From 148c45666aa415f1f284afb9c4adafab4118455a Mon Sep 17 00:00:00 2001
From: Dev <dev@dev.sp-tarkov.com>
Date: Mon, 21 Oct 2024 14:23:41 +0100
Subject: [PATCH] Fixed bosses not spawning when player chooses `medium` ai
 amount on pre-raid screen

---
 ...BossesHavingNoFollowersOnMediumAiAmount.cs | 50 +++++++++++++++++++
 project/SPT.Custom/SPTCustomPlugin.cs         |  1 +
 2 files changed, 51 insertions(+)
 create mode 100644 project/SPT.Custom/Patches/FixBossesHavingNoFollowersOnMediumAiAmount.cs

diff --git a/project/SPT.Custom/Patches/FixBossesHavingNoFollowersOnMediumAiAmount.cs b/project/SPT.Custom/Patches/FixBossesHavingNoFollowersOnMediumAiAmount.cs
new file mode 100644
index 0000000..37117ba
--- /dev/null
+++ b/project/SPT.Custom/Patches/FixBossesHavingNoFollowersOnMediumAiAmount.cs
@@ -0,0 +1,50 @@
+using SPT.Reflection.Patching;
+using System.Reflection;
+using EFT;
+using EFT.Bots;
+using HarmonyLib;
+
+namespace SPT.Custom.Patches
+{
+    /// <summary>
+    /// Fix bosses not spawning with any followers because BSG subtract the escort amount from itself
+    /// </summary>
+    public class FixBossesHavingNoFollowersOnMediumAiAmount: ModulePatch
+    {
+        protected override MethodBase GetTargetMethod()
+        {
+            return AccessTools.Method(typeof(LocalGame), nameof(LocalGame.smethod_8));
+        }
+
+        [PatchPrefix]
+        public static void PatchPrefix(LocalGame __instance, WavesSettings wavesSettings, ref BossLocationSpawn[] bossLocationSpawn)
+        {
+            // Not a boss and set to medium, skip
+            if (wavesSettings is not { IsBosses: true, BotAmount: EBotAmount.Medium })
+            {
+                return;
+            }
+
+            foreach (var locationSpawn in bossLocationSpawn)
+            {
+                // Only adjust bosses with single escort amount value, skip others
+                if (locationSpawn.BossEscortAmount.Length != 1)
+                {
+                    continue;
+                }
+
+                // Only add new value when existing value is > 0
+                var existingAmount = int.Parse(locationSpawn.BossEscortAmount);
+                if (existingAmount == 0)
+                {
+                    // Don't add more data to boss with 0 followers
+                    continue;
+                }
+
+                // Add second value to property, when client does (max - min / 2), it won't be 0
+                // e.g. reshala has value of "4", we add value "(existing)*3 (=12)", which means the client does "(12 - 4) / 2" giving us 4 escorts - same as high/as online ai amount
+                locationSpawn.BossEscortAmount += $",{existingAmount * 3}";
+            }
+        }
+    }
+}
diff --git a/project/SPT.Custom/SPTCustomPlugin.cs b/project/SPT.Custom/SPTCustomPlugin.cs
index 7eda07e..b2c81df 100644
--- a/project/SPT.Custom/SPTCustomPlugin.cs
+++ b/project/SPT.Custom/SPTCustomPlugin.cs
@@ -38,6 +38,7 @@ namespace SPT.Custom
                 new FixScavWarNullErrorWithMarkOfUnknownPatch().Enable();
 				new MergeScavPmcQuestsOnInventoryLoadPatch().Enable();
                 new CopyPmcQuestsToPlayerScavPatch().Enable();
+                new FixBossesHavingNoFollowersOnMediumAiAmount().Enable();
                 //new AllowAirdropsInPvEPatch().Enable();
 
 				HookObject.AddOrGetComponent<MenuNotificationManager>();