77 lines
2.6 KiB
Lua
77 lines
2.6 KiB
Lua
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--[[
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font_api mod for Minetest - Library creating textures with fonts and text
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(c) Pierre-Yves Rollo
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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--]]
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-- Integration with display API
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if minetest.get_modpath("display_api") then
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--- Standard on_display_update entity callback.
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-- Node should have properly configured display_entity.
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-- @param pos Node position
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-- @param objref Object reference of entity
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font_api.on_display_update = function (pos, objref)
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local meta = minetest.get_meta(pos)
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local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
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local entity = objref:get_luaentity()
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if not entity or not ndef.display_entities[entity.name] then
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return
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end
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local def = ndef.display_entities[entity.name]
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local font = font_api.get_font(meta:get_string("font") ~= ""
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and meta:get_string("font") or def.font_name)
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local text = meta:get_string(def.meta_text or "display_text")
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-- Compute entity resolution accroding to given attributes
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local texturew, textureh
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textureh = font:get_height(def.lines or def.maxlines or 1)
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if def.columns then
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if font.fixedwidth then
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texturew = def.columns * font.fixedwidth
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if def.aspect_ratio then
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minetest.log('warning', "[font_api] 'aspect_ratio' ignored because 'columns' is specified")
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end
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else
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minetest.log('warning', "[font_api] 'columns' ignored because '"..font.name.."' is not a fixed width font.")
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end
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end
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if not texturew then
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if not def.aspect_ratio then
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minetest.log('warning', "[font_api] No 'aspect_ratio' specified, using default 1.")
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end
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texturew = textureh * def.size.x / def.size.y / (def.aspect_ratio or 1)
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end
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objref:set_properties({
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textures={ font:render(text, texturew, textureh, {
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lines = def.maxlines or def.lines,
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halign = def.halign,
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valign = def.valign,
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color = def.color} ) },
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visual_size = def.size,
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})
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end
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else
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font_api.on_display_update = function (pos, objref)
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minetest.log('error', '[font_api] font_api.on_display_update called but display_api mod not enabled.')
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end
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end
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