Add file.existsInGame and game.modelExists (#1953)

* Add file.existsInGame

* Add game.modelExists

lua/starfall/libs_cl/file.lua

@@ -6,6 +6,7 @@ registerprivilege("file.read", "Read files", "Allows the user to read files from
 registerprivilege("file.write", "Write files", "Allows the user to write files to data/sf_filedata directory", { client = { default = 1 } })
 registerprivilege("file.writeTemp", "Write temporary files", "Allows the user to write temp files to data/sf_filedatatemp directory", { client = {} })
 registerprivilege("file.exists", "File existence check", "Allows the user to determine whether a file in data/sf_filedata exists", { client = { default = 1 } })
+registerprivilege("file.existsInGame", "File existence check", "Allows the user to determine whether a file in game dir exists", { client = { default = 1 } })
 registerprivilege("file.isDir", "Directory check", "Allows the user to determine whether a file in data/sf_filedata is a directory", { client = { default = 1 } })
 registerprivilege("file.find", "File find", "Allows the user to see what files are in data/sf_filedata", { client = { default = 1 } })
 registerprivilege("file.findInGame", "File find in garrysmod", "Allows the user to see what files are in garrysmod", { client = { default = 1 } })
@@ -319,6 +320,15 @@ function file_library.exists(path)
 	return file.Exists("sf_filedata/" .. SF.NormalizePath(path), "DATA")
 end
 
+--- Checks if a file exists in path relative to gmod
+-- @param string path Filepath in game folder
+-- @return boolean? True if exists, false if not, nil if error
+function file_library.existsInGame(path)
+	checkpermission (instance, path, "file.existsInGame")
+	checkluatype (path, TYPE_STRING)
+	return file.Exists(SF.NormalizePath(path), "GAME")
+end
+
 --- Checks if a given file is a directory or not
 -- @param string path Filepath relative to data/sf_filedata/.
 -- @return boolean True if given path is a directory, false if it's a file

lua/starfall/libs_sh/game.lua

@@ -98,6 +98,16 @@ game_library.getRealTickInterval = engine.AbsoluteFrameTime
 -- @return number Ticks
 game_library.getTickCount = engine.TickCount
 
+--- Checks if a model exists in the game files
+-- @param string path Filepath in game folder
+-- @return boolean? True if exists, false if not, nil if error
+function game_library.modelExists(path)
+	checkluatype (path, TYPE_STRING)
+	path = SF.NormalizePath(path)
+	if string.find(path, "models/", 1, true)~=1 then return false end
+	return file.Exists(path, "GAME")
+end
+
 --- Returns AmmoData for given id
 -- @param number id See https://wiki.facepunch.com/gmod/Default_Ammo_Types
 -- @return table AmmoData, see https://wiki.facepunch.com/gmod/Structures/AmmoData