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OpenRCT2/src/openrct2/object/ObjectFactory.cpp

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#pragma region Copyright (c) 2014-2017 OpenRCT2 Developers
/*****************************************************************************
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
* For more information, visit https://github.com/OpenRCT2/OpenRCT2
*
* OpenRCT2 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.
*
* A full copy of the GNU General Public License can be found in licence.txt
*****************************************************************************/
#pragma endregion
#include "../core/Console.hpp"
#include "../core/FileStream.hpp"
#include "../core/Json.hpp"
#include "../core/Memory.hpp"
#include "../core/MemoryStream.h"
#include "../core/String.hpp"
#include "../OpenRCT2.h"
#include "../rct12/SawyerChunkReader.h"
#include "BannerObject.h"
#include "EntranceObject.h"
#include "FootpathItemObject.h"
#include "FootpathObject.h"
#include "LargeSceneryObject.h"
#include "Object.h"
#include "ObjectLimits.h"
#include "ObjectList.h"
#include "ObjectFactory.h"
#include "RideObject.h"
#include "SceneryGroupObject.h"
#include "SmallSceneryObject.h"
#include "StexObject.h"
#include "WallObject.h"
#include "WaterObject.h"
class ReadObjectContext : public IReadObjectContext
{
private:
std::string _objectName;
bool _loadImages;
bool _wasWarning = false;
bool _wasError = false;
public:
bool WasWarning() const { return _wasWarning; }
bool WasError() const { return _wasError; }
ReadObjectContext(const std::string &objectName, bool loadImages)
: _objectName(objectName),
_loadImages(loadImages)
{
}
bool ShouldLoadImages() override
{
return _loadImages;
}
void LogWarning(uint32 code, const utf8 * text) override
{
_wasWarning = true;
if (!String::IsNullOrEmpty(text))
{
Console::Error::WriteLine("[%s] Warning: %s", _objectName.c_str(), text);
}
}
void LogError(uint32 code, const utf8 * text) override
{
_wasError = true;
if (!String::IsNullOrEmpty(text))
{
Console::Error::WriteLine("[%s] Error: %s", _objectName.c_str(), text);
}
}
};
namespace ObjectFactory
{
static void ReadObjectLegacy(Object * object, IReadObjectContext * context, IStream * stream)
{
try
{
object->ReadLegacy(context, stream);
}
catch (const IOException &)
{
// TODO check that ex is really EOF and not some other error
context->LogError(OBJECT_ERROR_UNEXPECTED_EOF, "Unexpectedly reached end of file.");
}
catch (const std::exception &)
{
context->LogError(OBJECT_ERROR_UNKNOWN, nullptr);
}
}
Object * CreateObjectFromLegacyFile(const utf8 * path)
{
log_verbose("CreateObjectFromLegacyFile(\"%s\")", path);
Object * result = nullptr;
try
{
auto fs = FileStream(path, FILE_MODE_OPEN);
auto chunkReader = SawyerChunkReader(&fs);
rct_object_entry entry = fs.ReadValue<rct_object_entry>();
result = CreateObject(entry);
utf8 objectName[DAT_NAME_LENGTH + 1] = { 0 };
object_entry_get_name_fixed(objectName, sizeof(objectName), &entry);
log_verbose(" entry: { 0x%08X, \"%s\", 0x%08X }", entry.flags, objectName, entry.checksum);
auto chunk = chunkReader.ReadChunk();
log_verbose(" size: %zu", chunk->GetLength());
auto chunkStream = MemoryStream(chunk->GetData(), chunk->GetLength());
auto readContext = ReadObjectContext(objectName, !gOpenRCT2Headless);
ReadObjectLegacy(result, &readContext, &chunkStream);
if (readContext.WasError())
{
throw std::runtime_error("Object has errors");
}
}
catch (const std::exception &)
{
delete result;
result = nullptr;
}
return result;
}
Object * CreateObjectFromLegacyData(const rct_object_entry * entry, const void * data, size_t dataSize)
{
Guard::ArgumentNotNull(entry, GUARD_LINE);
Guard::ArgumentNotNull(data, GUARD_LINE);
Object * result = CreateObject(*entry);
if (result != nullptr)
{
utf8 objectName[DAT_NAME_LENGTH + 1];
object_entry_get_name_fixed(objectName, sizeof(objectName), entry);
auto readContext = ReadObjectContext(objectName, !gOpenRCT2Headless);
auto chunkStream = MemoryStream(data, dataSize);
ReadObjectLegacy(result, &readContext, &chunkStream);
if (readContext.WasError())
{
delete result;
result = nullptr;
}
}
return result;
}
Object * CreateObject(const rct_object_entry &entry)
{
Object * result;
uint8 objectType = object_entry_get_type(&entry);
switch (objectType) {
case OBJECT_TYPE_RIDE:
result = new RideObject(entry);
break;
case OBJECT_TYPE_SMALL_SCENERY:
result = new SmallSceneryObject(entry);
break;
case OBJECT_TYPE_LARGE_SCENERY:
result = new LargeSceneryObject(entry);
break;
case OBJECT_TYPE_WALLS:
result = new WallObject(entry);
break;
case OBJECT_TYPE_BANNERS:
result = new BannerObject(entry);
break;
case OBJECT_TYPE_PATHS:
result = new FootpathObject(entry);
break;
case OBJECT_TYPE_PATH_BITS:
result = new FootpathItemObject(entry);
break;
case OBJECT_TYPE_SCENERY_GROUP:
result = new SceneryGroupObject(entry);
break;
case OBJECT_TYPE_PARK_ENTRANCE:
result = new EntranceObject(entry);
break;
case OBJECT_TYPE_WATER:
result = new WaterObject(entry);
break;
case OBJECT_TYPE_SCENARIO_TEXT:
result = new StexObject(entry);
break;
default:
throw std::runtime_error("Invalid object type");
}
return result;
}
static uint8 ParseObjectType(const std::string &s)
{
if (s == "ride") return OBJECT_TYPE_RIDE;
if (s == "footpath") return OBJECT_TYPE_PATHS;
if (s == "footpath_banner") return OBJECT_TYPE_BANNERS;
if (s == "footpath_item") return OBJECT_TYPE_PATH_BITS;
if (s == "scenery_small") return OBJECT_TYPE_SMALL_SCENERY;
if (s == "scenery_large") return OBJECT_TYPE_LARGE_SCENERY;
if (s == "scenery_wall") return OBJECT_TYPE_WALLS;
if (s == "scenery_group") return OBJECT_TYPE_SCENERY_GROUP;
if (s == "park_entrance") return OBJECT_TYPE_PARK_ENTRANCE;
if (s == "water") return OBJECT_TYPE_WATER;
return 0xFF;
}
Object * CreateObjectFromJsonFile(const std::string &path)
{
log_verbose("CreateObjectFromJsonFile(\"%s\")", path.c_str());
Object * result = nullptr;
try
{
auto jRoot = Json::ReadFromFile(path.c_str());
auto jObjectType = json_object_get(jRoot, "objectType");
if (json_is_string(jObjectType))
{
auto objectType = ParseObjectType(json_string_value(jObjectType));
if (objectType != 0xFF)
{
auto id = json_string_value(json_object_get(jRoot, "id"));
rct_object_entry entry = { 0 };
auto originalId = String::ToStd(json_string_value(json_object_get(jRoot, "originalId")));
auto originalName = originalId;
if (originalId.length() == 8 + 1 + 8 + 1 + 8)
{
entry.flags = std::stoul(originalId.substr(0, 8), 0, 16);
originalName = originalId.substr(9, 8);
entry.checksum = std::stoul(originalId.substr(18, 8), 0, 16);
}
auto minLength = std::min<size_t>(8, originalName.length());
memcpy(entry.name, originalName.c_str(), minLength);
result = CreateObject(entry);
auto readContext = ReadObjectContext(id, !gOpenRCT2Headless);
result->ReadJson(&readContext, jRoot);
if (readContext.WasError())
{
throw std::runtime_error("Object has errors");
}
}
}
json_decref(jRoot);
}
catch (const std::runtime_error &err)
{
Console::Error::WriteLine("Unable to open or read '%s': %s", path.c_str(), err.what());
delete result;
result = nullptr;
}
return result;
}
}
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