Is there a lua function to get a list of all map objects’ ID’s in a zone?

[GTFreeFlyer]

I’m not looking for a list of dead map objects in zone. I already know about that function.

 

I’m looking to place a trigger zone over a town and get a table (list) of object ID’s of all existing buildings, bridges, etc.

 

Any ideas?

Thanks!

[davidp57]

This may help :

---
--- lists all units and statics (and their groups names) in a trigger zone
---
function veafCombatZone.findUnitsInTriggerZone(triggerZoneName)
   local triggerZone = trigger.misc.getZone(triggerZoneName)
   
   local units_by_name = {}
   local l_units = mist.DBs.units	--local reference for faster execution
   local units = {}
   local groupNames = {}
   local alreadyAddedGroups = {}
   local zoneCoordinates = {}
   zoneCoordinates = {radius = triggerZone.radius, x = triggerZone.point.x, y = triggerZone.point.y, z = triggerZone.point.z}
   
   -- the following code is liberally adapted from MiST (thanks Grimes !)
   for coa, coa_tbl in pairs(l_units) do
       for country, country_table in pairs(coa_tbl) do
           for unit_type, unit_type_tbl in pairs(country_table) do
               if type(unit_type_tbl) == 'table' then
                   for group_ind, group_tbl in pairs(unit_type_tbl) do
                       if type(group_tbl) == 'table' then
                           for unit_ind, mist_unit in pairs(group_tbl.units) do
                               local unitName = mist_unit.unitName
                               local unit = Unit.getByName(unitName)
                               if not unit then 
                                   unit = StaticObject.getByName(unitName)
                               end
                               if unit then
                                   local unit_pos = unit:getPosition().p
                                   if unit_pos then
                                       if (((unit_pos.x - zoneCoordinates.x)^2 + (unit_pos.z - zoneCoordinates.z)^2)^0.5 <= zoneCoordinates.radius) then
                                           veafCombatZone.logTrace(string.format("adding unit [%s]", unitName))
                                           veafCombatZone.logTrace(string.format("unit:getCategory() = [%d]", unit:getCategory()))
                                           local groupName = nil
                                           if (unit:getCategory() == 3) or (unit:getCategory() == 4) then
                                               groupName = unitName -- default for static objects = groups themselves
                                           else
                                               groupName = unit:getGroup():getName()
                                           end
                                           veafCombatZone.logTrace(string.format("groupName = %s", groupName))
                                           if string.sub(groupName:upper(),1,string.len(triggerZoneName))==triggerZoneName:upper() then
                                               units[#units + 1] = unit
                                               if not alreadyAddedGroups[groupName] then 
                                                   alreadyAddedGroups[groupName] = groupName
                                                   groupNames[#groupNames + 1] = groupName
                                               end
                                           end
                                       end
                                   end
                               end
                           end
                       end
                   end
               end
           end
       end
   end

[GTFreeFlyer]

Have you tried it out or did you just find it? Units and statics are different than map objects when trying to use the lua functions to find things. Just curious if you got it working with map objects.

[Grimes]

https://wiki.hoggitworld.com/view/DCS_func_searchObjects

 

Change the object catergory to Object.Category.SCENERY and just save the object itself, so change foundItem:getName() to foundItem.

[GTFreeFlyer]

https://wiki.hoggitworld.com/view/DCS_func_searchObjects

 

Change the object catergory to Object.Category.SCENERY and just save the object itself, so change foundItem:getName() to foundItem.

 

 

You rock dude! And thanks for the other help the other day. I got it working :)

[GTFreeFlyer]

Thanks Grimes, it worked perfectly.

 

 

Now I'm trying to compare locations of two scenery objects, but I'm not sure this is possible. There is no VEC3 or any other information attached to the object other than its ID number. I see that when building the list of found objects, the return is...

 

 

{{id_ = 1234567}, {id_ = 2345456}, {id_ = 92847476}, ...}

 

 

No way to find the coordinates of a scenery object if all you have is its ID number, correct?

[davidp57]

Have you tried it out or did you just find it? Units and statics are different than map objects when trying to use the lua functions to find things. Just curious if you got it working with map objects.

 

Oh sorry, I did misread "objects", without the "map" part !

[Grimes]

Thanks Grimes, it worked perfectly.

 

 

Now I'm trying to compare locations of two scenery objects, but I'm not sure this is possible. There is no VEC3 or any other information attached to the object other than its ID number. I see that when building the list of found objects, the return is...

 

 

{{id_ = 1234567}, {id_ = 2345456}, {id_ = 92847476}, ...}

 

 

No way to find the coordinates of a scenery object if all you have is its ID number, correct?

 

That is the object. Like from my sample on the wiki it runs getName() for the units it finds. You can also use foundItem:getPoint() for the location of it.

[GTFreeFlyer]

That is the object. Like from my sample on the wiki it runs getName() for the units it finds. You can also use foundItem:getPoint() for the location of it.

 

 

Oh duh. Not sure what I was thinking there. Cheers.