ATerrainLODBlock.cpp

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#include "pch.h"
#include "ATerrainLODBlock.h"
#include "ATerrainSection.h"
 
#include <Toshi/TSystem.h>
#include <Toshi/TScheduler.h>
 
//-----------------------------------------------------------------------------
// Enables memory debugging.
// Note: Should be the last include!
//-----------------------------------------------------------------------------
#include <Core/TMemoryDebugOn.h>
 
TOSHI_NAMESPACE_USING
 
ATerrainLODBlock::ATerrainLODBlock( TUINT a_uiHeapSize, const TCHAR* a_szName )
{
    m_pAllocatedSize  = TNULL;
    m_pUnk2           = 0;
    m_pVISGroup       = TNULL;
    m_eLODType        = ATerrainLODType_None;
    m_fLastAccessTime = 0.0f;
    m_uiHeapSize      = a_uiHeapSize;
    m_bIsUnused       = TTRUE;
 
    m_pCreatedMemBlock = g_pMemory->CreateMemBlock( m_uiHeapSize, a_szName, g_pMemory->GetGlobalBlock(), 0 );
    m_Allocator.SetMemBlock( m_pCreatedMemBlock );
}
 
ATerrainLODBlock::~ATerrainLODBlock()
{
    g_pMemory->DestroyMemBlock( m_pCreatedMemBlock );
    m_pCreatedMemBlock = (TMemory::MemBlock*)1;
    m_Allocator.SetMemBlock( TNULL );
 
    static TUINT32 s_AllocatedSizeAfterDestroy = 0;
    static TUINT32 s_Unk2AfterDestroy          = 0;
 
    m_pAllocatedSize = &s_AllocatedSizeAfterDestroy;
    m_pUnk2          = &s_Unk2AfterDestroy;
}
 
void ATerrainLODBlock::SetupTRB( TTRB* a_pTRB, ATerrainLODBlock* a_pOther )
{
    Node::InsertAfter( a_pOther );
    a_pTRB->SetMemoryFunctions(
        []( TTRB::AllocType alloctype, TUINT32 size, TINT16 unk1, TUINT32 unk2, void* userData ) -> void* {
            auto pBlock = TSTATICCAST( ATerrainLODBlock, userData );
 
            if ( pBlock->m_pAllocatedSize )
            {
                *pBlock->m_pAllocatedSize += size;
            }
 
            return TMemalign( 128, size, pBlock->Next()->m_pCreatedMemBlock );
        },
        []( TTRB::AllocType alloctype, void* ptr, TINT16 unk1, TUINT32 unk2, void* userData ) {
            TFree( ptr );
        },
        a_pOther
    );
}
 
void ATerrainLODBlock::UpdateLastAccessTime()
{
    m_fLastAccessTime = g_oSystemManager.GetScheduler()->GetTotalTime();
}
 
void ATerrainLODBlock::Assign( ATerrainSection* a_pVISGroup, ATerrainLODType a_eLODType )
{
    if ( m_pVISGroup )
    {
        m_pVISGroup->DestroyLOD( m_eLODType );
        m_pVISGroup = TNULL;
        m_eLODType  = ATerrainLODType_None;
    }
 
    m_fLastAccessTime = 0.0f;
    m_pVISGroup       = a_pVISGroup;
    m_eLODType        = a_eLODType;
 
    if ( a_pVISGroup )
    {
        UpdateLastAccessTime();
    }
    else
    {
        m_bIsUnused = TTRUE;
    }
}