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--[[
font_api mod for Minetest - Library to add font display capability
to display_api mod.
(c) Pierre-Yves Rollo
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
--]]
-- Global variables
-------------------
font_api = {}
font_api.name = minetest.get_current_modname()
font_api.path = minetest.get_modpath(font_api.name)
-- Inclusions
-------------
dofile(font_api.path.."/font.lua")
dofile(font_api.path.."/registry.lua")
--- Standard on_display_update entity callback.
-- Node should have a corresponding display_entity with size, resolution and
-- maxlines fields and optionally halign, valign and color fields
-- @param pos Node position
-- @param objref Object reference of entity
function font_api.on_display_update(pos, objref)
local meta = minetest.get_meta(pos)
local text = meta:get_string("display_text")
local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
local entity = objref:get_luaentity()
if entity and ndef.display_entities[entity.name] then
local def = ndef.display_entities[entity.name]
local font = font_api.get_font(meta:get_string("font") ~= ""
and meta:get_string("font") or def.font_name)
local maxlines = def.maxlines or 1 -- TODO:How to do w/o maxlines ?
objref:set_properties({
textures={font:make_text_texture(text,
font:get_height(maxlines) * def.size.x / def.size.y
/ (def.aspect_ratio or 1),
font:get_height(maxlines),
def.maxlines, def.halign, def.valign, def.color)},
visual_size = def.size
})
end
end
-- Compatibility
font_lib = font_api
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