fix: Renames WeightOverloading to StaminaSystem (#1495)

Projects/UOContent/Misc/StaminaSystem.cs

@@ -0,0 +1,125 @@
+using System;
+using Server.Mobiles;
+using Server.Spells.Ninjitsu;
+
+namespace Server.Misc;
+
+public enum DFAlgorithm
+{
+    Standard,
+    PainSpike
+}
+
+public static class StaminaSystem
+{
+    public const int OverloadAllowance = 4; // We can be four stones overweight without getting fatigued
+
+    public static DFAlgorithm DFA { get; set; }
+
+    public static void Initialize()
+    {
+        EventSink.Movement += EventSink_Movement;
+    }
+
+    public static void FatigueOnDamage(Mobile m, int damage)
+    {
+        var fatigue = DFA switch
+        {
+            DFAlgorithm.Standard  => damage * (100.0 / m.Hits) * ((double)m.Stam / 100) - 5.0,
+            DFAlgorithm.PainSpike => damage * (100.0 / m.Hits + (50.0 + m.Stam) / 100 - 1.0) - 5.0,
+            _                     => 0.0
+        };
+
+        if (fatigue > 0)
+        {
+            m.Stam -= (int)fatigue;
+        }
+    }
+
+    public static int GetMaxWeight(Mobile m) => m.MaxWeight;
+
+    public static void EventSink_Movement(MovementEventArgs e)
+    {
+        var from = e.Mobile;
+
+        if (!from.Alive || from.AccessLevel > AccessLevel.Player)
+        {
+            return;
+        }
+
+        if (!from.Player)
+        {
+            // Else it won't work on monsters.
+            DeathStrike.AddStep(from);
+            return;
+        }
+
+        var maxWeight = GetMaxWeight(from) + OverloadAllowance;
+        var overWeight = Mobile.BodyWeight + from.TotalWeight - maxWeight;
+
+        if (overWeight > 0)
+        {
+            from.Stam -= GetStamLoss(from, overWeight, (e.Direction & Direction.Running) != 0);
+
+            if (from.Stam == 0)
+            {
+                from.SendLocalizedMessage(
+                    500109
+                ); // You are too fatigued to move, because you are carrying too much weight!
+                e.Blocked = true;
+                return;
+            }
+        }
+
+        if (from.Stam * 100 / Math.Max(from.StamMax, 1) < 10)
+        {
+            --from.Stam;
+        }
+
+        if (!Core.AOS && from.Stam == 0)
+        {
+            from.SendLocalizedMessage(500110); // You are too fatigued to move.
+            e.Blocked = true;
+            return;
+        }
+
+        if (from is PlayerMobile pm)
+        {
+            var amt = pm.Mounted ? 48 : 16;
+
+            if (++pm.StepsTaken % amt == 0)
+            {
+                --pm.Stam;
+            }
+        }
+
+        DeathStrike.AddStep(from);
+    }
+
+    public static int GetStamLoss(Mobile from, int overWeight, bool running)
+    {
+        var loss = 5 + overWeight / 25;
+
+        if (from.Mounted)
+        {
+            loss /= 3;
+        }
+
+        if (running)
+        {
+            loss *= 2;
+        }
+
+        return loss;
+    }
+
+    public static bool IsOverloaded(Mobile m)
+    {
+        if (!m.Player || !m.Alive || m.AccessLevel > AccessLevel.Player)
+        {
+            return false;
+        }
+
+        return Mobile.BodyWeight + m.TotalWeight > GetMaxWeight(m) + OverloadAllowance;
+    }
+}