diff options
Diffstat (limited to 'signs/common.lua')
| -rw-r--r-- | signs/common.lua | 173 |
1 files changed, 58 insertions, 115 deletions
diff --git a/signs/common.lua b/signs/common.lua index 7ae420c..24286b9 100644 --- a/signs/common.lua +++ b/signs/common.lua @@ -1,120 +1,18 @@ -local font = {} -signs.font_height = 10 - --- Get png width, suposing png width is less than 256 (it is the case for all font textures) -local function get_png_width(filename) - local file=assert(io.open(filename,"rb")) - -- All font png are smaller than 256x256 --> read only last byte - file:seek("set",19) - local w = file:read(1) - file:close() - return w:byte() -end - --- Computes line width for a given font height and text -function signs.get_line_width(text) - local char - local width = 0 - - for p=1,#text - do - char = text:sub(p,p):byte() - if font[char] then - width = width + font[char].width - end - end - - return width -end - ---- Builds texture part for a text line --- @param text Text to be rendered --- @param x Starting x position in texture --- @param width Width of the texture (extra text is not rendered) --- @param y Vertical position of the line in texture --- @return Texture string -function signs.make_line_texture(text, x, width, y) - local char - - local texture = "" - - for p=1,#text - do - char = text:sub(p,p):byte() - if font[char] then - -- Add image only if it is visible (at least partly) - if x + font[char].width >= 0 and x <= width then - texture = texture..string.format(":%d,%d=%s", x, y, font[char].filename) - end - x = x + font[char].width - end - end - return texture -end - -local function split_lines(text, maxlines) - local splits = text:split("\n") - if maxlines then - local lines = {} - for num = 1,maxlines do - lines[num] = splits[num] - end - return lines - else - return splits - end -end - -function signs.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] - if ndef and ndef.sign_model then - local model = signs.sign_models[ndef.sign_model] - local lines = split_lines(text, model.maxlines) - - local texturew = model.width/model.xscale - local textureh = model.height/model.yscale - - local texture = "" - - local y - if model.valing == "top" then - y = signs.font_height / 2 - else - y = (textureh - signs.font_height * #lines) / 2 + 1 - end - - for _, line in pairs(lines) do - texture = texture..signs.make_line_texture(line, - (texturew - signs.get_line_width(line)) / 2, - texturew, y) - y = y + signs.font_height - end - - local texture = string.format("[combine:%dx%d", texturew, textureh)..texture - if model.color then texture = texture.."^[colorize:"..model.color end - - objref:set_properties({ textures={texture}, visual_size = {x=model.width, y=model.height}}) - end -end - function signs.set_formspec(pos) local meta = minetest.get_meta(pos) local ndef = minetest.registered_nodes[minetest.get_node(pos).name] - if ndef and ndef.sign_model then - local model = signs.sign_models[ndef.sign_model] + if ndef and ndef.display_entities and ndef.display_entities["signs:text"] then + local maxlines = ndef.display_entities["signs:text"].maxlines local formspec - if model.maxlines == 1 then + if maxlines == 1 then formspec = "size[6,3]".. "field[0.5,0.7;5.5,1;display_text;Displayed text;${display_text}]".. "button_exit[2,2;2,1;ok;Write]" else local extralabel = "" - if model.maxlines then - extralabel = " (first "..model.maxlines.." lines only)" + if maxlines then + extralabel = " (first "..maxlines.." lines only)" end formspec = "size[6,4]".. @@ -192,14 +90,6 @@ function signs.on_rotate_direction(pos, node, user, mode, new_param2) end end --- Populate fonts table -local w, filename -for charnum=32,126 do - filename = string.format("signs_%02x.png", charnum) - w = get_png_width(signs.path.."/textures/"..filename) - font[charnum] = {filename=filename, width=w} -end - -- Generic callback for show_formspec displayed formspecs minetest.register_on_player_receive_fields(function(player, formname, fields) local found, _, mod, node_name, pos = formname:find("([%w_]+):([%w_]+)@(.+)") @@ -214,3 +104,56 @@ minetest.register_on_player_receive_fields(function(player, formname, fields) end end end) + +function signs.register_sign(mod, name, model) + -- Default fields + local fields = { + sunlight_propagates = true, + paramtype = "light", + paramtype2 = "wallmounted", + drawtype = "nodebox", + node_box = { + type = "wallmounted", + wall_side = {-0.5, -model.height/2, -model.width/2, + -0.5 + model.depth, model.height/2, model.width/2}, + wall_bottom = {-model.width/2, -0.5, -model.height/2, + model.width/2, -0.5 + model.depth, model.height/2}, + wall_top = {-model.width/2, 0.5, -model.height/2, + model.width/2, 0.5 - model.depth, model.height/2}, + }, + groups = {choppy=2,dig_immediate=2,attached_node=1}, + sounds = default.node_sound_defaults(), + display_entities = { + ["signs:text"] = { + on_display_update = font_lib.on_display_update, + depth = 0.499 - model.depth, + size = { x = 1, y = 1 }, + resolution = { x = 64, y = 64 }, + maxlines = 1, + }, + + }, + on_place = display_lib.on_place, + on_construct = function(pos) + signs.set_formspec(pos) + display_lib.on_construct(pos) + end, + on_destruct = display_lib.on_destruct, + on_rotate = display_lib.on_rotate, + on_receive_fields = signs.on_receive_fields, + } + + -- Node fields override + for key, value in pairs(model.node_fields) do + fields[key] = value + 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:text"][key] = value + end + + minetest.register_node(mod..":"..name, fields) +end |