        {

+                            filters[filterName] = filter;

+                        }

+                    }

+                }

+            }

+

+        }

+

+        public void LoadFilterCSharp(string filename)

+        {

+            CSharpCodeProvider compiler = new CSharpCodeProvider();

+            LoadFilter(compiler.CreateCompiler(), filename);

+        }

+

+        public void LoadFilterJScript(string filename)

+        {

+            JScriptCodeProvider compiler = new JScriptCodeProvider();

+            LoadFilter(compiler.CreateCompiler(), filename);

+        }

+    }

+}