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README.org
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README.org
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#+TITLE: The Reality Engine
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#+TITLE: Undâr Programming Language
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#+AUTHOR: Zongor
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#+EMAIL: archive@undar-lang.org
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#+DATE: [2025-04-05]
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@ -15,6 +15,21 @@
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· · · ᚾ]
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#+END_SRC
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* Undâr
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Undâr is a permacomputing oriented, statically-typed language with **first-class arrays**, **immediate-mode semantics**, and **symbolic clarity**
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- =Constrained systems=: microcontrollers, retro consoles (PS1, N64, Mac Classic)
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- =Portable environments=: Web (Emscripten), embedded, CLI Tui
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- =Permacomputing=: long-term survivability, sustainability, minimalism
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- =3D world-building=: built-in primitives for PS1/N64-style rendering
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- =Live development=: hot reloading, REPL, shadowing, symbol versioning
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It runs on the =Reality Engine=, a minimal C89 VM inspired by Uxn, Plan 9, and Forth - but built for =spatial software=, =deterministic execution=, and =software that lasts=.
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Sċieppan is a minimal macro assembler that uses s-expressions.
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You can view some examples in the =.lisp= files in =/test=
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The =Reality Engine= is a register-based virtual machine designed to render not just graphics, but persistent, inspectable, reproducible computational worlds.
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It is:
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@ -27,8 +42,8 @@ It is:
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**VM Architecture**
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| Feature | Specification |
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|--------------------+---------------------------------------------|
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| Instruction Format | 1-byte opcode, 3-byte operand (CISC-like) |
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|--------------------+-----------------------------------------------|
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| Instruction Format | 1-byte opcode, 3-variable operand (CISC-like) |
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| Register Set | 32 general-purpose registers (R0-R31) |
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| Initialization | **ZII**: Zero Is Initialization |
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| Memory Model | Frame-based arenas (function scope = frame) |
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@ -42,29 +57,17 @@ This ensures:
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- Perfect reproducibility
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- Safe failure modes
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* Undâr
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Undâr is a permacomputing oriented, statically-typed language with **first-class arrays**, **immediate-mode semantics**, and **symbolic clarity**
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- =Constrained systems=: microcontrollers, retro consoles (PS1, N64, Mac Classic)
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- =Portable environments=: Web (Emscripten), embedded, CLI Tui
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- =Permacomputing=: long-term survivability, sustainability, minimalism
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- =3D world-building=: built-in primitives for PS1/N64-style rendering
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- =Live development=: hot reloading, REPL, shadowing, symbol versioning
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It runs on the =Reality Engine=, a minimal C89 VM inspired by Uxn, Plan 9, and Forth - but built for =spatial software=, =deterministic execution=, and =software that lasts=.
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Sċieppan is a minimal lisp inpsired by sectorlisp.
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You can view some examples in the =.lisp= files in =/test=
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**Core Types**
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| Type | Description |
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|--------+-------------------------------------------|
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| =int= | 32-bit signed integer |
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| =nat= | 32-bit natural number |
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| =real= | Float/Q16.16 fixed-point real number |
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| =real= | Q16.16 fixed-point real number |
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| =str= | 4-byte packed string or fat pointer |
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| =bool= | Compile-time flag |
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| =str= | String |
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| =char= | Character |
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| =ref= | Reference prefix for passing by reference |
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**Array Semantics (Fortran-Style)**
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@ -190,27 +193,30 @@ Tunnels make I/O **uniform, composable, and archival**.
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**Build the Reality Engine**
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#+BEGIN_SRC sh
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git clone https://git.alfrescocavern.com/zongor/reality-engine.git
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cd reality-engine
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make
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./zre client.ul
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git clone https://git.alfrescocavern.com/zongor/undar-lang.git
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cd undar-lang && make
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#+END_SRC
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**Sample Program: =hello.ul=**
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**Sample Program: =hello.asm.lisp=**
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#+BEGIN_SRC ul
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function main(int argc, str[] argv) {
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str name = argc > 1 ? argv[1] : "World";
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print("Hello, {name}!");
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exits("Done");
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}
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#+BEGIN_SRC lisp
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((code
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(label main
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(load $0 &terminal-str)
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(load $1 &hello-str)
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(strlen $2 $1)
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(syscall DEVICE_WRITE $0 $1 $2)
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(load $3 &new-line)
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(string-length $4 $3)
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(syscall DEVICE-WRITE, $0, $3, $4)
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(halt)))
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(data
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(label terminal-str "/dev/term/0")
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(label new-line "\n")
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(label hello-str "nuqneH 'u'?")))
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#+END_SRC
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Run it:
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#+BEGIN_SRC sh
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./zre hello.ul Alice
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# Output: Hello, Alice!
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./build/linux/undar-linux-debug ./test/hello.asm.lisp
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#+END_SRC
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* Example: 3D Client (=client.ul=)
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@ -218,7 +224,7 @@ Run it:
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#+BEGIN_SRC ul
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use "common.ul";
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function main(int argc, str[] argv) {
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fn256 main(int argc, str[] argv) {
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nat w = 800, h = 450;
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Player me(argv[1], [0.0, 1.0, 2.0], PURPLE);
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@ -263,7 +269,7 @@ function main(int argc, str[] argv) {
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- Versioned plexes: forward/backward compatibility
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- Self-documenting syntax: just enough magic
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- Open standard: no vendor lock-in
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- Archive formats: =.ul=, =.ubin=, =.uatom=
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- Archive formats: =.ul=, =.rom=
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* License
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