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| packager=[[User:BgK|bgK]]| | | packager=[[User:phcoder|phcoder]]| |
| pkgend=-3ds.zip| | | pkgend=-3ds.zip| |
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| == Installation == | | == About == |
| There are two possible formats to be used: 3DSX and CIA.
| | ScummVM has been ported to the Nintendo 3DS. |
| The 3DSX format is considered more ethical because it does not make use of
| |
| invalid title IDs, which get logged. It is also compatible with homebrew loading
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| methods that do not involve CFW.
| |
| The 3DSX format is exclusively used by the Homebrew Launcher and its derivatives.
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| The CIA format can be installed directly to the 3DS home menu and can be launched
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| using any CFW (Custom Firmware) of your choice.
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|
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|
| Installing the Homebrew Launcher or any CFW is beyond the scope of this page.
| | For more information, including how to install and use ScummVM, see the [https://docs.scummvm.org/en/latest/other_platforms/nintendo_3ds.html Nintendo 3DS user documentation]. |
|
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|
| === 3DSX installation === | | == Developer information == |
| You need to merely extract the ScummVM 3DSX files to your SD card so that all
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| files reside in the <code>/3ds/scummvm/</code> directory. It can then be launched by Homebrew Launcher
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| or a similar implementation.
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|
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|
| === CIA installation === | | === Compiling ScummVM === |
| The CIA format requires a DSP binary dump saved on your SD card as <code>/3ds/dspfirm.cdc</code>
| | Instructions on how to compile ScummVM for the 3DS can be found [[Compiling ScummVM/Nintendo 3DS|here]]. |
| for proper audio support. You can search online to find software to dump this. | |
| Not having this file will cause many problems with games that need audio, sometimes
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| even crashing, so this is NOT considered optional.
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|
| |
|
| Using any CIA installation software (search elsewhere for that), you need to install
| | === Debugging ScummVM === |
| the <code>scummvm.cia</code> file.
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|
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|
| == Controls ==
| | ''This section is based on information from [https://bugs.scummvm.org/ticket/11292#comment:4 Trac #11292].'' |
| === Default key mappings ===
| |
|
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|
| The key mappings can be customized in the options dialog for the global mappings,
| | When reporting crashes to the issue tracker, it is recommended that you capture a backtrace of the crash? It's a bit of a convoluted process but it's not possible to do much without it. It's described here if you are not familiar: |
| and in the edit game dialog for per-game mappings. Per-game mappings overlay the
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| global mappings, so if a button is bound to an action twice, the per-game mapping
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| wins.
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|
| |
|
| The default keymap is: | | * Create a build of ScummVM using "./configure --host=3ds --disable-all-engines --enable-engines=scumm_7_8,he,sci32 --enable-all-engines --enable-debug" |
| {{3DSControls}}
| | * Get devkitARM from here: https://devkitpro.org/wiki/Getting_Started. You don't need to get the whole thing working, just the GDB debugger. |
| | * Start ScummVM on your 3DS, go to the Rosalina menu (L+Down+Select), enable the debugger (Debugger options > enable debugger), go to the process list and select ScummVM (3dsx_app if you used the homebrew launcher). Take note of the IP address of your 3DS and the debugger port. They are displayed in the menu. For example, it might look like 192.168.1.87:4000. Close the Rosalina menu. If it closes ScummVM, try again, but open a dialog in ScummVM before opening the Rosalina menu (The keypress to close Rosalina is sometimes passed to ScummVM). |
| | * On your computer in the devkitARM shell, run "arm-none-eabi-gdb /path/to/scummvm.elf" (with the location where you downloaded that file). Then, in GDB, enter "target remote 192.168.1.87:4000" (with your IP and port) to connect to the 3DS. Enter 'c' to resume execution. |
| | * On the 3DS, reproduce the crash. |
| | * On the computer, GDB should have trapped the error. Enter "thread apply all bt" to print a backtrace. |
|
| |
|
| === Hover mode ===
| | Please copy the backtrace into the ticket as well as other warnings or messages you may see in the debugger output. |
| When you use the touchscreen, you are simulating the mere moving of the mouse. You
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| can click only with taps, meaning it is impossible to drag stuff or hold down a
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| mouse button without using buttons mapped to right/left-click.
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|
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|
| === Drag mode ===
| | In case you don't succeed in capturing a backtrace, please attach the crash dump from the Luma error screen (they are saved on the SD card in /luma/dumps). |
| Every time you touch and release the touchscreen, you are simulating the click and
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| release of the mouse buttons. At the moment, this is only a left-click.
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|
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|
| === Magnify mode ===
| | It's also recommended that you attach a copy of the log file, which can be found at "sdmc:/3ds/scummvm/scummvm.log". |
| Due to the low resolutions of the 3DS's two screens (400x240 for the top, and 320x240
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| for the bottom), games that run at a higher resolution will inevitably lose some visual
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| detail from being scaled down. This can result in situations where essential information
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| is undiscernable, such as text. Magnify mode increases the scale factor of the top screen
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| back to 1; the bottom screen remains unchanged. The touchscreen can then be used to change
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| which part of the game display is being magnified. This can all be done even in situations
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| where the cursor is disabled, such as during full-motion video (FMV) segments.
| |
| | |
| When activating magnify mode, touchscreen controls are automatically switched to hover
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| mode; this is to reduce the risk of the user accidentally inputting a click when changing
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| the magnified area via dragging the stylus. Clicking can still be done at will as in normal
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| hover mode. Turning off magnify mode will revert controls back to what was being used
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| previously (ex: if drag mode was in use prior to activating magnify mode, drag mode will
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| be reactivated upon exiting magnify mode), as well as restore the top screen's previous
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| scale factor.
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| | |
| Currently magnify mode can only be used when the following conditions are met:
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| * In the 3DS config menu, "Use Screen" is set to "Both"
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| * A game is currently being played
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| * The horizontal and/or vertical resolution in-game is greater than that of the top screen
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| | |
| Magnify mode cannot be used in the Launcher menu.
| |
| | |
| == Supported Games ==
| |
| While all the games should run on the 3DS (report if they do not), there are
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| many games which are unplayable due to the lack of CPU speed on the 3DS. So if
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| you play any games that run really slow, this is not considered a bug, but rather
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| a hardware limitation.
| |
| | |
| The New 3DS console has much better performance, but there are still many newer and
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| high-resolution games that cannot be played. A list of these unplayable games and
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| game engines will eventually be listed here.
| |
| | |
| == Compiling ==
| |
| === Prerequisites ===
| |
| * Latest version of devkitPro, which comes with devkitARM and <code>libctru</code>
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| * <code>citro3d</code> thorugh devkitPro's pacman
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| * Optional: You should compile third-party libraries for the 3ds (commonly referred to as portlibs in the devkitPRO community). Some games requires these to operate properly.
| |
| | |
| === Compiling third-party libraries ===
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| It is strongly recommended that you use devkitPro's pacman in order to get the most recent
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| portlibs for your build.
| |
| | |
| The following libraries can be downloaded with pacman:
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| | |
| {|class="wikitable"
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| ! Library || Package
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| |-
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| | zlib || 3ds-zlib
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| |-
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| | libpng || 3ds-libpng
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| |-
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| | libjpeg || 3ds-libjpeg-turbo
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| |-
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| | freetype2 || 3ds-freetype
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| |-
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| | libmad || 3ds-libmad
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| |-
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| | libogg || 3ds-libogg
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| |-
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| | tremor || 3ds-libvorbisidec
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| |-
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| | flac || 3ds-flac
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| |-
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| | curl || 3ds-curl
| |
| |}
| |
| | |
| At the moment of writing, the version of <code>freetype2</code> packaged by devkitPro has an issue
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| where it allocates too much data on the stack when ScummVM loads GUI themes.
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| As a workaround, an older version can be used. Version 2.6.5 is known to work well. The
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| instructions below can be used to compile it.
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| | |
| At the moment of writing, <code>faad</code> is not in the devkitPro 3DS pacman repository. It
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| can be compiled by following the instructions in the section below, in case it cannot
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| be found through pacman.
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| | |
| The following pacman packages are also recommended:
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| * <code>3ds-dev</code>
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| * <code>devkitpro-pkgbuild-helpers</code>
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| | |
| Once you have the <code>devkitpro-pkgbuild-helpers</code> package, you should be able to find
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| the following scripts in your <code>/opt/devkitpro</code> folder:
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| * <code>devkitarm.sh</code>
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| * <code>3dsvars.sh</code>
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| | |
| Run them one after the other with `source` in order to setup your environment variables
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| for cross-compiling:
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| <syntaxhighlight lang="bash">
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| source /opt/devkitpro/devkitarm.sh
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| source /opt/devkitpro/3dsvars.sh
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| </syntaxhighlight>
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| | |
| After that, you can download the libraries you want to cross compile, run any autoconf
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| scripts that they may have, and then they can usually be built with the following steps
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| from their source directory:
| |
| | |
| <syntaxhighlight lang="bash">
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| mkdir -p $PORTLIBS
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| ./configure --prefix=$PORTLIBS --host=arm-none-eabi --disable-shared --enable-static
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| make
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| make install
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| </syntaxhighlight>
| |
| | |
| Most libraries used can be compiled with same commands and configuration flags.
| |
| | |
| === Manually setting up the environment ===
| |
| In case you don't have the helpers package downloaded, you can use the following to set-up
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| your environment variables.
| |
| | |
| It is assumed that you have these variables already set up. If not, then do so:
| |
| {|class="wikitable"
| |
| | DEVKITPRO || Your root devkitPro directory
| |
| |-
| |
| | DEVKITARM || Your root devkitARM directory (probably same as $DEVKITPRO/devkitARM)
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| |-
| |
| | CTRULIB || Your root libctru directory (probably same as $DEVKITPRO/libctru)
| |
| |}
| |
| | |
| In the source directory of the library:
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| <syntaxhighlight lang="bash">
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| export PORTLIBS=$DEVKITPRO/portlibs/3ds
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| export PATH=$DEVKITARM/bin:$PATH
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| export PKG_CONFIG_PATH=$PORTLIBS/lib/pkgconfig
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| export PKG_CONFIG_LIBDIR=$PORTLIBS/lib/pkgconfig
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| export CFLAGS="-g -march=armv6k -mtune=mpcore -mfloat-abi=hard -O2
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| -mword-relocations -ffunction-sections -fdata-sections"
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| export CPPFLAGS="-I$PORTLIBS/include -I$CTRULIB/include"
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| export LDFLAGS="-L$PORTLIBS/lib"
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| </syntaxhighlight>
| |
| | |
| == Compiling ScummVM ==
| |
| Do the following in a fresh terminal.
| |
| | |
| In case you get a "compiler not found" message, add the toolchain's executables to your PATH:
| |
| <syntaxhighlight lang="bash">
| |
| export PATH=$DEVKITARM/bin:$PATH
| |
| </syntaxhighlight>
| |
| | |
| Note: In more recent codebases of ScummVM, you may or may not need to set the following beforehand:
| |
| <syntaxhighlight lang="bash">
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| export PKG_CONFIG_LIBDIR=$PORTLIBS/lib/pkgconfig
| |
| </syntaxhighlight>
| |
| See above for <code>$PORTLIBS</code>.
| |
| | |
| ScummVM doesn't provide the CA certificates bundle required by the cloud synchronization features.
| |
| You need to download it from the curl website: https://curl.haxx.se/ca/cacert.pem, and instruct
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| the build system to package it in the binary:
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| <syntaxhighlight lang="bash">
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| export DIST_3DS_EXTRA_FILES=/path/to/cacert.pem
| |
| </syntaxhighlight>
| |
| The name of the file must be <code>cacert.pem</code>.
| |
| | |
| From the root of the scummvm repository:
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| <syntaxhighlight lang="bash">
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| ./configure --host=3ds --enable-plugins --default-dynamic
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| make
| |
| </syntaxhighlight>
| |
| | |
| Additionally compile to specific formats to be used on the 3DS:
| |
| <syntaxhighlight lang="bash">
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| make scummvm.3dsx
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| make scummvm.cia
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| </syntaxhighlight>
| |
| | |
| Assuming everything was successful, you'll be able to find the binary
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| files in the root of your scummvm folder.
| |
| | |
| Note: for the CIA format, you will need the <code>makerom</code> and <code>bannertool</code> tools which are
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| not supplied with devkitPro.
| |
| | |
| Note: using dynamic plugins as suggested is required when building with most or all of the
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| game engines enabled in order to keep the memory usage low and avoid stability issues.
| |
Nintendo 3DS Port