forked from mtcontrib/maidroid
54 lines
1.2 KiB
Lua
54 lines
1.2 KiB
Lua
------------------------------------------------------------
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-- Copyright (c) 2016 tacigar. All rights reserved.
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-- https://github.com/tacigar/maidroid
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------------------------------------------------------------
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maidroid_core._aux = {}
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function maidroid_core._aux.search_surrounding(pos, pred, searching_range)
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pos = vector.round(pos)
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local max_xz = math.max(searching_range.x, searching_range.z)
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for j = -searching_range.y, searching_range.y do
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local p = vector.add({x = 0, y = j, z = 0}, pos)
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if pred(p) then
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return p
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end
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end
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for i = 0, max_xz do
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for j = -searching_range.y, searching_range.y do
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for k = -i, i do
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if searching_range.x >= k and searching_range.z >= i then
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local p = vector.add({x = k, y = j, z = i}, pos)
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if pred(p) then
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return p
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end
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p = vector.add({x = k, y = j, z = -i}, pos)
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if pred(p) then
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return p
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end
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end
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if searching_range.z >= i and searching_range.z >= k then
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if i ~= k then
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local p = vector.add({x = i, y = j, z = k}, pos)
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if pred(p) then
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return p
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end
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end
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if -i ~= k then
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local p = vector.add({x = -i, y = j, z = k}, pos)
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if pred(p) then
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return p
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end
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end
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end
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end
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end
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end
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return nil
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end
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