arrow_signs/init.lua

--[[
	Arrow signs mod for Minetest.

	This mods adds arrowsigns into Minetest. Rotatable in all directions.

	Thanks to:
		Jat15 for the place and rotate system
		Hectic for the new Textures that fit into Minetest  0.4.14

	This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
	To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
]]

arrow_signs={}

arrow_signs.formspec = "field[text;Sign text:;${text}]";

local creative = minetest.setting_getbool("creative_mode") or false
arrow_signs.on_place = function(itemstack, placer, pointed_thing)

	local posabove = pointed_thing.above
	local posunder = pointed_thing.under
	local vector = placer:get_look_dir()
	local place = true

	if posabove.y>posunder.y then
		if(vector.z>0.5 and vector.z<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 10})
		elseif (vector.x>0.5 and vector.x<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 19})
		elseif(-0.5>vector.z and -1<=vector.z) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 4})
		elseif (-0.5>vector.x and -1<=vector.x) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 13})
		else
			place = false
		end
	elseif posabove.y<posunder.y then
		if(vector.z>0.5 and vector.z<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 8})
		elseif (vector.x>0.5 and vector.x<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 17})
		elseif(-0.5>vector.z and -1<=vector.z) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 6})
		elseif (-0.5>vector.x and -1<=vector.x) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 15})
		else
			place = false
		end
	elseif posabove.z>posunder.z then
		if(vector.y>0.75 and vector.y<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 22})
		elseif (vector.y>=-1 and vector.y<-0.75) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 2})
		elseif (vector.x>=0 and vector.x<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 18})
		elseif (vector.x<0 and vector.x>=-1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 14})
		else
			place = false
		end
	elseif posabove.z<posunder.z then
		if(vector.y>0.75 and vector.y<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 20})
		elseif (vector.y>=-1 and vector.y<-0.75) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 0})
		elseif (vector.x>=0 and vector.x<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 16})
		elseif (vector.x<0 and vector.x>=-1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 12})
		else
			place = false
		end
	elseif posabove.x>posunder.x then
		if(vector.y>0.75 and vector.y<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 21})
		elseif (vector.y>=-1 and vector.y<-0.75) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 3})
		elseif (vector.z>=0 and vector.z<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 11})
		elseif (vector.z<0 and vector.z>=-1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 7})
		else
			place = false
		end
	elseif posabove.x<posunder.x then
		if(vector.y>0.75 and vector.y<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 23})
		elseif (vector.y>=-1 and vector.y<-0.75) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 1})
		elseif (vector.z>=0 and vector.z<=1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 9})
		elseif (vector.z<0 and vector.z>=-1) then
			minetest.add_node(posabove,{name = itemstack:get_name(), param2 = 5})
		else
			place = false
		end
	else
		place = false
	end

	if place then
		if not creative then
			itemstack:take_item()
		end
	else
		itemstack = minetest.rotate_node(itemstack, placer, pointed_thing)
	end

	return itemstack
end

arrow_signs.savetext = function(pos, formname, fields, sender)
	if fields.text then
		if not minetest.get_player_privs(sender:get_player_name())["interact"] then
			minetest.chat_send_player(sender:get_player_name(), "error: you don't have permission to edit the sign. you need the interact priv")
		return
		end
		if minetest.is_protected(pos, sender:get_player_name()) then
			minetest.record_protection_violation(pos, sender:get_player_name())
			return
		end
		local meta = minetest.get_meta(pos)
		fields.text = fields.text or ""
		minetest.log("action", (sender:get_player_name() or "").." wrote \""..fields.text..
				"\" to sign at "..minetest.pos_to_string(pos));
		meta:set_string("text", fields.text)
		local text,lines = arrow_signs.create_lines(fields.text)
		meta:set_string("infotext", '"'..text..'"')
		if lines > 4 then
			minetest.chat_send_player(sender:get_player_name(),"Information: \nYou've written more than 5 lines. \nIt may be that not all lines are displayed. \nPlease remove the last entry")
		end
	return true
	end
end

--this function creates the linebreaks
arrow_signs.create_lines = function(text)
	local text, n = text:gsub("[ ]*(%|)[ ]*", '"\n"')--search for |
	local text, m = text:gsub("[ ]*(%/)[ ]*", '"\n"')--search for /
	return text, n+m
end

arrow_signs.nodebox = {
	type = "fixed",
	fixed = {
		{ 0.25, -0.25, 0.4375, -0.25, 0.5, 0.5},
		{ 0.1875, -0.3125, 0.4375, -0.1875, -0.25, 0.5},
		{ 0.125, -0.3125, 0.4375, -0.125, -0.375, 0.5},
		{ 0.0625, -0.375, 0.4375, -0.0625, -0.437, 0.5}
	}
}

arrow_signs.selection_box = {
		type = "fixed",
		fixed = {
			{ 0.30, -0.5, 0.4375, -0.30, 0.5, 0.5}
		}
	}

local MODPATH = minetest.get_modpath("arrow_signs")

-- Wooden Sign
dofile(MODPATH.."/wood.lua")
-- Steel Sign
dofile(MODPATH.."/steel.lua")

--Shared Locked sign
if minetest.get_modpath("locks") then
	dofile(MODPATH.."/shared_locked.lua")
end