add vector check

init.lua

@@ -30,6 +30,8 @@ for _,file in pairs({"metadata", "inventory", "player"}) do
 	loadfile(path.."/"..file..".lua")(check, secure_table)
 end
 
+dofile(path.."/misc.lua")
+
 if minetest.is_singleplayer() then
 	minetest.register_chatcommand("fakelib_test", {
 		description = "Test fakelib's API.",

misc.lua

@@ -0,0 +1,10 @@
+
+function fakelib.is_vector(x, add_metatable)
+	if type(x) ~= "table" or type(x.x) ~= "number" or type(x.y) ~= "number" or type(x.z) ~= "number" then
+		return false
+	end
+	if add_metatable and getmetatable(x) ~= vector.metatable then
+		setmetatable(x, vector.metatable)
+	end
+	return true
+end

player.lua

@@ -26,10 +26,10 @@ function fakelib.create_player(options)
 		if type(options.name) == "string" then
 			data.name = options.name
 		end
-		if type(options.position) == "table" then
+		if fakelib.is_vector(options.position) then
 			data.position = vector.copy(options.position)
 		end
-		if type(options.direction) == "table" then
+		if fakelib.is_vector(options.direction) then
 			local dir = vector.normalize(options.direction)
 			data.pitch = -math.asin(dir.y)
 			data.yaw = math.atan2(-dir.x, dir.z) % (math.pi * 2)