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minetest/doc/android.md
grorp 404a063fdf
Touchscreen: Allow mods to swap the meaning of short and long taps (punch with single tap) (#14087) 
This works through a new field "touch_interaction" in item definitions.
The two most important use cases are:
 - Punching players/entities with short tap instead of long tap (enabled by default)
 - Making items usable that require holding the place button (e.g. bows and shields in MC-like games)
2024-01-21 17:44:08 +01:00

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Minetest Android build

All Minetest builds, including the Android variant, are based on the same code. However, additional Java code is used for proper Android integration.

Controls

Compared to Minetest binaries for PC, the Android port has limited functionality due to limited capabilities of common devices. What can be done is described below:

While you're playing the game normally (that is, no menu or inventory is shown), the following controls are available:

  • Look around: touch screen and slide finger
  • Tap: Place a node, punch an object or use the selected item (default)
  • Long tap: Dig a node or use the selected item (default)
  • Press back: Pause menu
  • Touch buttons: Press button
  • Buttons:
  1. Left upper corner: Chat
  2. Right lower corner: Jump
  3. Right lower corner: Crouch
  4. Left lower corner (Joystick): Walk/step...
  5. Left lower corner: Display inventory

When a menu or inventory is displayed:

  • Double tap outside menu area: Close menu
  • Press back: Close menu
  • Tap on an item stack: Select that stack
  • Tap on an empty slot: If a stack are selected already, that stack is placed here
  • Drag and drop: Touch stack and hold finger down, move the stack to another slot, tap another finger while keeping first finger on screen --> places a single item from dragged stack into current (first touched) slot. If a stack is selected, the stack will be split as half and one of the splitted stack will be selected

Limitations

  • Some old Android device only support 2 touch at a time, some game/mod contain button combination that need 3 touch (example: jump + Aux1 + hold)
  • Complicated control can be difficult or impossible on Android device

File Path

There are some settings especially useful for Android users. The Minetest-wide configuration file can usually be found at:

  • Before 5.4.2:
    • /sdcard/Minetest/ or /storage/emulated/0/ if stored on the device
    • /storage/emulated/(varying folder name)/ if stored on an SD card
  • After 5.4.2:
    • /sdcard/Android/data/net.minetest.minetest/ or /storage/emulated/0/Android/data/net.minetest.minetest/ if stored on the device
    • /storage/emulated/(varying folder name)/Android/data/net.minetest.minetest/ if stored on the SD card
  • Learn more about Android directory

Useful settings

gui_scaling

this is a user-specified scaling factor for the GUI in case main menu is too big or small on your device, try changing this value.

mapblock_limit

Mobile device generally have less RAM than PC, this setting limit how many mapblock can keep in RAM

fps_limit

this setting limit max FPS (Frame per second). Default value is 60, which lowest Android device screen refresh rate commonly found, but if you're using an device have lower refresh rate, change this

Requirements

The minimal and recommended system requirements for Minetest are listed below.

CPU

Supported architectures:

  1. ARM v7
  2. ARM v8
  3. x86
  4. x86_64

CPU architectures similar to ARM or x86 might run Minetest but are not tested.

Minimum

  1. Graphics API: OpenGL ES 1.0
    • Shaders might not work correctly or work at all on OpenGL ES 1.0.
  2. Android version: Android 4.1 (API Level 16)
  3. Free RAM: 500 MB
  4. Free storage: 100 MB
    • More storage is highly recommended

Recommended

  1. Graphics API: OpenGL ES 2.0
  2. Android version: Android 4.4 (API Level 19) or newer
  3. Empty RAM: 850 MB
  4. Free storage: 480 MB

Rendering

Unlike on PC, Android devices use OpenGL ES which less powerful than OpenGL, thus some shader settings cannot be used on OpenGL ES. Changing the graphic driver setting to OpenGL will result in undesirable behavior.

Building Requirements

In order to build, your PC has to be set up to build Minetest in the usual manner (see the regular Minetest documentation for how to get this done). In addition to what is required for Minetest in general, you will need the following software packages. The version number in parenthesis denotes the version that was tested at the time this README was drafted; newer/older versions may or may not work.

  • Android SDK 29
  • Android NDK r21
  • Android Studio 3 [optional]

Additionally, you'll need to have an Internet connection available on the build system, as the Android build will download some source packages.

Build

The new build system Minetest Android is fully functional and is designed to speed up and simplify the work, as well as adding the possibility of cross-platform build. You can use ./gradlew assemblerelease or ./gradlew assembledebug from the command line or use Android Studio and click the build button.

When using gradlew, the newest NDK will be downloaded and installed automatically. Or you can create a local.properties file and specify sdk.dir and ndk.dir yourself.

  • In order to make a release build you'll have to have a keystore setup to sign the resulting apk package. How this is done is not part of this README. There are different tutorials on the web explaining how to do it

    • choose one yourself.

  • Once your keystore is setup, enter the android subdirectory and create a new file "ant.properties" there. Add following lines to that file:

    key.store= key.alias=Minetest