IsHasBuilding

Description

pCity:IsHasBuilding(buildingID)

Returns true if a subject city has a building with a specified ID

Example

(from Culture per Population mod)

 -- culturePerPopulation
 -- Author: Moriboe
 -- DateCreated: 12/28/2011
 --------------------------------------------------------------
 
 -- add culture when wonder completed
 function CulturePerPop(iPlayer)
   local buildingID, buildingTime;
   local player = Players[iPlayer];
   if IsValidPlayer(player) then
     for pCity in player:Cities() do
       for row in GameInfo.Building_CultureChangePerPop() do
         -- has wonder?
         buildingID = GameInfo.Buildings[row.BuildingType].ID;
         if pCity:IsHasBuilding(buildingID) then
           -- just built?
           buildingTime = pCity:GetBuildingOriginalTime(buildingID);
           if buildingTime == Game:GetGameTurnYear() then
             pCity:ChangeJONSCulturePerTurnFromBuildings(
               math.floor(pCity:GetPopulation() / row.Pop * row.Culture));
           end
         end
       end
     end
   end
 end
 
 -- add/remove culture upon population change
 function ChangePopCulture(iX, iY, oldPopulation, newPopulation)
   local pCity = Map.GetPlot(iX, iY):GetPlotCity();
   local oldCulture, newCulture, change = 0;
   for row in GameInfo.Building_CultureChangePerPop() do
     if pCity:IsHasBuilding(GameInfo.Buildings[row.BuildingType].ID) then
       oldCulture = math.floor(oldPopulation * row.Culture / row.Pop);
       newCulture = math.floor(newPopulation * row.Culture / row.Pop);
       pCity:ChangeJONSCulturePerTurnFromBuildings(newCulture - oldCulture);
     end
   end
 end

 -- add culture upon capture
 function SetPopCulture(playerID, bCapital, iX, iY, newPlayerID)
   local pCity = Map.GetPlot(iX, iY):GetPlotCity();
   for row in GameInfo.Building_CultureChangePerPop() do
     if pCity:IsHasBuilding(GameInfo.Buildings[row.BuildingType].ID) then
       pCity:ChangeJONSCulturePerTurnFromBuildings(
         math.floor(pCity:GetPopulation() / row.Pop * row.Culture));
     end
   end
 end
 
 function IsValidPlayer(player)
   return player ~= nil and player:IsAlive() and not player:IsBarbarian()
 end
  
 GameEvents.PlayerDoTurn.Add( CulturePerPop );
 GameEvents.SetPopulation.Add( ChangePopCulture );
 GameEvents.CityCaptureComplete.Add( SetPopCulture );