added a few features to this class while working on another mod

This commit is contained in:
FaceDeer 2017-02-25 21:47:16 -07:00
parent cdc53e7757
commit 486be59eba

@ -1,5 +1,4 @@
-- A simple special-purpose class, this is used for building up sets of three-dimensional points
-- I only added features to it as I needed them so may not be highly useful outside of this mod's context.
-- A simple special-purpose class, this is used for building up sets of three-dimensional points for fast reference
Pointset = {}
Pointset.__index = Pointset
@ -38,6 +37,18 @@ function Pointset:get(x, y, z)
return self.points[x][y][z]
end
function Pointset:set_pos(pos, value)
self:set(pos.x, pos.y, pos.z, value)
end
function Pointset:set_pos_if_not_in(excluded, pos, value)
self:set_if_not_in(excluded, pos.x, pos.y, pos.z, value)
end
function Pointset:get_pos(pos)
return self:get(pos.x, pos.y, pos.z)
end
function Pointset:pop()
-- returns a point that's in the 3D array, and then removes it.
local pos = {}
@ -71,3 +82,20 @@ function Pointset:pop()
return pos, val
end
function Pointset:get_pos_list(value)
-- Returns a list of all points with the given value in standard Minetest vector format. If no value is provided, returns all points
local outlist = {}
for x, ytable in ipairs(self.points) do
for y, ztable in ipairs(ytable) do
for z, val in ipairs(ztable) do
if (value == nil and val ~= nil ) or val == value then
table.insert(outlist, {x=x, y=y, z=z})
end
end
end
end
return outlist
end