Make a new FILE API and add a simple error screen in case most thing went down

game/gamemode.lua

@@ -140,7 +140,7 @@ end
 
 function GameMode:readGradeHistory()
     if love.filesystem.getInfo(SAVE_DIR..self.player_name.."_grade_history.sav") then
-        self.grade_history = bitser.loadLoveFile(SAVE_DIR..self.player_name.."_grade_history.sav")
+        self.grade_history = FILE.read(SAVE_DIR..self.player_name.."_grade_history.sav")
     else
         self.grade_history = {1,2,0,0}
     end
@@ -148,13 +148,13 @@ function GameMode:readGradeHistory()
     self.starting_grade = self.grade
     if self.grade > 1 then
         local temp_grade = copy(self.grade_history); temp_grade[2] = 0
-        bitser.dumpLoveFile(SAVE_DIR..self.player_name.."_grade_history.sav", temp_grade)
+        FILE.write(SAVE_DIR..self.player_name.."_grade_history.sav", temp_grade)
         end
 end
 
 function GameMode:readHiScores()
     if love.filesystem.getInfo(HIscoreFILE) then
-        self.hi_scores = bitser.loadLoveFile(HIscoreFILE)
+        self.hi_scores = FILE.read(HIscoreFILE)
     else
         self.hi_scores = {"TRO",0,"MIT",0,"ROM",0,"ITR",0,"OMI",0}
     end
@@ -220,7 +220,7 @@ function GameMode:updateHiScores()
         self.hi_scores[score_position] = self.grade_score
         hiscore_pos = {score_position-1, score_position}
     end
-    bitser.dumpLoveFile(HIscoreFILE, self.hi_scores)
+    FILE.write(HIscoreFILE, self.hi_scores)
     return hiscore_pos
 end
 
@@ -684,7 +684,7 @@ function GameMode:onGameOver()
                 self:updateGradeHistory()
             end
             hiscore_pos = self:updateHiScores()
-            bitser.dumpLoveFile(SAVE_DIR..self.player_name.."_grade_history.sav", self.grade_history)
+            FILE.write(SAVE_DIR..self.player_name.."_grade_history.sav", self.grade_history)
             self.did_grades = true
         end
         self:drawEndScoringInfo()

load.lua

@@ -1,15 +1,16 @@
--- Bigint library
-bigint = require "libs.bigint.bigint"
-number_names = require "libs.bigint.named-powers-of-ten"
-require "libs.simple-slider"
-
 -- Fonts
 FONT_tromi = love.graphics.newFont('res/fonts/monofonto rg.otf', 28)
 FONT_big = love.graphics.newFont('res/fonts/monofonto rg.otf', 56)
 
 local font_height = FONT_tromi:getHeight() * 0.5
 local font_big_height = FONT_big:getHeight() * 0.5
+
+-- Bigint library
+bigint = require "libs.bigint.bigint"
+number_names = require "libs.bigint.named-powers-of-ten"
+
 -- BUTTON library
+require "libs.simple-slider"
 BUTTON = require "libs.simple-button"
 BUTTON.setDefaultOption{
     draw = function(self)

main.lua

@@ -2,7 +2,6 @@ if os.getenv("LOCAL_LUA_DEBUGGER_VSCODE")=="1" then
     LLDEBUGGER=require('lldebugger')
     LLDEBUGGER.start()
 end
-
 require 'funcs'
 DEBUG_showKey = false
 
@@ -36,6 +35,7 @@ end
 
 function love.load()
     math.randomseed(os.time())
+    require "modules.file" "binser"
     require "settings"
 
     -- Window stuffs
@@ -48,8 +48,8 @@ function love.load()
 
     -- Now it's real time to load all stuffs!
     require "load"      -- Most game's resources are loaded in here
-    require "game.vctrl"   -- VCTRL
     require "modules.scene"
+    require "game.vctrl"   -- VCTRL
 
     function SCENE.update()
         SCENE = SETTINGS.firstTime and InputConfigScene(true) or TitleScene()
@@ -367,35 +367,6 @@ function love.errorhandler(msg)
     local errorCopied = false
     local enter_fullscreen = SETTINGS and SETTINGS["fullscreen"] or false
 
-    -- Render everything again in a canva
-    love.graphics.origin()
-    local screenshot_canva, screenshot_canva_scale
-    local ok, _ = pcall(function()
-        if love.graphics.getSystemLimits().texturesize >= 1280 then
-            screenshot_canva = love.graphics.newCanvas(1280, 960)
-            screenshot_canva_scale = 0.5
-        else
-            error()
-        end
-    end)
-    if not ok then
-        screenshot_canva = love.graphics.newCanvas(640, 480)
-        screenshot_canva_scale = 1
-    end
-
-    love.graphics.setCanvas(screenshot_canva)
-        pcall(
-            function()
-                love.graphics.origin()
-                local transformer = love.math.newTransform(0, 0, 0, 2, 2)
-                love.graphics.replaceTransform(transformer)
-                SCENE:render()
-            end
-        )
-    love.graphics.setCanvas()
-
-    love.audio.stop()
-
     -- Handling the error
     local err={"Error:"..msg}
     local c=2
@@ -411,7 +382,62 @@ function love.errorhandler(msg)
         end
     end
     print("\n"..table.concat(err,"\n",1,c-2))
-    local p = table.concat(err,"\n", 4)
+    local tracebacks = table.concat(err,"\n", 4)
+
+    if drawText == nil then
+        pcall(function()
+            FONT_tromi = love.graphics.newFont('res/fonts/monofonto rg.otf', 20)
+            require "funcs"
+        end)
+        if drawText == nil then
+            love.window.setMode(640, 480, {resizable = true})
+            return function() -- If "funcs" failed to load, we can only return a more simple version of error screen
+                love.event.pump()
+                for e, a, b, c in love.event.poll() do
+                    if e == "quit" then return 1 end
+                end
+
+                love.graphics.origin()
+                love.graphics.clear()
+                love.graphics.setColor(1, 1, 1)
+                love.graphics.setFont(FONT_tromi)
+                love.graphics.printf(
+                    err[1]:sub(7).."\nTraceback:\n"..tracebacks,
+                    30, 30, love.graphics.getWidth() - 10, "left"
+                )
+                love.graphics.present()
+                if love.timer then love.timer.sleep(0.1) end
+            end
+        end
+    end
+
+    -- Try to create a canva
+    love.graphics.origin()
+    local screenshot_canva, screenshot_canva_scale
+    local ok, _ = pcall(function()
+        if love.graphics.getSystemLimits().texturesize >= 1280 then
+            screenshot_canva = love.graphics.newCanvas(1280, 960)
+            screenshot_canva_scale = 0.5
+        else
+            error()
+        end
+    end)
+    if not ok then
+        screenshot_canva = love.graphics.newCanvas(640, 480)
+        screenshot_canva_scale = 1
+    end
+    -- Then draw everything again
+    love.graphics.setCanvas(screenshot_canva)
+        pcall(
+            function()
+                love.graphics.origin()
+                local transformer = love.math.newTransform(0, 0, 0, 2, 2)
+                love.graphics.replaceTransform(transformer)
+                SCENE:render()
+            end
+        )
+        love.audio.stop()
+    love.graphics.setCanvas()
 
     local function draw()
         love.graphics.origin()
@@ -436,7 +462,7 @@ Space   : show/hide screenshot  | OK    : Quit          Copy: copy error info
 Escape  : Quit                  | Cancel: Go back       Show: show/hide screenshot
 ]], 20, 10, 620, "left")
 
-            drawText(err[1]:sub(7).."\nTraceback:"..(errorCopied and " (Copied to clipboard)\n" or "\n")..p, 20, 180, 620, "left")
+            drawText(err[1]:sub(7).."\nTraceback:"..(errorCopied and " (Copied to clipboard)\n" or "\n")..tracebacks, 20, 180, 620, "left")
         else
             love.graphics.setColor(0, 0, 0, 0.8)
             love.graphics.rectangle("fill", 15, 450, 400, 25, 5, 5)
@@ -446,7 +472,7 @@ Escape  : Quit                  | Cancel: Go back       Show: show/hide screensh
         love.graphics.present()
     end
 
-    local fullErrorText = p
+    local fullErrorText = tracebacks
     local function copyToClipboard()
         love.system.setClipboardText(fullErrorText)
         errorCopied = true

modules/file.lua

@@ -0,0 +1,41 @@
+local FILE = {}
+local binser = require "libs.binser"
+local bitser = require "libs.bitser"
+
+local serializer_used
+
+function FILE.serialize(data)
+    if serializer_used == 'bitser' then
+        return bitser.dumps(data)
+    else
+        return binser.serialize(data)
+    end
+end
+
+function FILE.deserialize(data)
+    if serializer_used == 'bitser' then
+        return bitser.loads(data)
+    else
+        return binser.deserialize(data)[1]
+    end
+end
+
+function FILE.read(path)
+    if love.filesystem.getInfo(path) then
+        return FILE.deserialize(love.filesystem.read(path))
+    else
+        error("No file: "..path)
+    end
+end
+
+function FILE.write(path, data)
+    love.filesystem.write(path, FILE.serialize(data))
+end
+
+---@param lib_name 'bitser'|'binser'
+---Init the FILE module with chosen serializer
+return function(lib_name)
+    assert(lib_name == 'bitser' or lib_name == 'binser', '[lib_name] must be "bitser" or "binser"')
+    serializer_used = lib_name
+    _G.FILE = FILE
+end

scene/name_entry.lua

@@ -56,7 +56,7 @@ function NameEntryScene:new()
         self.entry_pos = 3
     end
     if love.filesystem.getInfo(HIscoreFILE) then
-        self.hi_scores = bitser.loadLoveFile(HIscoreFILE)
+        self.hi_scores = FILE.read(HIscoreFILE)
     else
         self.hi_scores = {"TRO",0,"MIT",0,"ROM",0,"ITR",0,"OMI",0}
     end
@@ -150,7 +150,7 @@ function NameEntryScene:onInputPress(e)
             if self.entry_pos == 3 then
                 name = string.lower(self.name_entry[1]..self.name_entry[2]..self.name_entry[3])
                 if love.filesystem.getInfo((SAVE_DIR..name.."_grade_history.sav")) then
-                    grade_history = bitser.loadLoveFile(SAVE_DIR..name.."_grade_history.sav")
+                    grade_history = FILE.read(SAVE_DIR..name.."_grade_history.sav")
                     self.grade = grade_history[1]
                     self.wins = grade_history[2]
                     self.plays = grade_history[4]

settings.lua

@@ -1,7 +1,7 @@
 local bitser = require 'libs.bitser'
 local fs = love.filesystem
 
-local _settings = fs.read(CONFIG_FILE) ~= nil and bitser.loadLoveFile(CONFIG_FILE) or {}
+local _settings = fs.read(CONFIG_FILE) ~= nil and FILE.read(CONFIG_FILE) or {}
 local _defaultSettings = {
     firstTime = true,
 
@@ -37,13 +37,13 @@ SETTINGS = setmetatable(
         __index = function(_, k)
             if _settings[k] == nil then
                 _settings[k] = _defaultSettings[k]
-                bitser.dumpLoveFile(CONFIG_FILE,_settings)
+                FILE.write(CONFIG_FILE,_settings)
             end
             return _settings[k]
         end,
         __newindex = function(_, k, v)
             _settings[k] = v
-            bitser.dumpLoveFile(CONFIG_FILE,_settings)
+            FILE.write(CONFIG_FILE,_settings)
         end
     }
 )