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NitroxPatcher/Patches/Dynamic/Stalker_CheckLoseTooth_Patch.cs

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+using System.Reflection;
+using NitroxClient.GameLogic;
+using NitroxModel.DataStructures;
+using NitroxModel.Helper;
+using UnityEngine;
+
+namespace NitroxPatcher.Patches.Dynamic;
+
+public sealed partial class Stalker_CheckLoseTooth_Patch : NitroxPatch, IDynamicPatch
+{
+    private static readonly MethodInfo TARGET_METHOD = Reflect.Method((Stalker t) => t.CheckLoseTooth(default(GameObject)));
+
+    // HardnessMixin seems to be a bit buggy (ie: undefined values for some scraps, which is a vanilla bug), so we'll just hard-code the values for now.
+    // Note that HardnessMixin is only used by Stalkers
+    public static bool Prefix(Stalker __instance, GameObject target)
+    {
+        if (!__instance.TryGetNitroxId(out NitroxId creatureId)
+            && !Resolve<SimulationOwnership>().HasAnyLockType(creatureId))
+        {
+            return false;
+        }
+
+
+        TechType techType = CraftData.GetTechType(target);
+
+        float dropProbability = techType switch
+        {
+            TechType.ScrapMetal => 0.25f, // https://subnautica.fandom.com/wiki/Metal_Salvage_(Subnautica)
+            TechType.MapRoomCamera => 0.25f,
+            TechType.Titanium or TechType.Silver or TechType.Gold or TechType.Kyanite or TechType.Copper or TechType.Nickel => 0.15f,
+            _ => 0f,
+        };
+
+        if (dropProbability == 0)
+        {
+            return false;
+        }
+
+        // Random.value returns a random float within[0.0..1.0] (range is inclusive)
+        if (Random.value < dropProbability && Random.value < 0.5f)
+        {
+            // Code from Stalker.LoseTooth() to avoid having another patch
+
+            GameObject toothGameObject = Object.Instantiate(__instance.toothPrefab);
+            toothGameObject.transform.position = __instance.loseToothDropLocation.transform.position;
+            toothGameObject.transform.rotation = __instance.loseToothDropLocation.transform.rotation;
+
+            if (toothGameObject.activeSelf && __instance.isActiveAndEnabled)
+            {
+                foreach (Collider collider in toothGameObject.GetComponentsInChildren<Collider>())
+                {
+                    Physics.IgnoreCollision(__instance.stalkerBodyCollider, collider);
+                }
+            }
+
+            Utils.PlayFMODAsset(__instance.loseToothSound, toothGameObject.transform, 20f);
+            LargeWorldEntity.Register(toothGameObject);
+
+            Resolve<Items>().Dropped(toothGameObject);
+        }
+
+        return false;
+    }
+}