function power_cost_doors()
{
    level.power_cost_door_time = 2;

    trigs = GetEntArray("power_cost_door_trig");
    for(i=0;i<trigs.size;i++)
    {
        trigs[i] SetHintString(&"ZOMBIE_NEED_POWER");
        trigs[i] thread wait_for_power();
    }
}
function wait_for_power()
{
    self endon("real_door_activated");
    level flag::wait_till("power_on");
    self SetHintString("Press and Hold ^3[{+activate}]^7 to Buy Door [Cost: " + self.zombie_cost + " ]");

    door_parts = GetEntArray(self.target,"targetname");
    door_parts[0].bought = false;

    while(1)
    {
        self waittill("trigger",player);
        if(player.score >= self.zombie_cost)
        {
            player zm_score::minus_to_player_score(self.zombie_cost);
            zm_utility::play_sound_at_pos( "purchase", self.origin );

            if( isdefined( self.script_flag ))
            {
                tokens = Strtok( self.script_flag, "," );
                for ( i=0; i<tokens.size; i++ )
                {
                    level flag::set( tokens[i] );
                }
            }

            door_parts = GetEntArray(self.target,"targetname");
            for(i=0;i<door_parts.size;i++)
            {
                if(isDefined(door_parts[i].script_vector))
                {
                    door_parts[i] MoveTo(door_parts[i].origin + door_parts[i].script_vector, level.power_cost_door_time);
                }
                if(isDefined(door_parts[i].target))
                {
                    door_parts[i] MoveTo(door_parts[i].target.origin, level.power_cost_door_time);
                }
            }
            door_parts[0].bought = true;
            self Delete();
        }
        else
        {
            zm_utility::play_sound_at_pos( "no_purchase", self.origin );
            player zm_audio::create_and_play_dialog( "general", "outofmoney" );
        }
        wait(0.05);
    }

}
function check_if_door_target()
{
    door_parts = GetEntArray(self.target,"targetname");
    while(1)
    {
        if(door_parts[0].bought == true)
        {
            self notify("real_door_activated");
            self Delete();
            break;
        }
        wait(0.05);
    }
}