Historically, rot.js was adding several new methods to JavaScript primordial objects: Array
, String
, Number
, Date
, Object
and Function
. This behavior is now frowned upon, so some of the provided functionality is now moved to the dedicated ROT.Util
namespace.
A more verbose explanation about how ROT.Util.format
works is available on a dedicated string formatting page.
The built-in modulus operator (%) yields negative results for negative arguments. Number.prototype.mod
is guaranteed to return a positive value.
A numeric value often needs to be clamped into a useful range: