display_modpack/signs_api/init.lua

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--[[
signs mod for Minetest - Various signs with text displayed on
(c) Pierre-Yves Rollo
This file is part of signs.
signs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
signs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with signs. If not, see <http://www.gnu.org/licenses/>.
--]]
signs_api = {}
signs_api.name = minetest.get_current_modname()
signs_api.path = minetest.get_modpath(signs_api.name)
-- Load support for intllib.
local S, NS = dofile(signs_api.path.."/intllib.lua")
signs_api.intllib = S
local F = function(...) return minetest.formspec_escape(S(...)) end
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function signs_api.set_display_text(pos, text, font)
local meta = minetest.get_meta(pos)
meta:set_string("display_text", text)
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if text and text ~= "" then
meta:set_string("infotext", "\""..text.."\"")
else
meta:set_string("infotext", "")
end
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if font then
meta:set_string("font", font)
end
display_api.update_entities(pos)
end
function signs_api.set_formspec(pos)
local meta = minetest.get_meta(pos)
local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
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if ndef and ndef.display_entities
and ndef.display_entities["signs:display_text"] then
local maxlines = ndef.display_entities["signs:display_text"].maxlines
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local fs, y
if maxlines == 1 then
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fs = "field[0.5,0.7;5.5,1;display_text;"..F("Text")..
";${display_text}]"
y = 1.2
else
local extralabel = ""
if maxlines then
extralabel = F(" (first %s lines only)"):format(maxlines)
end
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fs = "textarea[0.5,0.7;5.5,2;display_text;"..F("Text")..""..
extralabel..";${display_text}]"
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y = 2.4
end
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fs = fs.."button[1,"..y..";2,1;font;"..F("Font").."]"
fs = fs.."button_exit[3,"..y..";2,1;ok;"..F("Write").."]"
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y = y + 0.8
fs = "size[6,"..y.."]"..default.gui_bg..
default.gui_bg_img..default.gui_slots..fs
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meta:set_string("formspec", fs)
end
end
function signs_api.on_receive_fields(pos, formname, fields, player)
if not minetest.is_protected(pos, player:get_player_name()) then
if fields and (fields.ok or fields.key_enter) then
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signs_api.set_display_text(pos, fields.display_text)
end
if fields and (fields.font) then
signs_api.set_display_text(pos, fields.display_text)
font_api.show_font_list(player, pos)
end
end
end
-- On place callback for direction signs
-- (chooses which sign according to look direction)
function signs_api.on_place_direction(itemstack, placer, pointed_thing)
local name = itemstack:get_name()
local ndef = minetest.registered_nodes[name]
local restriction = display_api.is_rotation_restricted()
local bdir = {
x = pointed_thing.under.x - pointed_thing.above.x,
y = pointed_thing.under.y - pointed_thing.above.y,
z = pointed_thing.under.z - pointed_thing.above.z}
local pdir = placer:get_look_dir()
local ndir, test
if ndef.paramtype2 == "facedir" then
-- If legacy mode, only accept upright nodes
if restriction and bdir.x == 0 and bdir.z == 0 then
-- Ceiling or floor pointed (facedir chosen from player dir)
ndir = minetest.dir_to_facedir({x=pdir.x, y=0, z=pdir.z})
else
-- Wall pointed or no rotation restriction
ndir = minetest.dir_to_facedir(bdir, not restriction)
end
test = { [0]=-pdir.x, pdir.z, pdir.x, -pdir.z, -pdir.x, [8]=pdir.x }
end
if ndef.paramtype2 == "wallmounted" then
ndir = minetest.dir_to_wallmounted(bdir)
-- If legacy mode, only accept upright nodes
if restriction and (ndir == 0 or ndir == 1) then
ndir = minetest.dir_to_wallmounted({x=pdir.x, y=0, z=pdir.z})
end
test = { [0]=-pdir.x, -pdir.x, pdir.z, -pdir.z, -pdir.x, pdir.x}
end
-- Only for direction signs
-- TODO:Maybe improve ground and ceiling placement in every directions
if ndef.signs_other_dir then
if test[ndir] > 0 then
itemstack:set_name(ndef.signs_other_dir)
end
itemstack = minetest.item_place(itemstack, placer, pointed_thing, ndir)
itemstack:set_name(name)
return itemstack
else
return minetest.item_place(itemstack, placer, pointed_thing, ndir)
end
end
-- Handles screwdriver rotation
-- (see "if" block below for rotation restriction mode).
signs_api.on_rotate = function(pos, node, player, mode, new_param2)
-- If rotation mode is 1 and sign is directional, swap direction between
-- each rotation.
if mode == 1 then
local ndef = minetest.registered_nodes[node.name]
if ndef.signs_other_dir then
-- Switch direction
node = {name = ndef.signs_other_dir,
param1 = node.param1, param2 = node.param2}
minetest.swap_node(pos, node)
display_api.update_entities(pos)
-- Rotate only if not "main" sign
-- TODO:Improve detection of "main" direction sign
if ndef.groups and ndef.groups.not_in_creative_inventory then
return display_api.on_rotate(pos, node, player, mode, new_param2)
else
return true
end
end
end
return display_api.on_rotate(pos, node, player, mode, new_param2)
end
-- Legacy mode with rotation restriction
-- TODO:When MT < 5.0 no more in use, to be removed
if display_api.is_rotation_restricted() then
signs_api.on_rotate = function(pos, node, player, mode, new_param2)
-- If rotation mode is 2 and sign is directional, swap direction.
-- Otherwise use display_api's on_rotate function.
if mode == 2 then
local ndef = minetest.registered_nodes[node.name]
if ndef.signs_other_dir then
minetest.swap_node(pos, {name = ndef.signs_other_dir,
param1 = node.param1, param2 = node.param2})
display_api.update_entities(pos)
return true
end
end
return display_api.on_rotate(pos, node, player, mode, new_param2)
end
end
function signs_api.register_sign(mod, name, model)
-- Default fields
local fields = {
sunlight_propagates = true,
paramtype = "light",
paramtype2 = "facedir",
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {-model.width/2, -model.height/2, 0.5,
model.width/2, model.height/2, 0.5 - model.depth},
},
groups = {choppy=2, dig_immediate=2, not_blocking_trains=1, display_api=1},
sounds = default.node_sound_defaults(),
display_entities = {
["signs:display_text"] = {
on_display_update = font_api.on_display_update,
depth = 0.5 - display_api.entity_spacing - model.depth,
size = { x = model.width, y = model.height },
aspect_ratio = 1/2,
maxlines = 1,
},
},
on_place = display_api.on_place,
on_construct = function(pos)
local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
local meta = minetest.get_meta(pos)
meta:set_string("font", ndef.display_entities.font_name or
font_api.get_default_font_name())
signs_api.set_formspec(pos)
display_api.on_construct(pos)
end,
on_destruct = display_api.on_destruct,
on_rotate = signs_api.on_rotate,
on_receive_fields = signs_api.on_receive_fields,
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on_punch = function(pos, node, player, pointed_thing)
signs_api.set_formspec(pos)
display_api.update_entities(pos)
end,
}
-- Node fields override
for key, value in pairs(model.node_fields) do
if key == "groups" then
for key2, value2 in pairs(value) do
fields[key][key2] = value2
end
else
fields[key] = value
end
end
if not fields.wield_image then fields.wield_image = fields.inventory_image end
-- Entity fields override
for key, value in pairs(model.entity_fields) do
fields.display_entities["signs:display_text"][key] = value
end
minetest.register_node(mod..":"..name, fields)
end
-- Text entity for all signs
display_api.register_display_entity("signs:display_text")