fix table.empty, from auios

.editorconfig

@@ -1,9 +0,0 @@
-root = true
-
-[*]
-indent_style = space
-indent_size = 2
-end_of_line = lf
-charset = utf-8
-trim_trailing_whitespace = true
-insert_final_newline = true

.gitignore

@@ -1 +1,2 @@
-build/
+.*
+!.gitignore

.vscode/settings.json

@@ -1,12 +0,0 @@
-{
-  "Lua.diagnostics.globals": [
-    "_bllua_ts",
-    "_bllua_requiresecure",
-    "_bllua_on_unload"
-  ],
-  "Lua.runtime.version": "Lua 5.1",
-  "Lua.diagnostics.disable": [
-    "lowercase-global",
-    "undefined-global"
-  ]
-}

compile.bat

@@ -1,13 +0,0 @@
-@echo off
-cd /d %~dp0
-
-set "PATH=C:\msys64\mingw32\bin;%PATH%"
-
-if not exist build mkdir build
-
-set buildargs=-Wall -Werror -m32 -shared -Isrc -Iinc/tsfuncs -Iinc/lua -lpsapi -L. -llua5.1 -static-libgcc -static-libstdc++
-
-echo on
-g++ src/bllua4.cpp %buildargs% -o build\BlockLua.dll
-g++ -DBLLUA_UNSAFE src/bllua4.cpp %buildargs% -o build\BlockLua-Unsafe.dll
-@echo off

compiling.md

@@ -1,52 +0,0 @@
-## Compiling on Windows with MSYS2 (32-bit)
-
-Follow these steps to build `BlockLua.dll` for 32-bit Windows using MSYS2's MinGW-w64 i686 toolchain.
-
-### 1) Install MSYS2
-
-- Download and install MSYS2 from `https://www.msys2.org/`.
-- After installing, open the "MSYS2 MSYS" terminal once and update the package database if prompted.
-
-### 2) Install required packages (i686 / 32-bit)
-
-Run this in the "MSYS2 MSYS" or "MSYS2 MinGW 32-bit" terminal:
-
-```bash
-pacman -Sy --needed mingw-w64-i686-toolchain mingw-w64-i686-binutils mingw-w64-i686-lua51
-```
-
-What these packages are for:
-
-- mingw-w64-i686-toolchain: 32-bit C/C++ compiler suite (g++, libstdc++, runtime libs) to build Windows binaries.
-- mingw-w64-i686-binutils: Linker and binary utilities (ld, as, objdump) used by the compiler and for optional inspection.
-- mingw-w64-i686-lua51: Lua 5.1 development files for 32-bit (import library). We use its import library to link; at runtime you can use the provided `lua5.1.dll`.
-
-### 3) Build (PowerShell, recommended)
-
-- Open PowerShell in the repo root.
-- Run the script:
-
-```powershell
-compile.bat
-```
-
-What the script does:
-
-- Temporarily prepends `C:\\msys64\\mingw32\\bin` to PATH so the 32-bit toolchain is used.
-- Compiles the project with `-m32` and links against `lua5.1`.
-- Produces `build\BlockLua.dll` and `build\BlockLua-Unsafe.dll`.
-
-### 4) Optional: Verify 32-bit output
-
-If you installed binutils, you can check the architecture:
-
-```powershell
-objdump -f build\BlockLua.dll | Select-String i386
-```
-
-You should see `architecture: i386` in the output.
-
-### Notes
-
-- Ensure you installed the i686 (32-bit) variants of the packages; x86_64 packages won’t work for a 32-bit build.
-- If the linker cannot find `-llua5.1`, confirm `mingw-w64-i686-lua51` is installed and you are using the `mingw32` toolchain (not `x86_64`).

readme.md

@@ -14,10 +14,10 @@ Lua scripting for Blockland
 ### From TorqueScript
 `'print('hello world')` - Execute Lua in the console by prepending a `'` (single quote)  
 `luaeval("code");` - Execute Lua code  
-`luacall("funcName", %args...);` - Call a Lua global function  
-`luaexec("fileName");` - Execute a Lua file. Path rules are the same as executing .cs files.  
-`luaget("varName");` - Read a Lua global variable  
-`luaset("varName", %value);` - Write a Lua global variable  
+`luacall("funcName", %args...);` - Call a Lua function (supports indexing tables and object methods)  
+`luaexec("fileName");` - Execute a Lua file. Path rules are the same as when executing .cs files, relative paths are allowed.  
+`luaget("varName");` - Read a Lua global variable (supports indexing tables)  
+`luaset("varName", %value);` - Write a Lua global variable (supports indexing tables)  
 
 ### From Lua
 `bl.eval('code')` - Eval TorqueScript code  
@@ -35,7 +35,9 @@ Lua scripting for Blockland
 `object.key = value` - Associate Lua data with a Torque object  
 `object:method(args)` - Call a Torque object method  
 `object[index]` - Access a member of a Torque set or group  
-`for childIndex, child in object:members() do` - Iterate objects within of a Torque set or group. Indices start at 0 like in Torque.
+`for child in object:members() do` - Iterate objects within of a Torque set or group. Indices start at 0 like in Torque.
+`bl.isObject(object, objectID, or 'objectName')` - Check if an object exists  
+`object:exists()` - Check if an object exists  
 
 ### Timing/Schedules
 `sched = bl.schedule(timeMs, function, args...)` - Schedule a Lua function to be called later, similar to schedule in Torque  
@@ -46,15 +48,25 @@ Lua scripting for Blockland
 `for object in bl.boxSearch(vector{centerX,y,z}, vector{sizeX,y,z}, 'objtype'/{'objtypes',...}) do` - Find all objects in the world of the specified type(s) whose bounding box overlaps with the specified box. See the Types section for a list of valid object types.  
 `for object in bl.radiusSearch(vector{centerX,y,z}, radius, 'objtype'/{'objtypes',...}) do` - Find all objects of the specified type(s) whose bounding box overlaps with the specified sphere. See the Types section for a list of valid object types.  
 
+### List of Object Classes (for raycasts and searches)
+`'all'` - Any object  
+`'player'` - Players or bots  
+`'item'` - Items  
+`'vehicle'` - Vehicles  
+`'projectile'` - Projectiles  
+`'brick'` - Bricks with raycasting enabled  
+`'brickalways'` - All bricks including those with raycasting disabled  
+Other types: `'static'`, `'environment'`, `'terrain'`, `'water'`, `'trigger'`, `'marker'`, `'gamebase'`, `'shapebase'`, `'camera'`, `'staticshape'`, `'vehicleblocker'`, `'explosion'`, `'corpse'`, `'debris'`, `'physicalzone'`, `'staticts'`, `'staticrendered'`, `'damagableitem'`  
+
 ### Server-Client Communication
-`bl.addServerCmd('commandName', function(client, args...) yourCode end)` - Register a /command on the server  
-`bl.addClientCmd('commandName', function(args...) yourCode end)` - Register a client command on the client  
-`bl.commandToServer('commandName', args...)` - Execute a server command as a client  
-`bl.commandToClient('commandName', args...)` - As the server, execute a client command on a specific client  
+`bl.addServerCmd('commandName', function(client, args...) ... end)` - Register a /command on the server  
+`bl.addClientCmd('commandName', function(args...) ... end)` - Register a client command on the client  
+`bl.commandToServer('commandName', args...)` - As a client, execute a server command  
+`bl.commandToClient(client, 'commandName', args...)` - As the server, execute a client command on a specific client  
 `bl.commandToAll('commandName', args...)` - As the server, execute a client command on all clients  
 
 ### Packages/Hooks
-`bl.hook('packageName', 'functionName', 'before'/'after', function(args) yourCode end)` - Hook a Torque function with a Lua function.  
+`bl.hook('packageName', 'functionName', 'before'/'after', function(args) ... end)` - Hook a Torque function with a Lua function.  
 `args` is an array containing the arguments provided to the function. If the hook is `before`, these can be modified before being passed to the parent function.  
 If `args._return` is set to anything other than nil by a `before` hook, the parent function will not be called, and the function will simply return that value. Also in this case, any `after` hook will not be executed.  
 In an `after` hook, `args._return` is set to the value returned by the parent function, and can be modified.  
@@ -101,10 +113,11 @@ When reading from outside ZIPs, binary files are fully supported.
 `bl.type('className::funcName', 'type')` - Register the return type of a Torque object method.  
 `bl.class('className')` - Register an existing Torque class to be used from Lua. Already done for all built-in classes.  
 `bl.class('className', 'parentClassName')` - Same as above, with inheritance  
-`bl.boolean(thing)` - Manually convert a Torque boolean (0 or 1) into a Lua boolean.  
-`bl.object(thing)` - Manually convert a Torque object reference (object ID or name) into a Lua object.
+`bl.boolean(arg)` - Manually convert a Torque boolean (0 or 1) into a Lua boolean.  
+`bl.object(arg)` - Manually convert a Torque object reference (object ID or name) into a Lua object.  
+`bl.string(arg)` - Manually convert any automatically-converted Torque value back into a string. This is not as reliable as using `bl.type` to specify the type as a string beforehand.  
 
-### Vectors
+### Vector
 `vec = vector{x,y,z}` - Create a vector. Can have any number of elements  
 `vec1 + vec2` - Add  
 `vec1 - vec2` - Subtract  
@@ -129,15 +142,20 @@ When reading from outside ZIPs, binary files are fully supported.
 `vec1:distance(vec2)` - Distance between two points  
 `vec2 = vec:copy()` - Clone a vector so its elements can be modified without affecting the original. Usually not needed - the builtin vector functions never modify vectors in-place.
 
+### Matrix
+WIP
+
 ### Extended Standard Lua Library
-`string[index]`  
-`string[{start,stop}]`  
+`str[index]`  
+`str[{start,stop}]`  
 `string.split(str, separator='' (splits into chars), noregex=false)`  
 `string.bytes(str)`  
 `string.trim(str, charsToTrim=' \t\r\n')`  
 `table.empty`  
 `table.map(func, ...)`  
+`table.mapk(func, ...)`  
 `table.map_list(func, ...)`  
+`table.mapi_list(func, ...)`  
 `table.swap(tbl)`  
 `table.reverse(list)`  
 `table.islist(list)`  
@@ -163,41 +181,39 @@ When reading from outside ZIPs, binary files are fully supported.
 ## Type Conversion
 When a TorqueScript function is called from Lua or vice-versa, the arguments and return value must be converted between the two languages' type systems.  
 TorqueScript stores no type information; all values in TorqueScript are strings. So it's necessary to make some inferences when converting values between the two languages.  
-### From TorqueScript to Lua
-- Any numeric value becomes a Lua `number`, except as specified with `bl.type`, which may convert a value into a `boolean` or a Torque object container.  
-- The empty string "" becomes `nil`  
-- A string containing three numbers separated by spaces becomes a `vector`  
-- A string containing six numbers separated by spaces becomes a table of two vectors  
-- Any other string is passed directly as a `string`
+
 ### From Lua to TorqueScript
 - `nil` becomes the empty string ""  
 - `true` and `false` become "1" and "0" respectively  
-- Torque containers become their object ID  
+- A Torque object container becomes its object ID  
 - A `vector` becomes a string containing three numbers separated by spaces  
-- A table of two vectors becomes a string containing six numbers separated by spaces  
+- A table of two `vector`s becomes a string containing six numbers separated by spaces  
+- (WIP) A `matrix` is converted into an axis-angle (a "transform"), a string containing seven numbers separated by spaces  
 - Any `string` is passed directly as a string  
 - Tables cannot be passed and will throw an error  
 
+### From TorqueScript to Lua
+- The empty string "" becomes `nil`  
+- Any numeric value becomes a Lua `number`, except as specified with `bl.type`, which may convert a value into a `boolean` or a Torque object container.  
+- A string containing two or three numbers separated by single spaces becomes a `vector`  
+- A string containing six numbers separated by single spaces becomes a table of two vectors, usually defining the corners a bounding box  
+- (WIP) A string containing seven numbers separated by single spaces is treated as an axis-angle (a "transform"), and is converted into a `matrix` representing the translation and rotation  
+- Any other string is passed directly as a `string`  
+  
+For scenarios where the automatic TorqueScript->Lua conversion rules are insufficient or incorrect, use `bl.type`.  
+To convert things by hand, use `bl.object`, `bl.boolean`, or `bl.string`.
+
 ## I/O and Safety
 All Lua code is sandboxed, and file access is confined to the default directories in the same way TorqueScript is.  
 BlockLua also has access to any C libraries installed in the `modules/lualib` folder, so be careful throwing things in there.  
 ### Unsafe Mode
 BlockLua can be built in Unsafe Mode by specifying the `-DBLLUA_UNSAFE` compiler flag. This removes the sandboxing of Lua code, allowing it to access any file and use any library, including ffi.  
-Please do not publish add-ons that require unsafe mode.  
-
-### List of Object Types
-`'all'` - Any object  
-`'player'` - Players or bots  
-`'item'` - Items  
-`'vehicle'` - Vehicles  
-`'projectile'` - Projectiles  
-`'brick'` - Bricks with raycasting enabled  
-`'brickalways'` - All bricks including those with raycasting disabled  
-Other types: `'static'`, `'environment'`, `'terrain'`, `'water'`, `'trigger'`, `'marker'`, `'gamebase'`, `'shapebase'`, `'camera'`, `'staticshape'`, `'vehicleblocker'`, `'explosion'`, `'corpse'`, `'debris'`, `'physicalzone'`, `'staticts'`, `'staticrendered'`, `'damagableitem'`  
+A more limited option is `-DBLLUA_ALLOWFFI`, which allows the use of the `ffi` library. This can still be exploited to grant all the same access as full unsafe mode.  
+Please do not publish add-ons that require either of these.  
 
 ## Compiling
 
 With any *32-bit* variant of GCC installed (such as MinGW or MSYS2), run the following command in the repo directory:  
-`g++ src/bllua4.cpp -o BlockLua.dll -m32 -shared -static-libgcc -Isrc -Iinc/tsfuncs -Iinc/lua -lpsapi -L. -llua5.1 src/bllua`  
+`g++ src/bllua4.cpp -o BlockLua.dll -m32 -shared -static-libgcc -Isrc -Iinc/tsfuncs -Iinc/lua -lpsapi -L. -llua5.1`  
   
 LuaJIT (lua5.1.dll) can be obtained from https://luajit.org/  

src/bllua4.cpp

@@ -1,4 +1,4 @@
-// BlockLua (bllua4): Simple Lua interface for TorqueScript
+// BlockLua (bllua4): Advanced Lua interface for TorqueScript
 
 // Includes
 
@@ -28,6 +28,7 @@ INCLUDE_BIN(bll_fileLuaEnv    , "lua-env.lua");
 INCLUDE_BIN(bll_fileTsEnv     , "ts-env.cs" );
 INCLUDE_BIN(bll_fileLuaStd        , "util/std.lua");
 INCLUDE_BIN(bll_fileLuaVector     , "util/vector.lua");
+INCLUDE_BIN(bll_fileLuaMatrix     , "util/matrix.lua");
 INCLUDE_BIN(bll_fileLuaLibts      , "util/libts-lua.lua");
 INCLUDE_BIN(bll_fileTsLibts       , "util/libts-ts.cs");
 INCLUDE_BIN(bll_fileLuaLibbl      , "util/libbl.lua" );
@@ -56,21 +57,26 @@ bool init() {
 	
 	// Set up Lua environment
 	BLL_LOAD_LUA(gL, bll_fileLuaEnv);
+	#ifdef BLLUA_ALLOWFFI
+		lua_pushboolean(gL, true);
+		lua_setglobal(gL, "_bllua_allowffi");
+	#endif
 	#ifndef BLLUA_UNSAFE
 		BLL_LOAD_LUA(gL, bll_fileLuaEnvSafe);
 	#endif
 	
+	// Load utilities in Lua
+	BLL_LOAD_LUA(gL, bll_fileLuaStd);
+	BLL_LOAD_LUA(gL, bll_fileLuaVector);
+	BLL_LOAD_LUA(gL, bll_fileLuaMatrix);
+	BLL_LOAD_LUA(gL, bll_fileLuaLibts);
+	BLL_LOAD_LUA(gL, bll_fileLuaLibbl);
+	BLL_LOAD_LUA(gL, bll_fileLuaLibblTypes);
+	
 	// Expose Lua API to TS
 	BlAddFunction(NULL, NULL, "_bllua_luacall", bll_ts_luacall, "LuaCall(name, ...) - Call Lua function and return result", 2, 20);
 	BlEval(bll_fileTsEnv);
-	
-	// Load utilities
-	BLL_LOAD_LUA(gL, bll_fileLuaStd);
-	BLL_LOAD_LUA(gL, bll_fileLuaVector);
-	BLL_LOAD_LUA(gL, bll_fileLuaLibts);
 	BlEval(bll_fileTsLibts);
-	BLL_LOAD_LUA(gL, bll_fileLuaLibbl);
-	BLL_LOAD_LUA(gL, bll_fileLuaLibblTypes);
 	BlEval(bll_fileTsLibblSupport);
 	BlEval(bll_fileLoadaddons);
 	
@@ -83,8 +89,7 @@ bool init() {
 bool deinit() {
 	BlPrintf("BlockLua: Unloading");
 	
-	BlEval("deactivatePackage(_bllua_main);");
-	BlEval("$_bllua_active = 0;");
+	BlEval("$_bllua_active=0;deactivatePackage(_bllua_main);");
 	bll_LuaEval(gL, "for _,f in pairs(_bllua_on_unload) do f() end");
 	
 	lua_close(gL);

src/lua-env-safe.lua

@@ -4,9 +4,7 @@
 
 
 -- Utility: Convert a list of strings into a map of string->true
-local function tmap(t)
-  local u = {}; for _, n in ipairs(t) do u[n] = true end; return u;
-end
+local function tmap(t) local u = {}; for _, n in ipairs(t) do u[n] = true end; return u; end
 
 -- Save banned global variables for wrapping with safe functions
 local old_io = io
@@ -14,102 +12,100 @@ local old_require = require
 local old_os = os
 local old_debug = debug
 local old_package = package
+local old_allowffi = _bllua_allowffi
 
 -- Remove all global variables except a whitelist
 local ok_names = tmap {
-  '_G', '_bllua_ts', '_bllua_on_unload', '_bllua_on_error',
-  'string', 'table', 'math', 'coroutine', 'bit',
-  'pairs', 'ipairs', 'next', 'unpack', 'select',
-  'error', 'assert', 'pcall', 'xpcall',
-  'type', 'tostring', 'tonumber',
-  'loadstring',
-  'getmetatable', 'setmetatable',
-  'rawget', 'rawset', 'rawequal', 'rawlen',
-  'module', '_VERSION',
+	'_G', '_bllua_ts', '_bllua_on_unload', '_bllua_on_error',
+	'string', 'table', 'math', 'coroutine', 'bit',
+	'pairs', 'ipairs', 'next', 'unpack', 'select',
+	'error', 'assert', 'pcall', 'xpcall',
+	'type', 'tostring', 'tonumber',
+	'loadstring',
+	'getmetatable', 'setmetatable',
+	'rawget', 'rawset', 'rawequal', 'rawlen',
+	'module', '_VERSION',
 }
 local not_ok_names = {}
 for n, _ in pairs(_G) do
-  if not ok_names[n] then
-    table.insert(not_ok_names, n)
-  end
+	if not ok_names[n] then
+		table.insert(not_ok_names, n)
+	end
 end
 for _, n in ipairs(not_ok_names) do
-  _G[n] = nil
+	_G[n] = nil
 end
 
 -- Sanitize file paths to point only to allowed files within the game directory
 -- List of allowed directories for reading/writing
+-- modules/lualib is also allowed as read-only
 local allowed_dirs = tmap {
-  'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
-}
--- List of allowed directories for reading only
-local allowed_dirs_readonly = tmap {
-  'lualib'
+	'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
 }
 -- List of disallowed file extensions - basically executable file extensions
 -- Note that even without this protection, exploiting would still require somehow
 --   getting a file within the allowed directories to autorun,
 --   so this is just a precaution.
 local disallowed_exts = tmap {
-  -- windows
-  'bat', 'bin', 'cab', 'cmd', 'com', 'cpl', 'ex_', 'exe', 'gadget', 'inf', 'ins', 'inx', 'isu',
-  'job', 'jse', 'lnk', 'msc', 'msi', 'msp', 'mst', 'paf', 'pif', 'ps1', 'reg', 'rgs', 'scr',
-  'sct', 'shb', 'shs', 'u3p', 'vb', 'vbe', 'vbs', 'vbscript', 'ws', 'wsf', 'wsh',
-  -- linux
-  'csh', 'ksh', 'out', 'run', 'sh',
-  -- mac/other
-  'action', 'apk', 'app', 'command', 'ipa', 'osx', 'prg', 'workflow',
+	-- windows
+	'bat','bin','cab','cmd','com','cpl','ex_','exe','gadget','inf','ins','inx','isu',
+	'job','jse','lnk','msc','msi','msp','mst','paf','pif','ps1','reg','rgs','scr',
+	'sct','shb','shs','u3p','vb','vbe','vbs','vbscript','ws','wsf','wsh',
+	-- linux
+	'csh','ksh','out','run','sh',
+	-- mac/other
+	'action','apk','app','command','ipa','osx','prg','workflow',
 }
 -- Arguments: file name (relative to game directory), boolean true if only reading
 -- Return: clean file path if allowed (or nil if disallowed),
 --         error string (or nil if allowed)
 local function safe_path(fn, readonly)
-  fn = fn:gsub('\\', '/')
-  fn = fn:gsub('^ +', '')
-  fn = fn:gsub(' +$', '')
-  -- whitelist characters
-  local ic = fn:find('[^a-zA-Z0-9_%-/ %.]')
-  if ic then
-    return nil, 'Filename \'' .. fn .. '\' contains invalid character \'' ..
-        fn:sub(ic, ic) .. '\' at position ' .. ic
-  end
-  -- disallow up-dirs, absolute paths, and relative paths
-  -- './' and '../' are possible in scripts, because they're processed into
-  -- absolute paths in util.lua before reaching here
-  if fn:find('^%.') or fn:find('%.%.') or fn:find(':') or fn:find('^/') then
-    return nil, 'Filename \'' .. fn .. '\' contains invalid sequence'
-  end
-  -- allow only whitelisted dirs
-  local dir = fn:match('^([^/]+)/')
-  if (not dir) or (
-        (not allowed_dirs[dir:lower()]) and
-        ((not readonly) or (not allowed_dirs_readonly[dir:lower()]))) then
-    return nil, 'filename is in disallowed directory ' .. (dir or 'nil')
-  end
-  -- disallow blacklisted extensions or no extension
-  local ext = fn:match('%.([^/%.]+)$')
-  if (not ext) or (disallowed_exts[ext:lower()]) then
-    return nil, 'Filename \'' .. fn .. '\' has disallowed extension \'' ..
-        (ext or '') .. '\''
-  end
-  return fn, nil
+	fn = fn:gsub('\\', '/')
+	fn = fn:gsub('^ +', '')
+	fn = fn:gsub(' +$', '')
+	-- whitelist characters
+	local ic = fn:find('[^a-zA-Z0-9_%-/ %.]')
+	if ic then
+		return nil, 'Filename \''..fn..'\' contains invalid character \''..
+			fn:sub(ic, ic)..'\' at position '..ic
+	end
+	-- disallow up-dirs, absolute paths, and relative paths
+	-- './' and '../' are possible in scripts, because they're processed into
+	-- absolute paths in util.lua before reaching here
+	if fn:find('^%.') or fn:find('%.%.') or fn:find(':') or fn:find('^/') then
+		return nil, 'Filename \''..fn..'\' contains invalid sequence'
+	end
+	-- allow only whitelisted dirs
+	local dir = fn:match('^([^/]+)/')
+	if not (dir and (
+		allowed_dirs[dir:lower()] or
+		( readonly and fn:find('^modules/lualib/') ) ))
+	then
+		return nil, 'File is in disallowed directory '..(dir or 'nil')
+	end
+	-- disallow blacklisted extensions
+	local ext = fn:match('%.([^/%.]+)$')
+	if ext and disallowed_exts[ext:lower()] then
+		return nil, 'Filename \''..fn..'\' has disallowed extension \''..
+			(ext or '')..'\''
+	end
+	return fn, nil
 end
 
 -- Wrap io.open with path sanitization
 function _bllua_io_open(fn, md)
-  md = md or 'r'
-  local readonly = md == 'r' or md == 'rb'
-  local fns, err = safe_path(fn, readonly)
-  if fns then
-    return old_io.open(fns, md)
-  else
-    return nil, err
-  end
+	md = md or 'r'
+	local readonly = md=='r' or md=='rb'
+	local fns, err = safe_path(fn, readonly)
+	if fns then
+		return old_io.open(fns, md)
+	else
+		return nil, err
+	end
 end
-
 -- Allow io.type (works on file handles returned by io.open)
 function _bllua_io_type(f)
-  return old_io.type(f)
+	return old_io.type(f)
 end
 
 -- Wrap require with a blacklist for unsafe built-in modules
@@ -117,30 +113,31 @@ end
 -- Note that util.lua wraps this and provides 'require',
 --   only falling back here if the package is not found in user files
 local disallowed_packages = tmap {
-  'ffi', 'debug', 'package', 'io', 'os',
-  '_bllua_ts',
+	'ffi', 'debug', 'package', 'io', 'os',
+	'_bllua_ts',
 }
+if old_allowffi then disallowed_packages['ffi'] = nil end
 function _bllua_requiresecure(name)
-  if name:find('[^a-zA-Z0-9_%-%.]') or name:find('%.%.') or
-      name:find('^%.') or name:find('%.$') then
-    error('require: package name contains invalid character', 3)
-  elseif disallowed_packages[name] then
-    error('require: attempt to require disallowed module \'' .. name .. '\'', 3)
-  else
-    -- todo: reimplement require to not use package.* stuff?
-    return old_require(name)
-  end
+	if name:find('[^a-zA-Z0-9_%-%.]') or name:find('%.%.') or
+		name:find('^%.') or name:find('%.$') then
+		error('require: package name contains invalid character', 3)
+	elseif disallowed_packages[name] then
+		error('require: attempt to require disallowed module \''..name..'\'', 3)
+	else
+		-- todo: reimplement require to not use package.* stuff?
+		return old_require(name)
+	end
 end
-
 package = {
-  seeall = old_package.seeall,
+	seeall = old_package.seeall,
 }
 
 -- Provide limited debug
 debug = {
-  traceback = old_debug.traceback,
-  getinfo = old_debug.getinfo,
-  getfilename = old_debug.getfilename, -- defined in lua.env.lua
+	traceback = old_debug.traceback,
+	getinfo = old_debug.getinfo,
+	getfilename = old_debug.getfilename, -- defined in lua.env.lua
 }
 
-_bllua_ts.echo('  Executed bllua-env-safe.lua')
+print = _bllua_ts.echo
+print('  Executed bllua-env-safe.lua')

src/lua-env.lua

@@ -9,32 +9,37 @@ _bllua_on_unload = {}
 
 -- Utility for getting the current filename
 function debug.getfilename(level)
-  if type(level) == 'number' then level = level + 1 end
-  local info = debug.getinfo(level)
-  if not info then return nil end
-  local filename = info.source:match('^%-%-%[%[([^%]]+)%]%]')
-  return filename
+	if type(level) == 'number' then level = level+1 end
+	local info = debug.getinfo(level)
+	if not info then return nil end
+	local filename = info.source:match('^%-%-%[%[([^%]]+)%]%]')
+	return filename
 end
 
 -- Called when pcall fails on a ts->lua call, used to print detailed error info
 function _bllua_on_error(err)
-  err = err:match(': (.+)$') or err
-  local tracelines = { err }
-  local level = 2
-  while true do
-    local info = debug.getinfo(level)
-    if not info then break end
-    local filename = debug.getfilename(level) or info.short_src
-    local funcname = info.name
-    if funcname == 'dofile' then break end
-    table.insert(tracelines, string.format('%s:%s in function \'%s\'',
-      filename,
-      info.currentline == -1 and '' or info.currentline .. ':',
-      funcname
-    ))
-    level = level + 1
-  end
-  return table.concat(tracelines, '\n')
+	err = err:match(': (.+)$') or err
+	local tracelines = {err}
+	local level = 2
+	while true do
+		local info = debug.getinfo(level)
+		if not info then break end
+		local filename = debug.getfilename(level) or info.short_src
+		local funcname = info.name
+		if funcname=='dofile' then break end
+		table.insert(tracelines, string.format('%s:%s in function \'%s\'',
+			filename,
+			info.currentline==-1 and '' or info.currentline..':',
+			funcname
+		))
+		level = level+1
+	end
+	return table.concat(tracelines, '\n')
 end
 
-_bllua_ts.echo('  Executed bllua-env.lua')
+-- overridden in lua-env-safe.lua (executed if not BLLUA_UNSAFE)
+_bllua_io_open = io.open
+_bllua_requiresecure = require
+
+print = _bllua_ts.echo
+print('  Executed bllua-env.lua')

src/util/libbl-support.cs

@@ -42,4 +42,26 @@ package _bllua_objectDeletionHook {
 };
 activatePackage(_bllua_objectDeletionHook);
 
+// Public Lua library for TS
+function luacall(%func, %a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p) {
+	if($_bllua_active)
+		return _bllua_luacall("_bllua_call", %func, %a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p);
+}
+function luaexec(%fn) {
+	if($_bllua_active)
+		return _bllua_luacall("_bllua_exec", %fn);
+}
+function luaeval(%code) {
+	if($_bllua_active)
+		return _bllua_luacall("_bllua_eval", %code);
+}
+function luaget(%name) {
+	if($_bllua_active)
+		return _bllua_luacall("_bllua_getvar", %name);
+}
+function luaset(%name, %val) {
+	if($_bllua_active)
+		_bllua_luacall("_bllua_setvar", %name, %val);
+}
+
 echo("  Executed libbl-support.cs");

src/util/libbl-types.lua

@@ -4,129 +4,129 @@
 
 -- Class hierarchy, adapted from https://notabug.org/Queuenard/blockland-DLL-tools/src/master/class_hierarchy
 bl.class('SimObject')
-bl.class('ScriptObject', 'SimObject')
-bl.class('SimSet', 'SimObject')
-bl.class('SimGroup', 'SimSet')
-bl.class('GuiControl', 'SimGroup')
-bl.class('GuiTextCtrl', 'GuiControl')
-bl.class('GuiSwatchCtrl', 'GuiControl')
-bl.class('GuiButtonBaseCtrl', 'GuiControl')
-bl.class('GuiArrayCtrl', 'GuiControl')
-bl.class('GuiScrollCtrl', 'GuiControl')
-bl.class('GuiMouseEventCtrl', 'GuiControl')
-bl.class('GuiProgressCtrl', 'GuiControl')
-bl.class('GuiSliderCtrl', 'GuiControl')
-bl.class('GuiConsoleTextCtrl', 'GuiControl')
-bl.class('GuiTSCtrl', 'GuiControl')
-bl.class('GuiObjectView', 'GuiTSCtrl')
-bl.class('GameTSCtrl', 'GuiTSCtrl')
-bl.class('EditTSCtrl', 'GuiTSCtrl')
-bl.class('GuiPlayerView', 'GuiTSCtrl')
-bl.class('GuiShapeNameHud', 'GuiControl')
-bl.class('GuiHealthBarHud', 'GuiControl')
-bl.class('GuiGraphCtrl', 'GuiControl')
-bl.class('GuiInspector', 'GuiControl')
-bl.class('GuiChunkedBitmapCtrl', 'GuiControl')
-bl.class('GuiInputCtrl', 'GuiControl')
-bl.class('GuiNoMouseCtrl', 'GuiControl')
-bl.class('GuiBitmapBorderCtrl', 'GuiControl')
-bl.class('GuiBackgroundCtrl', 'GuiControl')
-bl.class('GuiEditorRuler', 'GuiControl')
-bl.class('GuiClockHud', 'GuiControl')
-bl.class('GuiEditCtrl', 'GuiControl')
-bl.class('GuiFilterCtrl', 'GuiControl')
-bl.class('GuiFrameSetCtrl', 'GuiControl')
-bl.class('GuiMenuBar', 'GuiControl')
-bl.class('GuiMessageVectorCtrl', 'GuiControl')
-bl.class('GuiBitmapCtrl', 'GuiControl')
-bl.class('GuiCrossHairHud', 'GuiBitmapCtrl')
-bl.class('ScriptGroup', 'SimGroup')
-bl.class('NetConnection', 'SimGroup')
-bl.class('GameConnection', 'NetConnection')
-bl.class('Path', 'SimGroup')
-bl.class('TCPObject', 'SimObject')
-bl.class('SOCKObject', 'TCPObject')
-bl.class('HTTPObject', 'TCPObject')
-bl.class('SimDataBlock', 'SimObject')
-bl.class('AudioEnvironment', 'SimDataBlock')
-bl.class('AudioSampleEnvironment', 'SimDataBlock')
-bl.class('AudioDescription', 'SimDataBlock')
-bl.class('GameBaseData', 'SimDataBlock')
-bl.class('ShapeBaseData', 'GameBaseData')
-bl.class('CameraData', 'ShapeBaseData')
-bl.class('ItemData', 'ShapeBaseData')
-bl.class('MissionMarkerData', 'ShapeBaseData')
-bl.class('PathCameraData', 'ShapeBaseData')
-bl.class('PlayerData', 'ShapeBaseData')
-bl.class('StaticShapeData', 'ShapeBaseData')
-bl.class('VehicleData', 'ShapeBaseData')
-bl.class('FlyingVehicleData', 'VehicleData')
-bl.class('WheeledVehicleData', 'VehicleData')
-bl.class('DebrisData', 'GameBaseData')
-bl.class('ProjectileData', 'GameBaseData')
-bl.class('ShapeBaseImageData', 'GameBaseData')
-bl.class('TriggerData', 'GameBaseData')
-bl.class('ExplosionData', 'GameBaseData')
-bl.class('fxLightData', 'GameBaseData')
-bl.class('LightningData', 'GameBaseData')
-bl.class('ParticleEmitterNodeData', 'GameBaseData')
-bl.class('SplashData', 'GameBaseData')
-bl.class('fxDTSBrickData', 'GameBaseData')
-bl.class('ParticleEmitterData', 'GameBaseData')
-bl.class('WheeledVehicleTire', 'SimDataBlock')
-bl.class('WheeledVehicleSpring', 'SimDataBlock')
-bl.class('TSShapeConstructor', 'SimDataBlock')
-bl.class('AudioProfile', 'SimDataBlock')
-bl.class('ParticleData', 'SimDataBlock')
-bl.class('MaterialPropertyMap', 'SimObject')
-bl.class('NetObject', 'SimObject')
-bl.class('SceneObject', 'NetObject')
-bl.class('GameBase', 'SceneObject')
-bl.class('ShapeBase', 'GameBase')
-bl.class('MissionMarker', 'ShapeBase')
-bl.class('SpawnSphere', 'MissionMarker')
-bl.class('VehicleSpawnMarker', 'MissionMarker')
-bl.class('Waypoint', 'MissionMarker')
-bl.class('StaticShape', 'ShapeBase')
-bl.class('ScopeAlwaysShape', 'StaticShape')
-bl.class('Player', 'ShapeBase')
-bl.class('AIPlayer', 'Player')
-bl.class('Camera', 'ShapeBase')
-bl.class('Item', 'ShapeBase')
-bl.class('PathCamera', 'ShapeBase')
-bl.class('Vehicle', 'ShapeBase')
-bl.class('FlyingVehicle', 'Vehicle')
-bl.class('WheeledVehicle', 'Vehicle')
-bl.class('Explosion', 'GameBase')
-bl.class('Splash', 'GameBase')
-bl.class('Debris', 'GameBase')
-bl.class('Projectile', 'GameBase')
-bl.class('Trigger', 'GameBase')
-bl.class('fxLight', 'GameBase')
-bl.class('Lightning', 'GameBase')
-bl.class('ParticleEmitterNode', 'GameBase')
-bl.class('ParticleEmitter', 'GameBase')
-bl.class('Precipitation', 'GameBase')
-bl.class('TSStatic', 'SceneObject')
-bl.class('VehicleBlocker', 'SceneObject')
-bl.class('Marker', 'SceneObject')
-bl.class('AudioEmitter', 'SceneObject')
-bl.class('PhysicalZone', 'SceneObject')
-bl.class('fxDayCycle', 'SceneObject')
-bl.class('fxDTSBrick', 'SceneObject')
-bl.class('fxPlane', 'SceneObject')
-bl.class('fxSunLight', 'SceneObject')
-bl.class('Sky', 'SceneObject')
-bl.class('SceneRoot', 'SceneObject')
-bl.class('Sun', 'NetObject')
-bl.class('GuiCursor', 'SimObject')
-bl.class('ConsoleLogger', 'SimObject')
-bl.class('QuotaObject', 'SimObject')
-bl.class('FileObject', 'SimObject')
-bl.class('BanList', 'SimObject')
-bl.class('GuiControlProfile', 'SimObject')
-bl.class('MessageVector', 'SimObject')
-bl.class('ActionMap', 'SimObject')
+	bl.class('ScriptObject', 'SimObject')
+	bl.class('SimSet', 'SimObject')
+		bl.class('SimGroup', 'SimSet')
+			bl.class('GuiControl', 'SimGroup')
+				bl.class('GuiTextCtrl'         , 'GuiControl')
+				bl.class('GuiSwatchCtrl'       , 'GuiControl')
+				bl.class('GuiButtonBaseCtrl'   , 'GuiControl')
+				bl.class('GuiArrayCtrl'        , 'GuiControl')
+				bl.class('GuiScrollCtrl'       , 'GuiControl')
+				bl.class('GuiMouseEventCtrl'   , 'GuiControl')
+				bl.class('GuiProgressCtrl'     , 'GuiControl')
+				bl.class('GuiSliderCtrl'       , 'GuiControl')
+				bl.class('GuiConsoleTextCtrl'  , 'GuiControl')
+				bl.class('GuiTSCtrl'           , 'GuiControl')
+					bl.class('GuiObjectView', 'GuiTSCtrl')
+					bl.class('GameTSCtrl'   , 'GuiTSCtrl')
+					bl.class('EditTSCtrl'   , 'GuiTSCtrl')
+					bl.class('GuiPlayerView', 'GuiTSCtrl')
+				bl.class('GuiShapeNameHud'     , 'GuiControl')
+				bl.class('GuiHealthBarHud'     , 'GuiControl')
+				bl.class('GuiGraphCtrl'        , 'GuiControl')
+				bl.class('GuiInspector'        , 'GuiControl')
+				bl.class('GuiChunkedBitmapCtrl', 'GuiControl')
+				bl.class('GuiInputCtrl'        , 'GuiControl')
+				bl.class('GuiNoMouseCtrl'      , 'GuiControl')
+				bl.class('GuiBitmapBorderCtrl' , 'GuiControl')
+				bl.class('GuiBackgroundCtrl'   , 'GuiControl')
+				bl.class('GuiEditorRuler'      , 'GuiControl')
+				bl.class('GuiClockHud'         , 'GuiControl')
+				bl.class('GuiEditCtrl'         , 'GuiControl')
+				bl.class('GuiFilterCtrl'       , 'GuiControl')
+				bl.class('GuiFrameSetCtrl'     , 'GuiControl')
+				bl.class('GuiMenuBar'          , 'GuiControl')
+				bl.class('GuiMessageVectorCtrl', 'GuiControl')
+				bl.class('GuiBitmapCtrl'       , 'GuiControl')
+					bl.class('GuiCrossHairHud', 'GuiBitmapCtrl')
+			bl.class('ScriptGroup', 'SimGroup')
+			bl.class('NetConnection', 'SimGroup')
+				bl.class('GameConnection', 'NetConnection')
+			bl.class('Path', 'SimGroup')
+	bl.class('TCPObject', 'SimObject')
+		bl.class('SOCKObject', 'TCPObject')
+		bl.class('HTTPObject', 'TCPObject')
+	bl.class('SimDataBlock', 'SimObject')
+		bl.class('AudioEnvironment'      , 'SimDataBlock')
+		bl.class('AudioSampleEnvironment', 'SimDataBlock')
+		bl.class('AudioDescription'      , 'SimDataBlock')
+		bl.class('GameBaseData'          , 'SimDataBlock')
+			bl.class('ShapeBaseData'          , 'GameBaseData')
+				bl.class('CameraData'       , 'ShapeBaseData')
+				bl.class('ItemData'         , 'ShapeBaseData')
+				bl.class('MissionMarkerData', 'ShapeBaseData')
+				bl.class('PathCameraData'   , 'ShapeBaseData')
+				bl.class('PlayerData'       , 'ShapeBaseData')
+				bl.class('StaticShapeData'  , 'ShapeBaseData')
+				bl.class('VehicleData'      , 'ShapeBaseData')
+					bl.class('FlyingVehicleData' , 'VehicleData')
+					bl.class('WheeledVehicleData', 'VehicleData')
+			bl.class('DebrisData'             , 'GameBaseData')
+			bl.class('ProjectileData'         , 'GameBaseData')
+			bl.class('ShapeBaseImageData'     , 'GameBaseData')
+			bl.class('TriggerData'            , 'GameBaseData')
+			bl.class('ExplosionData'          , 'GameBaseData')
+			bl.class('fxLightData'            , 'GameBaseData')
+			bl.class('LightningData'          , 'GameBaseData')
+			bl.class('ParticleEmitterNodeData', 'GameBaseData')
+			bl.class('SplashData'             , 'GameBaseData')
+			bl.class('fxDTSBrickData'         , 'GameBaseData')
+			bl.class('ParticleEmitterData'    , 'GameBaseData')
+		bl.class('WheeledVehicleTire'    , 'SimDataBlock')
+		bl.class('WheeledVehicleSpring'  , 'SimDataBlock')
+		bl.class('TSShapeConstructor'    , 'SimDataBlock')
+		bl.class('AudioProfile'          , 'SimDataBlock')
+		bl.class('ParticleData'          , 'SimDataBlock')
+	bl.class('MaterialPropertyMap', 'SimObject')
+	bl.class('NetObject', 'SimObject')
+		bl.class('SceneObject', 'NetObject')
+			bl.class('GameBase', 'SceneObject')
+				bl.class('ShapeBase', 'GameBase')
+					bl.class('MissionMarker', 'ShapeBase')
+						bl.class('SpawnSphere'       , 'MissionMarker')
+						bl.class('VehicleSpawnMarker', 'MissionMarker')
+						bl.class('Waypoint'          , 'MissionMarker')
+					bl.class('StaticShape'  , 'ShapeBase')
+						bl.class('ScopeAlwaysShape', 'StaticShape')
+					bl.class('Player'       , 'ShapeBase')
+						bl.class('AIPlayer', 'Player')
+					bl.class('Camera'       , 'ShapeBase')
+					bl.class('Item'         , 'ShapeBase')
+					bl.class('PathCamera'   , 'ShapeBase')
+					bl.class('Vehicle'      , 'ShapeBase')
+						bl.class('FlyingVehicle' , 'Vehicle')
+						bl.class('WheeledVehicle', 'Vehicle')
+				bl.class('Explosion'          , 'GameBase')
+				bl.class('Splash'             , 'GameBase')
+				bl.class('Debris'             , 'GameBase')
+				bl.class('Projectile'         , 'GameBase')
+				bl.class('Trigger'            , 'GameBase')
+				bl.class('fxLight'            , 'GameBase')
+				bl.class('Lightning'          , 'GameBase')
+				bl.class('ParticleEmitterNode', 'GameBase')
+				bl.class('ParticleEmitter'    , 'GameBase')
+				bl.class('Precipitation'      , 'GameBase')
+			bl.class('TSStatic'      , 'SceneObject')
+			bl.class('VehicleBlocker', 'SceneObject')
+			bl.class('Marker'        , 'SceneObject')
+			bl.class('AudioEmitter'  , 'SceneObject')
+			bl.class('PhysicalZone'  , 'SceneObject')
+			bl.class('fxDayCycle'    , 'SceneObject')
+			bl.class('fxDTSBrick'    , 'SceneObject')
+			bl.class('fxPlane'       , 'SceneObject')
+			bl.class('fxSunLight'    , 'SceneObject')
+			bl.class('Sky'           , 'SceneObject')
+			bl.class('SceneRoot'     , 'SceneObject')
+		bl.class('Sun', 'NetObject')
+	bl.class('GuiCursor', 'SimObject')
+	bl.class('ConsoleLogger'    , 'SimObject')
+	bl.class('QuotaObject'      , 'SimObject')
+	bl.class('FileObject'       , 'SimObject')
+	bl.class('BanList'          , 'SimObject')
+	bl.class('GuiControlProfile', 'SimObject')
+	bl.class('MessageVector'    , 'SimObject')
+	bl.class('ActionMap'        , 'SimObject')
 
 -- Auto-generated from game scripts
 bl.type('ActionMap::blockBind:1', 'object')

src/util/libbl.lua

@@ -2,23 +2,36 @@
 -- Main lua-side functionality of bllua,
 -- provided through the global table 'bl.'
 
--- todo: set
-
 local _bllua_ts = ts
 
 bl = bl or {}
 
+-- Config
+local tsMaxArgs = 16
+local tsArgsLocal = '%a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p'
+local tsArgsGlobal = 
+	'$_bllua_hook_arg1,$_bllua_hook_arg2,$_bllua_hook_arg3,$_bllua_hook_arg4,'..
+	'$_bllua_hook_arg5,$_bllua_hook_arg6,$_bllua_hook_arg7,$_bllua_hook_arg8,'..
+	'$_bllua_hook_arg9,$_bllua_hook_arg10,$_bllua_hook_arg11,$_bllua_hook_arg12,'..
+	'$_bllua_hook_arg13,$_bllua_hook_arg14,$_bllua_hook_arg15,$_bllua_hook_arg16'
+
 -- Misc
--- Apply a function to each element in a list, building a new list from the returns
-local function map(t,f)
-	local u = {}
-	for i,v in ipairs(t) do
-		u[i] = f(v)
+local function ipairsNilable(t)
+	local maxk = 0
+	for k,_ in pairs(t) do
+		if k>maxk then maxk = k end
+	end
+	local i = 0
+	return function()
+		i = i+1
+		if i>maxk then return nil
+		else return i, t[i] end
 	end
-	return u
 end
+
+-- Validation
 local function isValidFuncName(name)
-	return type(name)=='string' and name:find('^[a-zA-Z0-9_]+$')
+	return type(name)=='string' and name:find('^[a-zA-Z_][a-zA-Z0-9_]*$')
 end
 local function isValidFuncNameNs(name)
 	return type(name)=='string' and (
@@ -76,7 +89,7 @@ for k,v in pairs(tsTypesByName) do
 	tsTypesByNum[v] = k
 end
 
--- Type conversion
+-- Type conversion from Lua to TS
 local toTsObject
 -- Convert a string from TS into a boolean
 -- Note: Nonempty nonnumeric strings evaluate to 1, unlike in TS
@@ -100,35 +113,77 @@ local function valToTs(val)
 			-- box - > 6 numbers
 			return table.concat(val[1], ' ')..' '..table.concat(val[2], ' ')
 		else
-			error('valToTs: could not convert table', 3)
+			error('valToTs: cannot pass Lua tables to TorqueScript.', 3)
 		end
 	else
-		error('valToTs: could not convert '..type(val), 3)
+		error('valToTs: could not convert value to TorqueScript: '..tostring(val), 3)
 	end
 end
+
+-- Type conversion from TS to Lua
 local fromTsForceTypes = {
-	['boolean'] = tsBool,
-	['object'] = function(val) toTsObject(val) end, -- toTsObject not defined yet
-	['string'] = tostring,
+	['boolean'] = function(val) return tsBool(val) end,
+	['object'] = function(val) return toTsObject(val) end, -- wrap because toTsObject not defined yet
+	['string'] = function(val) return val end,
 }
-local function convertValFromTs(val, typ)
-	return fromTsForceTypes[typ](val) or
-		error('valFromTs: invalid force type '..typ, 4)
+local function forceValFromTs(val, typ)
+	local func = fromTsForceTypes[typ]
+	if not func then error('valFromTs: invalid force type \''..typ..'\'', 4) end
+	return func(val)
+end
+local function vectorFromTs(val)
+	local xS,yS,zS = val:match('^(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+)$')
+	if xS then return vector{tonumber(xS),tonumber(yS),tonumber(zS)}
+	else return nil end
+end
+local function boxFromTs(val)
+	local x1S,y1S,z1S,x2S,y2S,z2S = val:match(
+		'^(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+) '..
+		'(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+)$')
+	if x1S then return {
+		vector{tonumber(x1S),tonumber(y1S),tonumber(z1S)},
+		vector{tonumber(x2S),tonumber(y2S),tonumber(z2S)} }
+	else return nil end
+end
+local function multinumericFromTs(val)
+	local tsNumPat = '%-?[0-9]+%.?[0-9]*e?[0-9]*'
+	if val:find('^'..tsNumPat) then
+		local nums = {}
+		for _,part in ipairs(val:split(' ')) do
+			if part:find('^'..tsNumPat..'$') then
+				table.insert(nums, tonumber(part))
+			else
+				return nil
+			end
+		end
+		if #nums==2 or #nums==3 then
+			return vector(nums)
+		elseif #nums==6 then -- box
+			return {
+				vector{nums[1], nums[2], nums[3]},
+				vector{nums[4], nums[5], nums[6]} }
+		elseif #nums==7 then -- axis
+			return nil --return matrix(nums)
+		else
+			return nil
+		end
+	end
 end
 bl._forceType = bl._forceType or {}
-local function valFromTs(val, name, name2) -- todo: ensure name and name2 are already lowercase
+-- todo: ensure name and name2 are already lowercase
+local function valFromTs(val, name, name2)
 	if type(val)~='string' then
 		error('valFromTs: expected string, got '..type(val), 3) end
 	if name then
 		name = name:lower()
 		if bl._forceType[name] then
-			return convertValFromTs(val, bl._forceType[name])
+			return forceValFromTs(val, bl._forceType[name])
 		end
 	end
 	if name2 then
 		name2 = name2:lower()
 		if bl._forceType[name2] then
-			return convertValFromTs(val, bl._forceType[name2])
+			return forceValFromTs(val, bl._forceType[name2])
 		end
 	end
 	-- '' -> nil
@@ -136,28 +191,29 @@ local function valFromTs(val, name, name2) -- todo: ensure name and name2 are al
 	-- number
 	local num = tonumber(val)
 	if num then return num end
-	-- vector
-	local xS,yS,zS = val:match('^(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+)$')
-	if xS then return vector{tonumber(xS),tonumber(yS),tonumber(zS)} end
-	local x1S,y1S,z1S,x2S,y2S,z2S = val:match(
-		'^(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+) '..
-		'(%-?[0-9%.e]+) (%-?[0-9%.e]+) (%-?[0-9%.e]+)$')
-	-- box (2 vectors)
-	if x1S then return {
-		vector{tonumber(x1S),tonumber(y1S),tonumber(z1S)},
-		vector{tonumber(x2S),tonumber(y2S),tonumber(z2S)} } end
+	-- vector, box, or axis->matrix
+	local vec = multinumericFromTs(val)
+	if vec then return vec end
+	-- net string
+	if val:sub(1,1)=='\x01' then
+		return _bllua_ts.call('getTaggedString', val)
+	end
 	-- string
 	return val
 end
 local function arglistFromTs(name, argsS)
 	local args = {}
-	for i,arg in ipairs(argsS) do
+	for i,arg in ipairsNilable(argsS) do
 		args[i] = valFromTs(arg, name..':'..i)
 	end
 	return args
 end
 local function arglistToTs(args)
-	return map(args, valToTs)
+	local argsS = {}
+	for i,v in ipairsNilable(args) do
+		table.insert(argsS, valToTs(v))
+	end
+	return argsS
 end
 local function classFromForceTypeStr(name)
 	local class, rest = name:match('^([a-zA-Z0-9_]+)(::.+)$')
@@ -189,13 +245,33 @@ setForceType = function(ftname, typ)
 end
 bl.type = setForceType
 
+-- Type conversion TS->Lua backwards, convert back to string
+local function numFromTsTostring(val)
+	-- todo: as-good-as-possible scientific notation for numbers
+	return tostring(val)
+end
+local function valFromTsTostring(val)
+	if type(val)=='string' then
+		return val
+	elseif type(val)=='number' then
+		return numFromTsTostring(val)
+	elseif type(val)=='table' then
+		if val.__is_vector then
+			local strs = {}
+			for i=1,#val do strs[i] = numFromTsTostring(val[i]) end
+			return table.concat(strs, ' ')
+		elseif val.__is_matrix then
+			-- todo: matrix back to axis-angle string
+			error('bl.string: matrix not yet supported', 3)
+		end
+	end
+	error('bl.string: cannot convert \''..type(val)..'\'', 3)
+end
 
--- Value detection
-
+-- Getting info from TS about functions and objects
 local function isTsObject(t)
 	return type(t)=='table' and t._tsObjectId~=nil
 end
-
 local function tsIsObject(name) return tsBool(_bllua_ts.call('isObject', name)) end
 local function tsIsFunction(name) return tsBool(_bllua_ts.call('isFunction', name)) end
 local function tsIsFunctionNs(ns, name) return tsBool(_bllua_ts.call('isFunction', ns, name)) end
@@ -204,27 +280,31 @@ local function tsIsFunctionNsname(nsname)
 	if ns then return tsIsFunctionNs(ns, name)
 	else return tsIsFunction(nsname) end
 end
-
+-- sanity check to make sure objects that don't isObject are always marked as ._deleted
+-- can be removed later
+local function assertTsObjectExists(obj)
+	local is = tsIsObject(obj._tsObjectId)
+	if not is then
+		print('Warning: TS object :exists or isobject from lua but no longer exists') end
+	return is
+end
 function bl.isObject(obj)
-	if isTsObject(obj) then
-		obj = obj._tsObjectId
-	elseif type(obj)=='number' then
-		obj = tostring(obj)
-	elseif type(obj)~='string' then
+	if type(obj)=='number' then -- object id
+		return tsIsObject(tostring(obj))
+	elseif type(obj)=='string' then -- object name
+		return tsIsObject(obj)
+	elseif isTsObject(obj) then -- lua object
+		if obj._deleted then
+			return false
+		else
+			return assertTsObjectExists(obj)
+		end
+	else
 		error('bl.isObject: argument #1: expected torque object, number, or string', 2)
 	end
-	return tsIsObject(obj)
 end
-function bl.isFunction(a1, a2)
-	if type(a1)~='string' then
-		error('bl.isFunction: argument #1: expected string', 2) end
-	if a2 then
-		if type(a2)~='string' then
-			error('bl.isFunction: argument #2: expected string', 2) end
-		return tsIsFunctionNs(a1, a2)
-	else
-		return tsIsFunction(a1)
-	end
+function bl.isFunction(name)
+	return tsIsFunctionNsname(name)
 end
 
 -- Torque object pseudo-class
@@ -307,17 +387,19 @@ local tsObjectMeta = {
 				tsIsFunctionNs(rawget(t,'_tsNamespace'), name) or
 				tsIsFunctionNs(rawget(t,'_tsName'), name)
 			then
-				return function(t, ...)
-					local args = {...}
-					local argsS = arglistToTs(args)
-					return valFromTs(
-						_bllua_ts.callobj(rawget(t,'_tsObjectId'), name, unpack(argsS)),
-						rawget(t,'_tsName') and rawget(t,'_tsName')..'::'..name,
-						rawget(t,'_tsNamespace')..'::'..name)
+				return function(t2, ...)
+					if t2==nil or type(t2)~='table' or not t2._tsObjectId then
+						error('ts object method: be sure to use :func() not .func()', 2) end
+					local argsS = arglistToTs({...})
+					local res =
+						_bllua_ts.callobj(t2._tsObjectId, name, unpack(argsS))
+					return valFromTs(res,
+						t2._tsName and t2._tsName..'::'..name,
+						t2._tsNamespace..'::'..name)
 				end
 			else
-				return valFromTs(
-					_bllua_ts.getfield(rawget(t,'_tsObjectId'), name),
+				local res = _bllua_ts.getfield(rawget(t,'_tsObjectId'), name)
+				return valFromTs(res,
 					rawget(t,'_tsName') and rawget(t,'_tsName')..'.'..name,
 					rawget(t,'_tsNamespace')..'.'..name)
 			end
@@ -350,7 +432,8 @@ local tsObjectMeta = {
 	-- Display a nice info string
 	__tostring = function(t)
 		return 'torque:'..t._tsNamespace..':'..t._tsObjectId..
-			(t._tsName~='' and ('('..t._tsName..')') or '')
+			(t._tsName~='' and ('('..t._tsName..')') or '')..
+			(t._deleted and '(deleted)' or '')
 	end,
 	-- #object
 	-- If the object has a getCount method, return its count
@@ -381,7 +464,8 @@ local tsObjectMeta = {
 				local obj = toTsObject(_bllua_ts.callobj(t._tsObjectId,
 					'getObject', tostring(idx)))
 				idx = idx+1
-				return idx-1, obj
+				--return idx-1, obj
+				return obj
 			else
 				return nil
 			end
@@ -430,8 +514,10 @@ local tsObjectMeta = {
 		if t==nil then
 			error('ts object method: be sure to use :func() not .func()', 2) end
 		if t._deleted then
-			return false end
-		return tsIsObject(t._tsObjectId)
+			return false
+		else
+			return assertTsObjectExists(t)
+		end
 	end,
 }
 -- Weak-values table for caching Torque object references
@@ -464,7 +550,7 @@ toTsObject = function(idiS)
 	idiS = idiS:lower()
 	if bl._objectsWeak[idiS] then return bl._objectsWeak[idiS] end
 	
-	if not tsBool(_bllua_ts.call('isObject', idiS)) then
+	if not tsIsObject(idiS) then
 		--error('toTsObject: object \''..idiS..'\' does not exist', 2) end
 		return nil end
 	
@@ -486,14 +572,13 @@ end
 local function safeNamespaceName(name)
 	return tostring(name:gsub(':', '_'))
 end
-local nscallArgStr = '%a,%b,%c,%d,%e,%f,%g,%h'
 bl._cachedNamespaceCalls = {}
 local function tsNamespacedCallTfname(name)
 	local tfname = bl._cachedNamespaceCalls[name]
 	if not tfname then
 		tfname = '_bllua_nscall_'..safeNamespaceName(name)
-		local tfcode = 'function '..tfname..'('..nscallArgStr..'){'..
-			name..'('..nscallArgStr..');}'
+		local tfcode = 'function '..tfname..'('..tsArgsLocal..'){'..
+			name..'('..tsArgsLocal..');}'
 		_bllua_ts.eval(tfcode)
 		bl._cachedNamespaceCalls[name] = tfname
 	end
@@ -501,9 +586,9 @@ local function tsNamespacedCallTfname(name)
 end
 local function tsCallGen(name)
 	return function(...)
-		local args = {...}
-		local argsS = arglistToTs(args)
-		return valFromTs(_bllua_ts.call(name, unpack(argsS)), name)
+		local argsS = arglistToTs({...})
+		local res = _bllua_ts.call(name, unpack(argsS))
+		return valFromTs(res, name)
 	end
 end
 
@@ -529,14 +614,16 @@ local tsMeta = {
 				if not rest:find('::') and tsIsFunctionNs(ns, rest) then
 					return tsCallGen(tsNamespacedCallTfname(name))
 				else
-					return valFromTs(_bllua_ts.getvar(name), name)
+					local res = _bllua_ts.getvar(name)
+					return valFromTs(res, name)
 				end
 			elseif tsIsFunction(name) then
 				return tsCallGen(name)
 			elseif tsIsObject(name) then
 				return toTsObject(name)
 			else
-				return valFromTs(_bllua_ts.getvar(name), name)
+				local res = _bllua_ts.getvar(name)
+				return valFromTs(res, name)
 			end
 		end
 	end,
@@ -555,10 +642,16 @@ function bl.call(func, ...)
 	return _bllua_ts.call(func, unpack(argsS))
 end
 function bl.eval(code)
-	return valFromTs(_bllua_ts.eval(code))
+	local res = _bllua_ts.eval(code)
+	return valFromTs(res)
 end
 function bl.exec(file)
-	return valFromTs(_bllua_ts.call('exec', file))
+	local res = _bllua_ts.call('exec', file)
+	return valFromTs(res)
+end
+function bl.array(name, ...)
+	local rest = {...}
+	return name..table.concat(rest, '_')
 end
 function bl.boolean(val)
 	return val~=nil and
@@ -576,18 +669,63 @@ function bl.object(id)
 		error('bl.object: id must be a ts object, number, or string', 2)
 	end
 end
-function bl.array(name, ...)
-	local rest = {...}
-	return name..table.concat(rest, '_')
+function bl.string(val)
+	return valFromTsTostring(val)
 end
-function _bllua_call(fnameS, ...)
-	local args = arglistFromTs('lua:'..fnameS:lower(), {...}) -- todo: allow this though bl.type
-	if not _G[fnameS] then
-		error('luacall: no global lua function named \''..fnameS..'\'') end
-	-- todo: library fields and object methods
-	local res = _G[fnameS](unpack(args))
+
+-- Lua calling from TS
+local luaLookup
+luaLookup = function(tbl, name, set, val)
+	if name:find('%.') then
+		local first, rest = name:match('^([^%.:]+)%.(.+)$')
+		if not isValidFuncName(first) then
+			error('luaLookup: invalid name \''..tostring(first)..'\'', 3) end
+		if tbl[first]==nil then
+			if set then tbl[first] = {}
+			else return nil end
+		end
+		return luaLookup(tbl[first], rest, set, val)
+	elseif name:find(':') then
+		local first, rest = name:match('^([^%.:]+):(.*)$')
+		if rest:find('[%.:]') then
+			error('luacall: cannot have : or . after :', 3) end
+		if not isValidFuncName(first) then
+			error('luacall: invalid name \''..tostring(first)..'\'', 3) end
+		if not isValidFuncName(rest) then
+			error('luacall: invalid method name \''..tostring(first)..'\'', 3) end
+		if not tbl[first] then
+			error('luacall: no object named \''..rest..'\'', 3) end
+		if tbl[first][rest]==nil then
+			error('luacall: no method named \''..rest..'\'', 3) end
+		return function(...)
+			tbl[first][rest](tbl[first], ...)
+		end
+	else
+		if set then
+			tbl[name] = val
+		else
+			return tbl[name]
+		end
+	end
+end
+-- Todo: similar deep access for luaget and luaset
+function _bllua_call(fname, ...)
+	local args = arglistFromTs(fname:lower(), {...}) -- todo: separate lua from ts func names?
+	local func = luaLookup(_G, fname)
+	if not func then
+		error('luacall: no global in lua named \''..fname..'\'', 2) end
+	local res = func(unpack(args))
 	return valToTs(res)
 end
+function _bllua_getvar(vname)
+	return valToTs(luaLookup(_G, vname))
+end
+function _bllua_setvar(vname, valS)
+	return valToTs(luaLookup(_G, vname, true, valFromTs(valS, vname))) -- todo: separate lua from ts var names?
+end
+function _bllua_eval(code) return loadstring(code)() end
+function _bllua_exec(fn) return dofile(fn, 2) end
+
 
 -- bl.schedule: Use TS's schedule function to schedule lua calls
 -- bl.schedule(time, function, args...)
@@ -637,9 +775,8 @@ local function addCmd(cmd, func)
 	if not isValidFuncName(cmd) then
 		error('addCmd: invalid function name \''..tostring(cmd)..'\'') end
 	bl._cmds[cmd] = func
-	local arglist = '%a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p'
-	_bllua_ts.eval('function '..cmd..'('..arglist..'){'..
-		'_bllua_luacall(_bllua_process_cmd,"'..cmd..'",'..arglist..');}')
+	_bllua_ts.eval('function '..cmd..'('..tsArgsLocal..'){'..
+		'_bllua_luacall(_bllua_process_cmd,"'..cmd..'",'..tsArgsLocal..');}')
 end
 function bl.addServerCmd(name, func)
 	name = name:lower()
@@ -657,8 +794,9 @@ function bl.commandToServer(cmd, ...)
 		_bllua_ts.call('addTaggedString', cmd),
 		unpack(arglistToTs({...})))
 end
-function bl.commandToClient(cmd, ...)
+function bl.commandToClient(client, cmd, ...)
 	_bllua_ts.call('commandToClient',
+		valToTs(client),
 		_bllua_ts.call('addTaggedString', cmd),
 		unpack(arglistToTs({...})))
 end
@@ -687,9 +825,6 @@ local function deactivatePackage(pkg)
 		_bllua_ts.call('deactivatePackage', pkg)
 	end
 end
-local hookNargs = 8
-local hookArglistLocal = '%a,%b,%c,%d,%e,%f,%g,%h'
-local hookArglistGlobal = '$_bllua_hook_arg1,$_bllua_hook_arg2,$_bllua_hook_arg3,$_bllua_hook_arg4,$_bllua_hook_arg5,$_bllua_hook_arg6,$_bllua_hook_arg7,$_bllua_hook_arg8'
 bl._hooks = bl._hooks or {}
 function _bllua_process_hook_before(pkgS, nameS, ...)
 	local args = arglistFromTs(nameS, {...})
@@ -703,7 +838,7 @@ function _bllua_process_hook_before(pkgS, nameS, ...)
 		_bllua_ts.setvar('_bllua_hook_abort', '1')
 		_bllua_ts.setvar('_bllua_hook_return', valToTs(args._return))
 	end
-	for i=1,hookNargs do
+	for i=1,tsMaxArgs do
 		_bllua_ts.setvar('_bllua_hook_arg'..i, valToTs(args[i]))
 	end
 end
@@ -720,13 +855,13 @@ function _bllua_process_hook_after(pkgS, nameS, resultS, ...)
 end
 local function updateHook(pkg, name, hk)
 	local beforeCode = hk.before and
-		('_bllua_luacall("_bllua_process_hook_before", "'..pkg..'","'..name..
-			'",'..hookArglistLocal..');') or ''
-	local arglist = (hk.before and hookArglistGlobal or hookArglistLocal)
+		('_bllua_luacall("_bllua_process_hook_before","'..pkg..'","'..name..
+			'",'..tsArgsLocal..');') or ''
+	local arglist = (hk.before and tsArgsGlobal or tsArgsLocal)
 	local parentCode =
 		tsIsFunctionNsname(name) and -- only call parent if it exists
 			(hk.before and
-				'if($_bllua_hook_abort)return $_bllua_hook_return; else ' or '')..
+				'if($_bllua_hook_abort)return $_bllua_hook_return;else ' or '')..
 			((hk.after and '%result=' or 'return ')..
 				'parent::'..name:match('[^:]+$')..
 				'('..arglist..');') or ''
@@ -735,10 +870,11 @@ local function updateHook(pkg, name, hk)
 			arglist..');') or ''
 	local code =
 		'package '..pkg..'{'..
-			'function '..name..'('..hookArglistLocal..'){'..
+			'function '..name..'('..tsArgsLocal..'){'..
 				beforeCode..parentCode..afterCode..
 			'}'..
 		'};'
+	print('bl.hook eval output: [['..code..']]')
 	_bllua_ts.eval(code)
 end
 function bl.hook(pkg, name, time, func)
@@ -764,9 +900,9 @@ end
 function bl.unhook(pkg, name, time)
 	if not isValidFuncName(pkg) then
 		error('bl.unhook: argument #1: invalid package name \''..tostring(pkg)..'\'', 2) end
-	if not isValidFuncNameNs(name) then
+	if name and not isValidFuncNameNs(name) then
 		error('bl.unhook: argument #2: invalid function name \''..tostring(name)..'\'', 2) end
-	if time~='before' and time~='after' then
+	if time and time~='before' and time~='after' then
 		error('bl.unhook: argument #3: time must be \'before\' or \'after\'', 2) end
 	
 	if not name then
@@ -793,10 +929,13 @@ function bl.unhook(pkg, name, time)
 				if time~='before' and time~='after' then
 					error('bl.unhook: argument #3: time must be nil, \'before\', or \'after\'', 2) end
 				bl._hooks[pkg][name][time] = nil
-				if tableEmpty(bl._hooks[pkg][name]) and tableEmpty(bl._hooks[pkg]) then
+				if tableEmpty(bl._hooks[pkg][name]) then
+					bl._hooks[pkg][name] = nil
+				end
+				if tableEmpty(bl._hooks[pkg]) then
 					bl._hooks[pkg] = nil
-					deactivatePackage(pkg)
 					updateHook(pkg, name, {})
+					deactivatePackage(pkg)
 				else
 					updateHook(pkg, name, bl._hooks[pkg][name])
 				end
@@ -852,7 +991,7 @@ function bl.raycast(start, stop, mask, ignores)
 	local stopS = vecToTs(start)
 	local maskS = maskToTs(mask)
 	local ignoresS = {}
-	for _,v in ipairs(ignores) do
+	for _,v in ipairsNilable(ignores) do
 		table.insert(ignoresS, objToTs(v))
 	end
 	
@@ -901,7 +1040,7 @@ end
 local maxTsArgLen = 8192
 local function valsToString(vals)
 	local strs = {}
-	for i,v in ipairs(vals) do
+	for i,v in ipairsNilable(vals) do
 		local tstr = table.tostring(v)
 		if #tstr>maxTsArgLen then
 			tstr = tostring(v)

src/util/libts-lua.lua

@@ -1,3 +1,4 @@
+
 -- This Lua code provides some built-in utilities for writing Lua add-ons
 -- It is eval'd automatically once BLLua3 has loaded the TS API and environment
 -- It only has access to the sandboxed lua environment, just like user code.
@@ -6,11 +7,8 @@ ts = _bllua_ts
 
 -- Provide limited OS functions
 os = os or {}
----@diagnostic disable-next-line: duplicate-set-field
-function os.time() return math.floor(tonumber(_bllua_ts.call('getSimTime')) / 1000) end
-
----@diagnostic disable-next-line: duplicate-set-field
-function os.clock() return tonumber(_bllua_ts.call('getSimTime')) / 1000 end
+function os.time() return math.floor(tonumber(_bllua_ts.call('getSimTime'))/1000) end
+function os.clock() return tonumber(_bllua_ts.call('getSimTime'))/1000 end
 
 -- Virtual file class, emulating a file object as returned by io.open
 -- Used to wrap io.open to allow reading from zips (using TS)
@@ -18,150 +16,141 @@ function os.clock() return tonumber(_bllua_ts.call('getSimTime')) / 1000 end
 --   Can't read nulls, can't distinguish between CRLF and LF.
 -- Todo someday: actually read the zip in lua?
 local file_meta = {
-  read = function(file, mode)
-    file:_init()
-    if not file or type(file) ~= 'table' or not file._is_file then error('File:read: Not a file', 2) end
-    if file._is_open ~= true then error('File:read: File is closed', 2) end
-    if mode == '*n' then
-      local ws, n = file.data:match('^([ \t\r\n]*)([0-9%.%-e]+)', file.pos)
-      if n then
-        file.pos = file.pos + #ws + #n
-        return n
-      else
-        return nil
-      end
-    elseif mode == '*a' then
-      local d = file.data:sub(file.pos, #file.data)
-      file.pos = #file.data + 1
-      return d
-    elseif mode == '*l' then
-      local l, ws = file.data:match('^([^\r\n]*)(\r?\n)', file.pos)
-      if not l then
-        l = file.data:match('^([^\r\n]*)$', file.pos); ws = '';
-        if l == '' then return nil end
-      end
-      if l then
-        file.pos = file.pos + #l + #ws
-        return l
-      else
-        return nil
-      end
-    elseif type(mode) == 'number' then
-      local d = file.data:sub(file.pos, file.pos + mode)
-      file.pos = file.pos + #d
-      return d
-    else
-      error('File:read: Invalid mode \'' .. mode .. '\'', 2)
-    end
-  end,
-  lines = function(file)
-    file:_init()
-    return function()
-      return file:read('*l')
-    end
-  end,
-  close = function(file)
-    if not file._is_open then error('File:close: File is not open', 2) end
-    file._is_open = false
-  end,
-  __index = function(f, k) return rawget(f, k) or getmetatable(f)[k] end,
-  _init = function(f)
-    if not f.data then
-      f.data = _bllua_ts.call('_bllua_ReadEntireFile', f.filename)
-    end
-  end,
+	read = function(file, mode)
+		file:_init()
+		if not file or type(file)~='table' or not file._is_file then error('File:read: Not a file', 2) end
+		if file._is_open ~= true then error('File:read: File is closed', 2) end
+		if mode=='*n' then
+			local ws, n = file.data:match('^([ \t\r\n]*)([0-9%.%-e]+)', file.pos)
+			if n then
+				file.pos = file.pos + #ws + #n
+				return n
+			else
+				return nil
+			end
+		elseif mode=='*a' then
+			local d = file.data:sub(file.pos, #file.data)
+			file.pos = #file.data + 1
+			return d
+		elseif mode=='*l' then
+			local l, ws = file.data:match('^([^\r\n]*)(\r?\n)', file.pos)
+			if not l then
+				l = file.data:match('^([^\r\n]*)$', file.pos); ws = '';
+				if l=='' then return nil end
+			end
+			if l then
+				file.pos = file.pos + #l + #ws
+				return l
+			else
+				return nil
+			end
+		elseif type(mode)=='number' then
+			local d = file.data:sub(file.pos, file.pos+mode)
+			file.pos = file.pos + #d
+			return d
+		else
+			error('File:read: Invalid mode \''..mode..'\'', 2)
+		end
+	end,
+	lines = function(file)
+		file:_init()
+		return function()
+			return file:read('*l')
+		end
+	end,
+	close = function(file)
+		if not file._is_open then error('File:close: File is not open', 2) end
+		file._is_open = false
+	end,
+	__index = function(f, k) return rawget(f, k) or getmetatable(f)[k] end,
+	_init = function(f)
+		if not f.data then
+			f.data = _bllua_ts.call('_bllua_ReadEntireFile', f.filename)
+		end
+	end,
 }
 local function new_file_obj(fn)
-  local file = {
-    _is_file = true,
-    _is_open = true,
-    pos = 1,
-    __index = file_meta.__index,
-    filename = fn,
-    data = nil,
-  }
-  setmetatable(file, file_meta)
-  return file
+	local file = {
+		_is_file = true,
+		_is_open = true,
+		pos = 1,
+		__index = file_meta.__index,
+		filename = fn,
+		data = nil,
+	}
+	setmetatable(file, file_meta)
+	return file
 end
 
-local function tflip(t)
-  local u = {}; for _, n in ipairs(t) do u[n] = true end; return u;
-end
-local allowed_zip_dirs = tflip {
-  'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
+local function tflip(t) local u = {}; for _, n in ipairs(t) do u[n] = true end; return u; end
+local allowed_zip_dirs = tflip{
+	'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
 }
 local function io_open_absolute(fn, mode)
-  -- if file exists, use original mode
-  local res, err = _bllua_io_open(fn, mode)
-  if res then return res end
+	-- if file exists, use original mode
+	local res, err = _bllua_io_open(fn, mode)
+	if res then return res
+	elseif err and not err:find('No such file or directory$') then return nil, err end
 	
-  -- otherwise, if TS sees file but Lua doesn't, it must be in a zip, so use TS reader
-  local dir = fn:match('^[^/]+')
-  if not allowed_zip_dirs[dir:lower()] then return nil, 'File is not in one of the allowed directories' end
-  local exist = _bllua_ts.call('isFile', fn) == '1'
-  if not exist then return nil, err end
+	-- otherwise, if TS sees file but Lua doesn't, it must be in a zip, so use TS reader
+	local dir = fn:match('^[^/]+')
+	if not allowed_zip_dirs[dir:lower()] then return nil, 'Zip is not in one of the allowed directories' end
+	local exist = _bllua_ts.call('isFile', fn) == '1'
+	if not exist then return nil, err end
 	
-  if mode ~= nil and mode ~= 'r' and mode ~= 'rb' then
-    return nil, 'Files in zips can only be opened in read mode'
-  end
+	if mode~=nil and mode~='r' and mode~='rb' then
+		return nil, 'Files in zips can only be opened in read mode' end
 	
-  -- return a temp lua file object with the data
-  local fi = new_file_obj(fn)
-  return fi
+	-- return a temp lua file object with the data
+	local fi = new_file_obj(fn)
+	return fi
 end
 
 io = io or {}
----@diagnostic disable-next-line: duplicate-set-field
 function io.open(fn, mode, errn)
-  errn = errn or 1
+	errn = errn or 1
 	
-  -- try to open the file with relative path, otherwise use absolute path
-  local curfn = debug.getfilename(errn + 1) or _bllua_ts.getvar('Con::File')
-  if curfn == '' then curfn = nil end
-  if fn:find('^%.') then
-    local relfn = curfn and fn:find('^%./') and
-        curfn:gsub('[^/]+$', '') .. fn:gsub('^%./', '')
-    if relfn then
-      local fi, err = io_open_absolute(relfn, mode)
-      return fi, err, relfn
-    else
-      return nil, 'Invalid path', fn
-    end
-  else
-    local fi, err = io_open_absolute(fn, mode)
-    return fi, err, fn
-  end
+	-- try to open the file with relative path, otherwise use absolute path
+	local curfn = debug.getfilename(errn + 1) or _bllua_ts.getvar('Con::File')
+	if curfn == '' then curfn = nil end
+	if fn:find('^%.') then
+		local relfn = curfn and fn:find('^%./') and
+			curfn:gsub('[^/]+$', '')..fn:gsub('^%./', '')
+		if relfn then
+			local fi, err = io_open_absolute(relfn, mode)
+			return fi, err, relfn
+		else
+			return nil, 'Invalid path', fn
+		end
+	else
+		local fi, err = io_open_absolute(fn, mode)
+		return fi, err, fn
+	end
 end
-
----@diagnostic disable-next-line: duplicate-set-field
 function io.lines(fn)
-  local fi, err, fn2 = io.open(fn, nil, 2)
-  if not fi then error('Error opening file \'' .. fn2 .. '\': ' .. err, 2) end
-  return fi:lines()
+	local fi, err, fn2 = io.open(fn, nil, 2)
+	if not fi then error('Error opening file \''..fn2..'\': '..err, 2) end
+	return fi:lines()
 end
-
----@diagnostic disable-next-line: duplicate-set-field
 function io.type(f)
-  ---@diagnostic disable-next-line: undefined-field
-  if type(f) == 'table' and f._is_file then
-    ---@diagnostic disable-next-line: undefined-field
-    return f._is_open and 'file' or 'closed file'
-  else
-    return _bllua_io_type(f)
-  end
+	if type(f)=='table' and f._is_file then
+		return f._is_open and 'file' or 'closed file'
+	else
+		return _bllua_io_type(f)
+	end
 end
 
 -- provide dofile
 function dofile(fn, errn)
-  errn = errn or 1
+	errn = errn or 1
 	
-  local fi, err, fn2 = io.open(fn, 'r', errn + 1)
-  if not fi then error('Error executing file \'' .. fn2 .. '\': ' .. err, errn + 1) end
+	local fi, err, fn2 = io.open(fn, 'r', errn+1)
+	if not fi then error('Error executing file \''..fn2..'\': '..err, errn+1) end
 	
-  print('Executing ' .. fn2)
-  local text = fi:read('*a')
-  fi:close()
-  return assert(loadstring('--[[' .. fn2 .. ']]' .. text))()
+	print('Executing '..fn2)
+	local text = fi:read('*a')
+	fi:close()
+	return assert(loadstring('--[['..fn2..']]'..text))()
 end
 
 -- provide require (just a wrapper for dofile)
@@ -170,67 +159,57 @@ end
 --   blockland directory
 --   current add-on
 local function file_exists(fn, errn)
-  local fi, err, fn2 = io.open(fn, 'r', errn + 1)
-  if fi then
-    fi:close()
-    return fn2
-  else
-    return nil
-  end
+	local fi, err, fn2 = io.open(fn, 'r', errn+1)
+	if fi then
+		fi:close()
+		return fn2
+	else
+		return nil
+	end
 end
 local require_memo = {}
 function require(mod)
-  if require_memo[mod] then return unpack(require_memo[mod]) end
-  local fp = mod:gsub('%.', '/')
-  local fns = {
-    './' .. fp .. '.lua', -- local file
-    './' .. fp .. '/init.lua', -- local library
-    fp .. '.lua',        -- global file
-    fp .. '/init.lua',   -- global library
-  }
-  if fp:lower():find('^add-ons/') then
-    local addonpath = fp:lower():match('^add-ons/[^/]+') .. '/'
-    table.insert(fns, addonpath .. fp .. '.lua') -- add-on file
-    table.insert(fns, addonpath .. fp .. '/init.lua') -- add-on library
-  end
-  for _, fn in ipairs(fns) do
-    local fne = file_exists(fn, 2)
-    if fne then
-      local res = { dofile(fne, 2) }
-      require_memo[mod] = res
-      return unpack(res)
-    end
-  end
-  return _bllua_requiresecure(mod)
+	if require_memo[mod] then return unpack(require_memo[mod]) end
+	local fp = mod:gsub('%.', '/')
+	local fns = {
+		'./'..fp..'.lua',      -- local file
+		'./'..fp..'/init.lua', -- local library
+		fp..'.lua',            -- global file
+		fp..'/init.lua',       -- global library
+	}
+	if fp:lower():find('^add-ons/') then
+		local addonpath = fp:lower():match('^add-ons/[^/]+')..'/'
+		table.insert(fns, addonpath..fp..'.lua')      -- add-on file
+		table.insert(fns, addonpath..fp..'/init.lua') -- add-on library
+	end
+	for _,fn in ipairs(fns) do
+		local fne = file_exists(fn, 2)
+		if fne then
+			local res = {dofile(fne, 2)}
+			require_memo[mod] = res
+			return unpack(res)
+		end
+	end
+	return _bllua_requiresecure(mod)
 end
 
--- Exposure to TS
-function _bllua_getvar(name) return _G[name] end
-
-function _bllua_setvar(name, val) _G[name] = val end
-
-function _bllua_eval(code) return loadstring(code)() end
-
-function _bllua_exec(fn) return dofile(fn, 2) end
-
 local function isValidCode(code)
-  local f, e = loadstring(code)
-  return f ~= nil
+	local f,e = loadstring(code)
+	return f~=nil
 end
 function _bllua_smarteval(code)
-  if (not code:find('^print%(')) and isValidCode('print(' .. code .. ')') then
-    code = 'print(' .. code .. ')'
-  end
-  local f, e = loadstring(code)
-  if f then
-    return f()
-  else
-    print(e)
-  end
+	if (not code:find('^print%(')) and isValidCode('print('..code..')') then
+		code = 'print('..code..')' end
+	local f,e = loadstring(code)
+	if f then
+		return f()
+	else
+		print(e)
+	end
 end
 
 function ts.setvar(name, val)
-  _bllua_ts.call('_bllua_set_var', name, val)
+	_bllua_ts.call('_bllua_set_var', name, val)
 end
 
 _bllua_ts.call('echo', '  Executed libts-lua.lua')

src/util/libts-ts.cs

@@ -49,26 +49,4 @@ function _bllua_set_var(%name, %val) {
 	return "";
 }
 
-// Public Lua library for TS
-function luacall(%func, %a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p) {
-	if($_bllua_active)
-		return _bllua_luacall("_bllua_call", %func, %a,%b,%c,%d,%e,%f,%g,%h,%i,%j,%k,%l,%m,%n,%o,%p);
-}
-function luaexec(%fn) {
-	if($_bllua_active)
-		return _bllua_luacall("_bllua_exec", %fn);
-}
-function luaeval(%code) {
-	if($_bllua_active)
-		return _bllua_luacall("_bllua_eval", %code);
-}
-function luaget(%name) {
-	if($_bllua_active)
-		return _bllua_luacall("_bllua_getvar", %name);
-}
-function luaset(%name, %val) {
-	if($_bllua_active)
-		_bllua_luacall("_bllua_setvar", %name, %val);
-}
-
 echo("  Executed libts-ts.cs");

src/util/matrix.lua

@@ -0,0 +1,7 @@
+
+-- todo
+-- Matrix class with math operators
+
+
+
+print('  Executed matrix.lua')

src/util/std.lua

@@ -1,374 +1,370 @@
+
 -- Basic functionality that should be standard in Lua
 
 
 -- Table / List
 -- Whether a table contains no keys
 function table.empty(t)
-  return next(t) ~= nil
+	return next(t)==nil
 end
-
 -- Apply a function to each key in a table
 function table.map(f, ...)
-  local ts = { ... }
-  local u = {}
-  for k, _ in pairs(ts[1]) do
-    local args = {}
-    for j = 1, #ts do args[j] = ts[j][i] end
-    u[i] = f(unpack(args))
-  end
-  return u
+	local ts = {...}
+	local u = {}
+	for k,_ in pairs(ts[1]) do
+		local args = {}
+		for j=1,#ts do args[j] = ts[j][k] end
+		u[k] = f(unpack(args))
+	end
+	return u
+end
+function table.mapk(f, ...)
+	local ts = {...}
+	local u = {}
+	for k,_ in pairs(ts[1]) do
+		local args = {}
+		for j=1,#ts do args[j] = ts[j][k] end
+		u[k] = f(k, unpack(args))
+	end
+	return u
 end
-
 function table.map_list(f, ...)
-  local ts = { ... }
-  local u = {}
-  for i = 1, #ts[1] do
-    local args = {}
-    for j = 1, #ts do args[j] = ts[j][i] end
-    u[i] = f(unpack(args))
-  end
-  return u
+	local ts = {...}
+	local u = {}
+	for i=1,#ts[1] do
+		local args = {}
+		for j=1,#ts do args[j] = ts[j][i] end
+		u[i] = f(unpack(args))
+	end
+	return u
+end
+function table.mapi_list(f, ...)
+	local ts = {...}
+	local u = {}
+	for i=1,#ts[1] do
+		local args = {}
+		for j=1,#ts do args[j] = ts[j][i] end
+		u[i] = f(i, unpack(args))
+	end
+	return u
 end
-
 -- Swap keys/values
 function table.swap(t)
-  local u = {}
-  for k, v in pairs(t) do u[v] = k end
-  return u
+	local u = {}
+	for k,v in pairs(t) do u[v] = k end
+	return u
 end
-
 -- Reverse a list
 function table.reverse(l)
-  local m = {}
-  for i = 1, #l do m[#l - i + 1] = l[i] end
-  return m
+	local m = {}
+	for i=1,#l do m[#l-i+1] = l[i] end
+	return m
 end
-
 -- Whether a table is a list/array (has only monotonic integer keys)
 function table.islist(t)
-  local n = 0
-  for i, _ in pairs(t) do
-    if type(i) ~= 'number' or i % 1 ~= 0 then return false end
-    n = n + 1
-  end
-  return n == #t
+	local n = 0
+	for i,_ in pairs(t) do
+		if type(i)~='number' or i%1~=0 then return false end
+		n = n+1
+	end
+	return n==#t
 end
-
 -- Append contents of other tables to first table
 function table.append(t, ...)
-  local a = { ... }
-  for _, u in ipairs(a) do
-    for _, v in ipairs(u) do table.insert(t, v) end
-  end
-  return t
+	local a = {...}
+	for _,u in ipairs(a) do
+		for _,v in ipairs(u) do table.insert(t,v) end
+	end
+	return t
 end
-
 -- Create a new table containing all keys from any number of tables
 -- latter tables in the arg list override prior ones
 -- overlaps, NOT appends, integer keys
 function table.join(...)
-  local ts = { ... }
-  local w = {}
-  for _, t in ipairs(ts) do
-    for k, v in pairs(t) do w[k] = v end
-  end
-  return w
+	local ts = {...}
+	local w = {}
+	for _,t in ipairs(ts) do
+		for k,v in pairs(t) do w[k] = v end
+	end
+	return w
 end
-
 -- Whether a table contains a certain value in any key
-function table.contains(t, s)
-  for _, v in pairs(t) do
-    if v == s then return true end
-  end
-  return false
+function table.contains(t,s)
+	for _,v in pairs(t) do
+		if v==s then return true end
+	end
+	return false
 end
-
-function table.contains_list(t, s)
-  for _, v in ipairs(t) do
-    if v == s then return true end
-  end
-  return false
+function table.contains_list(t,s)
+	for _,v in ipairs(t) do
+		if v==s then return true end
+	end
+	return false
 end
-
 -- Copy a table to another table
 function table.copy(t)
-  local u = {}
-  for k, v in pairs(t) do u[k] = v end
-  return u
+	local u = {}
+	for k,v in pairs(t) do u[k] = v end
+	return u
 end
-
 function table.copy_list(l)
-  local m = {}
-  for i, v in ipairs(l) do m[i] = v end
-  return m
+	local m = {}
+	for i,v in ipairs(l) do m[i] = v end
+	return m
 end
-
 -- Sort a table in a new copy
 function table.sortcopy(t, f)
-  local u = table.copy_list(t)
-  table.sort(u, f)
-  return u
+	local u = table.copy_list(t)
+	table.sort(u, f)
+	return u
 end
-
 -- Remove a value from a table
 function table.removevalue(t, r)
-  local rem = {}
-  for k, v in pairs(t) do
-    if v == r then table.insert(rem, k) end
-  end
-  for _, k in ipairs(rem) do t[k] = nil end
+	local rem = {}
+	for k,v in pairs(t) do
+		if v==r then table.insert(rem, k) end
+	end
+	for _,k in ipairs(rem) do t[k] = nil end
 end
-
 function table.removevalue_list(t, r)
-  for i = #t, 1, -1 do
-    if t[i] == r then
-      table.remove(t, i)
-    end
-  end
+	for i = #t, 1, -1 do
+		if t[i]==r then
+			table.remove(t, i)
+		end
+	end
 end
-
 -- Export tables into formatted executable strings
 local function tabs(tabLevel)
-  return ('  '):rep(tabLevel)
+	return ('  '):rep(tabLevel)
 end
 local valueToString
 local function tableToString(t, tabLevel, seen)
-  if type(t) ~= 'table' or (getmetatable(t) and getmetatable(t).__tostring) then
-    return tostring(t)
-  elseif table.islist(t) then
-    if #t == 0 then
-      return '{}'
-    else
-      local strs = {}
-      local containsTables = false
-      for _, v in ipairs(t) do
-        if type(v) == 'table' then containsTables = true end
-        table.insert(strs, valueToString(v, tabLevel + 1, seen) .. ',')
-      end
-      if containsTables or #t > 3 then
-        return '{\n' .. tabs(tabLevel + 1)
-            .. table.concat(strs, '\n' .. tabs(tabLevel + 1))
-            .. '\n' .. tabs(tabLevel) .. '}'
-      else
-        return '{ ' .. table.concat(strs, ' ') .. ' }'
-      end
-    end
-  else
-    local containsNonStringKeys = false
-    for k, v in pairs(t) do
-      if type(k) ~= 'string' or k:find('[^a-zA-Z0-9_]') then
-        containsNonStringKeys = true
-      elseif type(k) == 'table' then
-        error('table.tostring: table contains a table as key, cannot serialize')
-      end
-    end
-    local strs = {}
-    if containsNonStringKeys then
-      for k, v in pairs(t) do
-        table.insert(strs, '\n' .. tabs(tabLevel + 1)
-          .. '[' .. valueToString(k, tabLevel + 1, seen) .. '] = '
-          .. valueToString(v, tabLevel + 1, seen) .. ',')
-      end
-    else
-      for k, v in pairs(t) do
-        table.insert(strs, '\n' .. tabs(tabLevel + 1)
-          .. k .. ' = ' .. valueToString(v, tabLevel + 1, seen) .. ',')
-      end
-    end
-    return '{' .. table.concat(strs) .. '\n' .. tabs(tabLevel) .. '}'
-  end
+	if type(t)~='table' or (getmetatable(t) and getmetatable(t).__tostring) then
+		return tostring(t)
+	elseif table.islist(t) then
+		if #t==0 then
+			return '{}'
+		else
+			local strs = {}
+			local containsTables = false
+			for _,v in ipairs(t) do
+				if type(v)=='table' then containsTables = true end
+				table.insert(strs, valueToString(v, tabLevel+1, seen)..',')
+			end
+			if containsTables or #t>3 then
+				return '{\n'..tabs(tabLevel+1)
+					..table.concat(strs, '\n'..tabs(tabLevel+1))
+					..'\n'..tabs(tabLevel)..'}'
+			else
+				return '{ '..table.concat(strs, ' ')..' }'
+			end
+		end
+	else
+		local containsNonStringKeys = false
+		for k,v in pairs(t) do
+			if type(k)~='string' or k:find('[^a-zA-Z0-9_]') then
+				containsNonStringKeys = true
+			elseif type(k)=='table' then
+				error('table.tostring: table contains a table as key, cannot serialize')
+			end
+		end
+		local strs = {}
+		if containsNonStringKeys then
+			for k,v in pairs(t) do
+				table.insert(strs, '\n'..tabs(tabLevel+1)
+					..'['..valueToString(k, tabLevel+1, seen)..'] = '
+					..valueToString(v, tabLevel+1, seen)..',')
+			end
+		else
+			for k,v in pairs(t) do
+				table.insert(strs, '\n'..tabs(tabLevel+1)
+					..k..' = '..valueToString(v, tabLevel+1, seen)..',')
+			end
+		end
+		return '{'..table.concat(strs)..'\n'..tabs(tabLevel)..'}'
+	end
 end
 valueToString = function(v, tabLevel, seen)
-  local t = type(v)
-  if t == 'table' then
-    if seen[v] then
-      return 'nil --[[ already seen: ' .. tostring(v) .. ' ]]'
-    else
-      seen[v] = true
-      return tableToString(v, tabLevel, seen)
-    end
-  elseif t == 'string' then
-    return '\'' .. string.escape(v) .. '\''
-  elseif t == 'number' or t == 'boolean' then
-    return tostring(v)
-  else
-    --error('table.tostring: table contains a '..t..' value, cannot serialize')
-    return 'nil --[[ cannot serialize ' .. t .. ': ' .. tostring(v) .. ' ]]'
-  end
+	local t = type(v)
+	if t=='table' then
+		if seen[v] then
+			return 'nil --[[ already seen: '..tostring(v)..' ]]'
+		else
+			seen[v] = true
+			return tableToString(v, tabLevel, seen)
+		end
+	elseif t=='string' then
+		return '\''..string.escape(v)..'\''
+	elseif t=='number' or t=='boolean' then
+		return tostring(v)
+	else
+		--error('table.tostring: table contains a '..t..' value, cannot serialize')
+		return 'nil --[[ '..tostring(v)..' ]]'
+	end
 end
 function table.tostring(t)
-  return tableToString(t, 0, {})
+	return tableToString(t, 0, {})
 end
 
+
 -- String
 
 -- Split string into table by separator
 -- or by chars if no separator given
 -- if regex is not true, sep is treated as a regex pattern
 function string.split(str, sep, noregex)
-  if type(str) ~= 'string' then
-    error('string.split: argument #1: expected string, got ' .. type(str), 2)
-  end
-  if sep == nil or sep == '' then
-    local t = {}
-    local ns = #str
-    for x = 1, ns do
-      table.insert(t, str:sub(x, x))
-    end
-    return t
-  elseif type(sep) == 'string' then
-    local t = {}
-    if #str > 0 then
-      local first = 1
-      while true do
-        local last, newfirst = str:find(sep, first, noregex)
-        if not last then break end
-        table.insert(t, str:sub(first, last - 1))
-        first = newfirst + 1
-      end
-      table.insert(t, str:sub(first, #str))
-    end
-    return t
-  else
-    error(
-      'string.split: argument #2: expected string or nil, got ' .. type(sep), 2)
-  end
+	if type(str)~='string' then
+		error('string.split: argument #1: expected string, got '..type(str), 2) end
+	if sep==nil or sep=='' then
+		local t = {}
+		local ns = #str
+		for x = 1, ns do
+			table.insert(t, str:sub(x, x))
+		end
+		return t
+	elseif type(sep)=='string' then
+		local t = {}
+		if #str>0 then
+			local first = 1
+			while true do
+				local last, newfirst = str:find(sep, first, noregex)
+				if not last then break end
+				table.insert(t, str:sub(first, last-1))
+				first = newfirst+1
+			end
+			table.insert(t, str:sub(first, #str))
+		end
+		return t
+	else
+		error(
+			'string.split: argument #2: expected string or nil, got '..type(sep), 2)
+	end
 end
-
 -- Split string to a list of char bytes
 function string.bytes(s)
-  local b = {}
-  for i = 1, #s do
-    local c = s:sub(i, i)
-    table.insert(b, c:byte())
-  end
-  return b
+	local b = {}
+	for i=1,#s do
+		local c = s:sub(i,i)
+		table.insert(b, c:byte())
+	end
+	return b
 end
-
 -- Trim leading and trailing whitespace
 function string.trim(s, ws)
-  ws = ws or ' \t\r\n'
-  return s:gsub('^[' .. ws .. ']+', ''):gsub('[' .. ws .. ']+$', '') .. ''
+	ws = ws or ' \t\r\n'
+	return s:gsub('^['..ws..']+', ''):gsub('['..ws..']+$', '')..''
 end
-
 -- String slicing and searching using [] operator
 local str_meta = getmetatable('')
-local str_meta_index_old = str_meta.__index
-function str_meta.__index(s, k)
-  if type(k) == 'string' then
-    return str_meta_index_old[k]
-  elseif type(k) == 'number' then
-    if k < 0 then k = #s + k + 1 end
-    return string.sub(s, k, k)
-  elseif type(k) == 'table' then
-    local a = k[1] < 0 and (#s + k[1] + 1) or k[1]
-    local b = k[2] < 0 and (#s + k[2] + 1) or k[2]
-    return string.sub(s, a, b)
-  end
+local str_meta_index_old= str_meta.__index
+function str_meta.__index(s,k)
+	if type(k)=='string' then
+		return str_meta_index_old[k]
+	elseif type(k)=='number' then
+		if k<0 then k = #s+k+1 end
+		return string.sub(s,k,k)
+	elseif type(k)=='table' then
+		local a = k[1]<0 and (#s+k[1]+1) or k[1]
+		local b = k[2]<0 and (#s+k[2]+1) or k[2]
+		return string.sub(s,a,b)
+	end
 end
-
 -- String iterator
 function string.chars(s)
-  local i = 0
-  return function()
-    i = i + 1
-    if i <= #s then
-      return s:sub(i, i)
-    else
-      return nil
-    end
-  end
+	local i = 0
+	return function()
+		i = i+1
+		if i<=#s then return s:sub(i,i)
+		else return nil end
+	end
 end
-
 -- Escape sequences
 local defaultEscapes = {
-  ['\\'] = '\\\\',
-  ['\''] = '\\\'',
-  ['\"'] = '\\\"',
-  ['\t'] = '\\t',
-  ['\r'] = '\\r',
-  ['\n'] = '\\n',
-  ['\0'] = '\\0',
+	['\\'] = '\\\\',
+	['\''] = '\\\'',
+	['\"'] = '\\\"',
+	['\t'] = '\\t',
+	['\r'] = '\\r',
+	['\n'] = '\\n',
+	['\0'] = '\\0',
 }
 function string.escape(s, escapes)
-  escapes = escapes or defaultEscapes
-  local t = {}
-  for i = 1, #s do
-    local c = s:sub(i, i)
-    table.insert(t, escapes[c] or c)
-  end
-  return table.concat(t)
+	escapes = escapes or defaultEscapes
+	local t = {}
+	for i=1,#s do
+		local c = s:sub(i,i)
+		table.insert(t, escapes[c] or c)
+	end
+	return table.concat(t)
 end
-
 local defaultEscapeChar = '\\'
 local defaultUnescapes = {
-  ['\\'] = '\\',
-  ['\''] = '\'',
-  ['\"'] = '\"',
-  ['t'] = '\t',
-  ['r'] = '\r',
-  ['n'] = '\n',
-  ['0'] = '\0',
+	['\\'] = '\\',
+	['\''] = '\'',
+	['\"'] = '\"',
+	['t'] = '\t',
+	['r'] = '\r',
+	['n'] = '\n',
+	['0'] = '\0',
 }
 function string.unescape(s, escapeChar, unescapes)
-  escapeChar = escapeChar or defaultEscapeChar
-  unescapes = unescapes or defaultUnescapes
-  local t = {}
-  local inEscape = false
-  for i = 1, #s do
-    local c = s:sub(i, i)
-    if inEscape then
-      table.insert(t, unescapes[c]
-        or error('string.unescape: invalid escape sequence: \''
-          .. escapeChar .. c .. '\''))
-    elseif c == escapeChar then
-      inEscape = true
-    else
-      table.insert(t, c)
-    end
-  end
-  return table.concat(t)
+	escapeChar = escapeChar or defaultEscapeChar
+	unescapes = unescapes or defaultUnescapes
+	local t = {}
+	local inEscape = false
+	for i=1,#s do
+		local c = s:sub(i,i)
+		if inEscape then
+			table.insert(t, unescapes[c]
+				or error('string.unescape: invalid escape sequence: \''
+					..escapeChar..c..'\''))
+		elseif c==escapeChar then
+			inEscape = true
+		else
+			table.insert(t, c)
+		end
+	end
+	return table.concat(t)
 end
 
+
 -- IO
 
 io = io or {}
 -- Read entire file at once, return nil,err if access failed
 function io.readall(filename)
-  local fi, err = io.open(filename, 'rb')
-  if not fi then return nil, err end
-  local s = fi:read("*a")
-  fi:close()
-  return s
+	local fi,err = io.open(filename, 'rb')
+	if not fi then return nil,err end
+	local s = fi:read("*a")
+	fi:close()
+	return s
 end
-
 -- Write data to file all at once, return true if success / false,err if failure
 function io.writeall(filename, data)
-  local fi, err = io.open(filename, 'wb')
-  if not fi then return false, err end
-  fi:write(data)
-  fi:close()
-  return true, nil
+	local fi,err = io.open(filename, 'wb')
+	if not fi then return false,err end
+	fi:write(data)
+	fi:close()
+	return true,nil
 end
 
+
 -- Math
 
 -- Round
 function math.round(x)
-  return math.floor(x + 0.5)
+	return math.floor(x+0.5)
 end
-
 -- Mod that accounts for floating point inaccuracy
-function math.mod(a, b)
-  local m = a % b
-  if m == 0 or math.abs(m) < 1e-15 or math.abs(m - b) < 1e-15 then
-    return 0
-  else
-    return m
-  end
+function math.mod(a,b)
+	local m = a%b
+	if m==0 or math.abs(m)<1e-15 or math.abs(m-b)<1e-15 then return 0
+	else return m end
 end
-
 -- Clamp value between min and max
 function math.clamp(v, n, x)
-  return math.min(x, math.max(v, n))
+	return math.min(x, math.max(v, n))
 end
+
+
+print('  Executed std.lua')

src/util/vector.lua

@@ -1,238 +1,222 @@
+
 -- Vector math class with operators
 local vector_meta
 local vector_new
 local function vector_check(v, n, name, argn)
-  if not v.__is_vector then
-    error('vector ' .. name .. ': argument #' .. (argn or 1)
-      .. ': expected vector, got ' .. type(v), n + 1)
-  end
+	if not v.__is_vector then
+		error('vector '..name..': argument #'..(argn or 1)
+			..': expected vector, got '..type(v), n+1) end
 end
 local function vector_checksamelen(v1, v2, name)
-  vector_check(v1, 3, name, 1)
-  vector_check(v2, 3, name, 2)
-  if #v1 ~= #v2 then
-    error('vector ' .. name .. ': vector lengths do not match (lengths are '
-      .. #v1 .. ' and ' .. #v2 .. ')', 3)
-  end
-  return #v1
+	vector_check(v1, 3, name, 1)
+	vector_check(v2, 3, name, 2)
+	if #v1~=#v2 then
+		error('vector '..name..': vector lengths do not match (lengths are '
+			..#v1..' and '..#v2..')', 3) end
+	return #v1
 end
 local function vector_checklen(v1, v2, name, len)
-  vector_check(v1, 3, name, 1)
-  vector_check(v2, 3, name, 2)
-  if #v1 ~= len or #v2 ~= len then
-    error('vector ' .. name .. ': vector lengths are not ' .. len .. ' (lengths are '
-      .. #v1 .. ' and ' .. #v2 .. ')', 3)
-  end
+	vector_check(v1, 3, name, 1)
+	vector_check(v2, 3, name, 2)
+	if #v1~=len or #v2~=len then
+		error('vector '..name..': vector lengths are not '..len..' (lengths are '
+			..#v1..' and '..#v2..')', 3) end
 end
 local function vector_opnnn(name, op)
-  return function(v1, v2)
-    local len = vector_checksamelen(v1, v2, name)
-    local v3 = {}
-    for i = 1, len do
-      v3[i] = op(v1[i], v2[i])
-    end
-    return vector_new(v3)
-  end
+	return function(v1, v2)
+		local len = vector_checksamelen(v1, v2, name)
+		local v3 = {}
+		for i = 1, len do
+			v3[i] = op(v1[i], v2[i])
+		end
+		return vector_new(v3)
+	end
 end
 local function vector_opnxn(name, op)
-  return function(v1, v2)
-    local v1v = type(v1) == 'table' and v1.__is_vector
-    local v2v = type(v2) == 'table' and v2.__is_vector
-    if v1v and v2v then
-      local len = vector_checksamelen(v1, v2, name)
-      local v3 = {}
-      for i = 1, len do
-        v3[i] = op(v1[i], v2[i])
-      end
-      return vector_new(v3)
-    else
-      if v2v then v1, v2 = v2, v1 end
-      local len = #v1
-      local v3 = {}
-      for i = 1, len do
-        v3[i] = op(v1[i], v2)
-      end
-      return vector_new(v3)
-    end
-  end
+	return function(v1, v2)
+		local v1v = type(v1)=='table' and v1.__is_vector
+		local v2v = type(v2)=='table' and v2.__is_vector
+		if v1v and v2v then
+			local len = vector_checksamelen(v1, v2, name)
+			local v3 = {}
+			for i = 1, len do
+				v3[i] = op(v1[i], v2[i])
+			end
+			return vector_new(v3)
+		else
+			if v2v then v1,v2 = v2,v1 end
+			local len = #v1
+			local v3 = {}
+			for i = 1, len do
+				v3[i] = op(v1[i], v2)
+			end
+			return vector_new(v3)
+		end
+	end
 end
 local function vector_opn0n(name, op)
-  return function(v1)
-    --vector_check(v1, 1, name)
-    local len = #v1
-    local v2 = {}
-    for i = 1, len do
-      v2[i] = op(v1[i])
-    end
-    return vector_new(v2)
-  end
+	return function(v1)
+		--vector_check(v1, 1, name)
+		local len = #v1
+		local v2 = {}
+		for i = 1, len do
+			v2[i] = op(v1[i])
+		end
+		return vector_new(v2)
+	end
 end
-local vector_indices = { x = 1, y = 2, z = 3, w = 4, r = 1, g = 2, b = 3, a = 4 }
+local vector_indices = {x = 1, y = 2, z = 3, w = 4, r = 1, g = 2, b = 3, a = 4}
 local vector_meta = {
-  __is_vector     = true,
-  __index         = function(t, k)
-    if tonumber(k) then
-      return rawget(t, k)
-    elseif vector_indices[k] then
-      return rawget(t, vector_indices[k])
-    else
-      return getmetatable(t)[k]
-    end
-  end,
-  __newindex      = function(t, k, v)
-    if tonumber(k) then
-      rawset(t, k, v)
-    elseif vector_indices[k] then
-      rawset(t, vector_indices[k], v)
-    else
-      return
-    end
-  end,
-  __add           = vector_opnnn('add', function(x1, x2) return x1 + x2 end),
-  __sub           = vector_opnnn('sub', function(x1, x2) return x1 - x2 end),
-  __mul           = vector_opnxn('mul', function(x1, x2) return x1 * x2 end),
-  __div           = vector_opnxn('div', function(x1, x2) return x1 / x2 end),
-  __pow           = vector_opnxn('pow', function(x1, x2) return x1 ^ x2 end),
-  __unm           = vector_opn0n('inv', function(x1) return -x1 end),
-  __concat        = nil,
-  --__len = function(v1) return #v1 end,
-  __len           = nil,
-  __eq            = function(v1, v2)
-    local len = vector_checksamelen(v1, v2, 'equals')
-    for i = 1, len do
-      if v1[i] ~= v2[i] then return false end
-    end
-    return true
-  end,
-  __lt            = nil,
-  __le            = nil,
-  __call          = nil,
-  abs             = vector_opn0n('abs', math.abs),
-  length          = function(v1)
-    --vector_check(v1, 2, 'length')
-    local len = #v1
-    local l = 0
-    for i = 1, len do
-      l = l + v1[i] ^ 2
-    end
-    return math.sqrt(l)
-  end,
-  normalize       = function(v1)
-    --vector_check(v1, 2, 'normal')
-    local length = v1:length()
-    local len = #v1
-    local v3 = {}
-    for i = 1, len do
-      if length == 0 then
-        v3[i] = 0
-      else
-        v3[i] = v1[i] / length
-      end
-    end
-    return vector_new(v3)
-  end,
-  __tostring      = function(v1)
-    --vector_check(v1, 2, 'tostring')
-    local st = {}
-    local len = #v1
-    for i = 1, len do
-      table.insert(st, tostring(v1[i]))
-    end
-    return 'vector{ ' .. table.concat(st, ', ') .. ' }'
-  end,
-  unpack          = function(v1) return unpack(v1) end,
-  floor           = vector_opn0n('floor', function(x1) return math.floor(x1) end),
-  ceil            = vector_opn0n('ceil', function(x1) return math.ceil(x1) end),
-  round           = vector_opn0n('round', function(x1) return math.floor(x1 + 0.5) end),
-  dot             = function(v1, v2)
-    local len = vector_checksamelen(v1, v2, 'dot')
-    local x = 0
-    for i = 1, len do
-      x = x + v1[i] * v2[i]
-    end
-    return x
-  end,
-  cross           = function(v1, v2)
-    vector_checklen(v1, v2, 'cross', 3)
-    return vector_new {
-      v1[2] * v2[3] - v1[3] * v2[2],
-      v1[3] * v2[1] - v1[1] * v2[3],
-      v1[1] * v2[2] - v1[2] * v2[1],
-    }
-  end,
-  rotateByAngleId = function(v1, r)
-    --vector_check(v1, 2, 'rotate')
-    if type(r) ~= 'number' or r % 1 ~= 0 then
-      error('vector rotateByAngleId: invalid rotation ' .. tostring(r), 2)
-    end
-    r = r % 4
-    local v2
-    if r == 0 then
-      v2 = vector_new { v1[1], v1[2], v1[3] }
-    elseif r == 1 then
-      v2 = vector_new { v1[2], -v1[1], v1[3] }
-    elseif r == 2 then
-      v2 = vector_new { -v1[1], -v1[2], v1[3] }
-    elseif r == 3 then
-      v2 = vector_new { -v1[2], v1[1], v1[3] }
-    else
-      error('vector rotateByAngleId: invalid rotation ' .. r, 2)
-    end
-    return v2
-  end,
-  rotateZ         = function(v, r)
-    --vector_check(v, 2, 'rotate2d')
-    if type(r) ~= 'number' then
-      error('vector rotateZ: invalid rotation ' .. tostring(r), 2)
-    end
-    local len = math.sqrt(v[1] ^ 2 + v[2] ^ 2)
-    local ang = math.atan2(v[2], v[1]) + r
-    local v2 = vector_new { math.cos(ang) * len, math.sin(ang) * len }
-    return v2
-  end,
-  tsString        = function(v)
-    --vector_check(v, 2, 'tsString')
-    return table.concat(v, ' ')
-  end,
-  distance        = function(v1, v2)
-    local len = vector_checksamelen(v1, v2, 'distance')
-    local sum = 0
-    for i = 1, len do
-      sum = sum + (v1[i] - v2[i]) ^ 2
-    end
-    return math.sqrt(sum)
-  end,
-  copy            = function(v)
-    --vector_check(v, 2, 'copy')
-    return vector_new(v)
-  end,
+	__is_vector = true,
+	__index = function(t, k)
+		if tonumber(k) then return rawget(t, k)
+		elseif vector_indices[k] then return rawget(t, vector_indices[k])
+		else return getmetatable(t)[k]
+		end
+	end,
+	__newindex = function(t, k, v)
+		if tonumber(k) then rawset(t, k, v)
+		elseif vector_indices[k] then rawset(t, vector_indices[k], v)
+		else return
+		end
+	end,
+	__add = vector_opnnn('add', function(x1, x2) return x1+x2 end),
+	__sub = vector_opnnn('sub', function(x1, x2) return x1-x2 end),
+	__mul = vector_opnxn('mul', function(x1, x2) return x1*x2 end),
+	__div = vector_opnxn('div', function(x1, x2) return x1/x2 end),
+	__pow = vector_opnxn('pow', function(x1, x2) return x1^x2 end),
+	__unm = vector_opn0n('inv', function(x1) return -x1 end),
+	__concat = nil,
+	--__len = function(v1) return #v1 end,
+	__len = nil,
+	__eq = function(v1, v2)
+		local len = vector_checksamelen(v1, v2, 'equals')
+		for i = 1, len do
+			if v1[i]~=v2[i] then return false end
+		end
+		return true
+	end,
+	__lt = nil,
+	__le = nil,
+	__call = nil,
+	abs = vector_opn0n('abs', math.abs),
+	length = function(v1)
+		--vector_check(v1, 2, 'length')
+		local len = #v1
+		local l = 0
+		for i = 1, len do
+			l = l + v1[i]^2
+		end
+		return math.sqrt(l)
+	end,
+	normalize = function(v1)
+		--vector_check(v1, 2, 'normal')
+		local length = v1:length()
+		local len = #v1
+		local v3 = {}
+		for i = 1, len do
+			if length==0 then v3[i] = 0
+			else v3[i] = v1[i]/length end
+		end
+		return vector_new(v3)
+	end,
+	__tostring = function(v1)
+		--vector_check(v1, 2, 'tostring')
+		local st = {}
+		local len = #v1
+		for i = 1, len do
+			table.insert(st, tostring(v1[i]))
+		end
+		return 'vector{ '..table.concat(st, ', ')..' }'
+	end,
+	unpack = function(v1) return unpack(v1) end,
+	floor = vector_opn0n('floor', function(x1) return math.floor(x1) end),
+	ceil  = vector_opn0n('ceil' , function(x1) return math.ceil (x1) end),
+	round = vector_opn0n('round', function(x1) return math.floor(x1+0.5) end),
+	dot = function(v1, v2)
+		local len = vector_checksamelen(v1, v2, 'dot')
+		local x = 0
+		for i = 1, len do
+			x = x + v1[i]*v2[i]
+		end
+		return x
+	end,
+	cross = function(v1, v2)
+		vector_checklen(v1, v2, 'cross', 3)
+		return vector_new{
+			v1[2]*v2[3] - v1[3]*v2[2],
+			v1[3]*v2[1] - v1[1]*v2[3],
+			v1[1]*v2[2] - v1[2]*v2[1],
+		}
+	end,
+	rotateByAngleId = function(v1, r)
+		--vector_check(v1, 2, 'rotate')
+		if type(r)~='number' or r%1~=0 then
+			error('vector rotateByAngleId: invalid rotation '..tostring(r), 2) end
+		r = r%4
+		local v2
+		if     r==0 then v2 = vector_new{  v1[1],  v1[2], v1[3] }
+		elseif r==1 then v2 = vector_new{  v1[2], -v1[1], v1[3] }
+		elseif r==2 then v2 = vector_new{ -v1[1], -v1[2], v1[3] }
+		elseif r==3 then v2 = vector_new{ -v1[2],  v1[1], v1[3] }
+		else error('vector rotateByAngleId: invalid rotation '..r, 2) end
+		return v2
+	end,
+	rotateZ = function(v, r)
+		--vector_check(v, 2, 'rotate2d')
+		if type(r)~='number' then
+			error('vector rotateZ: invalid rotation '..tostring(r), 2) end
+		local len = math.sqrt(v[1]^2 + v[2]^2)
+		local ang = math.atan2(v[2], v[1]) + r
+		local v2 = vector_new{ math.cos(ang)*len, math.sin(ang)*len }
+		return v2
+	end,
+	tsString = function(v)
+		--vector_check(v, 2, 'tsString')
+		return table.concat(v, ' ')
+	end,
+	distance = function(v1, v2)
+		local len = vector_checksamelen(v1, v2, 'distance')
+		local sum = 0
+		for i=1,len do
+			sum = sum + (v1[i] - v2[i])^2
+		end
+		return math.sqrt(sum)
+	end,
+	copy = function(v)
+		--vector_check(v, 2, 'copy')
+		return vector_new(v)
+	end,
 }
 vector_new = function(vi)
-  if vi then
-    if type(vi) == 'string' then
-      local vi2 = {}
-      for val in vi:gmatch('[0-9%.%-e]+') do
-        table.insert(vi2, tonumber(val))
-      end
-      vi = vi2
-    elseif type(vi) ~= 'table' then
-      error('vector: argument #1: expected input table, got ' .. type(vi), 2)
-    end
-    local v = {}
-    if #vi > 0 then
-      for i = 1, #vi do v[i] = vi[i] end
-    else
-      for n, i in pairs(vector_indices) do v[i] = vi[n] end
-      if #v == 0 then
-        error('vector: argument #1: table contains no values', 2)
-      end
-    end
-    setmetatable(v, vector_meta)
-    return v
-  else
-    error('vector: argument #1: expected input table, got nil', 2)
-  end
+	if vi then
+		if type(vi)=='string' then
+			local vi2 = {}
+			for val in vi:gmatch('[0-9%.%-e]+') do
+				table.insert(vi2, tonumber(val))
+			end
+			vi = vi2
+		elseif type(vi)~='table' then
+			error('vector: argument #1: expected input table, got '..type(vi), 2)
+		end
+		local v = {}
+		if #vi>0 then
+			for i = 1, #vi do v[i] = vi[i] end
+		else
+			for n, i in pairs(vector_indices) do v[i] = vi[n] end
+			if #v==0 then
+				error('vector: argument #1: table contains no values', 2)
+			end
+		end
+		setmetatable(v, vector_meta)
+		return v
+	else
+		error('vector: argument #1: expected input table, got nil', 2)
+	end
 end
 
 vector = vector_new
+
+print('  Executed vector.lua')
+
 return vector_new