fix dragon spawn location and round end summary (#31890)

* spawn dragon rule at station edge

* 2

* stuff

* fix round end summary not showing

* no invalid euid

Content.Server/Dragon/Components/DragonRuleComponent.cs

@@ -1,7 +0,0 @@
-namespace Content.Server.Dragon;
-
-[RegisterComponent]
-public sealed partial class DragonRuleComponent : Component
-{
-
-}

Content.Server/GameTicking/Rules/Components/DragonRuleComponent.cs

@@ -0,0 +1,4 @@
+namespace Content.Server.GameTicking.Rules.Components;
+
+[RegisterComponent]
+public sealed partial class DragonRuleComponent : Component;

Content.Server/GameTicking/Rules/DragonRuleSystem.cs

@@ -0,0 +1,52 @@
+using Content.Server.Antag;
+using Content.Server.GameTicking.Rules.Components;
+using Content.Server.Station.Components;
+using Content.Server.Station.Systems;
+using Content.Shared.Localizations;
+using Robust.Server.GameObjects;
+
+namespace Content.Server.GameTicking.Rules;
+
+public sealed class DragonRuleSystem : GameRuleSystem<DragonRuleComponent>
+{
+    [Dependency] private readonly TransformSystem _transform = default!;
+    [Dependency] private readonly AntagSelectionSystem _antag = default!;
+    [Dependency] private readonly StationSystem _station = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<DragonRuleComponent, AfterAntagEntitySelectedEvent>(AfterAntagEntitySelected);
+    }
+
+    private void AfterAntagEntitySelected(Entity<DragonRuleComponent> ent, ref AfterAntagEntitySelectedEvent args)
+    {
+        _antag.SendBriefing(args.EntityUid, MakeBriefing(args.EntityUid), null, null);
+    }
+
+    private string MakeBriefing(EntityUid dragon)
+    {
+        var direction = string.Empty;
+
+        var dragonXform = Transform(dragon);
+
+        var station = _station.GetStationInMap(dragonXform.MapID);
+        EntityUid? stationGrid = null;
+        if (TryComp<StationDataComponent>(station, out var stationData))
+            stationGrid = _station.GetLargestGrid(stationData);
+
+        if (stationGrid is not null)
+        {
+            var stationPosition = _transform.GetWorldPosition((EntityUid)stationGrid);
+            var dragonPosition = _transform.GetWorldPosition(dragon);
+
+            var vectorToStation = stationPosition - dragonPosition;
+            direction = ContentLocalizationManager.FormatDirection(vectorToStation.GetDir());
+        }
+
+        var briefing = Loc.GetString("dragon-role-briefing", ("direction", direction));
+
+        return briefing;
+    }
+}

Resources/Locale/en-US/dragon/dragon.ftl

@@ -2,4 +2,4 @@ dragon-round-end-agent-name = dragon
 
 objective-issuer-dragon = [color=#7567b6]Space Dragon[/color]
 
-dragon-role-briefing = Summon 3 carp rifts and take over this quadrant!
+dragon-role-briefing = Summon 3 carp rifts and take over this quadrant! The station is located {$direction}.

Resources/Prototypes/GameRules/events.yml

@@ -157,9 +157,12 @@
     earliestStart: 40
     reoccurrenceDelay: 20
     minimumPlayers: 20
-  - type: AntagRandomSpawn
+    duration: null
+  - type: SpaceSpawnRule
+    spawnDistance: 0
   - type: AntagSpawner
     prototype: MobDragon
+  - type: DragonRule
   - type: AntagObjectives
     objectives:
     - CarpRiftsObjective
@@ -174,8 +177,6 @@
       mindComponents:
       - type: DragonRole
         prototype: Dragon
-      - type: RoleBriefing
-        briefing: dragon-role-briefing
 
 - type: entity
   parent: BaseGameRule