diff options
Diffstat (limited to 'src/script/api/script_event.cpp')
-rw-r--r-- | src/script/api/script_event.cpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/script/api/script_event.cpp b/src/script/api/script_event.cpp new file mode 100644 index 000000000..6fdbea02a --- /dev/null +++ b/src/script/api/script_event.cpp @@ -0,0 +1,72 @@ +/* $Id$ */ + +/* + * 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 script_event.cpp Implementation of AIEvent. */ + +#include "../../stdafx.h" +#include "script_event_types.hpp" + +#include <queue> + +/** The queue of events for an AI. */ +struct AIEventData { + std::queue<AIEvent *> stack; ///< The actual queue. +}; + +/* 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); +} + |