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73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file script_event.cpp Implementation of AIEvent. */
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#include "../../stdafx.h"
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#include "script_event_types.hpp"
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#include <queue>
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/** The queue of events for an AI. */
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struct AIEventData {
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std::queue<AIEvent *> stack; ///< The actual queue.
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};
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/* static */ void AIEventController::CreateEventPointer()
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{
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assert(AIObject::GetEventPointer() == NULL);
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AIObject::GetEventPointer() = new AIEventData();
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}
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/* static */ void AIEventController::FreeEventPointer()
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{
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AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
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/* Free all waiting events (if any) */
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while (!data->stack.empty()) {
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AIEvent *e = data->stack.front();
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data->stack.pop();
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e->Release();
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}
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/* Now kill our data pointer */
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delete data;
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}
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/* static */ bool AIEventController::IsEventWaiting()
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{
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if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
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AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
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return !data->stack.empty();
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}
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/* static */ AIEvent *AIEventController::GetNextEvent()
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{
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if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
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AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
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if (data->stack.empty()) return NULL;
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AIEvent *e = data->stack.front();
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data->stack.pop();
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return e;
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}
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/* static */ void AIEventController::InsertEvent(AIEvent *event)
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{
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if (AIObject::GetEventPointer() == NULL) AIEventController::CreateEventPointer();
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AIEventData *data = (AIEventData *)AIObject::GetEventPointer();
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event->AddRef();
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data->stack.push(event);
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}
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