etc
/
uxn
mirror of https://git.sr.ht/~rabbits/uxn
0
1
Fork 0
Code Issues Projects Releases Wiki Activity
1,815 Commits 6 Branches 6 Tags 3.7 MiB
C 84.8%
Shell 5.7%
MoonScript 5.6%
Lua 2.4%
Makefile 1.3%
Other 0.2%
Go to file
Weeble f5c816d215 (screen.c) Fix sprite draw at screen edge 
Problem - Sprites can be drawn at X/Y coordinates >= 0xfff9 to appear
partially over the left/upper screen boundary. But the dirty-rectangle
calculation doesn't account for this, so these updates will only appear
on the screen if something *else* dirties this area of the screen. This
can be observed in /projects/examples/devices/screen.tal where these
edges of the screen show stale content.

Solution - Detect wrapping and expand the dirty rectangle appropriately.
Change screen_change to take Uint16 to make sure values are truncated to
the intended range. Ignore changes that are fully off the screen.
 		2023-06-29 07:41:42 -07:00
etc (circle128) Added radius arg 2023-06-09 10:53:23 -07:00
projects (subleq.tal) Ported to immediate modes 2023-06-27 11:27:27 -07:00
src (screen.c) Fix sprite draw at screen edge 2023-06-29 07:41:42 -07:00
.build.yml Re-enable automated Windows build. 2023-01-31 17:17:11 +00:00
.clang-format * 2021-01-30 14:25:48 -08:00
.gitignore Archived old core 2023-03-12 14:49:58 -07:00
LICENSE init 2021-01-29 11:17:59 -08:00
README.md Update binary builds to point to drive.100r.co. 2023-06-09 18:13:44 +01:00
build.sh Removed the echo prints from the build file 2023-06-08 09:31:01 -07:00
mkfile enable "install" target on Plan 9, install as games/uxn* 2023-05-02 23:01:29 +00:00

README.md

Uxn

An assembler and emulator for the Uxn stack-machine, written in ANSI C.

Download binaries

Binaries are available for 64-bit x86 computers running Linux, Windows and macOS.

Build

Linux/OS X

To build the Uxn emulator, you must install SDL2 for your distro. If you are using a package manager:

sudo pacman -Sy sdl2             # Arch
sudo apt install libsdl2-dev     # Ubuntu
sudo xbps-install SDL2-devel     # Void Linux
brew install sdl2                # OS X

Build the assembler and emulator by running the build.sh script. The assembler(uxnasm) and emulator(uxnemu) are created in the ./bin folder.

./build.sh 
	--debug # Add debug flags to compiler
	--format # Format source code
	--install # Copy to ~/bin

If you wish to build the emulator without graphics mode:

cc src/devices/datetime.c src/devices/system.c src/devices/file.c src/uxn.c -DNDEBUG -Os -g0 -s src/uxncli.c -o bin/uxncli

Plan 9

To build and install the Uxn emulator on 9front, via npe:

mk install

If the build fails on 9front because of missing headers or functions, try again after rm -r /sys/include/npe.

Windows

Uxn can be built on Windows with MSYS2. Install by downloading from their website or with Chocolatey with choco install msys2. In the MSYS shell, type:

pacman -S git mingw-w64-x86_64-gcc mingw64/mingw-w64-x86_64-SDL2
export PATH="${PATH}:/mingw64/bin"
git clone https://git.sr.ht/~rabbits/uxn
cd uxn
./build.sh

If you'd like to work with the Console device in uxnemu.exe, run ./build.sh --console instead: this will bring up an extra window for console I/O unless you run uxnemu.exe in Command Prompt or PowerShell.

Getting Started

Emulator

To launch a .rom in the emulator, point the emulator to the target rom file:

bin/uxnemu bin/piano.rom

You can also use the emulator without graphics by using uxncli. You can find additional roms here, you can find prebuilt rom files here.

Assembler

The following command will create an Uxn-compatible rom from an uxntal file. Point the assembler to a .tal file, followed by and the rom name:

bin/uxnasm projects/examples/demos/life.tal bin/life.rom

I/O

You can send events from Uxn to another application, or another instance of uxn, with the Unix pipe. For a companion application that translates notes data into midi, see the shim.

uxnemu orca.rom | shim

GUI Emulator Options

  • -1x Force small scale
  • -2x Force medium scale
  • -3x Force large scale

GUI Emulator Controls

  • F1 toggle zoom
  • F2 toggle debug
  • F3 capture screen
  • F4 load launcher.rom

GUI Buttons

  • LCTRL A
  • LALT B
  • LSHIFT SEL
  • HOME START

Need a hand?

The following resources are a good place to start:

Contributing

Submit patches using git send-email to the ~rabbits/public-inbox mailing list.