LuaVoxelManip: Add option to allocate blank data

[oweals/minetest.git] / src / map.cpp

diff --git a/src/map.cpp b/src/map.cpp
index fde5b585d72459c918a9f27276b6b1ee4ef5cbb6..05e07212db3d631ac286626f2b3a57f1d9ae7750 100644 (file)
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -3597,8 +3597,31 @@ ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
 {
 }
 
+void ManualMapVoxelManipulator::initializeBlank(v3s16 blockpos_min,
+       v3s16 blockpos_max)
+{
+       // Units of these are MapBlocks
+       v3s16 pmin = blockpos_min;
+       v3s16 pmax = blockpos_max;
+
+       VoxelArea block_area_nodes(pmin * MAP_BLOCKSIZE,
+               (pmax + 1) * MAP_BLOCKSIZE - v3s16(1,1,1));
+
+       addArea(block_area_nodes);
+       u32 extent = m_area.getVolume();
+       for (u32 i = 0; i != extent; i++)
+               m_data[i] = MapNode(CONTENT_IGNORE);
+
+       for (s32 z = pmin.Z; z <= pmax.Z; z++)
+       for (s32 y = pmin.Y; y <= pmax.Y; y++)
+       for (s32 x = pmin.X; x <= pmax.X; x++)
+               m_loaded_blocks[v3s16(x, y, z)] = 0;
+
+       m_is_dirty = false;
+}
+
 void ManualMapVoxelManipulator::initialEmerge(v3s16 blockpos_min,
-                                               v3s16 blockpos_max, bool load_if_inexistent)
+       v3s16 blockpos_max, bool load_if_inexistent)
 {
        TimeTaker timer1("initialEmerge", &emerge_time);