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Load iw4x zones for iw4

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Jan
2021-04-01 20:29:42 +02:00
parent 590a108a1b
commit 1cc5be2f64
6 changed files with 99 additions and 8 deletions
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32
src/ZoneLoading/Game/IW4/ZoneLoaderFactoryIW4.cpp
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@ -15,6 +15,7 @@
#include "Loading/Processor/ProcessorAuthedBlocks.h"
#include "Loading/Processor/ProcessorCaptureData.h"
#include "Loading/Processor/ProcessorInflate.h"
#include "Loading/Processor/ProcessorIW4xDecryption.h"
#include "Loading/Steps/StepVerifyMagic.h"
#include "Loading/Steps/StepSkipBytes.h"
#include "Loading/Steps/StepVerifyFileName.h"
@ -36,27 +37,43 @@ class ZoneLoaderFactory::Impl
return GameLanguage::LANGUAGE_NONE;
}
static bool CanLoad(ZoneHeader& header, bool* isSecure, bool* isOfficial)
static bool CanLoad(ZoneHeader& header, bool* isSecure, bool* isOfficial, bool* isIw4x)
{
assert(isSecure != nullptr);
assert(isOfficial != nullptr);
assert(isIw4x != nullptr);
if (header.m_version != ZoneConstants::ZONE_VERSION)
{
return false;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_INFINITY_WARD, 8))
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_IW4X, std::char_traits<char>::length(ZoneConstants::MAGIC_IW4X)))
{
if(*reinterpret_cast<uint32_t*>(&header.m_magic[std::char_traits<char>::length(ZoneConstants::MAGIC_IW4X)]) == ZoneConstants::IW4X_ZONE_VERSION)
{
*isSecure = false;
*isOfficial = false;
*isIw4x = true;
return true;
}
return false;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_SIGNED_INFINITY_WARD, std::char_traits<char>::length(ZoneConstants::MAGIC_SIGNED_INFINITY_WARD)))
{
*isSecure = true;
*isOfficial = true;
*isIw4x = false;
return true;
}
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED, 8))
if (!memcmp(header.m_magic, ZoneConstants::MAGIC_UNSIGNED, std::char_traits<char>::length(ZoneConstants::MAGIC_UNSIGNED)))
{
*isSecure = false;
*isOfficial = true;
*isIw4x = false;
return true;
}
@ -153,9 +170,10 @@ public:
{
bool isSecure;
bool isOfficial;
bool isIw4x;
// Check if this file is a supported IW4 zone.
if (!CanLoad(header, &isSecure, &isOfficial))
if (!CanLoad(header, &isSecure, &isOfficial, &isIw4x))
return nullptr;
// Create new zone
@ -180,6 +198,12 @@ public:
zoneLoader->AddLoadingStep(std::make_unique<StepAddProcessor>(std::make_unique<ProcessorInflate>(ZoneConstants::AUTHED_CHUNK_SIZE)));
if (isIw4x) // IW4x has one extra byte of padding here for protection purposes
{
zoneLoader->AddLoadingStep(std::make_unique<StepAddProcessor>(std::make_unique<ProcessorIW4xDecryption>()));
zoneLoader->AddLoadingStep(std::make_unique<StepSkipBytes>(1));
}
// Start of the XFile struct
zoneLoader->AddLoadingStep(std::make_unique<StepSkipBytes>(8));
// Skip size and externalSize fields since they are not interesting for us