techpack/tubelib/mark.lua

94 lines
2.4 KiB
Lua

--[[
Tube Library
============
Copyright (C) 2017-2020 Joachim Stolberg
Code derived from wordedit (sfan5, Anthony Zhang (Uberi/Temperest), and Brett O'Donnell (cornernote))
AGPL v3
See LICENSE.txt for more information
mark.lua:
]]--
local marker_region = {}
function tubelib.unmark_region(name)
if marker_region[name] ~= nil then --marker already exists
--wip: make the area stay loaded somehow
for _, entity in ipairs(marker_region[name]) do
entity:remove()
end
marker_region[name] = nil
end
end
function tubelib.mark_region(name, pos1, pos2)
tubelib.unmark_region(name)
local thickness = 0.2
local sizex, sizey, sizez = (1 + pos2.x - pos1.x) / 2, (1 + pos2.y - pos1.y) / 2, (1 + pos2.z - pos1.z) / 2
local markers = {}
--XY plane markers
for _, z in ipairs({pos1.z - 0.5, pos2.z + 0.5}) do
local marker = minetest.add_entity({x=pos1.x + sizex - 0.5, y=pos1.y + sizey - 0.5, z=z}, "tubelib:region_cube")
if marker ~= nil then
marker:set_properties({
visual_size={x=sizex * 2, y=sizey * 2},
collisionbox = {-sizex, -sizey, -thickness, sizex, sizey, thickness},
})
marker:get_luaentity().player_name = name
table.insert(markers, marker)
end
end
--YZ plane markers
for _, x in ipairs({pos1.x - 0.5, pos2.x + 0.5}) do
local marker = minetest.add_entity({x=x, y=pos1.y + sizey - 0.5, z=pos1.z + sizez - 0.5}, "tubelib:region_cube")
if marker ~= nil then
marker:set_properties({
visual_size={x=sizez * 2, y=sizey * 2},
collisionbox = {-thickness, -sizey, -sizez, thickness, sizey, sizez},
})
marker:setyaw(math.pi / 2)
marker:get_luaentity().player_name = name
table.insert(markers, marker)
end
end
marker_region[name] = markers
end
function tubelib.switch_region(name, pos1, pos2)
if marker_region[name] ~= nil then --marker already exists
tubelib.unmark_region(name)
else
tubelib.mark_region(name, pos1, pos2)
end
end
minetest.register_entity(":tubelib:region_cube", {
initial_properties = {
visual = "upright_sprite",
visual_size = {x=1.1, y=1.1},
textures = {"tubelib_cube.png"},
use_texture_alpha = true,
visual_size = {x=10, y=10},
physical = false,
},
on_step = function(self, dtime)
if marker_region[self.player_name] == nil then
self.object:remove()
return
end
end,
on_punch = function(self, hitter)
tubelib.unmark_region(self.player_name)
end,
})