Compiling C# at Runtime

Question

I want to implement C# as the scripting language in my game.

My problem is, that my script will not compile if I want to use classes defined in the game core (exe).

The script looks like this:

using System; using ConsoleApplication1; class Script { private static void Call() { Console.WriteLine("called"); } public static void Init() { Console.WriteLine("Script"); Call(); GameObject myO; // THIS IS WHAT I WANT TO GET WORKED, //IF THIS IS COMMENTED OUT, IT COMPILES FINE, GAMEOBJECT // IS DEFINED IN THE "ConsoleApplication1" NAMESPACE. } }

The script is compiled like in the MDX sample:

 static void Main(string[] args) { CodeDomProvider provider = new CSharpCodeProvider(); CompilerParameters cp = new CompilerParameters(); //cp.CompilerOptions = "/target:library"; cp.GenerateExecutable = false; cp.GenerateInMemory = true; cp.IncludeDebugInformation = false; cp.ReferencedAssemblies.Add("ConsoleApplication2.exe"); cp.ReferencedAssemblies.Add("System.dll"); CompilerResults cr = provider.CompileAssemblyFromFile(cp, "script.cs"); if (!cr.Errors.HasErrors) { Console.WriteLine("Success"); cr.CompiledAssembly.GetType("Script").GetMethod("Init").Invoke(null, null); } Console.ReadLine(); }

Is there any way to call functions or create objects defined in the "ConsoleApplication1" namespace via the script?

Did I miss the part where you state what compile time error you encounter? — Tipx
– Tipx, Commented May 13, 2011 at 17:47
Oh I´m so dumb... checked compiler error[0] and now it works, thanks — Blaxx
– Blaxx, Commented May 13, 2011 at 18:00
Is 'ConsoleApplication1.GameObject' defined in 'ConsoleApplication2.exe'? — Jan-Peter Vos
– Jan-Peter Vos, Commented May 13, 2011 at 18:01

Rick Sladkey · Accepted Answer · 2011-05-13 18:03:58Z

This is a daily programming problem. It's not working and you think it should be working. So break it down. Instead of working on a big problem, work on a smaller problem. Just tackle trying to compile the script outside of your program. Once you get that working, then you can try to compile it as a script from inside your program, knowing that you've got the basic problem of references and compiler issues sorted out.

Something like:

csc /reference:ConsoleApplication1.exe script.cs

From the looks of it, it might be as simple as changing the reference from ConsoleApplication2.exe to ConsoleApplication1.exe.

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