Mirrorlandia_minetest/areas
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Minor isSubarea optimization

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ShadowNinja 2015-10-30 20:31:24 -04:00
parent 8b0b8c1ad2
commit 10338cd5d1
1 changed files with 14 additions and 8 deletions
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22
internal.lua
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@ -128,19 +128,25 @@ function areas:remove(id, recurse)
end
end
-- Checks if a area between two points is entirely contained by another area
-- Checks if a area between two points is entirely contained by another area.
-- Positions must be sorted.
function areas:isSubarea(pos1, pos2, id)
local area = self.areas[id]
if not area then
return false
end
local p1, p2 = area.pos1, area.pos2
if (pos1.x >= p1.x and pos1.x <= p2.x) and
(pos2.x >= p1.x and pos2.x <= p2.x) and
(pos1.y >= p1.y and pos1.y <= p2.y) and
(pos2.y >= p1.y and pos2.y <= p2.y) and
(pos1.z >= p1.z and pos1.z <= p2.z) and
(pos2.z >= p1.z and pos2.z <= p2.z) then
local ap1, ap2 = area.pos1, area.pos2
local ap1x, ap1y, ap1z = ap1.x, ap1.y, ap1.z
local ap2x, ap2y, ap2z = ap2.x, ap2.y, ap2.z
local p1x, p1y, p1z = pos1.x, pos1.y, pos1.z
local p2x, p2y, p2z = pos2.x, pos2.y, pos2.z
if
(p1x >= ap1x and p1x <= ap2x) and
(p2x >= ap1x and p2x <= ap2x) and
(p1y >= ap1y and p1y <= ap2y) and
(p2y >= ap1y and p2y <= ap2y) and
(p1z >= ap1z and p1z <= ap2z) and
(p2z >= ap1z and p2z <= ap2z) then
return true
end
end