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106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
/******************************************************************************
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* File - asset_index.h
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* Author - Joey Pollack
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* Date - 2021/10/25 (y/m/d)
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* Mod Date - 2021/10/25 (y/m/d)
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* Description - Loads and stores the index.dat file. Allows querying
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* the asset index by asset ID or name.
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******************************************************************************/
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#include "asset_index.h"
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#include <utils/binary_file_buffer.h>
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namespace lunarium
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{
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AssetIndex* AssetIndex::mpInstance = nullptr;
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AssetIndex::AssetIndex()
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{
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}
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AssetIndex& AssetIndex::GetInstance()
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{
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if (!mpInstance)
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{
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mpInstance = new AssetIndex;
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}
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return *mpInstance;
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}
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void AssetIndex::FreeInstance()
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{
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for (auto iter = mpInstance->mAssets.begin(); iter != mpInstance->mAssets.end(); iter++)
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{
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delete iter->second;
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}
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mpInstance->mAssets.clear();
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mpInstance->mAssetsByName.clear();
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delete mpInstance;
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mpInstance = nullptr;
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}
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OpRes AssetIndex::LoadIndex(const char* filename)
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{
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BinaryFileBuffer buffer;
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if (!buffer.LoadFile(filename))
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{
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return OpRes::Fail("AssetIndex::LoadIndex - unable to load file: %s", filename);
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}
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int32_t num_assets = 0;
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buffer.Read((char*) &num_assets, 4);
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char str_buf[512];
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for (int i = 0; i < num_assets; i++)
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{
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AssetInfo* pAI = new AssetInfo;
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buffer.Read((char*) &pAI->ID, 4);
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int16_t name_size = 0;
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buffer.Read((char*) &name_size, 2);
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buffer.Read(str_buf, name_size);
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pAI->Name = str_buf;
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buffer.Read((char*) &pAI->Type, 2);
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buffer.Read((char*) &name_size, 2);
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buffer.Read(str_buf, name_size);
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pAI->File = str_buf;
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buffer.Read((char*) &pAI->Offset, 4);
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mAssets[pAI->ID] = pAI;
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mAssetsByName[pAI->Name] = pAI;
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}
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buffer.Unload();
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return OpRes::OK();
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}
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const AssetIndex::AssetInfo* AssetIndex::GetAssetInfo(int id) const
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{
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auto res = mAssets.find(id);
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if (res != mAssets.end())
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{
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return res->second;
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}
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return nullptr;
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}
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const AssetIndex::AssetInfo* AssetIndex::GetAssetInfo(const char* name) const
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{
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auto res = mAssetsByName.find(name);
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if (res != mAssetsByName.end())
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{
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return res->second;
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}
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return nullptr;
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}
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} |