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https://github.com/moparisthebest/minetest
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Use memset for flag initialization (compiler optimization is way better)
use temp variables instead of recalculating array index
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496cb115b1
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@ -183,11 +183,10 @@ void VoxelManipulator::addArea(VoxelArea area)
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// Allocate and clear new data
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MapNode *new_data = new MapNode[new_size];
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assert(new_data);
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u8 *new_flags = new u8[new_size];
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for(s32 i=0; i<new_size; i++)
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{
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new_flags[i] = VOXELFLAG_NOT_LOADED;
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}
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assert(new_flags);
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memset(new_flags, VOXELFLAG_NOT_LOADED, new_size);
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// Copy old data
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@ -195,11 +194,13 @@ void VoxelManipulator::addArea(VoxelArea area)
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for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
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for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
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{
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unsigned int old_index = m_area.index(x,y,z);
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// If loaded, copy data and flags
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if((m_flags[m_area.index(x,y,z)] & VOXELFLAG_NOT_LOADED) == false)
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if((m_flags[old_index] & VOXELFLAG_NOT_LOADED) == false)
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{
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new_data[new_area.index(x,y,z)] = m_data[m_area.index(x,y,z)];
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new_flags[new_area.index(x,y,z)] = m_flags[m_area.index(x,y,z)];
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unsigned int new_index = new_area.index(x,y,z);
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new_data[new_index] = m_data[old_index];
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new_flags[new_index] = m_flags[old_index];
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}
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}
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