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// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// *
// * This program 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, either version 3 of the License, or
// * (at your option) any later version.
// *
// * This program 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 this program. If not, see http://www.gnu.org/licenses/.
#include "common/iman.h"
#include <cassert>
template<> CInstanceManager* CSingleton<CInstanceManager>::m_instance = nullptr;
CInstanceManager::CInstanceManager()
{
for (int i = 0; i < CLASS_MAX; i++)
{
m_table[i].maxCount = 0;
m_table[i].usedCount = 0;
m_table[i].instances = nullptr;
}
}
CInstanceManager::~CInstanceManager()
{
Flush();
}
void CInstanceManager::Flush()
{
for (int i = 0; i < CLASS_MAX; i++)
{
if (m_table[i].instances != nullptr)
delete[] m_table[i].instances;
m_table[i].instances = nullptr;
}
}
void CInstanceManager::Flush(ManagedClassType classType)
{
if (classType < 0 || classType >= CLASS_MAX) return;
if (m_table[classType].instances == nullptr) return;
delete[] m_table[classType].instances;
m_table[classType].instances = nullptr;
}
bool CInstanceManager::AddInstance(ManagedClassType classType, void* instance, int max)
{
if (classType < 0 || classType >= CLASS_MAX) return false;
if (m_table[classType].instances == nullptr)
{
m_table[classType].instances = new void*[max];
m_table[classType].maxCount = max;
m_table[classType].usedCount = 0;
}
if (m_table[classType].usedCount >= m_table[classType].maxCount) return false;
int i = m_table[classType].usedCount++;
m_table[classType].instances[i] = instance;
return true;
}
bool CInstanceManager::DeleteInstance(ManagedClassType classType, void* instance)
{
if (classType < 0 || classType >= CLASS_MAX) return false;
for (int i = 0; i < m_table[classType].usedCount; i++)
{
if (m_table[classType].instances[i] == instance)
m_table[classType].instances[i] = nullptr;
}
Compress(classType);
return true;
}
void* CInstanceManager::SearchInstance(ManagedClassType classType, int rank)
{
if (classType < 0 || classType >= CLASS_MAX) return nullptr;
if (m_table[classType].instances == nullptr) return nullptr;
if (rank >= m_table[classType].usedCount) return nullptr;
return m_table[classType].instances[rank];
}
void CInstanceManager::Compress(ManagedClassType classType)
{
if (classType < 0 || classType >= CLASS_MAX) return;
int j = 0;
for (int i = 0; i < m_table[classType].usedCount; i++)
{
if (m_table[classType].instances[i] != nullptr)
m_table[classType].instances[j++] = m_table[classType].instances[i];
}
m_table[classType].usedCount = j;
}
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