diff --git a/signs_lib.lua b/signs_lib.lua index 61d81cdc..10ab338e 100644 --- a/signs_lib.lua +++ b/signs_lib.lua @@ -209,65 +209,80 @@ local fences_with_sign = { } -- some local helper functions -local homedecor_create_lines = function(text) - local tab = {} - for line in text:gmatch("([^|]+)|?") do - line = line:gsub("^%s*(.*)%s*$", "%1") -- Trim whitespace - table.insert(tab, line) - if #tab >= NUMBER_OF_LINES then break end +local function split_lines_and_words(text) + local lines = { } + local line = { } + for word in text:gmatch("%S+") do + if word == "|" then + table.insert(lines, line) + if #lines >= NUMBER_OF_LINES then break end + line = { } + elseif word == "\\|" then + table.insert(line, "|") + else + table.insert(line, word) + end end - return tab + table.insert(lines, line) + return lines end local math_max = math.max -local homedecor_generate_line = function(s, lineno) +local function make_line_texture(line, lineno) local width = 0 local maxw = 0 - local chars = { } + local words = { } -- We check which chars are available here. - for i = 1, #s do - local c = s:sub(i, i) - local w = charwidth[c] - if w then - width = width + w + 1 - if width >= SIGN_WIDTH then - width = 0 - else - maxw = math_max(width, maxw) + for word_i, word in ipairs(line) do + local chars = { } + local ch_offs = 0 + for i = 1, #word do + local c = word:sub(i, i) + local w = charwidth[c] + if w then + width = width + w + 1 + if width >= SIGN_WIDTH then + width = 0 + else + maxw = math_max(width, maxw) + end + table.insert(chars, { + off=ch_offs, + tex=FONT_FMT_SIMPLE:format(c:byte()) + }) + ch_offs = ch_offs + w + 1 end - table.insert(chars, c) end + width = width + charwidth[" "] + 1 + maxw = math_max(width, maxw) + table.insert(words, { chars=chars, w=ch_offs }) end - maxw = maxw - 1 - -- Okay, we actually build the "line texture" here. - local start_xpos = math.floor((SIGN_WIDTH - maxw) / 2) - local xpos = start_xpos local texture = { } - local ypos = (LINE_HEIGHT * (lineno --[[+ 1]])) - width = 0 + local start_xpos = math.floor((SIGN_WIDTH - maxw) / 2) - for i = 1, #s do - local c = s:sub(i, i) - local w = charwidth[c] - local tex = FONT_FMT_SIMPLE:format(c:byte()) - table.insert(texture, (":%d,%d=%s"):format(xpos, ypos, tex)) - xpos = xpos + w + 1 - width = width + w + 1 - if width > maxw then + local xpos = start_xpos + local ypos = (LINE_HEIGHT * lineno) + + for word_i, word in ipairs(words) do + local xoffs = (xpos - start_xpos) + if (xoffs > 0) and ((xoffs + word.w) > maxw) then xpos = start_xpos ypos = ypos + (LINE_HEIGHT * LINE_SEP) - width = 0 lineno = lineno + 1 + if lineno >= NUMBER_OF_LINES then break end end - if lineno >= NUMBER_OF_LINES then break end + for ch_i, ch in ipairs(word.chars) do + table.insert(texture, (":%d,%d=%s"):format(xpos + ch.off, ypos, ch.tex)) + end + xpos = xpos + word.w + charwidth[" "] end return table.concat(texture, ""), lineno @@ -285,21 +300,21 @@ local function copy ( t ) return nt end -local homedecor_generate_texture = function(lines) - local texture = { ("[combine:%dx%d"):format(SIGN_WIDTH, LINE_HEIGHT * NUMBER_OF_LINES * LINE_SEP) } - local lineno = 0 - for i = 1, #lines do +local function make_sign_texture(lines) + local texture = { ("[combine:%dx%d"):format(SIGN_WIDTH, LINE_HEIGHT * NUMBER_OF_LINES * LINE_SEP) } + local lineno = 0 + for i = 1, #lines do if lineno >= NUMBER_OF_LINES then break end - local linetex, ln = homedecor_generate_line(lines[i], lineno) - table.insert(texture, linetex) - lineno = ln + 1 - end - return table.concat(texture, "") + local linetex, ln = make_line_texture(lines[i], lineno) + table.insert(texture, linetex) + lineno = ln + 1 + end + return table.concat(texture, "") end local function set_obj_text(obj, text) obj:set_properties({ - textures={homedecor_generate_texture(homedecor_create_lines(text))}, + textures={make_sign_texture(split_lines_and_words(text))}, visual_size = TEXT_SCALE, }) end @@ -319,10 +334,19 @@ homedecor.destruct_sign = function(pos) end end +local function make_infotext(text) + local lines = split_lines_and_words(text) + local lines2 = { } + for _, line in ipairs(lines) do + table.insert(lines2, table.concat(line, " ")) + end + return table.concat(lines2, "\n") +end + homedecor.update_sign = function(pos, fields) local meta = minetest.get_meta(pos) if fields then - meta:set_string("infotext", table.concat(homedecor_create_lines(fields.text), "\n")) + meta:set_string("infotext", make_infotext(fields.text)) meta:set_string("text", fields.text) end local text = meta:get_string("text")