Method CreateHeightField

Source/Engine/Terrain/TerrainPatch.cpp:2174–2208

}

bool TerrainPatch::CreateHeightField()
{
    PROFILE_CPU();
    ASSERT(_physicsHeightField == nullptr);

    // Skip if height field data is missing but warn on loading failed
    if (_heightfield == nullptr)
        return true;
    if (_heightfield->WaitForLoaded() || _heightfield->Data.IsEmpty())
    {
        LOG(Warning, "Cannot create terrain collision. Failed to load heightfield data for terrain {0} patch {1}x{2}.", _terrain->ToString(), _x, _z);
        return true;
    }

    // Check if the cooked collision matches the engine version
    auto collisionHeader = (TerrainCollisionDataHeader*)_heightfield->Data.Get();
    if (collisionHeader->CheckOldMagicNumber != MAX_int32 || collisionHeader->Version != TerrainCollisionDataHeader::CurrentVersion)
    {
        // Reset height map
        PROFILE_CPU_NAMED("ResetHeightMap");
        const float* data = GetHeightmapData();
        return SetupHeightMap(_cachedHeightMap.Count(), data);
    }

    // Create heightfield object from the data
    _collisionScaleXZ = collisionHeader->ScaleXZ * TERRAIN_UNITS_PER_VERTEX;
    _physicsHeightField = PhysicsBackend::CreateHeightField(_heightfield->Data.Get() + sizeof(TerrainCollisionDataHeader), _heightfield->Data.Count() - sizeof(TerrainCollisionDataHeader));
    if (_physicsHeightField == nullptr)
    {
        LOG(Error, "Failed to create terrain collision height field.");
        return true;
    }

    return false;
}

void TerrainPatch::UpdateCollisionScale() const
{