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Rewrite of the class extension system, implements save game support.
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| /******************************************************************************* | ||
| /* O P E N S O U R C E -- V I N I F E R A ** | ||
| /******************************************************************************* | ||
| * | ||
| * @project Vinifera | ||
| * | ||
| * @file ABSTRACTEXT.CPP | ||
| * | ||
| * @author CCHyper | ||
| * | ||
| * @brief Base extension class for all game world objects. | ||
| * | ||
| * @license Vinifera 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. | ||
| * | ||
| * Vinifera 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/>. | ||
| * | ||
| ******************************************************************************/ | ||
| #pragma once | ||
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| #include "abstractext.h" | ||
| #include "tibsun_globals.h" | ||
| #include "tibsun_functions.h" | ||
| #include "swizzle.h" | ||
| #include "vinifera_saveload.h" | ||
| #include "extension.h" | ||
| #include "debughandler.h" | ||
| #include "asserthandler.h" | ||
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| /** | ||
| * Class constructor | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| AbstractClassExtension::AbstractClassExtension(const AbstractClass *this_ptr) : | ||
| ThisPtr(this_ptr) | ||
| { | ||
| //if (this_ptr) EXT_DEBUG_TRACE("AbstractClassExtension::AbstractClassExtension - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
| //ASSERT(ThisPtr != nullptr); // NULL ThisPtr is valid when performing a Load state operation. | ||
| } | ||
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| /** | ||
| * Class no-init constructor. | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| AbstractClassExtension::AbstractClassExtension(const NoInitClass &noinit) | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::AbstractClassExtension(NoInitClass) - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
| } | ||
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|
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| /** | ||
| * Class destructor | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| AbstractClassExtension::~AbstractClassExtension() | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::~AbstractClassExtension - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| ThisPtr = nullptr; | ||
| } | ||
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| /** | ||
| * Retrieves pointers to the supported interfaces on an object. | ||
| * | ||
| * @author: CCHyper, tomsons26 | ||
| */ | ||
| LONG AbstractClassExtension::QueryInterface(REFIID riid, LPVOID *ppv) | ||
| { | ||
| /** | ||
| * Always set out parameter to NULL, validating it first. | ||
| */ | ||
| if (ppv == nullptr) { | ||
| return E_POINTER; | ||
| } | ||
| *ppv = nullptr; | ||
|
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| if (riid == __uuidof(IUnknown)) { | ||
| *ppv = reinterpret_cast<IUnknown *>(this); | ||
| } | ||
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| if (riid == __uuidof(IStream)) { | ||
| *ppv = reinterpret_cast<IStream *>(this); | ||
| } | ||
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| if (riid == __uuidof(IPersistStream)) { | ||
| *ppv = static_cast<IPersistStream *>(this); | ||
| } | ||
|
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| if (*ppv == nullptr) { | ||
| return E_NOINTERFACE; | ||
| } | ||
|
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| /** | ||
| * Increment the reference count and return the pointer. | ||
| */ | ||
| reinterpret_cast<IUnknown *>(*ppv)->AddRef(); | ||
|
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| return S_OK; | ||
| } | ||
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| /** | ||
| * Increments the reference count for an interface pointer to a COM object. | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| ULONG AbstractClassExtension::AddRef() | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::AddRef - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| return 1; | ||
| } | ||
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| /** | ||
| * Decrements the reference count for an interface on a COM object. | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| ULONG AbstractClassExtension::Release() | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::Release - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| return 1; | ||
| } | ||
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| /** | ||
| * Determines whether an object has changed since it was last saved to its stream. | ||
| * | ||
| * @author: CCHyper | ||
| */ | ||
| HRESULT AbstractClassExtension::IsDirty() | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::IsDirty - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| return S_OK; | ||
| } | ||
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| /** | ||
| * Loads the object from the stream and requests a new pointer to | ||
| * the class we extended post-load. | ||
| * | ||
| * @author: CCHyper, tomsons26 | ||
| */ | ||
| HRESULT AbstractClassExtension::Internal_Load(IStream *pStm) | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::Internal_Load - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| if (!pStm) { | ||
| return E_POINTER; | ||
| } | ||
|
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| /** | ||
| * Load the unique id for this class. | ||
| */ | ||
| LONG id = 0; | ||
| HRESULT hr = pStm->Read(&id, sizeof(LONG), nullptr); | ||
| if (FAILED(hr)) { | ||
| return hr; | ||
| } | ||
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| Wstring this_name = Wstring(Extension::Utility::Get_TypeID_Name(this).c_str()) + ":" + Wstring("ThisPtr"); | ||
|
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| /** | ||
| * Register this instance to be available for remapping references to. | ||
| */ | ||
| VINIFERA_SWIZZLE_REGISTER_POINTER(id, this, this_name.Peek_Buffer()); | ||
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| /** | ||
| * Read this classes binary blob data directly into this instance. | ||
| */ | ||
| hr = pStm->Read(this, Size_Of(), nullptr); | ||
| if (FAILED(hr)) { | ||
| return hr; | ||
| } | ||
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| VINIFERA_SWIZZLE_REQUEST_POINTER_REMAP(ThisPtr, this_name.Peek_Buffer()); | ||
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| return hr; | ||
| } | ||
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| /** | ||
| * Saves the object to the stream. | ||
| * | ||
| * @author: CCHyper, tomsons26 | ||
| */ | ||
| HRESULT AbstractClassExtension::Internal_Save(IStream *pStm, BOOL fClearDirty) | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::Internal_Save - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| if (!pStm) { | ||
| return E_POINTER; | ||
| } | ||
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| Wstring this_name = Wstring(Extension::Utility::Get_TypeID_Name(this).c_str()) + ":" + Wstring("ThisPtr"); | ||
|
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| /** | ||
| * Fetch the save id for this instance. | ||
| */ | ||
| LONG id; | ||
| VINIFERA_SWIZZLE_FETCH_SWIZZLE_ID(this, id, this_name.Peek_Buffer()); | ||
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| //DEV_DEBUG_INFO("Writing id = 0x%08X.\n", id); | ||
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| HRESULT hr = pStm->Write(&id, sizeof(id), nullptr); | ||
| if (FAILED(hr)) { | ||
| return hr; | ||
| } | ||
|
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| /** | ||
| * Write this class instance as a binary blob. | ||
| */ | ||
| hr = pStm->Write(this, Size_Of(), nullptr); | ||
| if (FAILED(hr)) { | ||
| return hr; | ||
| } | ||
|
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| return hr; | ||
| } | ||
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| /** | ||
| * Retrieves the size of the stream needed to save the object. | ||
| * | ||
| * @author: CCHyper, tomsons26 | ||
| */ | ||
| LONG AbstractClassExtension::GetSizeMax(ULARGE_INTEGER *pcbSize) | ||
| { | ||
| //EXT_DEBUG_TRACE("AbstractClassExtension::GetSizeMax - 0x%08X\n", (uintptr_t)(ThisPtr)); | ||
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| if (!pcbSize) { | ||
| return E_POINTER; | ||
| } | ||
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| pcbSize->LowPart = Size_Of() + sizeof(uint32_t); // Add size of swizzle "id". | ||
| pcbSize->HighPart = 0; | ||
|
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| return S_OK; | ||
| } |
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