game_messages.lua

function widget:GetInfo()
  return {
    name      = "TeamDiedMessages",
    desc      = "Prints a message when a team die",
    author    = "abma & zwzsg",
    date      = "Sep, 2013",
    license   = "GNU GPL, v2 or later",
    layer     = 5,
    enabled   = true
  }
end

local sec = "game_messages.lua" -- log section
local msgsfile = "gamedata/messages.tdf"

local luaMsgs = {}

function widget:Initialize()
    local TDF = VFS.Include('gamedata/parse_tdf.lua')
    if (not VFS.FileExists(msgsfile)) then
        Spring.Log(sec, LOG.INFO, "gamedata/messages.tdf doesn't exist.")
        return
    end

    local tdfMsgs, err = TDF.Parse(msgsfile)
    if (tdfMsgs == nil) then
        Spring.Log(sec, LOG.ERROR, 'Error parsing '.. msgsfile  .. err)
    end
    if (type(tdfMsgs.messages) ~= 'table') then
        Spring.Log(sec, LOG.ERROR, 'Missing "messages" section in ' .. msgsfile )
    end

    for label, msgs in pairs(tdfMsgs.messages) do
        if ((type(label) == 'string') and (type(msgs)  == 'table')) then
            local msgArray = {}
            for _, msg in pairs(msgs) do
                if (type(msg) == 'string') then
                    table.insert(msgArray, msg)
                end
            end
            luaMsgs[label:lower()] = msgArray -- lower case keys
        end
    end
end

local function Translate(msg)
    msg = msg:lower()
    if luaMsgs and type(luaMsgs[msg]) == "table" then
        local msgs = luaMsgs[msg]
        return msgs[ math.random( #msgs ) ]
    end
    Spring.Log(sec, LOG.DEBUG, string.format("Missing translation for %s", msg))
    return msg
end

function widget:TeamDied(teamID)
    local playerNames
    local _, leaderPlayerId, isDead, isAiTeam = Spring.GetTeamInfo(teamID)
    if isAiTeam then
        local skirmishAIID, aiName, hostingPlayerID, shortName, version, options = Spring.GetAIInfo(teamID)
        if aiName~="UNKNOWN" and aiName:lower():sub(1,3)~="bot" and aiName:len()>1 then
            playerNames=aiName
        elseif shortName~="UNKNOWN" then
            playerNames=shortName
        elseif hostingPlayerID~=Spring.GetMyPlayerID() then
            local ownerName=Spring.GetPlayerInfo(hostingPlayerID)
            if ownerName then
                playerNames=ownerName.."'s bot"
            end
        end
    end
    for _,playerId in ipairs(Spring.GetPlayerList(teamID,true)) do
        playerNames=(playerNames and playerNames..", " or "")..Spring.GetPlayerInfo(playerId)
    end
    msg = string.format(Translate("Team%i(%s) is no more"), teamID, playerNames or "")
    Spring.Echo(msg)
end