/**
    hb_usecatapult

    OnHeartbeat: While in battle and not engaged in hand-to-hand, return to your
    catapult and fire a shot

    J.D. Robertson, 2002
*/
#include "i_battle"
void main()
{
    if (InBattle() && !GetIsInCombat())
    {
        object catapult = GetLocalObject(OBJECT_SELF, "MyCatapult");
        if (GetIsObjectValid(catapult))
            ActionDoCommand(DoPlaceableObjectAction(catapult, PLACEABLE_ACTION_USE));
    }
}