feat: Add page for third-party train schedule libraries (#16)

Author: tizu69

.vitepress/sidebars/users.ts

@@ -48,6 +48,10 @@ export default {
                   text: "Train schedule",
                   link: "/users/cc-tweaked-integration/train/train-schedule",
                 },
+                {
+                  text: "Libraries",
+                  link: "/users/cc-tweaked-integration/train/libraries",
+                },
               ],
             },
             {

src/users/cc-tweaked-integration/train/libraries.md

@@ -0,0 +1,83 @@
+Community-written libraries exist for interacting with schedules. These are not
+made by or affiliated with the Create team. The ones below stem from the
+[Minecraft Computer Mods Discord Server](https://discord.computercraft.cc/), and
+can be used to contact the developers!
+
+## trainlib
+
+A pseudo-OOP library for building train schedules.
+
+In this example, we will assign a schedule to drive to Station 1, then wait for
+a player (or more) to mount, after which it will drive to Station 2 and wait for
+them to dismount.
+
+```lua
+local tl = require("trainlib")
+
+local schedule = tl.schedule(true) -- cyclic / looping!
+local conditions = tl.condition_set_or():addCondition(tl.conditions.player_count(1, false))
+local conditions_destination = tl.condition_set_or():addCondition(tl.conditions.player_count(0, true))
+
+schedule
+    :addEntry(tl.entry(tl.instructions.destination("Station 1"), conditions))
+    :addEntry(tl.entry(tl.instructions.destination("Station 2"), conditions_destination))
+
+station.setSchedule(schedule)
+```
+
+[Download](https://github.com/scmcgowen/trainlib) (MIT license) •
+[View in Discord](https://canary.discord.com/channels/477910221872824320/1292217740416778240/1292217740416778240)
+
+## Scheduler
+
+A minimalistic "it just works" library for magically building train schedules.
+Also supports Steam 'n' Rails, Crafts & Additions, and Railways Navigator, and
+is easily extensible. Full LuaLS documentation is included in the library.
+
+In this example, we will assign a schedule to drive to Station 1, then wait for
+5 seconds, and then wait for the station to be powered, or until the time hits
+14:00 (every day), then drive to Station 2 and wait for a second.
+
+```lua
+local Scheduler = require("scheduler")
+
+local schedule = Scheduler.new(true) -- cyclic / looping!
+    :to("Station 1")
+        :wait(5):powered()
+        :OR():time(14, 0, "daily")
+    :to("Station 2")
+        :wait(1)
+
+station.setSchedule(schedule)
+```
+
+[Download](https://github.com/tizu69/cclibs/tree/main/scheduler) (MIT license) •
+[View in Discord](https://canary.discord.com/channels/477910221872824320/1299066980581773353/1299066980581773353)
+
+## Create Scheduler / DSL for Create Train Schedules
+
+A domain-specific language for writing schedules.
+
+In this example, we will assign a schedule to drive to Station 1, then wait 5
+minutes, and then wait for the station to be powered, or until the time hits
+14:00, then drive to Station 2 and wait for a minute, use this DSL code:
+
+```scheduler
+cyclic
+to "Station 1" {
+  wait 5m, powered
+  time = 14:00 daily
+}
+to "Station 2" { wait 1m }
+```
+
+Then, turn it into a schedule like so:
+
+```lua
+local mksched = require "create-scheduler"
+local schedule = mksched("cyclic to ...")
+station.setSchedule(schedule)
+```
+
+[Download](https://gist.github.com/MCJack123/94071c7724045dc048777395afc04eb1) (CC0 license) •
+[View in Discord](https://discord.com/channels/477910221872824320/1299074371540746310/1299074371540746310)

src/users/cc-tweaked-integration/train/train-schedule.md

@@ -43,6 +43,9 @@ schedule = {
 }
 ```
 
+If this seems a bit confusing, you may also check out some community-made
+[libraries](./libraries) for creating schedules.
+
 ---
 
 ## Instructions