From 3333a5ef4fa4d14257ac49be583347a54a51baf1 Mon Sep 17 00:00:00 2001
From: Yamato <66829532+louis1706@users.noreply.github.com>
Date: Mon, 20 Jan 2025 00:24:12 +0100
Subject: [PATCH] feat: PR 133 / Added Scp079 Signal Event (#400)

Squashed PR 133:
---
 .../EventArgs/Scp079/LosingSignalEventArgs.cs | 44 ++++++++++
 .../EventArgs/Scp079/LostSignalEventArgs.cs   | 38 ++++++++
 .../Scp079/StartingSpeakerEventArgs.cs        | 66 --------------
 .../Scp079/StoppingSpeakerEventArgs.cs        | 57 ------------
 EXILED/Exiled.Events/Handlers/Scp079.cs       | 22 +++++
 .../Patches/Events/Scp079/Lost.cs             | 86 +++++++++++++++++++
 6 files changed, 190 insertions(+), 123 deletions(-)
 create mode 100644 EXILED/Exiled.Events/EventArgs/Scp079/LosingSignalEventArgs.cs
 create mode 100644 EXILED/Exiled.Events/EventArgs/Scp079/LostSignalEventArgs.cs
 create mode 100644 EXILED/Exiled.Events/Patches/Events/Scp079/Lost.cs

diff --git a/EXILED/Exiled.Events/EventArgs/Scp079/LosingSignalEventArgs.cs b/EXILED/Exiled.Events/EventArgs/Scp079/LosingSignalEventArgs.cs
new file mode 100644
index 000000000..cae1c775e
--- /dev/null
+++ b/EXILED/Exiled.Events/EventArgs/Scp079/LosingSignalEventArgs.cs
@@ -0,0 +1,44 @@
+// -----------------------------------------------------------------------
+// <copyright file="LosingSignalEventArgs.cs" company="ExMod Team">
+// Copyright (c) ExMod Team. All rights reserved.
+// Licensed under the CC BY-SA 3.0 license.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Exiled.Events.EventArgs.Scp079
+{
+    using Exiled.API.Features;
+    using Exiled.Events.EventArgs.Interfaces;
+
+    /// <summary>
+    /// Contains all information before SCP-079 loses a signal by SCP-2176.
+    /// </summary>
+    public class LosingSignalEventArgs : IScp079Event, IDeniableEvent
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LosingSignalEventArgs" /> class.
+        /// </summary>
+        /// <param name="player">
+        /// <inheritdoc cref="Player" />
+        /// </param>
+        public LosingSignalEventArgs(ReferenceHub player)
+        {
+            Player = Player.Get(player);
+            Scp079 = Player.Role.As<API.Features.Roles.Scp079Role>();
+            IsAllowed = true;
+        }
+
+        /// <summary>
+        /// Gets the player who's controlling SCP-079.
+        /// </summary>
+        public Player Player { get; }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether or not SCP-079 will lose his signal.
+        /// </summary>
+        public bool IsAllowed { get; set; }
+
+        /// <inheritdoc/>
+        public API.Features.Roles.Scp079Role Scp079 { get; }
+    }
+}
diff --git a/EXILED/Exiled.Events/EventArgs/Scp079/LostSignalEventArgs.cs b/EXILED/Exiled.Events/EventArgs/Scp079/LostSignalEventArgs.cs
new file mode 100644
index 000000000..247eb5c20
--- /dev/null
+++ b/EXILED/Exiled.Events/EventArgs/Scp079/LostSignalEventArgs.cs
@@ -0,0 +1,38 @@
+// -----------------------------------------------------------------------
+// <copyright file="LostSignalEventArgs.cs" company="ExMod Team">
+// Copyright (c) ExMod Team. All rights reserved.
+// Licensed under the CC BY-SA 3.0 license.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Exiled.Events.EventArgs.Scp079
+{
+    using Exiled.API.Features;
+    using Exiled.Events.EventArgs.Interfaces;
+
+    /// <summary>
+    /// Contains all information before SCP-079 loses a signal by SCP-2176.
+    /// </summary>
+    public class LostSignalEventArgs : IScp079Event
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LostSignalEventArgs" /> class.
+        /// </summary>
+        /// <param name="player">
+        /// <inheritdoc cref="Player" />
+        /// </param>
+        public LostSignalEventArgs(ReferenceHub player)
+        {
+            Player = Player.Get(player);
+            Scp079 = Player.Role.As<API.Features.Roles.Scp079Role>();
+        }
+
+        /// <summary>
+        /// Gets the player who's controlling SCP-079.
+        /// </summary>
+        public Player Player { get; }
+
+        /// <inheritdoc/>
+        public API.Features.Roles.Scp079Role Scp079 { get; }
+    }
+}
diff --git a/EXILED/Exiled.Events/EventArgs/Scp079/StartingSpeakerEventArgs.cs b/EXILED/Exiled.Events/EventArgs/Scp079/StartingSpeakerEventArgs.cs
index fe160a28a..e69de29bb 100644
--- a/EXILED/Exiled.Events/EventArgs/Scp079/StartingSpeakerEventArgs.cs
+++ b/EXILED/Exiled.Events/EventArgs/Scp079/StartingSpeakerEventArgs.cs
@@ -1,66 +0,0 @@
-// -----------------------------------------------------------------------
-// <copyright file="StartingSpeakerEventArgs.cs" company="ExMod Team">
-// Copyright (c) ExMod Team. All rights reserved.
-// Licensed under the CC BY-SA 3.0 license.
-// </copyright>
-// -----------------------------------------------------------------------
-
-namespace Exiled.Events.EventArgs.Scp079
-{
-    using Exiled.API.Features;
-    using Exiled.API.Features.Roles;
-    using Exiled.Events.EventArgs.Interfaces;
-
-    /// <summary>
-    /// Contains all information before SCP-079 uses a speaker.
-    /// </summary>
-    public class StartingSpeakerEventArgs : IScp079Event, IDeniableEvent
-    {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="StartingSpeakerEventArgs" /> class.
-        /// </summary>
-        /// <param name="player">
-        /// <inheritdoc cref="Player" />
-        /// </param>
-        /// <param name="room">
-        /// <inheritdoc cref="Room" />
-        /// </param>
-        /// <param name="auxiliaryPowerCost">
-        /// <inheritdoc cref="AuxiliaryPowerCost" />
-        /// </param>
-        /// <param name="isAllowed">
-        /// <inheritdoc cref="IsAllowed" />
-        /// </param>
-        public StartingSpeakerEventArgs(Player player, Room room, float auxiliaryPowerCost, bool isAllowed = true)
-        {
-            Player = player;
-            Scp079 = player.Role.As<Scp079Role>();
-            Room = room;
-            AuxiliaryPowerCost = auxiliaryPowerCost;
-            IsAllowed = isAllowed;
-        }
-
-        /// <summary>
-        /// Gets the player who's controlling SCP-079.
-        /// </summary>
-        public Player Player { get; }
-
-        /// <inheritdoc/>
-        public Scp079Role Scp079 { get; }
-
-        /// <summary>
-        /// Gets the room that the speaker is located in.
-        /// </summary>
-        public Room Room { get; }
-
-        /// <summary>
-        /// Gets or sets the amount of auxiliary power required to use a speaker through SCP-079.
-        /// </summary>
-        public float AuxiliaryPowerCost { get; set; }
-
-        /// <summary>
-        /// Gets or sets a value indicating whether SCP-079 can use the speaker.
-        /// </summary>
-        public bool IsAllowed { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/EXILED/Exiled.Events/EventArgs/Scp079/StoppingSpeakerEventArgs.cs b/EXILED/Exiled.Events/EventArgs/Scp079/StoppingSpeakerEventArgs.cs
index 9191c4cc0..e69de29bb 100644
--- a/EXILED/Exiled.Events/EventArgs/Scp079/StoppingSpeakerEventArgs.cs
+++ b/EXILED/Exiled.Events/EventArgs/Scp079/StoppingSpeakerEventArgs.cs
@@ -1,57 +0,0 @@
-// -----------------------------------------------------------------------
-// <copyright file="StoppingSpeakerEventArgs.cs" company="ExMod Team">
-// Copyright (c) ExMod Team. All rights reserved.
-// Licensed under the CC BY-SA 3.0 license.
-// </copyright>
-// -----------------------------------------------------------------------
-
-namespace Exiled.Events.EventArgs.Scp079
-{
-    using Exiled.API.Features;
-    using Exiled.API.Features.Roles;
-    using Exiled.Events.EventArgs.Interfaces;
-
-    /// <summary>
-    /// Contains all information before SCP-079 finishes using a speaker.
-    /// </summary>
-    public class StoppingSpeakerEventArgs : IScp079Event, IDeniableEvent
-    {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="StoppingSpeakerEventArgs" /> class.
-        /// </summary>
-        /// <param name="player">
-        /// <inheritdoc cref="Player" />
-        /// </param>
-        /// <param name="room">
-        /// <inheritdoc cref="Room" />
-        /// </param>
-        /// <param name="isAllowed">
-        /// <inheritdoc cref="IsAllowed" />
-        /// </param>
-        public StoppingSpeakerEventArgs(Player player, Room room, bool isAllowed = true)
-        {
-            Player = player;
-            Scp079 = player.Role.As<Scp079Role>();
-            Room = room;
-            IsAllowed = isAllowed;
-        }
-
-        /// <summary>
-        /// Gets the player who's controlling SCP-079.
-        /// </summary>
-        public Player Player { get; }
-
-        /// <inheritdoc/>
-        public Scp079Role Scp079 { get; }
-
-        /// <summary>
-        /// Gets the room that the speaker is located in.
-        /// </summary>
-        public Room Room { get; }
-
-        /// <summary>
-        /// Gets or sets a value indicating whether SCP-079 can stop using the speaker.
-        /// </summary>
-        public bool IsAllowed { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/EXILED/Exiled.Events/Handlers/Scp079.cs b/EXILED/Exiled.Events/Handlers/Scp079.cs
index dab2d32c9..a43016314 100644
--- a/EXILED/Exiled.Events/Handlers/Scp079.cs
+++ b/EXILED/Exiled.Events/Handlers/Scp079.cs
@@ -82,6 +82,16 @@ public static class Scp079
         /// </summary>
         public static Event<ZoneBlackoutEventArgs> ZoneBlackout { get; set; } = new();
 
+        /// <summary>
+        /// Invoked before SCP-079 loses a signal by SCP-2176.
+        /// </summary>
+        public static Event<LosingSignalEventArgs> LosingSignal { get; set; } = new();
+
+        /// <summary>
+        /// Invoked after SCP-079 loses a signal by SCP-2176.
+        /// </summary>
+        public static Event<LostSignalEventArgs> LostSignal { get; set; } = new();
+
         /// <summary>
         /// Called before SCP-079 switches cameras.
         /// </summary>
@@ -159,5 +169,17 @@ public static class Scp079
         /// </summary>
         /// <param name="ev">The <see cref="PingingEventArgs" /> instance.</param>
         public static void OnZoneBlackout(ZoneBlackoutEventArgs ev) => ZoneBlackout.InvokeSafely(ev);
+
+        /// <summary>
+        /// Called before SCP-079 loses a signal by SCP-2176.
+        /// </summary>
+        /// <param name="ev">The <see cref="LosingSignalEventArgs" /> instance.</param>
+        public static void OnLosingSignal(LosingSignalEventArgs ev) => LosingSignal.InvokeSafely(ev);
+
+        /// <summary>
+        /// Called after SCP-079 loses a signal by SCP-2176.
+        /// </summary>
+        /// <param name="ev">The <see cref="LostSignalEventArgs" /> instance.</param>
+        public static void OnLostSignal(LostSignalEventArgs ev) => LostSignal.InvokeSafely(ev);
     }
 }
\ No newline at end of file
diff --git a/EXILED/Exiled.Events/Patches/Events/Scp079/Lost.cs b/EXILED/Exiled.Events/Patches/Events/Scp079/Lost.cs
new file mode 100644
index 000000000..4583f447f
--- /dev/null
+++ b/EXILED/Exiled.Events/Patches/Events/Scp079/Lost.cs
@@ -0,0 +1,86 @@
+// -----------------------------------------------------------------------
+// <copyright file="Lost.cs" company="ExMod Team">
+// Copyright (c) ExMod Team. All rights reserved.
+// Licensed under the CC BY-SA 3.0 license.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Exiled.Events.Patches.Events.Scp079
+{
+    using System.Collections.Generic;
+    using System.Reflection.Emit;
+
+    using API.Features.Pools;
+    using Exiled.Events.Attributes;
+    using Exiled.Events.EventArgs.Scp079;
+    using Exiled.Events.Handlers;
+
+    using HarmonyLib;
+
+    using PlayerRoles;
+    using PlayerRoles.PlayableScps.Scp079;
+
+    using static HarmonyLib.AccessTools;
+
+    /// <summary>
+    /// Patches <see cref="Scp079LostSignalHandler.ServerLoseSignal(float)" />.
+    /// Adds the <see cref="Scp079.LosingSignal" /> and <see cref="Scp079.LostSignal"/> event.
+    /// </summary>
+    [EventPatch(typeof(Scp079), nameof(Scp079.LosingSignal))]
+    [EventPatch(typeof(Scp079), nameof(Scp079.LostSignal))]
+    [HarmonyPatch(typeof(Scp079LostSignalHandler), nameof(Scp079LostSignalHandler.ServerLoseSignal))]
+    internal static class Lost
+    {
+        private static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions, ILGenerator generator)
+        {
+            List<CodeInstruction> newInstructions = ListPool<CodeInstruction>.Pool.Get(instructions);
+
+            Label ret = generator.DefineLabel();
+
+            newInstructions.InsertRange(
+                0,
+                new[]
+                {
+                    // Role._lastOwner
+                    new CodeInstruction(OpCodes.Ldarg_0),
+                    new(OpCodes.Callvirt, PropertyGetter(typeof(Scp079LostSignalHandler), nameof(Scp079LostSignalHandler.Role))),
+                    new(OpCodes.Ldfld, Field(typeof(PlayerRoleBase), nameof(PlayerRoleBase._lastOwner))),
+
+                    // LosingSignalEventArgs ev = new(Role._lastOwner)
+                    new(OpCodes.Newobj, GetDeclaredConstructors(typeof(LosingSignalEventArgs))[0]),
+                    new(OpCodes.Dup),
+
+                    // Scp079.OnLosingSignal(ev)
+                    new(OpCodes.Call, Method(typeof(Scp079), nameof(Scp079.OnLosingSignal))),
+
+                    // if (!ev.IsAllowed)
+                    //    return;
+                    new(OpCodes.Callvirt, PropertyGetter(typeof(LosingSignalEventArgs), nameof(LosingSignalEventArgs.IsAllowed))),
+                    new(OpCodes.Brfalse_S, ret),
+                });
+
+            newInstructions.InsertRange(
+                newInstructions.Count - 1,
+                new[]
+                {
+                    // Role._lastOwner
+                    new CodeInstruction(OpCodes.Ldarg_0),
+                    new(OpCodes.Callvirt, PropertyGetter(typeof(Scp079LostSignalHandler), nameof(Scp079LostSignalHandler.Role))),
+                    new(OpCodes.Ldfld, Field(typeof(PlayerRoleBase), nameof(PlayerRoleBase._lastOwner))),
+
+                    // LostSignalEventArgs ev = new(Role._lastOwner)
+                    new(OpCodes.Newobj, GetDeclaredConstructors(typeof(LostSignalEventArgs))[0]),
+
+                    // Scp079.OnLosingSignal(ev)
+                    new(OpCodes.Call, Method(typeof(Scp079), nameof(Scp079.OnLostSignal))),
+                });
+
+            newInstructions[newInstructions.Count - 1].labels.Add(ret);
+
+            for (int z = 0; z < newInstructions.Count; z++)
+                yield return newInstructions[z];
+
+            ListPool<CodeInstruction>.Pool.Return(newInstructions);
+        }
+    }
+}
\ No newline at end of file