|
|
|
/* $Id$ */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This file is part of OpenTTD.
|
|
|
|
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
|
|
|
|
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/** @file ai_event.cpp Implementation of AIEvent. */
|
|
|
|
|
|
|
|
#include "ai_event_types.hpp"
|
|
|
|
|
|
|
|
#include <queue>
|
|
|
|
|
|
|
|
struct AIEventData {
|
|
|
|
std::queue<AIEvent *> stack;
|
|
|
|
};
|
|
|
|
|
|
|
|
/* static */ void AIEventController::CreateEventPointer()
|
|
|
|
{
|
|
|
|
assert(AIObject::GetEventPointer() == NULL);
|
|
|
|
|
|
|
|
AIObject::GetEventPointer() = new AIEventData();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* static */ void AIEventController::FreeEventPointer()
|
|
|
|
{
|
|
|
|
AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
|
|
|
|
|
|
|
|
/* Free all waiting events (if any) */
|
|
|
|
while (!data->stack.empty()) {
|
|
|
|
AIEvent *e = data->stack.front();
|
|
|
|
data->stack.pop();
|
|
|
|
e->Release();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now kill our data pointer */
|
|
|
|
delete data;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* static */ bool AIEventController::IsEventWaiting()
|
|
|
|
{
|
|
|
|
if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
|
|
|
|
AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
|
|
|
|
|
|
|
|
return !data->stack.empty();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* static */ AIEvent *AIEventController::GetNextEvent()
|
|
|
|
{
|
|
|
|
if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
|
|
|
|
AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
|
|
|
|
|
|
|
|
if (data->stack.empty()) return NULL;
|
|
|
|
|
|
|
|
AIEvent *e = data->stack.front();
|
|
|
|
data->stack.pop();
|
|
|
|
return e;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* static */ void AIEventController::InsertEvent(AIEvent *event)
|
|
|
|
{
|
|
|
|
if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
|
|
|
|
AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
|
|
|
|
|
|
|
|
event->AddRef();
|
|
|
|
data->stack.push(event);
|
|
|
|
}
|
|
|
|
|