// Cast spell nSpell at lTargetLocation.
// - nSpell: SPELL_*
// - lTargetLocation
// - nMetaMagic: METAMAGIC_*
// - bCheat: If this is TRUE, then the executor of the action doesn't have to be
// able to cast the spell.
// - nDomainLevel: TBD - SS
// - nProjectilePathType: PROJECTILE_PATH_TYPE_*
// - bInstantSpell: If this is TRUE, the spell is cast immediately; this allows
// the end-user to simulate
// a high-level magic user having lots of advance warning of impending trouble.
void ActionCastSpellAtLocation(int nSpell, location lTargetLocation, int nMetaMagic=METAMAGIC_ANY, int bCheat=FALSE, int nProjectilePathType=PROJECTILE_PATH_TYPE_DEFAULT, int bInstantSpell=FALSE, int nDomainLevel=0);