Function casting_is_useless

crawl-ref/source/spl-util.cc:1177–1180

* Casting-specific checks that are involved when casting any spell. Includes * MP (which does use the spell level if provided), confusion state, banned * schools. * * @param spell The spell in question. * @param temp Include checks for volatile or temporary states * (status effects, mana) * @return Whether casting is useless */

 * @return           Whether casting is useless
 */
bool casting_is_useless(spell_type spell, bool temp)
{
    return !casting_uselessness_reason(spell, temp).empty();
}

/**
 * Casting-specific checks that are involved when casting any spell or larger