rubidium@9820: /* $Id$ */
rubidium@9820: 
truebrain@9833: /** @file ai_event.cpp Implementation of AIEvent. */
rubidium@9820: 
truelight@9682: #include "ai_event.hpp"
truelight@9682: /* TODO -- This include has to go */
truelight@9682: #include "ai_event_types.hpp"
truelight@9682: 
truelight@9682: #include <queue>
truelight@9682: #include <set>
truelight@9682: 
truelight@9682: struct AIEventData {
truelight@9682: 	std::queue<AIEvent *> stack;
truelight@9682: 	std::set<AIEvent::AIEventType> events;
truelight@9682: 	bool events_disabled;
truelight@9682: 
truelight@9682: 	AIEventData() :
truelight@9682: 		events_disabled(false)
truelight@9682: 	{}
truelight@9682: };
truelight@9682: 
truelight@9682: /* static */ void AIEventController::CreateEventPointer()
truelight@9682: {
truelight@9682: 	assert(AIObject::GetEventPointer() == NULL);
truelight@9682: 
truelight@9682: 	AIObject::GetEventPointer() = new AIEventData();
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::FreeEventPointer()
truelight@9682: {
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	/* Free up the event-list */
truelight@9682: 	data->events.clear();
truelight@9682: 
truelight@9682: 	/* Free all waiting events (if any) */
truelight@9682: 	while (!data->stack.empty()) {
truelight@9682: 		AIEvent *e = data->stack.front();
truelight@9682: 		data->stack.pop();
truelight@9682: 		delete e;
truelight@9682: 	}
truelight@9682: 
truelight@9682: 	/* Now kill our data pointer */
truelight@9682: 	delete data;
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ bool AIEventController::IsEventWaiting()
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	return !data->stack.empty();
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ AIEvent *AIEventController::GetNextEvent()
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	if (data->stack.empty()) return NULL;
truelight@9682: 
truelight@9682: 	AIEvent *e = data->stack.front();
truelight@9682: 	data->stack.pop();
truelight@9682: 	return e;
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::DisableEvent(AIEvent::AIEventType event)
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	if (data->events_disabled) data->events.erase(event);
truelight@9682: 	else data->events.insert(event);
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::EnableEvent(AIEvent::AIEventType event)
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	if (!data->events_disabled) data->events.erase(event);
truelight@9682: 	else data->events.insert(event);
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::DisableAllEvents()
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	data->events_disabled = true;
truelight@9682: 	data->events.clear();
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::EnableAllEvents()
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	data->events_disabled = false;
truelight@9682: 	data->events.clear();
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::InsertEvent(AIEvent *event)
truelight@9682: {
truelight@9682: 	if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
truelight@9682: 	AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
truelight@9682: 
truelight@9682: 	/* If events_disabled is true, the list shows only the enabled events.
truelight@9682: 	 *  If events_disabled is false, the list shows only the disabled events. */
truelight@9682: 	if (data->events_disabled  && data->events.count(event->GetEventType()) == 0) return;
truelight@9682: 	if (!data->events_disabled && data->events.count(event->GetEventType()) != 0) return;
truelight@9682: 
truelight@9682: 	data->stack.push(event);
truelight@9682: }
truelight@9682: 
truelight@9682: /* static */ void AIEventController::Test()
truelight@9682: {
truelight@9682: 	AIEventController::InsertEvent(new AIEventTest(42));
truelight@9682: }