Hello! I recently started a small game project and decided to take a look at AngelScript to implement a simple in-game console and later maybe also scripting-support. The first I want to do is exposing my Lightsource class to the script engine. My class has several methods like this:

class Light
{
    SetDiffuse(const Color &color);
}

which would be used like this in C++:

  light0.SetDiffuse(Color(1.0f, 0, 0));

From what I figured out, the best way to make this usable in Angelscript is to register my Color class as a value type in AngelScript, so what I did is this:

	static void DefineScriptInterface(asIScriptEngine* engine)
	{
	    int error = 0;
		
	    //register class name
	    error = engine->RegisterObjectType("Color", sizeof(Color), asOBJ_VALUE 
														| asOBJ_POD 
														| asOBJ_APP_CLASS_ASSIGNMENT
												| asOBJ_APP_CLASS_CONSTRUCTOR
																	);
			assert(error >= 0);
			
			//register data members
			error = engine->RegisterObjectProperty("Color", "float r", offsetof(Color, r));
			assert(error >= 0);
			
			error = engine->RegisterObjectProperty("Color", "float g", offsetof(Color, g));
			assert(error >= 0);

			error = engine->RegisterObjectProperty("Color", "float b", offsetof(Color, b));
			assert(error >= 0);

			error = engine->RegisterObjectBehaviour("Color", asBEHAVE_CONSTRUCT, "void f(float r, float g, float b)",
asFUNCTION(&Color::ScriptConstructor), asCALL_CDECL);
			assert(error >= 0);
			
			
		
		}

		static void ScriptConstructor(void *memory, float r, float g, float b)
		{
			//placement-new and explicit initialisation
			new (memory) Color(r, g, b);
		}

My problem is, that I'm not quite able to figure out how to expose the non-default constructor to the script engine, everything I've tried results in an asNOT_SUPPORTED error :( . Your help would be appreciated... Greetings Martin Edit: sorry, can't get my code formated right here

Just a tiny change:

error = engine->RegisterObjectBehaviour("Color", asBEHAVE_CONSTRUCT, "void f(float r, float g, float b)",asFUNCTION(&Color::ScriptConstructor), asCALL_CDECL_OBJFIRST);

asCALL_CDECL_OBJFIRST tells AngelScript that the global function should work as a class method, where the object pointer is passed as the first parameter.

Regards,
Andreas