airbases.lua

local logger = CinCLogger
local world = world
local ipairs = ipairs
local coord = coord
local coroutine = coroutine
local atmosphere = atmosphere
local math = math

local command = function (_)
  logger.info("Command get_airbases called")
  local airfield_loop = coroutine.create(function()
    local data = world.getAirbases()
    local result = {}
   
    for i, v in ipairs(data) do
    
      local airbase_properties = {}
      airbase_properties["id"] = v:getID()
      airbase_properties["name"] = v:getName()
      airbase_properties["category"] = v:getDesc()['category'] 
      airbase_properties["coalition"] = v:getCoalition()
      
      local latitude, longitude, altitude = coord.LOtoLL(v:getPoint())   
      airbase_properties["latitude"] = latitude
      airbase_properties["longitude"] = longitude
      airbase_properties["altitude"] = altitude
      
      -- Taken from https://github.com/VEAF/VEAF-Mission-Creation-Tools/blob/master/src/scripts/veaf/veaf.lua#L402 by Zip    
  
      -- Get wind velocity vector
      local point = v:getPoint()
      
      -- Add some height to make sure we don't get 0 AGL because that is ground level which DCS considers invalid.  
      -- Also real world ATIS measures 10 meters up which is handy.
      point.y = point.y + 10
      local windvec3  = atmosphere.getWind(point)
      local direction = math.deg(math.atan2(windvec3.z, windvec3.x))
    
      if direction < 0 then
        direction = direction + 360
      end
    
      -- Convert TO direction to FROM direction. 
      if direction > 180 then
        direction = direction-180
      else
        direction = direction+180
      end
    
      -- Calc 2D strength.
      local strength = math.sqrt((windvec3.x)^2+(windvec3.z)^2)
  
      airbase_properties["wind_heading"] = direction 
      airbase_properties["wind_speed"] = strength -- m/s
  
      result[i] = airbase_properties
      coroutine.yield()
    end
    
    return result
  end)
  
  return coroutine.resume(airfield_loop)
 
end

CinCServer.add_command('get_airbases', command)