C.74.  $world->requireplugin


$world->requireplugin function: REQUIREs a PLUGIN to be loaded

$success = $world->requireplugin( name );

This function is similar to $world->loadplugin , but first checks if the plugin is already loaded. If it is, it returns successfully. If not, it tries loading the plugin (silently). If this succeeds, the function returns successfully, if not, it die()'s. This function is useful in plugins that require other plugins, and is meant to be called in a BEGIN block of a plugin that requires another.

The argument passed must be the name of the plugin (a path to the file is not allowed, unlike with $world->loadplugin . See $world->loadplugin for information on how plugins are found.