Nobody expects the Ziguanas (#517)

* Add build.zig, remove makefile, add .idea directory to .gitignore

* Remove submodules, add projects directly

* Remove submodules

* Add projects

* Rename sub/ to dep/, remove makefiles

* Rewrite main.c

* Remove Argoat dependency

* Remove unused dependencies

* Rewrite config.c

* Add files

* Change default fg to 8 in config.ini

* Partially rewrite utils.c

* Use Zig package manager

* Rewrite INPUTS enum in Zig

* Commit unfinished full rewrite (Zig 0.11.0)
What needs to be dealt with:
- Matrix animation
- Authentication part
- Testing on actual TTY (not just virtual console)

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Implement more (untested) authentication code

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Fix some bugs (hopefully)

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Try to fix some more bugs

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Oops, forgot to allocate hehe

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Changes in the Zig rewrite (#596)

* Everything

* make matrix.zig a bit cleaner

* make long lines shorter and add changelog

* vi mode

* update changelog

* get errors from child process and (hopefully) fix some other things

* fix utmp entry

* run authentication in a child process

* update changelog

* small code improvements

* change that

* clear terminal on SIGTERM

* Remove LogFile

* moved ini to a lib, fixed alternative langs

* fix logging out

* oops

* code improvements

* consistency

* clearing the env isn't needed anymore (afaik)

* replace vi_mode with a bool

* type aliases, avoiding zeroes(), breaking a long line

* lowercase insert/normal, merge conditionals, code improvements

* Add experimental save file migrator + bug fixes + add "-dev" version suffix

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Resolve conflicts

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Clean up when SIGTERM is received (#597)

* clean up child processes on SIGTERM

* small code improvement

* consistency.. i guess?

* Properly set XDG_CURRENT_DESKTOP

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Zig 0.12.0 and more! (#599)

* less alloc, update migrator, get DesktopNames from .desktop

* small cleanup

* Update zigini to improve compatibility with old config

* Code improvements

* Update to zig version 0.12.0

* Some fixes

* tiny changes

* remove useless comment

* migrator changes, and small things

* set XDG env vars differently

* free memory on error when appending environments

* Fix out of bounds issue when using the Delete key

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Update zig-ini to fix configuration issue (#603)

* Mention display-manager-init for Gentoo/OpenRC in readme.md

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Tidy up readme.md

Signed-off-by: AnErrupTion <anerruption@disroot.org>

* Fix authentication in a few edge cases (#604)

* fix loginConv and auth

* fix potential mem leak with configs

* BIG changes

---------

Signed-off-by: AnErrupTion <anerruption@disroot.org>
Co-authored-by: アシュ <120780645+Kawaii-Ash@users.noreply.github.com>

src/animations/Doom.zig

@@ -0,0 +1,84 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
+const utils = @import("../tui/utils.zig");
+
+const interop = @import("../interop.zig");
+const termbox = interop.termbox;
+
+const Doom = @This();
+
+pub const STEPS = 13;
+pub const FIRE = [_]termbox.tb_cell{
+    utils.initCell(' ', 9, 0),
+    utils.initCell(0x2591, 2, 0), // Red
+    utils.initCell(0x2592, 2, 0), // Red
+    utils.initCell(0x2593, 2, 0), // Red
+    utils.initCell(0x2588, 2, 0), // Red
+    utils.initCell(0x2591, 4, 2), // Yellow
+    utils.initCell(0x2592, 4, 2), // Yellow
+    utils.initCell(0x2593, 4, 2), // Yellow
+    utils.initCell(0x2588, 4, 2), // Yellow
+    utils.initCell(0x2591, 8, 4), // White
+    utils.initCell(0x2592, 8, 4), // White
+    utils.initCell(0x2593, 8, 4), // White
+    utils.initCell(0x2588, 8, 4), // White
+};
+
+allocator: Allocator,
+terminal_buffer: *TerminalBuffer,
+buffer: []u8,
+
+pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer) !Doom {
+    const buffer = try allocator.alloc(u8, terminal_buffer.width * terminal_buffer.height);
+    initBuffer(buffer, terminal_buffer.width);
+
+    return .{
+        .allocator = allocator,
+        .terminal_buffer = terminal_buffer,
+        .buffer = buffer,
+    };
+}
+
+pub fn deinit(self: Doom) void {
+    self.allocator.free(self.buffer);
+}
+
+pub fn realloc(self: *Doom) !void {
+    const buffer = try self.allocator.realloc(self.buffer, self.terminal_buffer.width * self.terminal_buffer.height);
+    initBuffer(buffer, self.terminal_buffer.width);
+    self.buffer = buffer;
+}
+
+pub fn draw(self: Doom) void {
+    for (0..self.terminal_buffer.width) |x| {
+        for (1..self.terminal_buffer.height) |y| {
+            const source = y * self.terminal_buffer.width + x;
+            const random = (self.terminal_buffer.random.int(u16) % 7) & 3;
+
+            var dest = source - random + 1;
+            if (self.terminal_buffer.width > dest) dest = 0 else dest -= self.terminal_buffer.width;
+
+            const buffer_source = self.buffer[source];
+            const buffer_dest_offset = random & 1;
+
+            if (buffer_source < buffer_dest_offset) continue;
+
+            var buffer_dest = buffer_source - buffer_dest_offset;
+            if (buffer_dest > 12) buffer_dest = 0;
+            self.buffer[dest] = @intCast(buffer_dest);
+
+            self.terminal_buffer.buffer[dest] = FIRE[buffer_dest];
+            self.terminal_buffer.buffer[source] = FIRE[buffer_source];
+        }
+    }
+}
+
+fn initBuffer(buffer: []u8, width: u64) void {
+    const length = buffer.len - width;
+    const slice_start = buffer[0..length];
+    const slice_end = buffer[length..];
+
+    @memset(slice_start, 0);
+    @memset(slice_end, STEPS - 1);
+}