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#    This file is read by default from:
#    ../minetest.conf
#    ../../minetest.conf
#    Any other path can be chosen by passing the path as a parameter
#    to the program, eg. "minetest.exe --config ../minetest.conf.example".

#    By default, all the settings are commented and not functional.
#    Uncomment settings by removing the preceding #.

#    Further documentation:
#    http://wiki.minetest.net/

#    NOTE: This file might not be up-to-date, refer to the
#    defaultsettings.cpp file for an up-to-date list:
#    https://github.com/minetest/minetest/blob/master/src/defaultsettings.cpp

#    A vim command to convert most of defaultsettings.cpp to conf file format:
#    :'<,'>s/\tsettings->setDefault("\([^"]*\)", "\([^"]*\)");.*/#\1 = \2/g
#    Note: Some of the settings are implemented in Lua.

#
#    Client and server
#

#    Name of player, on a server this is the main admin
#name =

#
#    Client stuff
#

#    Port to connect to (UDP)
#remote_port =
#    Key mappings.
#    See http://irrlicht.sourceforge.net/docu/namespaceirr.html#a54da2a0e231901735e3da1b0edf72eb3
#keymap_forward = KEY_KEY_W
#keymap_backward = KEY_KEY_S
#keymap_left = KEY_KEY_A
#keymap_right = KEY_KEY_D
#keymap_jump = KEY_SPACE
#keymap_sneak = KEY_LSHIFT
#keymap_inventory = KEY_KEY_I
#    Go down ladder / go down in fly mode / go fast in fast mode
#keymap_special1 = KEY_KEY_E
#keymap_chat = KEY_KEY_T
#keymap_cmd = /
#keyman_console = KEY_F10
#keymap_rangeselect = KEY_KEY_R
#keymap_freemove = KEY_KEY_K
#keymap_fastmove = KEY_KEY_J
#keymap_cinematic = KEY_F8
#keymap_screenshot = KEY_F12
#    If true, keymap_special1 instead of keymap_sneak is used for climbing down and descending
#aux1_descends = false
#    Double-tapping the jump key toggles fly mode
#doubletap_jump = false
#    If false aux1 is used to fly fast
#always_fly_fast = true
#    Some (temporary) keys for debugging
#keymap_print_debug_stacks = KEY_KEY_P
#keymap_quicktune_prev = KEY_HOME
#keymap_quicktune_next = KEY_END
#keymap_quicktune_dec = KEY_NEXT
#keymap_quicktune_inc = KEY_PRIOR

#    If set to true, you can place blocks at the position (feet + eye level) where you stand.
#    This is helpful when working with nodeboxes.
#enable_build_where_you_stand = false
#    Minimum FPS.
#    The amount of rendered stuff is dynamically set according to this.
#wanted_fps = 30
#    If FPS would go higher than this, limit it by sleeping
#    to not waste CPU power for no benefit.
#fps_max = 60
#    Maximum FPS when game is paused
#pause_fps_max = 20
#    The allowed adjustment range for the automatic rendering range adjustment
#viewing_range_nodes_max = 160
#viewing_range_nodes_min = 35
#    Initial window size
#screenW = 800
#screenH = 600
#fullscreen = false
#fullscreen_bpp = 24
#    Experimental option, might cause visible spaces between blocks
#    when set to higher number than 0.
#fsaa = 0
#vsync = false
#    Field of view in degrees
#fov = 72
#    Address to connect to (#blank = start local server)
#address =
#    Enable random user input, for testing
#random_input = false
#    Timeout for client to remove unused map data from memory
#client_unload_unused_data_timeout = 600
#    Whether to fog out the end of the visible area
#enable_fog = true
#    Whether to show the client debug info (has the same effect as hitting F5)
#show_debug = false
#    Enable a bit lower water surface; disable for speed (not quite optimized)
#new_style_water = false
#    Max liquids processed per step
#liquid_loop_max = 100000
#    The time (in seconds) that the liquids queue may grow beyond processing
#    capacity until an attempt is made to decrease its size by dumping old queue
#    items.  A value of 0 disables the functionality.
#liquid_queue_purge_time = 0
#    Liquid update interval in seconds
#liquid_update = 1.0
#    Enable transparent leaf textures, disable for speed
#new_style_leaves = true
#    Connects glass if supported by node
#connected_glass = false
#    Enable smooth lighting with simple ambient occlusion.
#    Disable for speed or for different looks.
#smooth_lighting = true
#    Adjust the gamma encoding for the light tables. Valid values are in the range
#    1.1 to 3.0 (inclusive); lower numbers are brighter.  This setting is for the
#    client only and is ignored by the server
#display_gamma = 1.8
# Path to texture directory. All textures are first searched from here.
#texture_path =
#    Video back-end.
#    Possible values: null, software, burningsvideo, direct3d8, direct3d9, opengl.
#video_driver = opengl
#    Unobstructed movement without physics, downwards key is keymap_special1
#free_move = false
#    Continuous forward movement (for testing)
#continuous_forward = false
#    Enable cinematic mode
#cinematic = false
#    Camera smoothing - smooths rotation of camera. 0 is no smoothing.
#    Must be equal to or greater than 0, and less than 1.
#camera_smoothing = 0.0
#    Camera smoothing when in cinematic mode
#cinematic_camera_smoothing = 0.7
#    Fast movement (keymap_special1)
#fast_move = false
#    Invert mouse
#invert_mouse = false
#    Enable/disable clouds
#enable_clouds = true
#cloud_height = 120
#enable_3d_clouds = true
#    Use a cloud animation for the main menu background
#menu_clouds = true
#    Path for screenshots
#screenshot_path =
#    Amount of view bobbing (0 = no view bobbing, 1.0 = normal, 2.0 = double)
#view_bobbing_amount = 1.0
#    Amount of fall bobbing (0 = no fall bobbing, 1.0 = normal, 2.0 = double)
#fall_bobbing_amount = 0.0
#    3d support.
#    Currently:
#        "none"       = no 3d output.
#        "anaglyph"   = cyan/magenta color 3d.
#        "interlaced" = odd/even line based polarisation screen support.
#        "topbottom"  = split screen top/bottom.
#        "sidebyside" = split screen side by side.
#3d_mode = none
#3d_parallax_strength = 0.025
#    In-game chat console background color (R,G,B)
#console_color = (0,0,0)
#    In-game chat console background alpha (opaqueness, between 0 and 255)
#console_alpha = 200
#    Selection box border color (R,G,B)
#selectionbox_color = (0,0,0)
#    Crosshair color (R,G,B)
#crosshair_color = (255,255,255)
#    Cross alpha (opaqueness, between 0 and 255)
#crosshair_alpha = 255
#    Scale gui by a user specified value
#gui_scaling = 1.0
#    Use a nearest-neighbor-anti-alias filter to scale the GUI.
#    This will smooth over some of the rough edges, and blend
#    pixels when scaling down, at the cost of blurring some
#    edge pixels when images are scaled by non-integer sizes.
#gui_scaling_filter = false
#    When gui_scaling_filter is true, all GUI images need to be
#    filtered in software, but some images are generated directly
#    to hardware (e.g. render-to-texture for nodes in inventory).
#    When gui_scaling_filter_txr2img is true, copy those images
#    from hardware to software for scaling.  When false, fall back
#    to the old scaling method, for video drivers that don't
#    propery support downloading textures back from hardware.
#gui_scaling_filter_txr2img = true
#    Sensitivity multiplier
#mouse_sensitivity = 0.2
#    Sound settings
#enable_sound = true
#sound_volume = 0.7
#    Whether node texture animations should be desynchronized per mapblock
#desynchronize_mapblock_texture_animation = true
#    Width of the selectionbox's lines (Between 1 and 5)
#selectionbox_width = 2
#    Maximum proportion of current window to be used for hotbar.
#    Useful if there's something to be displayed right or left of hotbar.
#hud_hotbar_max_width = 1.0
#    Save the map received by the client on disk
#enable_local_map_saving = false
#    Enable selection highlighting for nodes (disables selectionbox)
#enable_node_highlighting = false
#    Texture filtering settings
#mip_map = false
#anisotropic_filter = false
#bilinear_filter = false
#trilinear_filter = false
#    Filtered textures can blend RGB values with fully-transparent neighbors,
#    which PNG optimizers usually discard, sometimes resulting in a dark or
#    light edge to transparent textures.  Apply this filter to clean that up
#    at texture load time.
#texture_clean_transparent = false
#    When using bilinear/trilinear/anisotropic filters, low-resolution textures
#    can be blurred, so automatically upscale them with nearest-neighbor
#    interpolation to preserve crisp pixels.  This sets the minimum texture size
#    for the upscaled textures; higher values look sharper, but require more
#    memory.  Powers of 2 are recommended.  Setting this higher than 1 may not
#    have a visible effect unless bilinear/trilinear/anisotropic filtering is
#    enabled.
#texture_min_size = 64
#    Set to true to pre-generate all item visuals
#preload_item_visuals = false
#    Set to true to enable shaders. Disable them if video_driver = direct3d9/8.
#enable_shaders = true
#    Set to true to enable textures bumpmapping. Requires shaders enabled.
#enable_bumpmapping = false
#    Set to true enables parallax occlusion mapping. Requires shaders enabled.
#generate_normalmaps = false
#    Set to true enables on the fly normalmap generation (Emboss effect).
#    Requires bumpmapping enabled.
#normalmaps_strength = 0.6
#    Strength of generated normalmaps
#normalmaps_smooth = 1
#    Defines sampling step of texture (0 - 2).
#    A higher value results in smoother normal maps.
#enable_parallax_occlusion = false
#    Scale of parallax occlusion effect
#parallax_occlusion_scale = 0.08
#    Bias of parallax occlusion effect, usually scale/2
#parallax_occlusion_bias = 0.04
#    Set to true enables waving water. Requires shaders enabled.
#enable_waving_water = false
#    Parameters for waving water:
#water_wave_height = 1.0
#water_wave_length = 20.0
#water_wave_speed = 5.0
#    Set to true enables waving leaves. Requires shaders enabled.
#enable_waving_leaves = false
#    Set to true enables waving plants. Requires shaders enabled.
#enable_waving_plants = false
#    Enables caching of facedir rotated meshes
#ambient_occlusion_gamma = 2.2
#    The strength (darkness) of node ambient-occlusion shading.
#    Lower is darker, Higher is lighter. The valid range of values for this
#    setting is 0.25 to 4.0 inclusive. If the value is out of range it will be
#    set to the nearest valid value.
#enable_mesh_cache = true
#    The time in seconds it takes between repeated
#    right clicks when holding the right mouse button.
#repeat_rightclick_time = 0.25
#    Make fog and sky colors depend on daytime (dawn/sunset) and view direction
#directional_colored_fog = true
#    Delay showing tooltips, stated in milliseconds
#tooltip_show_delay = 400
#    Adjust dpi configuration to your screen (non X11/Android only) e.g. for 4k screens
#screen_dpi = 72
#    Default timeout for cURL, stated in milliseconds.
#    Only has an effect if compiled with cURL.
#curl_timeout = 5000
#    Limits number of parallel HTTP requests. Affects:
#        Media fetch if server uses remote_media setting.
#        Serverlist download and server announcement.
#        Downloads performed by main menu (e.g. mod manager).
#    Only has an effect if compiled with cURL.
#curl_parallel_limit = 8
#    Maximum time in ms a file download (e.g. a mod download) may take
#curl_file_download_timeout = 300000
#    Enable usage of remote media server (if provided by server)
#enable_remote_media_server = true
#    Url to the server list displayed in the Multiplayer Tab
#serverlist_url = servers.minetest.net
#    File in client/serverlist/ that contains your favorite servers displayed in the Multiplayer Tab
#serverlist_file = favoriteservers.txt
#    Whether freetype fonts are used, requires freetype support to be compiled in
#freetype = true
#    Path to TrueTypeFont or bitmap
#font_path = fonts/liberationsans.ttf
#font_size = 15
#    Font shadow offset, if 0 then shadow will not be drawn
#font_shadow = 1
#    Font shadow alpha (opaqueness, between 0 and 255)
#font_shadow_alpha = 128
#mono_font_path = fonts/liberationmono.ttf
#mono_font_size = 15
#    This font will be used for certain languages
#fallback_font_path = fonts/DroidSansFallbackFull.ttf
#fallback_font_size = 15
#fallback_font_shadow = 1
#fallback_font_shadow_alpha = 128

#
#    Server stuff
#

#    Network port to listen (UDP)
#port = 30000
#    Bind address
#bind_address =
#    Name of server
#server_name = Minetest server
#    Description of server
#server_description = mine here
#    Domain name of server
#server_address = game.minetest.net
#    Homepage of server
#server_url = http://minetest.net
#    Automaticaly report to masterserver
#server_announce = 0
#    Announce to this masterserver.
#    If you want to announce your ipv6 address - use  serverlist_url = v6.servers.minetest.net.
#serverlist_url = servers.minetest.net
#    Default game (default when creating a new world)
#default_game = minetest
#    World directory (everything in the world is stored here)
#map-dir = /custom/world
#    Message of the Day
#motd = Welcome to this awesome Minetest server!
#    Maximum number of players connected simultaneously
#max_users = 15
#    Set to true to disallow old clients from connecting
#strict_protocol_version_checking = false
#    Time in seconds for item entity to live. Default value: 900s.
#    Setting it to -1 disables the feature.
#item_entity_ttl = 900
#    Set to true to enable creative mode (unlimited inventory)
#creative_mode = false
#    Enable players getting damage and dying
#enable_damage = false
#    A chosen map seed for a new map, leave empty for random
#fixed_map_seed =
#    Gives some stuff to players at the beginning
#give_initial_stuff = false
#    New users need to input this password
#default_password =
#    Available privileges: interact, shout, teleport, settime, privs, ...
#    See /privs in game for a full list on your server and mod configuration.
#default_privs = interact, shout
#    Whether players are shown to clients without any range limit.
#    Deprecated, use the setting player_transfer_distance instead.
#unlimited_player_transfer_distance = true
#    Defines the maximal player transfer distance in blocks (0 = unlimited)
#player_transfer_distance = 0
#    Whether to enable players killing each other
#enable_pvp = true
#    If this is set, players will always (re)spawn at the given position
#static_spawnpoint = 0, 10, 0
#    If true, new players cannot join with an empty password
#disallow_empty_password = false
#    If true, disable cheat prevention in multiplayer
#disable_anticheat = false
#    If true, actions are recorded for rollback
#    This option is only read when server starts
#enable_rollback_recording = false
#    Handling for deprecated lua api calls:
#        "legacy" = (try to) mimic old behaviour (default for release).
#        "log"    = mimic and log backtrace of deprecated call (default for debug).
#        "error"  = abort on usage of deprecated call (suggested for mod developers).
#deprecated_lua_api_handling = legacy
#    Mod profiler
#mod_profiling = false
#    Detailed mod profile data
#detailed_profiling = false
#    Profiler data print interval. #0 = disable.
#profiler_print_interval = 0
#enable_mapgen_debug_info = false
#    From how far client knows about objects
#active_object_send_range_blocks = 3
#    How large area of blocks are subject to the active block stuff.
#    Active = objects are loaded and ABMs run.
#active_block_range = 2
#    How many blocks are flying in the wire simultaneously per client
#max_simultaneous_block_sends_per_client = 10
#    How many blocks are flying in the wire simultaneously per server
#max_simultaneous_block_sends_server_total = 40
#    From how far blocks are sent to clients, stated in mapblocks (16 nodes)
#max_block_send_distance = 10
#    From how far blocks are generated for clients, stated in mapblocks (16 nodes)
#max_block_generate_distance = 6
#    Number of extra blocks that can be loaded by /clearobjects at once.
#    This is a trade-off between sqlite transaction overhead and
#    memory consumption (4096=100MB, as a rule of thumb).
#max_clearobjects_extra_loaded_blocks = 4096
#    Maximum number of forceloaded blocks
#max_forceloaded_blocks = 16
#    Interval of sending time of day to clients
#time_send_interval = 5
#    Controls length of day/night cycle.
#    72=20min, 360=4min, 1=24hour, 0=day/night/whatever stays unchanged.
#time_speed = 72
#server_unload_unused_data_timeout = 29
#    Maximum number of statically stored objects in a block
#max_objects_per_block = 49
#    Interval of saving important changes in the world, stated in seconds
#server_map_save_interval = 5.3
#    http://www.sqlite.org/pragma.html#pragma_synchronous only numeric values: 0 1 2
#sqlite_synchronous = 2
#    To reduce lag, block transfers are slowed down when a player is building something.
#    This determines how long they are slowed down after placing or removing a node.
#full_block_send_enable_min_time_from_building = 2.0
#    Length of a server tick and the interval at which objects are generally updated over network
#dedicated_server_step = 0.1
#    Can be set to true to disable shutting down on invalid world data
#ignore_world_load_errors = false
#    Specifies URL from which client fetches media instead of using UDP.
#    $filename should be accessible from $remote_media$filename via cURL
#    (obviously, remote_media should end with a slash).
#    Files that are not present would be fetched the usual way.
#remote_media =
#    Level of logging to be written to debug.txt:
#    0 = none, 1 = errors and debug, 2 = action, 3 = info, 4 = verbose.
#debug_log_level = 2
#    Maximum number of blocks that can be queued for loading
#emergequeue_limit_total = 256
#    Maximum number of blocks to be queued that are to be loaded from file.
#    Set to blank for an appropriate amount to be chosen automatically.
#emergequeue_limit_diskonly = 32
#    Maximum number of blocks to be queued that are to be generated.
#    Set to blank for an appropriate amount to be chosen automatically.
#emergequeue_limit_generate = 32
#    Number of emerge threads to use. Make this field blank, or increase this number
#    to use multiple threads. On multiprocessor systems, this will improve mapgen speed greatly
#    at the cost of slightly buggy caves.
#num_emerge_threads = 1
#    Maximum number of packets sent per send step, if you have a slow connection
#    try reducing it, but don't reduce it to a number below double of targeted
#    client number.
#max_packets_per_iteration = 1024

#    Enable/disable IPv6
#enable_ipv6 = true
#    Enable/disable running an IPv6 server.  An IPv6 server may be restricted
#    to IPv6 clients, depending on system configuration.
#    Ignored if bind_address is set.
#ipv6_server = false
#main_menu_script =
#main_menu_game_mgr = 0
#main_menu_mod_mgr = 1
#modstore_download_url = https://forum.minetest.net/media/
#modstore_listmods_url = https://forum.minetest.net/mmdb/mods/
#modstore_details_url  = https://forum.minetest.net/mmdb/mod/*/
#    Makes DirectX work with LuaJIT. Disable if it causes troubles.
#high_precision_fpu = true
#    Override language. When no value is provided (default) system language is used.
#    Check "locale" directory for the list of available translations.
#language =

#
#    Physics stuff
#

#movement_acceleration_default = 3
#movement_acceleration_air = 2
#movement_acceleration_fast = 10
#movement_speed_walk = 4
#movement_speed_crouch = 1.35
#movement_speed_fast = 20
#movement_speed_climb = 2
#movement_speed_jump = 6.5
#movement_speed_descend = 6
#movement_liquid_fluidity = 1
#movement_liquid_fluidity_smooth = 0.5
#movement_liquid_sink = 10
#movement_gravity = 9.81

#
#    Mapgen stuff
#

#    Name of map generator to be used.  Currently supported: v5, v6, v7, singlenode.
#mg_name = v6
#    Water surface level of map
#water_level = 1
#    Size of chunks to be generated, stated in mapblocks (16 nodes)
#chunksize = 5
#    Global map generation attributes.  Currently supported: trees, caves, flat, dungeons, light.
#    Flags that are not specified in the flag string are not modified from the default.
#    To explicitly turn off a flag, prepend "no" to the beginning, e.g. nolight.
#mg_flags = trees, caves, dungeons, light
#    Enable/disable floating dungeons and dungeon slices
#enable_floating_dungeons = true

#    Map generation attributes specific to Mapgen V6.
#    Currently supported: jungles, biomeblend, mudflow, snowbiomes.
#    When snowbiomes are enabled jungles are enabled and the jungles flag is ignored.
#mgv6_spflags = jungles, biomeblend, mudflow
#    Controls size of deserts and beaches in Mapgen V6
#    When snowbiomes are enabled 'mgv6_freq_desert' is ignored.
#mgv6_freq_desert = 0.45
#mgv6_freq_beach = 0.15

#    Map generation attributes specific to Mapgen V7.
#    Currently supported: mountains, ridges.
#mgv7_spflags = mountains, ridges

#    Perlin noise attributes for different map generation parameters.
#    Noise parameters can be specified as a set of positional values:
#    Offset, scale, (spread factors), seed offset, number of octaves, persistence, lacunarity.
#mgv6_np_terrain_base = -4, 20, (250, 250, 250), 82341, 5, 0.6, 2.0
#    Or the new group format can be used instead, for example:
#mgv6_np_terrain_base = {
#    offset      = -4
#    scale       = 20
#    spread      = (250, 250, 250)
#    seed        = 82341
#    octaves     = 5
#    persistence = 0.6
#    lacunarity  = 2.0
#    flags       = "defaults"
#}
#    Only the group format supports noise flags which are needed for eased noise.
#    Mgv5 uses eased noise for np_ground so this is shown in group format,
#    other noise parameters are shown in positional format to save space.

#    Noise parameters for biome API temperature and humidity
#mg_biome_np_heat = 50, 50, (500, 500, 500), 5349, 3, 0.5, 2.0
#mg_biome_np_humidity = 50, 50, (500, 500, 500), 842, 3, 0.5, 2.0

#mgv5_np_filler_depth = 0, 1, (150, 150, 150), 261, 4, 0.7, 2.0
#mgv5_np_factor = 0, 1, (250, 250, 250), 920381, 3, 0.45, 2.0
#mgv5_np_height = 0, 10, (250, 250, 250), 84174, 4, 0.5, 2.0
#mgv5_np_cave1 = 0, 12, (50, 50, 50), 52534, 4, 0.5, 2.0
#mgv5_np_cave2 = 0, 12, (50, 50, 50), 10325, 4, 0.5, 2.0
#mgv5_np_ground = {
#    offset      = 0
#    scale       = 40
#    spread      = (80, 80, 80)
#    seed        = 983240
#    octaves     = 4
#    persistence = 0.55
#    lacunarity  = 2.0
#    flags       = "eased"
#}

#mgv6_np_terrain_base = -4, 20, (250, 250, 250), 82341, 5, 0.6, 2.0
#mgv6_np_terrain_higher = 20, 16, (500, 500, 500), 85039, 5, 0.6, 2.0
#mgv6_np_steepness = 0.85, 0.5, (125, 125, 125), -932, 5, 0.7, 2.0
#mgv6_np_height_select = 0.5, 1, (250, 250, 250), 4213, 5, 0.69, 2.0
#mgv6_np_mud = 4, 2, (200, 200, 200), 91013, 3, 0.55, 2.0
#mgv6_np_beach = 0, 1, (250, 250, 250), 59420, 3, 0.50, 2.0
#mgv6_np_biome = 0, 1, (250, 250, 250), 9130, 3, 0.50, 2.0
#mgv6_np_cave = 6, 6, (250, 250, 250), 34329, 3, 0.50, 2.0
#mgv6_np_humidity = 0.5, 0.5, (500, 500, 500), 72384, 4, 0.66, 2.0
#mgv6_np_trees = 0, 1, (125, 125, 125), 2, 4, 0.66, 2.0
#mgv6_np_apple_trees = 0, 1, (100, 100, 100), 342902, 3, 0.45, 2.0

#mgv7_np_terrain_base = 4, 70, (300, 300, 300), 82341, 6, 0.7, 2.0
#mgv7_np_terrain_alt = 4, 25, (600, 600, 600), 5934, 5, 0.6, 2.0
#mgv7_np_terrain_persist = 0.6, 0.1, (500, 500, 500), 539, 3, 0.6, 2.0
#mgv7_np_height_select = -0.5, 1, (250, 250, 250), 4213, 5, 0.69, 2.0
#mgv7_np_filler_depth = 0, 1.2, (150, 150, 150), 261, 4, 0.7, 2.0
#mgv7_np_mount_height = 100, 30, (500, 500, 500), 72449, 4, 0.6, 2.0
#mgv7_np_ridge_uwater = 0, 1, (500, 500, 500), 85039, 4, 0.6, 2.0
#mgv7_np_mountain = -0.6, 1, (250, 350, 250), 5333, 5, 0.68, 2.0
#mgv7_np_ridge = 0, 1, (100, 100, 100), 6467, 4, 0.75, 2.0
#mgv7_np_cave1 = 0, 12, (100, 100, 100), 52534, 4, 0.5, 2.0
#mgv7_np_cave2 = 0, 12, (100, 100, 100), 10325, 4, 0.5, 2.0

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/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "client.h"
#include "utility.h"
#include <iostream>
#include "clientserver.h"
#include "jmutexautolock.h"
#include "main.h"
#include <sstream>
#include "porting.h"
#include "mapsector.h"
#include "mapblock_mesh.h"
#include "mapblock.h"
#include "settings.h"
#include "profiler.h"
#include "log.h"
#include "nodemetadata.h"
#include "nodedef.h"
#include "itemdef.h"
#include <IFileSystem.h>
#include "sha1.h"
#include "base64.h"

static std::string getTextureCacheDir()
{
	return porting::path_user + DIR_DELIM + "cache" + DIR_DELIM + "textures";
}

struct TextureRequest
{
	std::string name;

	TextureRequest(const std::string &name_=""):
		name(name_)
	{}
};

/*
	QueuedMeshUpdate
*/

QueuedMeshUpdate::QueuedMeshUpdate():
	p(-1337,-1337,-1337),
	data(NULL),
	ack_block_to_server(false)
{
}

QueuedMeshUpdate::~QueuedMeshUpdate()
{
	if(data)
		delete data;
}

/*
	MeshUpdateQueue
*/
	
MeshUpdateQueue::MeshUpdateQueue()
{
	m_mutex.Init();
}

MeshUpdateQueue::~MeshUpdateQueue()
{
	JMutexAutoLock lock(m_mutex);

	core::list<QueuedMeshUpdate*>::Iterator i;
	for(i=m_queue.begin(); i!=m_queue.end(); i++)
	{
		QueuedMeshUpdate *q = *i;
		delete q;
	}
}

/*
	peer_id=0 adds with nobody to send to
*/
void MeshUpdateQueue::addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server)
{
	DSTACK(__FUNCTION_NAME);

	assert(data);

	JMutexAutoLock lock(m_mutex);

	/*
		Find if block is already in queue.
		If it is, update the data and quit.
	*/
	core::list<QueuedMeshUpdate*>::Iterator i;
	for(i=m_queue.begin(); i!=m_queue.end(); i++)
	{
		QueuedMeshUpdate *q = *i;
		if(q->p == p)
		{
			if(q->data)
				delete q->data;
			q->data = data;
			if(ack_block_to_server)
				q->ack_block_to_server = true;
			return;
		}
	}
	
	/*
		Add the block
	*/
	QueuedMeshUpdate *q = new QueuedMeshUpdate;
	q->p = p;
	q->data = data;
	q->ack_block_to_server = ack_block_to_server;
	m_queue.push_back(q);
}

// Returned pointer must be deleted
// Returns NULL if queue is empty
QueuedMeshUpdate * MeshUpdateQueue::pop()
{
	JMutexAutoLock lock(m_mutex);

	core::list<QueuedMeshUpdate*>::Iterator i = m_queue.begin();
	if(i == m_queue.end())
		return NULL;
	QueuedMeshUpdate *q = *i;
	m_queue.erase(i);
	return q;
}

/*
	MeshUpdateThread
*/

void * MeshUpdateThread::Thread()
{
	ThreadStarted();

	log_register_thread("MeshUpdateThread");

	DSTACK(__FUNCTION_NAME);
	
	BEGIN_DEBUG_EXCEPTION_HANDLER

	while(getRun())
	{
		/*// Wait for output queue to flush.
		// Allow 2 in queue, this makes less frametime jitter.
		// Umm actually, there is no much difference
		if(m_queue_out.size() >= 2)
		{
			sleep_ms(3);
			continue;
		}*/

		QueuedMeshUpdate *q = m_queue_in.pop();
		if(q == NULL)
		{
			sleep_ms(3);
			continue;
		}

		ScopeProfiler sp(g_profiler, "Client: Mesh making");

		scene::SMesh *mesh_new = NULL;
		mesh_new = makeMapBlockMesh(q->data, m_gamedef);

		MeshUpdateResult r;
		r.p = q->p;
		r.mesh = mesh_new;
		r.ack_block_to_server = q->ack_block_to_server;

		/*infostream<<"MeshUpdateThread: Processed "
				<<"("<<q->p.X<<","<<q->p.Y<<","<<q->p.Z<<")"
				<<std::endl;*/

		m_queue_out.push_back(r);

		delete q;
	}

	END_DEBUG_EXCEPTION_HANDLER(errorstream)

	return NULL;
}

Client::Client(
		IrrlichtDevice *device,
		const char *playername,
		std::string password,
		MapDrawControl &control,
		IWritableTextureSource *tsrc,
		IWritableItemDefManager *itemdef,
		IWritableNodeDefManager *nodedef
):
	m_tsrc(tsrc),
	m_itemdef(itemdef),
	m_nodedef(nodedef),
	m_mesh_update_thread(this),
	m_env(
		new ClientMap(this, this, control,
			device->getSceneManager()->getRootSceneNode(),
			device->getSceneManager(), 666),
		device->getSceneManager(),
		tsrc, this, device
	),
	m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
	m_device(device),
	m_server_ser_ver(SER_FMT_VER_INVALID),
	m_playeritem(0),
	m_inventory_updated(false),
	m_inventory_from_server(NULL),
	m_inventory_from_server_age(0.0),
	m_time_of_day(0),
	m_map_seed(0),
	m_password(password),
	m_access_denied(false),
	m_texture_receive_progress(0),
	m_textures_received(false),
	m_itemdef_received(false),
	m_nodedef_received(false)
{
	m_packetcounter_timer = 0.0;
	//m_delete_unused_sectors_timer = 0.0;
	m_connection_reinit_timer = 0.0;
	m_avg_rtt_timer = 0.0;
	m_playerpos_send_timer = 0.0;
	m_ignore_damage_timer = 0.0;

	// Build main texture atlas, now that the GameDef exists (that is, us)
	if(g_settings->getBool("enable_texture_atlas"))
		m_tsrc->buildMainAtlas(this);
	else
		infostream<<"Not building texture atlas."<<std::endl;
	
	/*
		Add local player
	*/
	{
		Player *player = new LocalPlayer(this);

		player->updateName(playername);

		m_env.addPlayer(player);
	}
}

Client::~Client()
{
	{
		//JMutexAutoLock conlock(m_con_mutex); //bulk comment-out
		m_con.Disconnect();
	}

	m_mesh_update_thread.setRun(false);
	while(m_mesh_update_thread.IsRunning())
		sleep_ms(100);

	delete m_inventory_from_server;
}

void Client::connect(Address address)
{
	DSTACK(__FUNCTION_NAME);
	//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
	m_con.SetTimeoutMs(0);
	m_con.Connect(address);
}

bool Client::connectedAndInitialized()
{
	//JMutexAutoLock lock(m_con_mutex); //bulk comment-out

	if(m_con.Connected() == false)
		return false;
	
	if(m_server_ser_ver == SER_FMT_VER_INVALID)
		return false;
	
	return true;
}

void Client::step(float dtime)
{
	DSTACK(__FUNCTION_NAME);
	
	// Limit a bit
	if(dtime > 2.0)
		dtime = 2.0;
	
	if(m_ignore_damage_timer > dtime)
		m_ignore_damage_timer -= dtime;
	else
		m_ignore_damage_timer = 0.0;
	
	//infostream<<"Client steps "<<dtime<<std::endl;

	{
		//TimeTaker timer("ReceiveAll()", m_device);
		// 0ms
		ReceiveAll();
	}
	
	{
		//TimeTaker timer("m_con_mutex + m_con.RunTimeouts()", m_device);
		// 0ms
		//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
		m_con.RunTimeouts(dtime);
	}

	/*
		Packet counter
	*/
	{
		float &counter = m_packetcounter_timer;
		counter -= dtime;
		if(counter <= 0.0)
		{
			counter = 20.0;
			
			infostream<<"Client packetcounter (20s):"<<std::endl;
			m_packetcounter.print(infostream);
			m_packetcounter.clear();
		}
	}
	
	// Get connection status
	bool connected = connectedAndInitialized();

#if 0
	{
		/*
			Delete unused sectors

			NOTE: This jams the game for a while because deleting sectors
			      clear caches
		*/
		
		float &counter = m_delete_unused_sectors_timer;
		counter -= dtime;
		if(counter <= 0.0)
		{
			// 3 minute interval
			//counter = 180.0;
			counter = 60.0;

			//JMutexAutoLock lock(m_env_mutex); //bulk comment-out

			core::list<v3s16> deleted_blocks;

			float delete_unused_sectors_timeout = 
				g_settings->getFloat("client_delete_unused_sectors_timeout");
	
			// Delete sector blocks
			/*u32 num = m_env.getMap().unloadUnusedData
					(delete_unused_sectors_timeout,
					true, &deleted_blocks);*/
			
			// Delete whole sectors
			m_env.getMap().unloadUnusedData
					(delete_unused_sectors_timeout,
					&deleted_blocks);

			if(deleted_blocks.size() > 0)
			{
				/*infostream<<"Client: Deleted blocks of "<<num
						<<" unused sectors"<<std::endl;*/
				/*infostream<<"Client: Deleted "<<num
						<<" unused sectors"<<std::endl;*/
				
				/*
					Send info to server
				*/

				// Env is locked so con can be locked.
				//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
				
				core::list<v3s16>::Iterator i = deleted_blocks.begin();
				core::list<v3s16> sendlist;
				for(;;)
				{
					if(sendlist.size() == 255 || i == deleted_blocks.end())
					{
						if(sendlist.size() == 0)
							break;
						/*
							[0] u16 command
							[2] u8 count
							[3] v3s16 pos_0
							[3+6] v3s16 pos_1
							...
						*/
						u32 replysize = 2+1+6*sendlist.size();
						SharedBuffer<u8> reply(replysize);
						writeU16(&reply[0], TOSERVER_DELETEDBLOCKS);
						reply[2] = sendlist.size();
						u32 k = 0;
						for(core::list<v3s16>::Iterator
								j = sendlist.begin();
								j != sendlist.end(); j++)
						{
							writeV3S16(&reply[2+1+6*k], *j);
							k++;
						}
						m_con.Send(PEER_ID_SERVER, 1, reply, true);

						if(i == deleted_blocks.end())
							break;

						sendlist.clear();
					}

					sendlist.push_back(*i);
					i++;
				}
			}
		}
	}
#endif

	if(connected == false)
	{
		float &counter = m_connection_reinit_timer;
		counter -= dtime;
		if(counter <= 0.0)
		{
			counter = 2.0;

			//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
			
			Player *myplayer = m_env.getLocalPlayer();
			assert(myplayer != NULL);
	
			// Send TOSERVER_INIT
			// [0] u16 TOSERVER_INIT
			// [2] u8 SER_FMT_VER_HIGHEST
			// [3] u8[20] player_name
			// [23] u8[28] password (new in some version)
			// [51] u16 client network protocol version (new in some version)
			SharedBuffer<u8> data(2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2);
			writeU16(&data[0], TOSERVER_INIT);
			writeU8(&data[2], SER_FMT_VER_HIGHEST);

			memset((char*)&data[3], 0, PLAYERNAME_SIZE);
			snprintf((char*)&data[3], PLAYERNAME_SIZE, "%s", myplayer->getName());

			/*infostream<<"Client: sending initial password hash: \""<<m_password<<"\""
					<<std::endl;*/

			memset((char*)&data[23], 0, PASSWORD_SIZE);
			snprintf((char*)&data[23], PASSWORD_SIZE, "%s", m_password.c_str());
			
			// This should be incremented in each version
			writeU16(&data[51], PROTOCOL_VERSION);

			// Send as unreliable
			Send(0, data, false);
		}

		// Not connected, return
		return;
	}

	/*
		Do stuff if connected
	*/
	
	/*
		Run Map's timers and unload unused data
	*/
	const float map_timer_and_unload_dtime = 5.25;
	if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
	{
		ScopeProfiler sp(g_profiler, "Client: map timer and unload");
		core::list<v3s16> deleted_blocks;
		m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
				g_settings->getFloat("client_unload_unused_data_timeout"),
				&deleted_blocks);
				
		/*if(deleted_blocks.size() > 0)
			infostream<<"Client: Unloaded "<<deleted_blocks.size()
					<<" unused blocks"<<std::endl;*/
			
		/*
			Send info to server
			NOTE: This loop is intentionally iterated the way it is.
		*/

		core::list<v3s16>::Iterator i = deleted_blocks.begin();
		core::list<v3s16> sendlist;
		for(;;)
		{
			if(sendlist.size() == 255 || i == deleted_blocks.end())
			{
				if(sendlist.size() == 0)
					break;
				/*
					[0] u16 command
					[2] u8 count
					[3] v3s16 pos_0
					[3+6] v3s16 pos_1
					...
				*/
				u32 replysize = 2+1+6*sendlist.size();
				SharedBuffer<u8> reply(replysize);
				writeU16(&reply[0], TOSERVER_DELETEDBLOCKS);
				reply[2] = sendlist.size();
				u32 k = 0;
				for(core::list<v3s16>::Iterator
						j = sendlist.begin();
						j != sendlist.end(); j++)
				{
					writeV3S16(&reply[2+1+6*k], *j);
					k++;
				}
				m_con.Send(PEER_ID_SERVER, 1, reply, true);

				if(i == deleted_blocks.end())
					break;

				sendlist.clear();
			}

			sendlist.push_back(*i);
			i++;
		}
	}

	/*
		Handle environment
	*/
	{
		// 0ms
		//JMutexAutoLock lock(m_env_mutex); //bulk comment-out

		// Control local player (0ms)
		LocalPlayer *player = m_env.getLocalPlayer();
		assert(player != NULL);
		player->applyControl(dtime);

		//TimeTaker envtimer("env step", m_device);
		// Step environment
		m_env.step(dtime);
		
		/*
			Get events
		*/
		for(;;)
		{
			ClientEnvEvent event = m_env.getClientEvent();
			if(event.type == CEE_NONE)
			{
				break;
			}
			else if(event.type == CEE_PLAYER_DAMAGE)
			{
				if(m_ignore_damage_timer <= 0)
				{
					u8 damage = event.player_damage.amount;
					
					if(event.player_damage.send_to_server)
						sendDamage(damage);

					// Add to ClientEvent queue
					ClientEvent event;
					event.type = CE_PLAYER_DAMAGE;
					event.player_damage.amount = damage;
					m_client_event_queue.push_back(event);
				}
			}
		}
	}
	
	/*
		Print some info
	*/
	{
		float &counter = m_avg_rtt_timer;
		counter += dtime;
		if(counter >= 10)
		{
			counter = 0.0;
			//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
			// connectedAndInitialized() is true, peer exists.
			float avg_rtt = m_con.GetPeerAvgRTT(PEER_ID_SERVER);
			infostream<<"Client: avg_rtt="<<avg_rtt<<std::endl;
		}
	}

	/*
		Send player position to server
	*/
	{
		float &counter = m_playerpos_send_timer;
		counter += dtime;
		if(counter >= 0.2)
		{
			counter = 0.0;
			sendPlayerPos();
		}
	}

	/*
		Replace updated meshes
	*/
	{
		//JMutexAutoLock lock(m_env_mutex); //bulk comment-out

		//TimeTaker timer("** Processing mesh update result queue");
		// 0ms
		
		/*infostream<<"Mesh update result queue size is "
				<<m_mesh_update_thread.m_queue_out.size()
				<<std::endl;*/

		while(m_mesh_update_thread.m_queue_out.size() > 0)
		{
			MeshUpdateResult r = m_mesh_update_thread.m_queue_out.pop_front();
			MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(r.p);
			if(block)
			{
				block->replaceMesh(r.mesh);
			}
			if(r.ack_block_to_server)
			{
				/*infostream<<"Client: ACK block ("<<r.p.X<<","<<r.p.Y
						<<","<<r.p.Z<<")"<<std::endl;*/
				/*
					Acknowledge block
				*/
				/*
					[0] u16 command
					[2] u8 count
					[3] v3s16 pos_0
					[3+6] v3s16 pos_1
					...
				*/
				u32 replysize = 2+1+6;
				SharedBuffer<u8> reply(replysize);
				writeU16(&reply[0], TOSERVER_GOTBLOCKS);
				reply[2] = 1;
				writeV3S16(&reply[3], r.p);
				// Send as reliable
				m_con.Send(PEER_ID_SERVER, 1, reply, true);
			}
		}
	}

	/*
		If the server didn't update the inventory in a while, revert
		the local inventory (so the player notices the lag problem
		and knows something is wrong).
	*/
	if(m_inventory_from_server)
	{
		float interval = 10.0;
		float count_before = floor(m_inventory_from_server_age / interval);

		m_inventory_from_server_age += dtime;

		float count_after = floor(m_inventory_from_server_age / interval);

		if(count_after != count_before)
		{
			// Do this every <interval> seconds after TOCLIENT_INVENTORY
			// Reset the locally changed inventory to the authoritative inventory
			Player *player = m_env.getLocalPlayer();
			player->inventory = *m_inventory_from_server;
			m_inventory_updated = true;
		}
	}
}

// Virtual methods from con::PeerHandler
void Client::peerAdded(con::Peer *peer)
{
	infostream<<"Client::peerAdded(): peer->id="
			<<peer->id<<std::endl;
}
void Client::deletingPeer(con::Peer *peer, bool timeout)
{
	infostream<<"Client::deletingPeer(): "
			"Server Peer is getting deleted "
			<<"(timeout="<<timeout<<")"<<std::endl;
}

void Client::ReceiveAll()
{
	DSTACK(__FUNCTION_NAME);
	u32 start_ms = porting::getTimeMs();
	for(;;)
	{
		// Limit time even if there would be huge amounts of data to
		// process
		if(porting::getTimeMs() > start_ms + 100)
			break;
		
		try{
			Receive();
		}
		catch(con::NoIncomingDataException &e)
		{
			break;
		}
		catch(con::InvalidIncomingDataException &e)
		{
			infostream<<"Client::ReceiveAll(): "
					"InvalidIncomingDataException: what()="
					<<e.what()<<std::endl;
		}
	}
}

void Client::Receive()
{
	DSTACK(__FUNCTION_NAME);
	SharedBuffer<u8> data;
	u16 sender_peer_id;
	u32 datasize;
	{
		//TimeTaker t1("con mutex and receive", m_device);
		//JMutexAutoLock lock(m_con_mutex); //bulk comment-out
		datasize = m_con.Receive(sender_peer_id, data);
	}
	//TimeTaker t1("ProcessData", m_device);
	ProcessData(*data, datasize, sender_peer_id);
}

/*
	sender_peer_id given to this shall be quaranteed to be a valid peer
*/
void Client::ProcessData(u8 *data, u32 datasize, u16 sender_peer_id)
{
	DSTACK(__FUNCTION_NAME);

	// Ignore packets that don't even fit a command
	if(datasize < 2)
	{
		m_packetcounter.add(60000);
		return;
	}

	ToClientCommand command = (ToClientCommand)readU16(&data[0]);

	//infostream<<"Client: received command="<<command<<std::endl;
	m_packetcounter.add((u16)command);
	
	/*
		If this check is removed, be sure to change the queue
		system to know the ids
	*/
	if(sender_peer_id != PEER_ID_SERVER)
	{
		infostream<<"Client::ProcessData(): Discarding data not "
				"coming from server: peer_id="<<sender_peer_id
				<<std::endl;
		return;
	}

	u8 ser_version = m_server_ser_ver;

	//infostream<<"Client received command="<<(int)command<<std::endl;

	if(command == TOCLIENT_INIT)
	{
		if(datasize < 3)
			return;

		u8 deployed = data[2];

		infostream<<"Client: TOCLIENT_INIT received with "
				"deployed="<<((int)deployed&0xff)<<std::endl;

		if(deployed < SER_FMT_VER_LOWEST
				|| deployed > SER_FMT_VER_HIGHEST)
		{
			infostream<<"Client: TOCLIENT_INIT: Server sent "
					<<"unsupported ser_fmt_ver"<<std::endl;
			return;
		}
		
		m_server_ser_ver = deployed;

		// Get player position
		v3s16 playerpos_s16(0, BS*2+BS*20, 0);
		if(datasize >= 2+1+6)
			playerpos_s16 = readV3S16(&data[2+1]);
		v3f playerpos_f = intToFloat(playerpos_s16, BS) - v3f(0, BS/2, 0);

		{ //envlock
			//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
			
			// Set player position
			Player *player = m_env.getLocalPlayer();
			assert(player != NULL);
			player->setPosition(playerpos_f);
		}
		
		if(datasize >= 2+1+6+8)
		{
			// Get map seed
			m_map_seed = readU64(&data[2+1+6]);
			infostream<<"Client: received map seed: "<<m_map_seed<<std::endl;
		}
		
		// Reply to server
		u32 replysize = 2;
		SharedBuffer<u8> reply(replysize);
		writeU16(&reply[0], TOSERVER_INIT2);
		// Send as reliable
		m_con.Send(PEER_ID_SERVER, 1, reply, true);

		return;
	}

	if(command == TOCLIENT_ACCESS_DENIED)
	{
		// The server didn't like our password. Note, this needs
		// to be processed even if the serialisation format has
		// not been agreed yet, the same as TOCLIENT_INIT.
		m_access_denied = true;
		m_access_denied_reason = L"Unknown";
		if(datasize >= 4)
		{
			std::string datastring((char*)&data[2], datasize-2);
			std::istringstream is(datastring, std::ios_base::binary);
			m_access_denied_reason = deSerializeWideString(is);
		}
		return;
	}

	if(ser_version == SER_FMT_VER_INVALID)
	{
		infostream<<"Client: Server serialization"
				" format invalid or not initialized."
				" Skipping incoming command="<<command<<std::endl;
		return;
	}
	
	// Just here to avoid putting the two if's together when
	// making some copypasta
	{}

	if(command == TOCLIENT_REMOVENODE)
	{
		if(datasize < 8)
			return;
		v3s16 p;
		p.X = readS16(&data[2]);
		p.Y = readS16(&data[4]);
		p.Z = readS16(&data[6]);
		
		//TimeTaker t1("TOCLIENT_REMOVENODE");
		
		// This will clear the cracking animation after digging
		((ClientMap&)m_env.getMap()).clearTempMod(p);

		removeNode(p);
	}
	else if(command == TOCLIENT_ADDNODE)
	{
		if(datasize < 8 + MapNode::serializedLength(ser_version))
			return;

		v3s16 p;
		p.X = readS16(&data[2]);
		p.Y = readS16(&data[4]);
		p.Z = readS16(&data[6]);
		
		//TimeTaker t1("TOCLIENT_ADDNODE");

		MapNode n;
		n.deSerialize(&data[8], ser_version);
		
		addNode(p, n);
	}
	else if(command == TOCLIENT_BLOCKDATA)
	{
		// Ignore too small packet
		if(datasize < 8)
			return;
			
		v3s16 p;
		p.X = readS16(&data[2]);
		p.Y = readS16(&data[4]);
		p.Z = readS16(&data[6]);
		
		/*infostream<<"Client: Thread: BLOCKDATA for ("
				<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
		/*infostream<<"Client: Thread: BLOCKDATA for ("
				<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
		
		std::string datastring((char*)&data[8], datasize-8);
		std::istringstream istr(datastring, std::ios_base::binary);
		
		MapSector *sector;
		MapBlock *block;
		
		v2s16 p2d(p.X, p.Z);
		sector = m_env.getMap().emergeSector(p2d);
		
		assert(sector->getPos() == p2d);

		//TimeTaker timer("MapBlock deSerialize");
		// 0ms
		
		block = sector->getBlockNoCreateNoEx(p.Y);
		if(block)
		{
			/*
				Update an existing block
			*/
			//infostream<<"Updating"<<std::endl;
			block->deSerialize(istr, ser_version, false);
		}
		else
		{
			/*
				Create a new block
			*/
			//infostream<<"Creating new"<<std::endl;
			block = new MapBlock(&m_env.getMap(), p, this);
			block->deSerialize(istr, ser_version, false);
			sector->insertBlock(block);
		}

#if 0
		/*
			Acknowledge block
		*/
		/*
			[0] u16 command
			[2] u8 count
			[3] v3s16 pos_0
			[3+6] v3s16 pos_1
			...
		*/
		u32 replysize = 2+1+6;
		SharedBuffer<u8> reply(replysize);
		writeU16(&reply[0], TOSERVER_GOTBLOCKS);
		reply[2] = 1;
		writeV3S16(&reply[3], p);
		// Send as reliable
		m_con.Send(PEER_ID_SERVER, 1, reply, true);
#endif

		/*
			Update Mesh of this block and blocks at x-, y- and z-.
			Environment should not be locked as it interlocks with the
			main thread, from which is will want to retrieve textures.
		*/

		//m_env.getClientMap().updateMeshes(block->getPos(), getDayNightRatio());
		/*
			Add it to mesh update queue and set it to be acknowledged after update.
		*/
		//infostream<<"Adding mesh update task for received block"<<std::endl;
		addUpdateMeshTaskWithEdge(p, true);
	}
	else if(command == TOCLIENT_INVENTORY)
	{
		if(datasize < 3)
			return;

		//TimeTaker t1("Parsing TOCLIENT_INVENTORY", m_device);

		{ //envlock
			//TimeTaker t2("mutex locking", m_device);
			//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
			//t2.stop();
			
			//TimeTaker t3("istringstream init", m_device);
			std::string datastring((char*)&data[2], datasize-2);
			std::istringstream is(datastring, std::ios_base::binary);
			//t3.stop();
			
			//m_env.printPlayers(infostream);

			//TimeTaker t4("player get", m_device);
			Player *player = m_env.getLocalPlayer();
			assert(player != NULL);
			//t4.stop();

			//TimeTaker t1("inventory.deSerialize()", m_device);
			player->inventory.deSerialize(is);
			//t1.stop();

			m_inventory_updated = true;

			delete m_inventory_from_server;
			m_inventory_from_server = new Inventory(player->inventory);
			m_inventory_from_server_age = 0.0;

			//infostream<<"Client got player inventory:"<<std::endl;
			//player->inventory.print(infostream);
		}
	}
	else if(command == TOCLIENT_TIME_OF_DAY)
	{
		if(datasize < 4)
			return;
		
		u16 time_of_day = readU16(&data[2]);
		time_of_day = time_of_day % 24000;
		//infostream<<"Client: time_of_day="<<time_of_day<<std::endl;
		
		/*
			time_of_day:
			0 = midnight
			12000 = midday
		*/
		{
			m_env.setTimeOfDay(time_of_day);

			u32 dr = m_env.getDayNightRatio();

			infostream<<"Client: time_of_day="<<time_of_day
					<<", dr="<<dr
					<<std::endl;
		}

	}
	else if(command == TOCLIENT_CHAT_MESSAGE)
	{
		/*
			u16 command
			u16 length
			wstring message
		*/
		u8 buf[6];
		std::string datastring((char*)&data[2], datasize-2);
		std::istringstream is(datastring, std::ios_base::binary);
		
		// Read stuff
		is.read((char*)buf, 2);
		u16 len = readU16(buf);
		
		std::wstring message;
		for(u16 i=0; i<len; i++)
		{
			is.read((char*)buf, 2);
			message += (wchar_t)readU16(buf);
		}

		/*infostream<<"Client received chat message: "
				<<wide_to_narrow(message)<<std::endl;*/
		
		m_chat_queue.push_back(message);
	}
	else if(command == TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD)
	{
		//if(g_settings->getBool("enable_experimental"))
		{
			/*
				u16 command
				u16 count of removed objects
				for all removed objects {
					u16 id
				}
				u16 count of added objects
				for all added objects {
					u16 id
					u8 type
					u32 initialization data length
					string initialization data
				}
			*/

			char buf[6];
			// Get all data except the command number
			std::string datastring((char*)&data[2], datasize-2);
			// Throw them in an istringstream
			std::istringstream is(datastring, std::ios_base::binary);

			// Read stuff
			
			// Read removed objects
			is.read(buf, 2);
			u16 removed_count = readU16((u8*)buf);
			for(u16 i=0; i<removed_count; i++)
			{
				is.read(buf, 2);
				u16 id = readU16((u8*)buf);
				// Remove it
				{
					//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
					m_env.removeActiveObject(id);
				}
			}
			
			// Read added objects
			is.read(buf, 2);
			u16 added_count = readU16((u8*)buf);
			for(u16 i=0; i<added_count; i++)
			{
				is.read(buf, 2);
				u16 id = readU16((u8*)buf);
				is.read(buf, 1);
				u8 type = readU8((u8*)buf);
				std::string data = deSerializeLongString(is);
				// Add it
				{
					//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
					m_env.addActiveObject(id, type, data);
				}
			}
		}
	}
	else if(command == TOCLIENT_ACTIVE_OBJECT_MESSAGES)
	{
		//if(g_settings->getBool("enable_experimental"))
		{
			/*
				u16 command
				for all objects
				{
					u16 id
					u16 message length
					string message
				}
			*/
			char buf[6];
			// Get all data except the command number
			std::string datastring((char*)&data[2], datasize-2);
			// Throw them in an istringstream
			std::istringstream is(datastring, std::ios_base::binary);
			
			while(is.eof() == false)
			{
				// Read stuff
				is.read(buf, 2);
				u16 id = readU16((u8*)buf);
				if(is.eof())
					break;
				is.read(buf, 2);
				u16 message_size = readU16((u8*)buf);
				std::string message;
				message.reserve(message_size);
				for(u16 i=0; i<message_size; i++)
				{
					is.read(buf, 1);
					message.append(buf, 1);
				}
				// Pass on to the environment
				{
					//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
					m_env.processActiveObjectMessage(id, message);
				}
			}
		}
	}
	else if(command == TOCLIENT_HP)
	{
		std::string datastring((char*)&data[2], datasize-2);
		std::istringstream is(datastring, std::ios_base::binary);
		Player *player = m_env.getLocalPlayer();
		assert(player != NULL);
		u8 oldhp = player->hp;
		u8 hp = readU8(is);
		player->hp = hp;

		if(hp < oldhp)
		{
			// Add to ClientEvent queue
			ClientEvent event;
			event.type = CE_PLAYER_DAMAGE;
			event.player_damage.amount = oldhp - hp;
			m_client_event_queue.push_back(event);
		}
	}
	else if(command == TOCLIENT_MOVE_PLAYER)
	{
		std::string datastring((char*)&data[2], datasize-2);
		std::istringstream is(datastring, std::ios_base::binary);
		Player *player = m_env.getLocalPlayer();
		assert(player != NULL);
		v3f pos = readV3F1000(is);
		f32 pitch = readF1000(is);
		f32 yaw = readF1000(is);
		player->setPosition(pos);
		/*player->setPitch(pitch);
		player->setYaw(yaw);*/

		infostream<<"Client got TOCLIENT_MOVE_PLAYER"
				<<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
				<<" pitch="<<pitch
				<<" yaw="<<yaw
				<<std::endl;

		/*
			Add to ClientEvent queue.
			This has to be sent to the main program because otherwise
			it would just force the pitch and yaw values to whatever
			the camera points to.
		*/
		ClientEvent event;