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function gadget:GetInfo()
   return {
      name      = "Laser Designator",
      desc      = "",
      author    = "quantum",
      date      = "May 2010",
      license   = "GNU GPL, v2 or later",
      layer     = 5,
      enabled   = true
   }
end

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if gadgetHandler:IsSyncedCode() then



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local Spring, pairs, ipairs = Spring, pairs, ipairs

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local damageMult = 1
local duration = 0.5 * 30 -- in frames


GG.targets = {}
local targets = GG.targets
local designatorWeaponIDs = {}

for i = 1, #WeaponDefs do
  if WeaponDefs[i].customParams.designator then
    designatorWeaponIDs[WeaponDefs[i].id] = true
  end
end

--[[
local targetingLinks = {}
local targetDesignators = {}
--]]

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local function raiseLaserEvent(eventArgs)
  _G.laserEventArgs = eventArgs
  SendToUnsynced("LaserEvent")
  _G.laserEventArgs = nil
end


function gadget:UnitPreDamaged(unitID, unitDefID, unitTeam, damage, paralyzer, weaponID, attackerID, attackerDefID, attackerTeam)
  if weaponID and designatorWeaponIDs[weaponID] and GG.creeps[unitID] then -- hit by a laser designator
    if not targets[unitID] then
      targets[unitID] = {expiration = Spring.GetGameFrame() + duration}
      raiseLaserEvent{addTarget = true, unitID = unitID}
      for turretID in pairs(GG.turrets) do -- make every turret attack the designated unit
        Spring.SetUnitTarget(turretID, unitID)
      end
    end
  end
  return damage
end


function gadget:GameFrame(frame)
  if frame % 23 == 0 then
    for unitID, unitInfo in pairs(targets) do
      if unitInfo.expiration < frame then
        targets[unitID] = nil
        raiseLaserEvent{removeTarget = true, unitID = unitID}
      end
    end
  end
end


function gadget:UnitDestroyed(unitID)
  if targets[unitID] then
    targets[unitID] = nil
    raiseLaserEvent{removeTarget = true, unitID = unitID}
  end
end

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else
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--- Unsynced
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local function drawTarget()
  gl.Color(1, 1, 1, 1)
  gl.PushMatrix()
  gl.Billboard()
  gl.Texture("bitmaps/gpl/point2.png")
  gl.TexRect(-8, -8, 8, 8)
  gl.PopMatrix()
end

function gadget:Initialize()
  gadgetHandler:AddSyncAction("LaserEvent", HandleLaserEvent)
end

local targets = {}

function HandleLaserEvent()
  local eventArgs = {}
  for k, v in spairs(SYNCED.laserEventArgs) do
    eventArgs[k] = v
  end
  if eventArgs.addTarget then
    targets[eventArgs.unitID] = true
  elseif eventArgs.removeTarget then
    targets[eventArgs.unitID] = nil
  end
end


function gadget:DrawWorld()
  for unitID in pairs(targets) do
    gl.DrawFuncAtUnit(unitID, false, drawTarget)
  end
end



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end