how to create lights

gfx_map_lights.lua

function widget:GetInfo()
    return {
        name	= "MapLights",
        desc	= "Adds static lights to maps",
        author	= "Beherith",
        date	= "2020",
        license	= "GNU GPL, v2 or later",
        layer	= 5,
        enabled	= false,
    }
end


-- a table of lights
-- Important: the A param is a multiplier to the power of the light (mults RGB). 
-- RGBA is NOT clamped to [0;1]
-- falloffsquared = 1 is default, is a term multiplied with the squared distance of the light when attenuating it
--    higher values decrease the amount of light in areas far away from the light source
--    Values of ~ 1.5 are recommended when using HUGE area lights (which fall WAY outside the use case of deferred rendering anyway, and are not very performant either)

local maplights = {
    -- redcomet remake
    --{lightname = 'maplight1', lightID = nil, pos = {2286, 425, 2429}, rgba = {0.4, 0.15, 0.05, 2}, radius = 1250,falloffsquared = 1.5},
    --{lightname = 'maplight2', lightID = nil, pos = {3847, 425, 1596}, rgba = {0.4, 0.15, 0.05, 2}, radius = 1250,falloffsquared = 1.5},

    -- altored divide
  --  {lightname = 'fireflies-center', lightID = nil, pos = {3000, 250, 4250}, rgba = {0.3, 0.32, 0.07, 2}, radius = 1000,falloffsquared = 1.5},
  --  {lightname = 'fireflies-right', lightID = nil, pos = {7370, 300, 4000}, rgba = {0.3, 0.32, 0.07, 2}, radius = 1000,falloffsquared = 1.5},
  --  {lightname = 'fireflies-top', lightID = nil, pos = {3410, 250, 3595}, rgba = {0.3, 0.32, 0.07, 1.2}, radius = 600,falloffsquared = 1.0},
 --   {lightname = 'statues-low', lightID = nil, pos = {765, 300, 4329}, rgba = {0.32, 0.22, 0.07, 2}, radius = 1150,falloffsquared = 1.5},
    {lightname = 'statues-high', lightID = nil, pos = {955, 300, 3462}, rgba = {0.32, 0.22, 0.07, 10.0}, radius = 1150,falloffsquared = 0.01},
--    {lightname = 'mountain', lightID = nil, pos = {5482, 500, 4733}, rgba = {0.49, 0.48, 0.45, 1.5}, radius = 1150,falloffsquared = 1.5},
  --  {lightname = 'dark', lightID = nil, pos = {4000, 500, 4800}, rgba = {0.13,0.17,0.05, 2}, radius = 3000,falloffsquared = 1.7},
  } 


function widget:Initialize()
  --Spring.Echo("Loading Maplights")
  --Spring.Echo(WG, WG['lighteffects'], WG['lighteffects'].createLight,Script.LuaUI("GadgetCreateLight"))
  if (WG and WG['lighteffects'] and WG['lighteffects'].createLight) or Script.LuaUI("GadgetCreateLight") then
    
    for _, lightparams in pairs(maplights) do
  
      if WG then
        lightparams.lightID = WG['lighteffects'].createLight(
          lightparams.lightname,
          lightparams.pos[1],
          lightparams.pos[2],
          lightparams.pos[3],
          lightparams.radius,
          lightparams.rgba,
          lightparams.falloffsquared
          )
      else
          lightparams.lightID = Script.LuaUI.GadgetCreateLight(
          lightparams.lightname,
          lightparams.pos[1],
          lightparams.pos[2],
          lightparams.pos[3],
          lightparams.radius,
          lightparams.rgba,
          lightparams.falloffsquared
          )
      end
    end
  end
end

function widget:Shutdown()
  for _, lightparams in pairs(maplights) do
  	if lightparams.lightID and ((WG and WG['lighteffects'] and WG['lighteffects'].removeLight) or Script.LuaUI("GadgetRemoveLight")) then
      if WG then
        WG['lighteffects'].removeLight(lightparams.lightID)
      else
        Script.LuaUI.GadgetRemoveLight(lightparams.lightID)
      end
    end
  end
end