Minetest-WorldEditAdditions/worldeditadditions/lib/selection/selection.lua

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local wea_c = worldeditadditions_core
local Vector3 = wea_c.Vector3
--- Functions for handling selections of the defined pos1/pos2 region.
--
-- These functions primarily back the [cloud wand](https://worldeditadditions.mooncarrot.space/Reference/#cloud). To manipulate positions directly, see the [`worldeditadditions_core.pos`]() namespace.
-- @namespace worldeditadditions.selection
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-- ███████ ███████ ██ ███████ ██████ ████████ ██ ██████ ███ ██
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-- ███████ █████ ██ █████ ██ ██ ██ ██ ██ ██ ██ ██
-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
-- ███████ ███████ ███████ ███████ ██████ ██ ██ ██████ ██ ████
---Selection helpers and modifiers
local selection = {}
--- Additively adds a point to the current selection defined by pos1..pos2 or
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-- makes a selection from the provided point.
-- @param name string Player name.
-- @param pos vector The position to include.
-- @returns void
function selection.add_point(name, newpos)
if newpos ~= nil then
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-- print("DEBUG:selection.add_point newpos", newpos)
local has_pos1 = not not wea_c.pos.get1(name)
local has_pos2 = not not wea_c.pos.get2(name)
local created_new = not has_pos1 or not has_pos2
if not has_pos1 then wea_c.pos.set1(name, Vector3.clone(newpos)) end
if not has_pos2 then wea_c.pos.set2(name, Vector3.clone(newpos)) end
-- Now no longer needed, given that the new sysstem uses an event listener to push updates to the selected region automatically
-- worldedit.marker_update(name)
local pos1, pos2 = wea_c.pos.get1(name), wea_c.pos.get2(name)
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local volume_before = worldedit.volume(pos1, pos2)
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local new_pos1, new_pos2 = Vector3.expand_region(
Vector3.clone(pos1),
Vector3.clone(pos2),
newpos
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)
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wea_c.pos.set1(name, new_pos1)
wea_c.pos.set2(name, new_pos2)
local volume_after = worldedit.volume(new_pos1, new_pos2)
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local volume_difference = volume_after - volume_before
if volume_difference == 0 and created_new then
volume_difference = 1
end
local msg = "Expanded region by "
if created_new then msg = "Created new region with " end
msg = msg..volume_difference.." node"
if volume_difference ~= 1 then msg = msg.."s" end
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-- Done automatically
-- worldedit.marker_update(name)
worldedit.player_notify(name, msg)
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else
worldedit.player_notify(name, "Error. Too far away (try raising your maxdist with //farwand maxdist <number>)")
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-- print("[set_pos1]", name, "nil")
end
end
--- Clears current selection, *but only pos1 and pos2!
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-- @param name string Player name.
-- @returns void
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function selection.clear_points(name)
wea_c.pos.clear(name)
-- worldedit.marker_update(name)
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worldedit.player_notify(name, "Region cleared")
end
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--- Checks if a string is a valid axis.
-- @param str string String to check (be sure to remove any + or -).
-- @param hv bool Include "h" (general horizontal) and "v" (general vertical).
-- @return bool If string is a valid axis then true.
function selection.check_axis(str,hv)
if hv then
return (str == "x" or str == "y" or str == "z" or str == "h" or str == "v")
else
return (str == "x" or str == "y" or str == "z")
end
end
--- Checks if a string is a valid dir.
-- @param str string String to check (be sure to remove any + or -).
-- @return bool If string is a valid dir then true.
function selection.check_dir(str)
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return (str == "facing" or str == "front" or str == "back" or str == "left" or str == "right" or str == "up" or str == "down")
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end
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return selection