feat: Adding base game All players spawned event for exiled (#558)

* Add RoleAssigner.OnPlayersSpawned

* Add Handler

Author: MS-crew

EXILED/Exiled.Events/Events.cs

@@ -73,6 +73,7 @@ public override void OnEnabled()
             Handlers.Map.ChangedIntoGrenade += Handlers.Internal.ExplodingGrenade.OnChangedIntoGrenade;
 
             CharacterClassManager.OnRoundStarted += Handlers.Server.OnRoundStarted;
+            RoleAssigner.OnPlayersSpawned += Handlers.Server.OnAllPlayersSpawned;
             WaveManager.OnWaveSpawned += Handlers.Server.OnRespawnedTeam;
             InventorySystem.InventoryExtensions.OnItemAdded += Handlers.Player.OnItemAdded;
             InventorySystem.InventoryExtensions.OnItemRemoved += Handlers.Player.OnItemRemoved;
@@ -113,6 +114,7 @@ public override void OnDisabled()
 
             InventorySystem.InventoryExtensions.OnItemAdded -= Handlers.Player.OnItemAdded;
             InventorySystem.InventoryExtensions.OnItemRemoved -= Handlers.Player.OnItemRemoved;
+            RoleAssigner.OnPlayersSpawned -= Handlers.Server.OnAllPlayersSpawned;
             WaveManager.OnWaveSpawned -= Handlers.Server.OnRespawnedTeam;
             RagdollManager.OnRagdollSpawned -= Handlers.Internal.RagdollList.OnSpawnedRagdoll;
             RagdollManager.OnRagdollRemoved -= Handlers.Internal.RagdollList.OnRemovedRagdoll;
@@ -161,4 +163,4 @@ public void Unpatch()
             Log.Debug("All events have been unpatched complete. Goodbye!");
         }
     }
-}
+}

EXILED/Exiled.Events/Handlers/Server.cs

@@ -32,6 +32,11 @@ public static class Server
         /// </summary>
         public static Event RoundStarted { get; set; } = new();
 
+        /// <summary>
+        /// Invoked after all players have spawned at the start of a new round.
+        /// </summary>
+        public static Event AllPlayersSpawned { get; set; } = new();
+
         /// <summary>
         /// Invoked before ending a round.
         /// </summary>
@@ -137,6 +142,11 @@ public static class Server
         /// </summary>
         public static void OnRoundStarted() => RoundStarted.InvokeSafely();
 
+        /// <summary>
+        /// Called after all players have spawned at the start of a new round.
+        /// </summary>
+        public static void OnAllPlayersSpawned() => AllPlayersSpawned.InvokeSafely();
+
         /// <summary>
         /// Called before ending a round.
         /// </summary>
@@ -245,4 +255,4 @@ public static class Server
         /// <param name="ev">The <see cref="CompletingObjectiveEventArgs"/> instance.</param>
         public static void OnCompletingObjective(CompletingObjectiveEventArgs ev) => CompletingObjective.InvokeSafely(ev);
     }
-}
+}