Weather backend start (#407)

* DayCycke StartWithRandomEntry

* add weather rule

* fix

* yep, its work

* finalize weather

* fix again

* weather resprite

Content.Server/_CP14/WeatherControl/CP14WeatherControllerSystem.cs

@@ -0,0 +1,53 @@
+using Content.Server.GameTicking;
+using Content.Server.GameTicking.Events;
+using Content.Server.Weather;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+using Robust.Shared.Timing;
+
+namespace Content.Server._CP14.WeatherControl;
+
+public sealed class CP14WeatherControllerSystem : EntitySystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly IGameTiming _timing = default!;
+    [Dependency] private readonly GameTicker _gameTicker = default!;
+    [Dependency] private readonly WeatherSystem _weather = default!;
+    [Dependency] private readonly IPrototypeManager _proto = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<CP14WeatherControllerComponent, RoundStartingEvent>(OnRoundStart);
+    }
+
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+
+        var query = EntityQueryEnumerator<CP14WeatherControllerComponent>();
+        while (query.MoveNext(out var uid, out var weather))
+        {
+            if (_timing.CurTime <= weather.NextWeatherTime)
+                continue;
+
+            var weatherData = _random.Pick(weather.Entries);
+
+            if (!_proto.TryIndex(weatherData.Visuals, out var weatherVisualsIndexed))
+                continue;
+
+            var weatherDuration = TimeSpan.FromSeconds(weatherData.Duration.Next(_random));
+            _weather.SetWeather(Transform(uid).MapID, weatherVisualsIndexed, _timing.CurTime + weatherDuration);
+
+            var clearDuration = TimeSpan.FromSeconds(weather.ClearDuration.Next(_random));
+            weather.NextWeatherTime = _timing.CurTime + weatherDuration + clearDuration;
+        }
+    }
+
+    private void OnRoundStart(Entity<CP14WeatherControllerComponent> ent, ref RoundStartingEvent args)
+    {
+        ent.Comp.NextWeatherTime = _timing.CurTime + TimeSpan.FromSeconds(ent.Comp.ClearDuration.Next(_random));
+    }
+}
+