Add DayNight Cycle

Content.Server/Shuttles/Systems/ArrivalsSystem.cs

@@ -11,6 +11,7 @@
 using Content.Server.Spawners.Components;
 using Content.Server.Station.Components;
 using Content.Server.Station.Systems;
+using Content.Shared._NC14.DayNightCycle;
 using Content.Shared.Administration;
 using Content.Shared.CCVar;
 using Content.Shared.DeviceNetwork;
@@ -485,6 +486,12 @@ private void SetupArrivalsStation()
                 Range = 32f
             };
             AddComp(mapUid, restricted);
+            var dayNight = new DayNightCycleComponent
+            {
+                CurrentCycleTime = 0.5f,
+                CycleDurationMinutes = 60,
+            };
+            AddComp(mapUid, dayNight);
         }
 
         _mapManager.DoMapInitialize(mapId);

Content.Shared/_NC/DayNightCycle/DayNightCycleComponent.cs

@@ -0,0 +1,50 @@
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared._NC14.DayNightCycle
+{
+    [RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+    public sealed partial class DayNightCycleComponent : Component
+    {
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("cycleDuration")]
+        public float CycleDurationMinutes { get; set; } = 60f; // Default cycle duration is 60 minutes
+
+        [DataField("timeEntries")]
+        public List<TimeEntry> TimeEntries { get; set; } = new()
+        {
+            new() { Time = 0.00f, ColorHex = "#000000" }, // Midnight
+            new() { Time = 0.04f, ColorHex = "#02020b" }, // Very early morning
+            new() { Time = 0.08f, ColorHex = "#312716" }, // Early dawn
+            new() { Time = 0.17f, ColorHex = "#4E3D23" }, // Dawn
+            new() { Time = 0.25f, ColorHex = "#58372D" }, // Sunrise
+            new() { Time = 0.33f, ColorHex = "#876A42" }, // Early morning
+            new() { Time = 0.42f, ColorHex = "#A08042" }, // Mid-morning
+            new() { Time = 0.50f, ColorHex = "#A88F73" }, // Noon
+            new() { Time = 0.58f, ColorHex = "#C1A78A" }, // Early afternoon
+            new() { Time = 0.67f, ColorHex = "#7D6244" }, // Late afternoon
+            new() { Time = 0.75f, ColorHex = "#8C6130" }, // Sunset
+            new() { Time = 0.83f, ColorHex = "#543521" }, // Dusk
+            new() { Time = 0.92f, ColorHex = "#02020b" }, // Early night
+            new() { Time = 1.00f, ColorHex = "#000000" }  // Back to Midnight
+        };
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        [AutoNetworkedField]
+        public int CurrentTimeEntryIndex { get; set; }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        [AutoNetworkedField]
+        public float CurrentCycleTime { get; set; }
+    }
+
+    [DataDefinition, NetSerializable, Serializable]
+    public sealed partial class TimeEntry
+    {
+        [DataField("colorHex")]
+        public string ColorHex { get; set; } = "#FFFFFF";
+
+        [DataField("time")]
+        public float Time { get; set; } // Normalized time (0-1)
+    }
+}

Content.Shared/_NC/DayNightCycle/DayNightCycleSystem.cs

@@ -0,0 +1,117 @@
+using System.Linq;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Timing;
+
+namespace Content.Shared._NC14.DayNightCycle
+{
+    public sealed class DayNightCycleSystem : EntitySystem
+    {
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        private const float EARLY_MORNING_TIME = 0.2f; // This represents 20% into the cycle, which is early morning
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            SubscribeLocalEvent<DayNightCycleComponent, MapInitEvent>(OnMapInit);
+            SubscribeLocalEvent<DayNightCycleComponent, ComponentStartup>(OnComponentStartup);
+        }
+
+        private void OnMapInit(EntityUid uid, DayNightCycleComponent component, MapInitEvent args)
+        {
+            if (component.TimeEntries.Count < 2)
+            {
+                // Default Fallout-inspired color cycle with more variants
+                component.TimeEntries = new List<TimeEntry>
+                {
+                    new() { Time = 0.00f, ColorHex = "#000000" }, // Midnight
+                    new() { Time = 0.04f, ColorHex = "#02020b" }, // Very early morning
+                    new() { Time = 0.08f, ColorHex = "#312716" }, // Early dawn
+                    new() { Time = 0.17f, ColorHex = "#4E3D23" }, // Dawn
+                    new() { Time = 0.25f, ColorHex = "#58372D" }, // Sunrise
+                    new() { Time = 0.33f, ColorHex = "#876A42" }, // Early morning
+                    new() { Time = 0.42f, ColorHex = "#A08042" }, // Mid-morning
+                    new() { Time = 0.50f, ColorHex = "#A88F73" }, // Noon
+                    new() { Time = 0.58f, ColorHex = "#C1A78A" }, // Early afternoon
+                    new() { Time = 0.67f, ColorHex = "#7D6244" }, // Late afternoon
+                    new() { Time = 0.75f, ColorHex = "#8C6130" }, // Sunset
+                    new() { Time = 0.83f, ColorHex = "#543521" }, // Dusk
+                    new() { Time = 0.92f, ColorHex = "#02020b" }, // Early night
+                    new() { Time = 1.00f, ColorHex = "#000000" }  // Back to Midnight
+                };
+            }
+
+            InitializeEarlyMorning(component);
+        }
+
+        private void OnComponentStartup(EntityUid uid, DayNightCycleComponent component, ComponentStartup args)
+        {
+            InitializeEarlyMorning(component);
+        }
+
+        private void InitializeEarlyMorning(DayNightCycleComponent component)
+        {
+            component.CurrentCycleTime = EARLY_MORNING_TIME;
+            UpdateLightColor(component);
+        }
+
+        public override void Update(float frameTime)
+        {
+            base.Update(frameTime);
+
+            var query = EntityQueryEnumerator<DayNightCycleComponent, MapLightComponent>();
+            while (query.MoveNext(out var uid, out var dayNight, out var mapLight))
+            {
+                dayNight.CurrentCycleTime += frameTime / (dayNight.CycleDurationMinutes * 60f);
+                dayNight.CurrentCycleTime %= 1f; // Keep it between 0 and 1
+
+                UpdateLightColor(dayNight, mapLight, uid);
+            }
+        }
+
+        private void UpdateLightColor(DayNightCycleComponent dayNight, MapLightComponent? mapLight = null, EntityUid? uid = null)
+        {
+            var color = GetInterpolatedColor(dayNight);
+
+            if (mapLight != null && uid.HasValue)
+            {
+                mapLight.AmbientLightColor = color;
+                Dirty(uid.Value, mapLight);
+                Dirty(uid.Value, dayNight);
+            }
+        }
+
+        private Color GetInterpolatedColor(DayNightCycleComponent component)
+        {
+            var entries = component.TimeEntries;
+            var time = component.CurrentCycleTime;
+
+            for (int i = 0; i < entries.Count - 1; i++)
+            {
+                if (time >= entries[i].Time && time <= entries[i + 1].Time)
+                {
+                    var t = (time - entries[i].Time) / (entries[i + 1].Time - entries[i].Time);
+                    return InterpolateHexColors(entries[i].ColorHex, entries[i + 1].ColorHex, t);
+                }
+            }
+
+            // If we're here, we're between the last and first entry
+            var lastEntry = entries.Last();
+            var firstEntry = entries.First();
+            var wrappedT = (time - lastEntry.Time) / (1f + firstEntry.Time - lastEntry.Time);
+            return InterpolateHexColors(lastEntry.ColorHex, firstEntry.ColorHex, wrappedT);
+        }
+
+        private Color InterpolateHexColors(string hexColor1, string hexColor2, float t)
+        {
+            Color color1 = Color.FromHex(hexColor1);
+            Color color2 = Color.FromHex(hexColor2);
+
+            float r = color1.R + (color2.R - color1.R) * t;
+            float g = color1.G + (color2.G - color1.G) * t;
+            float b = color1.B + (color2.B - color1.B) * t;
+
+            return new Color(r, g, b);
+        }
+    }
+}

Resources/Maps/glacier.yml

@@ -65,6 +65,9 @@ entities:
   - uid: 1
     components:
     - type: MetaData
+    - type: MapLight
+      ambientLightColor: '#030305FF'
+    - type: DayNightCycle
     - type: Transform
     - type: Map
       mapPaused: True