minetest-engine-minetest/README.md

Minetest5
=========

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Minetest is a free open-source voxel game engine with easy modding and game creation.
this source is minetest modified up to 5.2 with namespace execution for distros integration with OS's
also features the client identification patch to property get rid of cheaters.

Copyright (C) 2010-2019 Perttu Ahola <celeron55@gmail.com>
and contributors (see source file comments and the version control log)

In case you downloaded the source code
--------------------------------------

If you downloaded the **Minetest5 Engine** source code from git, in which this file is
contained, you probably want to download the Minetest5 Game at https://codeberg.org/minenux/minetest-game-minetest/src/branch/stable-5.2
project too. See its README.md information. Those sources are a little modification of original Minetest.

For Minetest4 series of same engine please use the respective branch.

Table of Contents
------------------

1. [Further Documentation](#further-documentation)
2. [Default Controls](#default-controls)
3. [Paths](#paths)
4. [Configuration File](#configuration-file)
5. [Command-line Options](#command-line-options)
6. [Compiling](#compiling)
7. [Docker](#docker)
8. [Version Scheme](#version-scheme)


Further documentation
----------------------
- This sources https://codeberg.org/minenux/minetest-engine/src/branch/stable-5.2-namespace
- Minetest4 sources https://codeberg.org/minenux/minetest-engine/src/branch/stable-4.0-namespace
- Wiki of this project (minenux) https://codeberg.org/venenux/venenux-minetest/wiki
- Original Minetest Website: http://minetest.org/
- Original Minetest Wiki: http://wiki.minetest.org/
- Minetest Forum: http://forum.minetest.org/
- Original Minetest GitHub: https://github.com/minetest/minetest/
- [doc/](doc/) directory of source distribution

Generals of game
----------------

This is **an engine that can acts as server and client**, it has **two main components**: 

1. the **games** (that contains the mods and definition of how to play) and 
2. the **world** (that contains the creeated and playable data). 

Paths places of those are in the [Paths](#paths) sections of this file.

Players used the client role of the program, that joins to a server that can be the same invoked 
or a remote server, currently many phone clients (apps like minetest that stolen its name) 
just used those remote servers to play.

Default controls
----------------

All controls are re-bindable using settings.
Some can be changed in the key config dialog in the settings tab.

| Button                        | Action                                                         |
|-------------------------------|----------------------------------------------------------------|
| Move mouse                    | Look around                                                    |
| W, A, S, D                    | Move                                                           |
| Space                         | Jump/move up                                                   |
| Shift                         | Sneak/move down                                                |
| Q                             | Drop itemstack                                                 |
| Shift + Q                     | Drop single item                                               |
| Left mouse button             | Dig/punch/take item                                            |
| Right mouse button            | Place/use                                                      |
| Shift + right mouse button    | Build (without using)                                          |
| I                             | Inventory menu                                                 |
| Mouse wheel                   | Select item                                                    |
| 0-9                           | Select item                                                    |
| Z                             | Zoom (needs zoom privilege)                                    |
| T                             | Chat                                                           |
| /                             | Command                                                        |
| Esc                           | Pause menu/abort/exit (pauses only singleplayer game)          |
| R                             | Enable/disable full range view                                 |
| +                             | Increase view range                                            |
| -                             | Decrease view range                                            |
| K                             | Enable/disable fly mode (needs fly privilege)                  |
| P                             | Enable/disable pitch move mode                                 |
| J                             | Enable/disable fast mode (needs fast privilege)                |
| H                             | Enable/disable noclip mode (needs noclip privilege)            |
| E                             | Move fast in fast mode                                         |
| F1                            | Hide/show HUD                                                  |
| F2                            | Hide/show chat                                                 |
| F3                            | Disable/enable fog                                             |
| F4                            | Disable/enable camera update (Mapblocks are not updated anymore when disabled, disabled in release builds)  |
| F5                            | Cycle through debug information screens                        |
| F6                            | Cycle through profiler info screens                            |
| F7                            | Cycle through camera modes                                     |
| F9                            | Cycle through minimap modes                                    |
| Shift + F9                    | Change minimap orientation                                     |
| F10                           | Show/hide console                                              |
| F12                           | Take screenshot                                                |

Paths
-----

Locations:

* `bin`   - Compiled binaries
* `share` - Distributed read-only data
* `user`  - User-created modifiable data

Where each location is on each platform:

* Others OS's / RUN_IN_PLACE source:
    * `bin`   = `bin`
    * `share` = `.`
    * `user`  = `.`
* Linux installed:
    * `bin`   = `/usr/bin`
    * `share` = `/usr/share/minetest5`
    * `user`  = `~/.minetest5`
* macOS:
    * `bin`   = `Contents/MacOS`
    * `share` = `Contents/Resources`
    * `user`  = `Contents/User OR ~/Library/Application Support/minetest5`

Worlds can be found as separate folders in: `user/worlds/`

Configuration file
------------------

- Default location:
    `user/minetest5.conf`
- This file is created by closing Minetest for the first time.
- A specific file can be specified on the command line:
    `--config <path-to-file>`
- A run-in-place build will look for the configuration file in
    `location_of_bin/../minetest5.conf` and also `location_of_bin/../../minetest5.conf`

Command-line options
--------------------

- Use `--help`

Compiling
---------

### Compiling on GNU/Linux

#### Dependencies

| Dependency | Version | Commentary |
|------------|---------|------------|
| GCC        | 4.9+    | Can be replaced with Clang 3.4+ |
| CMake      | 2.6+    |            |
| Irrlicht   | 1.6.0+  | Custom version recommended, see https://github.com/minetest/irrlicht |
| SQLite3    | 3.0+    |            |
| LuaJIT     | 2.0+    | Bundled Lua 5.1 is used if not present |
| GMP        | 5.0.0+  | Bundled mini-GMP is used if not present |
| JsonCPP    | 1.0.0+  | Bundled JsonCPP is used if not present |

For Debian/Ubuntu users:

    sudo apt install g++ make libc6-dev libirrlicht-dev cmake libbz2-dev libpng-dev libjpeg-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev libogg-dev libvorbis-dev libopenal-dev libcurl4-gnutls-dev libfreetype6-dev zlib1g-dev libgmp-dev libjsoncpp-dev

For Fedora users:

    sudo dnf install make automake gcc gcc-c++ kernel-devel cmake libcurl-devel openal-soft-devel libvorbis-devel libXxf86vm-devel libogg-devel freetype-devel mesa-libGL-devel zlib-devel jsoncpp-devel irrlicht-devel bzip2-libs gmp-devel sqlite-devel luajit-devel leveldb-devel ncurses-devel doxygen spatialindex-devel bzip2-devel
    
For Arch users:

    sudo pacman -S base-devel libcurl-gnutls cmake libxxf86vm irrlicht libpng sqlite libogg libvorbis openal freetype2 jsoncpp gmp luajit leveldb ncurses

For Alpine users:

    sudo apk add build-base irrlicht-dev cmake bzip2-dev libpng-dev jpeg-dev libxxf86vm-dev mesa-dev sqlite-dev libogg-dev libvorbis-dev openal-soft-dev curl-dev freetype-dev zlib-dev gmp-dev jsoncpp-dev luajit-dev

#### Download

You can install Git for easily keeping your copy up to date.
If you don’t want Git, read below on how to get the source without Git.
This is an example for installing Git on Debian/Ubuntu:

    sudo apt install git

For Fedora users:

    sudo dnf install git

Download source (this is the URL to the latest of source repository, which might not work at all times) using Git:

    git clone --recursive https://codeberg.org/minenux/minetest-engine.git minetest
    cd minetest

Download minetest_game (otherwise only the "Minimal development test" game is available) using Git:

    git submodule init && git submodule update --recursive

Download source, without using Git:

    wget https://codeberg.org/minenux/minetest-engine/archive/stable-5.2.tar.gz
    tar xf stable-5.2.tar.gz
    cd stable-5.2

Download minetest_game, without using Git:

    cd games/
    wget https://codeberg.org/minenux/minetest-game-minetest/archive/stable-5.2.tar.gz
    tar xf stable-5.2.tar.gz
    mv minetest-game-minetest_stable-5.2 minetest
    cd ..

#### Build

Build a version that runs directly from the source directory there program are:

    cmake . -DRUN_IN_PLACE=TRUE
    make -j$(nproc)

Run it:

    ./bin/minetest

- Use `cmake . -LH` to see all CMake options and their current state.
- If you want to install it system-wide (or are making a distribution package),
  you will want to use `-DRUN_IN_PLACE=FALSE`.
- You can build a bare server by specifying `-DBUILD_SERVER=TRUE`.
- You can disable the client build by specifying `-DBUILD_CLIENT=FALSE`.
- You can select between Release and Debug build by `-DCMAKE_BUILD_TYPE=<Debug or Release>`.
  - Debug build is slower, but gives much more useful output in a debugger.
- If you build a bare server you don't need to have Irrlicht installed.
  - In that case use `-DIRRLICHT_SOURCE_DIR=/the/irrlicht/source`.

### CMake options

General options and their default values:

    BUILD_CLIENT=TRUE          - Build Minetest client
    BUILD_SERVER=FALSE         - Build Minetest server
    CMAKE_BUILD_TYPE=Release   - Type of build (Release vs. Debug)
        Release                - Release build
        Debug                  - Debug build
        SemiDebug              - Partially optimized debug build
        RelWithDebInfo         - Release build with debug information
        MinSizeRel             - Release build with -Os passed to compiler to make executable as small as possible
    ENABLE_CURL=ON             - Build with cURL; Enables use of online mod repo, public serverlist and remote media fetching via http
    ENABLE_CURSES=ON           - Build with (n)curses; Enables a server side terminal (command line option: --terminal)
    ENABLE_FREETYPE=ON         - Build with FreeType2; Allows using TTF fonts
    ENABLE_GETTEXT=ON          - Build with Gettext; Allows using translations
    ENABLE_GLES=OFF            - Build for OpenGL ES instead of OpenGL (requires support by Irrlicht)
    ENABLE_LEVELDB=ON          - Build with LevelDB; Enables use of LevelDB map backend
    ENABLE_POSTGRESQL=ON       - Build with libpq; Enables use of PostgreSQL map backend (PostgreSQL 9.5 or greater recommended)
    ENABLE_REDIS=ON            - Build with libhiredis; Enables use of Redis map backend
    ENABLE_SPATIAL=ON          - Build with LibSpatial; Speeds up AreaStores
    ENABLE_SOUND=ON            - Build with OpenAL, libogg & libvorbis; in-game sounds
    ENABLE_LUAJIT=ON           - Build with LuaJIT (much faster than non-JIT Lua)
    ENABLE_SYSTEM_GMP=ON       - Use GMP from system (much faster than bundled mini-gmp)
    ENABLE_SYSTEM_JSONCPP=OFF  - Use JsonCPP from system
    OPENGL_GL_PREFERENCE=LEGACY - Linux client build only; See CMake Policy CMP0072 for reference
    RUN_IN_PLACE=FALSE         - Create a portable install (worlds, settings etc. in current directory)
    USE_GPROF=FALSE            - Enable profiling using GProf
    VERSION_EXTRA=             - Text to append to version (e.g. VERSION_EXTRA=foobar -> Minetest 0.4.9-foobar)

Library specific options:

    BZIP2_INCLUDE_DIR               - Linux only; directory where bzlib.h is located
    BZIP2_LIBRARY                   - Linux only; path to libbz2.a/libbz2.so
    CURL_DLL                        - Only if building with cURL on Windows; path to libcurl.dll
    CURL_INCLUDE_DIR                - Only if building with cURL; directory where curl.h is located
    CURL_LIBRARY                    - Only if building with cURL; path to libcurl.a/libcurl.so/libcurl.lib
    EGL_INCLUDE_DIR                 - Only if building with GLES; directory that contains egl.h
    EGL_LIBRARY                     - Only if building with GLES; path to libEGL.a/libEGL.so
    FREETYPE_INCLUDE_DIR_freetype2  - Only if building with FreeType 2; directory that contains an freetype directory with files such as ftimage.h in it
    FREETYPE_INCLUDE_DIR_ft2build   - Only if building with FreeType 2; directory that contains ft2build.h
    FREETYPE_LIBRARY                - Only if building with FreeType 2; path to libfreetype.a/libfreetype.so/freetype.lib
    FREETYPE_DLL                    - Only if building with FreeType 2 on Windows; path to libfreetype.dll
    GETTEXT_DLL                     - Only when building with gettext on Windows; path to libintl3.dll
    GETTEXT_ICONV_DLL               - Only when building with gettext on Windows; path to libiconv2.dll
    GETTEXT_INCLUDE_DIR             - Only when building with gettext; directory that contains iconv.h
    GETTEXT_LIBRARY                 - Only when building with gettext on Windows; path to libintl.dll.a
    GETTEXT_MSGFMT                  - Only when building with gettext; path to msgfmt/msgfmt.exe
    IRRLICHT_DLL                    - Only on Windows; path to Irrlicht.dll
    IRRLICHT_INCLUDE_DIR            - Directory that contains IrrCompileConfig.h
    IRRLICHT_LIBRARY                - Path to libIrrlicht.a/libIrrlicht.so/libIrrlicht.dll.a/Irrlicht.lib
    LEVELDB_INCLUDE_DIR             - Only when building with LevelDB; directory that contains db.h
    LEVELDB_LIBRARY                 - Only when building with LevelDB; path to libleveldb.a/libleveldb.so/libleveldb.dll.a
    LEVELDB_DLL                     - Only when building with LevelDB on Windows; path to libleveldb.dll
    PostgreSQL_INCLUDE_DIR          - Only when building with PostgreSQL; directory that contains libpq-fe.h
    PostgreSQL_LIBRARY              - Only when building with PostgreSQL; path to libpq.a/libpq.so/libpq.lib
    REDIS_INCLUDE_DIR               - Only when building with Redis; directory that contains hiredis.h
    REDIS_LIBRARY                   - Only when building with Redis; path to libhiredis.a/libhiredis.so
    SPATIAL_INCLUDE_DIR             - Only when building with LibSpatial; directory that contains spatialindex/SpatialIndex.h
    SPATIAL_LIBRARY                 - Only when building with LibSpatial; path to libspatialindex_c.so/spatialindex-32.lib
    LUA_INCLUDE_DIR                 - Only if you want to use LuaJIT; directory where luajit.h is located
    LUA_LIBRARY                     - Only if you want to use LuaJIT; path to libluajit.a/libluajit.so
    MINGWM10_DLL                    - Only if compiling with MinGW; path to mingwm10.dll
    OGG_DLL                         - Only if building with sound on Windows; path to libogg.dll
    OGG_INCLUDE_DIR                 - Only if building with sound; directory that contains an ogg directory which contains ogg.h
    OGG_LIBRARY                     - Only if building with sound; path to libogg.a/libogg.so/libogg.dll.a
    OPENAL_DLL                      - Only if building with sound on Windows; path to OpenAL32.dll
    OPENAL_INCLUDE_DIR              - Only if building with sound; directory where al.h is located
    OPENAL_LIBRARY                  - Only if building with sound; path to libopenal.a/libopenal.so/OpenAL32.lib
    OPENGLES2_INCLUDE_DIR           - Only if building with GLES; directory that contains gl2.h
    OPENGLES2_LIBRARY               - Only if building with GLES; path to libGLESv2.a/libGLESv2.so
    SQLITE3_INCLUDE_DIR             - Directory that contains sqlite3.h
    SQLITE3_LIBRARY                 - Path to libsqlite3.a/libsqlite3.so/sqlite3.lib
    VORBISFILE_DLL                  - Only if building with sound on Windows; path to libvorbisfile-3.dll
    VORBISFILE_LIBRARY              - Only if building with sound; path to libvorbisfile.a/libvorbisfile.so/libvorbisfile.dll.a
    VORBIS_DLL                      - Only if building with sound on Windows; path to libvorbis-0.dll
    VORBIS_INCLUDE_DIR              - Only if building with sound; directory that contains a directory vorbis with vorbisenc.h inside
    VORBIS_LIBRARY                  - Only if building with sound; path to libvorbis.a/libvorbis.so/libvorbis.dll.a
    XXF86VM_LIBRARY                 - Only on Linux; path to libXXf86vm.a/libXXf86vm.so
    ZLIB_DLL                        - Only on Windows; path to zlib1.dll
    ZLIB_INCLUDE_DIR                - Directory that contains zlib.h
    ZLIB_LIBRARY                    - Path to libz.a/libz.so/zlib.lib


Docker
------

Images are built on each commit and available using the following tag scheme:

* `registry.gitlab.com/minetest/minetest/server:latest` (latest build)
* `registry.gitlab.com/minetest/minetest/server:<branch/tag>` (current branch or current tag)
* `registry.gitlab.com/minetest/minetest/server:<commit-id>` (current commit id)

If you want to test it on a Docker server you can easily run:

	sudo docker run registry.gitlab.com/minetest/minetest/server:<docker tag>

If you want to use it in a production environment you should use volumes bound to the Docker host
to persist data and modify the configuration:

	sudo docker create -v /home/minetest/data/:/var/lib/minetest/ -v /home/minetest/conf/:/etc/minetest/ registry.gitlab.com/minetest/minetest/server:master

Data will be written to `/home/minetest/data` on the host, and configuration will be read from `/home/minetest/conf/minetest.conf`.

**Note:** If you don't understand the previous commands please read the official Docker documentation before use.

You can also host your Minetest server inside a Kubernetes cluster. See our example implementation in [`misc/kubernetes.yml`](misc/kubernetes.yml).


Version scheme
--------------

We use `major.minor.patch` since 5.0.0-dev. Prior to that we used `0.major.minor`.

In minenux we used `4.minor.patch` for 0.4.X and `5.2.patch` for 5.2.X

- Major in minenux is used only to those two releases, until 6.X comes in.
- Minor in 4.X will be always "0" cos will be only backported things.
- Patch is incremented when release contains bugfixes and veryminor/trivial features.

In minenux we do not use "-dev" notation, next release is never reached until 
a new tag. We only backports patchs and push bugfixes, fetures are avoided as possible.