// When zombies bash a door, a certain number of "bash points" are lost.
// When this number falls under zero the door opens and all zombies currently attacking
// the door will return to chasing their original target.
// If that target is no longer in the same area, the zombies will simply return to randomly walking.

void main()
{
    object oDoor = OBJECT_SELF;
    int iBashPoints = GetLocalInt(oDoor, "DOOR_BASH_POINTS");

    // Door needs to be initialized
    if(iBashPoints == 0)
    {
        SetLocalInt(oDoor, "DOOR_BASH_POINTS", 7);
        return;
    }

    // Reduce by two to prevent initialization from firing again
    iBashPoints = iBashPoints - 2;
    if(iBashPoints < 0 || GetIsOpen(oDoor))
    {
        SetLocalInt(oDoor, "DOOR_BASH_POINTS", 9);

        // Open door if it's not already open (PC may have opened it)
        if(!GetIsOpen(oDoor))
            AssignCommand(oDoor, ActionOpenDoor(oDoor));

        int iCurrentZombie = 1;
        object oZombie = GetNearestObject(OBJECT_TYPE_CREATURE, oDoor, iCurrentZombie);


        // All zombies currently attacking this door will return to their original target once
        // the door opens.
        while(GetIsObjectValid(oZombie))
        {
            if(GetAttackTarget(oZombie) == oDoor)
            {
                AssignCommand(oZombie, ClearAllActions(TRUE));
            }

            iCurrentZombie++;
            oZombie = GetNearestObject(OBJECT_TYPE_CREATURE, oDoor, iCurrentZombie);
        }
    }
    // Update the door's bash points
    else
    {
        SetLocalInt(oDoor, "DOOR_BASH_POINTS", iBashPoints);
    }
}