axon/compatibility.lua

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minetest.count_nodes_in_area = function( pos_min, pos_max, names, is_group )
local counts, node_counts
local voxel_manip = minetest.get_voxel_manip( )
voxel_manip:read_from_map( pos_min, pos_max )
node_counts = select( 2, minetest.find_nodes_in_area( pos_min, pos_max, names ) )
if is_group == false then
return counts
end
counts = { } -- use new table for transposing node counts into group counts
for _, name in ipairs( names ) do
local group_name = string.match( name, "group:(.+)" )
if group_name then
counts[ name ] = 0
for node_name, node_count in pairs( node_counts ) do
if minetest.registered_nodes[ node_name ].groups[ group_name ] then
counts[ name ] = counts[ name ] + node_count
end
end
else
counts[ name ] = node_counts[ name ]
end
end
return counts
end