Proper registration for this type?

Adam Brown · 2009-02-10T21:13:36

I have a type I want to register that I want to be used as such: - I should be able to pass an application instance of it to a script, and I want the script to be able to directly modify the application's instance. - I also don't want the object to be controlled by the scripts GC or reference counting. The life time of the object should be completely controlled by the application, and the script should not hold references to it. Now I've tried to register it as both of these: r = m_engine->RegisterObjectType("Creep", sizeof(Creep), asOBJ_VALUE | asOBJ_APP_CLASS | asOBJ_APP_CLASS_CONSTRUCTOR | asOBJ_APP_CLASS_DESTRUCTOR ); assert( r >= 0 ); r = m_engine->RegisterObjectType("Creep", sizeof(Creep), asOBJ_VALUE | asOBJ_POD | asOBJ_APP_CLASS ); assert( r >= 0 ); The first isn't ideal, because I don't really want to be able to construct or destruct these objects in scripts. On this note, if I only have a non-default constructor, how do I pass arguments to it via the method described here: void Constructor(void *memory) { // Initialize the pre-allocated memory by calling the // object constructor with the placement-new operator new(memory) Object(); } void Destructor(void *memory) { // Uninitialize the memory by calling the object destructor ((Object*)memory)->~Object(); } // Register the behaviours r = engine->RegisterObjectBehaviour("val", asBEHAVE_CONSTRUCT, "void f()", asFUNCTION(Constructor), asCALL_CDECL_OBJLAST); assert( r >= 0 ); r = engine->RegisterObjectBehaviour("val", asBEHAVE_DESTRUCT, "void f()", asFUNCTION(Destructor), asCALL_CDECL_OBJLAST); assert( r >= 0 ); Anyway, with both of these methods, I manage to run and even compile the script, but when I attempt to use it here, things go bad: // The Script: void fire( Creep@ c ) { int h = c.health(); c.health( h - 5 ); print( "The creeps health is now: " ); print( c.health() ); print( "\n" ); } // The point of call: asIScriptContext* ctx = gScriptEngine.prepare( description->script, "void fire( Creep@ )" ); ctx->SetArgObject( 0, &c ); gScriptEngine.execute( ctx ); If I'm not mistaken, the @ symbol is what I want for passing things as references right? Now it prints "The creeps health is now: 5" which is perfect, but then I get a random crash in the next few lines of code. It changes what line each time I run. Clearly, the memory for the object has been corrupted. Any ideas?

AngelCode Affiliates

Started by Wavesonics January 16, 2009 03:55 AM

9 comments, last by Wavesonics 15 years, 9 months ago

Wavesonics

Author

330

February 10, 2009 09:13 PM

Hey Sly,

I have been evaluating AngelScript for our next project on the Wii, however we are just now in the midst of our ship crunch for our current project so I haven't had time to try things out on the Wii yet for this.

If you do however, I would be greatly interested in any progress!

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Proper registration for this type?

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Proper registration for this type?

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