function widget:GetInfo()
  return {
    name      = "coordinates helper v1",
    desc      = "(for mapmarkers) helps with finding the correct coordinates when placing rocks by logging marker coordinates into file",
    author    = "knorke",
    date      = "9 Nov 2010",
    license   = "GNU GPL, v2 or later or horse",
    layer     = 0,
    enabled   = false,  --  loaded by default?
  }
end

local coordfile = nil

local function log_coord (px, py, pz, label)
local coordfile_fn = Game.mapName .. "_coordinates.txt"
if (coordfile==nil) then
        coordfile = io.open (coordfile_fn, "w")
        if (coordfile) then Spring.Echo ("tp_coordinate:  coordinate logfile opened: " .. coordfile_fn) else Spring.Echo ("tp_coordinate:  failed to open " .. coordfile_fn) end
end

if (label==nil) then label = "" end
local coordtext = "XZ (" .. px .." , " .. pz .. ")" .. "   -- " .. label
--local coordtext = "waypoints[tn][1] = {x=" ..px.." , " .. "z="..pz .. "}  --" ..label
coordfile:write (coordtext .. "\n")
--Spring.Echo ("tp_coordinate:" ..coordtext)
coordfile:flush()
end

function widget:Initialize()
Spring.Echo ("tp_coordinate: place markers on the map to log their coordinates")
log_coord (123,123, "yoyo!")
end

function widget:MapDrawCmd(playerID, cmdType, px, py, pz, label)
log_coord (px, py, pz, label)
end
--[[
function widget:UnitCreated(unitID, unitDefID, teamID, builderID)
    local x,y,z=Spring.GetUnitPosition (unitID)
    if (x and y and z) then
        local coordtext = "XYZ (" .. x .. " , " .. math.floor(y) .. " , " .. z .. ")"
        coordfile:write (coordtext .. "\n")
        coordfile:flush()
    end
end
--]]