## What are the changes about?
TL;DR:
Slaps the entire LuaJIT runtime onto Ly, allowing for the creation of custom dynamic animations like GameOfLife, ColorWave, Doom, etc.
This PR adds the [ziglua](https://github.com/natecraddock/ziglua?ref=zig-0.16) dependency for its zig bindings and considerable buildtime config (mainly lua version selection).
### Example
<video src="/attachments/3f91cf72-ae24-459c-8ef6-099f71e866fd" title="Screencast_20260519_172320" controls></video>
```lua
ly.frame_delay = 5
local timer = 0
local clock = os.clock()
local clock_diff = 0
function draw()
timer = timer + 1
byte = string.byte(' ')
clock_diff = os.clock() - clock
clock = os.clock()
timer = timer + clock_diff
for x = 0, ly.width-1 do
for y = 0, ly.height-1 do
local xc = 0xFF
if x < 255 then xc = ((x + math.floor(timer / 2)) * 3) % 255 else xc = 0 end
local yc = 0xFF
if y < 255 then yc = ((y) * 3) % 255 else yc = 0 end
ly.putCell(byte, xc, bit.bor(xc, yc), x, y)
end
end
end
```
### The API
The API that Ly gives to the user is minimal. A table is globally available, named `ly`, which provides the following:
| Member | Purpose |
|---------|---------|
| `ly.width` & `ly.height` | Respective Width/Height from the `TerminalBuffer` |
| `ly.putCell(byte, fg, bg, x, y)` | Literally `Cell.init(byte, fg, bg).put(x, y)`.|
| `ly.clock()` | The current real-time, in microseconds. |
### Error Handling
On a Lua Error, Ly won't quit but will instead paint the entire background red. The lua error in question can be found in the Ly log file and on-screen.
```log
2026-05-19 16:13:40 [err/Lua] Error (Cannot call draw()): attempt to call a nil value
2026-05-19 11:05:51 [err/Lua] Lua Error: ...dsammyt/programming/probe/ly/scratch/testConfig/test.lua:30: bad argument #1 to 'ipairs' (table expected, got number)
```
## Pre-requisites
- [X] I have tested & confirmed the changes work locally
- [X] I have run `zig fmt` throughout my changes
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/1001
Reviewed-by: AnErrupTion <anerruption+codeberg@disroot.org>
Animations bigger than the rendering area would have an alignment to the
top left instead of center.
## What are the changes about?
Fixes incorrect offset calculations for dur movies bigger than the screen.
## What existing issue does this resolve?
N/A
## Pre-requisites
- [x] I have tested & confirmed the changes work locally
- [x] I have run `zig fmt` throughout my changes
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/966
Reviewed-by: AnErrupTion <anerruption+codeberg@disroot.org>
Signed-off-by: AnErrupTion <anerruption@disroot.org>
## What are the changes about?
Ports the code base to Zig 0.16.0.
## What existing issue does this resolve?
N/A
## Pre-requisites
- [x] I have tested & confirmed the changes work locally
- [x] I have run `zig fmt` throughout my changes
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/962
## What are the changes about?
Add support for letting a user use a negative offset (#880), alignment, and logo. Below is example of the logo file, I hope it is what was request :). It has no padding so a user can move the alignment and offset to get it how they want on screen.
This technically is good to go, except I didn't upload the logo file as I'm not sure where to add the animation file to get it to here: $CONFIG_DIRECTORY/ly/example.dur
## What existing issue does this resolve?
#880
## Pre-requisites
- [x] I have tested & confirmed the changes work locally
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/893
Reviewed-by: AnErrupTion <anerruption@disroot.org>
Co-authored-by: hynak <hynak@noreply.codeberg.org>
Co-committed-by: hynak <hynak@noreply.codeberg.org>
## What are the changes about?
buf_height is declared at the start of the draw() function of the
Matrix animation but both buf_height and self.terminal_buffer.height are
used in the function. replace every occurence of
self.terminal_buffer.height by buf_height for consistency.
The same goes for buf_width and self.terminal_buffer.width.
no functionnal changes
## What existing issue does this resolve?
N/A
## Pre-requisites
- [x] I have tested & confirmed the changes work locally
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/903
Reviewed-by: AnErrupTion <anerruption@disroot.org>
Co-authored-by: Theo Gaige <theo.gaige@free.fr>
Co-committed-by: Theo Gaige <theo.gaige@free.fr>
RadsammyT
AnErrupTion
Titanium Brain
hynak
Theo Gaige
Matthew Rothlisberger
thoxy
thoxy
AnErrupTion
winlith