function widget:GetInfo()
  return {
    name      = "Mex Defense (v1.0)",
    desc      = "automates constructors to build basic defenses next to every mex built",
    author    = "AutoWar",
    date      = "2015",
    license   = "GNU GPL, v2 or later",
    layer     = 9999,
    enabled   = true
  }
end

-----------------------------------------------------------------

local spGetUnitNearestEnemy = Spring.GetUnitNearestEnemy
local spGetAllUnits			= Spring.GetAllUnits	--( ) -> nil | unitTable = { [1] = number unitID, ... }
local spMarkerAddPoint		= Spring.MarkerAddPoint
local spEcho				= Spring.Echo
local spInsertUnitCmdDesc   = Spring.InsertUnitCmdDesc
local spGetUnitAllyTeam     = Spring.GetUnitAllyTeam
local spValidUnitID         = Spring.ValidUnitID
local spGetUnitPosition     = Spring.GetUnitPosition
local spGetUnitDefID        = Spring.GetUnitDefID
local spGiveOrderToUnit     = Spring.GiveOrderToUnit
local spGetUnitStates       = Spring.GetUnitStates
local spGiveOrderToUnitArray= Spring.GiveOrderToUnitArray
local spGetUnitIsDead 		= Spring.GetUnitIsDead
local spValidUnitID			= Spring.ValidUnitID
local spGetTeamUnits		= Spring.GetTeamUnits  --( number teamID ) -> nil | unitTable = { [1] = number unitID, etc... }
local spGetMyTeamID			= Spring.GetMyTeamID
local spGetMyAllyTeamID		= Spring.GetMyAllyTeamID
local spIsUnitIcon			= Spring.IsUnitIcon
local myAllyID = Spring.GetMyAllyTeamID()
local myTeamID = Spring.GetMyTeamID()
local CMD_ATTACK = CMD.ATTACK
local CMD_MOVE = CMD.MOVE
local CMD_UNIT_SET_TARGET = 34923
local spGetAllyTeamList			= Spring.GetAllyTeamList	--( ) -> { [1] = number allyTeamID, etc... }
local spGetTeamList				= Spring.GetTeamList		--( [number allyTeamID = -1] ) -> nil | { [1] = number teamID, etc... }
local spGetUnitTeam				= Spring.GetUnitTeam		--( number unitID ) -> nil | number teamID
local CMD_LOAD_UNITS			= CMD.LOAD_UNITS			-- expect 1 parameter in return (unitid) or 4 parameters in return (mappos+radius)
local spGetUnitTransporter		= Spring.GetUnitTransporter	--( number unitID ) -> nil | number unitID
local spGetUnitIsTransporting	= Spring.GetUnitIsTransporting --( number unitID ) -> nil | { [1] = number unitID, etc... }
local spGetUnitHealth			= Spring.GetUnitHealth 		--( number unitID ) -> nil | number health, number maxHealth, number paralyzeDamage, number captureProgress, number buildProgress
local spGetUnitIsStunned		= Spring.GetUnitIsStunned 	--( number unitID ) -> nil | boolean stunned_or_inbuild, boolean stunned, boolean inbuild
local spGetUnitRulesParam		= Spring.GetUnitRulesParam	--( number unitID, number index | string ruleName ) -> nil | number value | string value
local CMD_OPT_SHIFT				= CMD.OPT_SHIFT				--If the unit is working down a shift queue, add it seemless into it
local CMD_INSERT				= CMD.INSERT
local spGetCommandQueue			= Spring.GetCommandQueue	--( number unitID, number count = 0 ) -> nil | number commandQueueSize,  ( number unitID [, number count = -1] ) -> nil | table commandQueueTable = {[1] = {("id"=number),("params"={ [1]=number, ...}),("options"={"coded"=number,"alt"=boolean,"ctrl"=boolean,"shift"=boolean,"right"=boolean,"internal"=boolean,"meta"=boolean}}), ...}
local spGetSelectedUnits		= Spring.GetSelectedUnits	--( ) -> { [1] = unitID, ... }
local spGetGroundHeight			= Spring.GetGroundHeight	--(x,z)

-----------------------------------------------------------------



-----------------------------------------------------------------

local function Distance(x1,z1,x2,z2)
	return math.sqrt((x1-x2)^2 + (z1-z2)^2)
end

local function GetUnitName(unitID)
	if spValidUnitID(unitID)==true and spGetUnitDefID(unitID) then
		return UnitDefs[spGetUnitDefID(unitID)].name
	end
end

-----------------------------------------------------------------

function widget:UnitCreated(unitID, unitDefID, unitTeam, builderID)
	if unitDefID==UnitDefNames["cormex"].id then
		local x,y,z = spGetUnitPosition (unitID)
		--Spring.GiveOrderToUnit(builderID, -UnitDefNames["corllt"].id, {x+50,0,z}, {"shift"})
		spGiveOrderToUnit(builderID, CMD.INSERT, {1, -UnitDefNames["corllt"].id, CMD.OPT_SHIFT, x+50,0,z}, {"alt"})
		spGiveOrderToUnit(builderID, CMD.INSERT, {1, -UnitDefNames["corrad"].id, CMD.OPT_SHIFT, x-50,0,z}, {"alt"})
		spGiveOrderToUnit(builderID, CMD.INSERT, {1, -UnitDefNames["armwin"].id, CMD.OPT_SHIFT, x-100,0,z}, {"alt"})
		if spGetGroundHeight(x,z)<=0 then
		spGiveOrderToUnit(builderID, CMD.INSERT, {1, -UnitDefNames["turrettorp"].id, CMD.OPT_SHIFT, x+100,0,z}, {"alt"})
		end
	end
end



--[[

Mex Defense

automates the constructor to build an LLT , radar, wind gen, and on sea an urchin, next to every mex built

]]