function localchat(player, command, ...)
    local text = table.concat(arg, " ")
    local x, y, z = getElementPosition(player)
    for k, v in ipairs(getElementsByType("player")) do
        local x2, y2, z2 = getElementPosition(v)

        if(getDistanceBetweenPoints3D(x, y, z, x2, y2, z2) < 20.0) then
            outputChatBox(getPlayerName(player) .. " says: " .. text, v, 0, 255, 255)
        end
    end
end
addCommandHandler("l", localchat)