#include "AdeptHeaders.hpp"
#include "State.hpp"

//#############################################################################
//###########################    StateEngine    ###############################
//#############################################################################

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
	StateEngine__FactoryRequest::ConstructFactoryRequest(Script *script)
{
	Check_Pointer(this);
	Check_Object(script);

	//
	//----------------------------------
	// Point into the notation file page
	//----------------------------------
	//
	Page *page = script->instancePage;
	Check_Object(page);
	const char* engine_name = script->stateEngineName;
	Check_Pointer(engine_name);

	//
	//-------------------------------------------------------------------------
	// Find the initial state and look it up in the engine's class data.  If it
	// doesn't exist, we got an error
	//-------------------------------------------------------------------------
	//
	const char* state;
	page->GetEntry(engine_name, &state, true);
	StateEngine::ClassData *class_data = script->engineClass;
	Check_Object(class_data);
	const StateEngine::StateEntry *entry = class_data->FindStateEntry(state);
	if (!entry)
	{
		STOP((
			"%s: {[%s]%s=%s}: Unknown state!",
			page->GetNotationFile()->GetFileName(),
			page->GetName(),
			engine_name,
			state
		));
	}

	//
	//-------------------------------------------------------------------------
	// Stuff the state number into both old and current state, then look to see
	// if a different old state is required
	//-------------------------------------------------------------------------
	//
	Check_Object(entry);
	currentState = entry->stateNumber;
	Verify(static_cast<unsigned>(currentState) < class_data->GetStateCount());
}