mirror of https://github.com/OpenTTD/OpenTTD.git
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
/* $Id$ */
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/** @file ai_event.cpp Implementation of AIEvent. */
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#include "ai_event_types.hpp"
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#include <queue>
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struct AIEventData {
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std::queue<AIEvent *> stack;
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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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