Reorganizes Project (#41)

Projects/Scripts/Spells/Necromancy/CorpseSkin.cs

@@ -0,0 +1,131 @@
+using System;
+using System.Collections.Generic;
+using Server.Targeting;
+
+namespace Server.Spells.Necromancy
+{
+  public class CorpseSkinSpell : NecromancerSpell, ISpellTargetingMobile
+  {
+    private static SpellInfo m_Info = new SpellInfo(
+      "Corpse Skin", "In Agle Corp Ylem",
+      203,
+      9051,
+      Reagent.BatWing,
+      Reagent.GraveDust
+    );
+
+    private static Dictionary<Mobile, ExpireTimer> m_Table = new Dictionary<Mobile, ExpireTimer>();
+
+    public CorpseSkinSpell(Mobile caster, Item scroll = null) : base(caster, scroll, m_Info)
+    {
+    }
+
+    public override TimeSpan CastDelayBase => TimeSpan.FromSeconds(1.5);
+
+    public override double RequiredSkill => 20.0;
+    public override int RequiredMana => 11;
+
+    public override void OnCast()
+    {
+      Caster.Target = new SpellTargetMobile(this, TargetFlags.Harmful, Core.ML ? 10 : 12);
+    }
+
+    public void Target(Mobile m)
+    {
+      if (m == null)
+        return;
+
+      if (CheckHSequence(m))
+      {
+        SpellHelper.Turn(Caster, m);
+
+        /* Transmogrifies the flesh of the target creature or player to resemble rotted corpse flesh,
+         * making them more vulnerable to Fire and Poison damage,
+         * but increasing their resistance to Physical and Cold damage.
+         *
+         * The effect lasts for ((Spirit Speak skill level - target's Resist Magic skill level) / 25 ) + 40 seconds.
+         *
+         * NOTE: Algorithm above is fixed point, should be:
+         * ((ss-mr)/2.5) + 40
+         *
+         * NOTE: Resistance is not checked if targeting yourself
+         */
+
+        if (m_Table.TryGetValue(m, out ExpireTimer timer))
+          timer.DoExpire();
+        else
+          m.SendLocalizedMessage(1061689); // Your skin turns dry and corpselike.
+
+        m.Spell?.OnCasterHurt();
+
+        m.FixedParticles(0x373A, 1, 15, 9913, 67, 7, EffectLayer.Head);
+        m.PlaySound(0x1BB);
+
+        double ss = GetDamageSkill(Caster);
+        double mr = Caster == m ? 0.0 : GetResistSkill(m);
+        m.CheckSkill(SkillName.MagicResist, 0.0, 120.0); //Skill check for gain
+
+        TimeSpan duration = TimeSpan.FromSeconds((ss - mr) / 2.5 + 40.0);
+
+        ResistanceMod[] mods = {
+          new ResistanceMod(ResistanceType.Fire, -15),
+          new ResistanceMod(ResistanceType.Poison, -15),
+          new ResistanceMod(ResistanceType.Cold, +10),
+          new ResistanceMod(ResistanceType.Physical, +10)
+        };
+
+        timer = new ExpireTimer(m, mods, duration);
+        timer.Start();
+
+        BuffInfo.AddBuff(m, new BuffInfo(BuffIcon.CorpseSkin, 1075663, duration, m));
+
+        m_Table[m] = timer;
+
+        for (int i = 0; i < mods.Length; ++i)
+          m.AddResistanceMod(mods[i]);
+
+        HarmfulSpell(m);
+      }
+
+      FinishSequence();
+    }
+
+    public static bool RemoveCurse(Mobile m)
+    {
+      if (!m_Table.TryGetValue(m, out ExpireTimer t))
+        return false;
+
+      m.SendLocalizedMessage(1061688); // Your skin returns to normal.
+      t?.DoExpire();
+      return true;
+    }
+
+    private class ExpireTimer : Timer
+    {
+      private Mobile m_Mobile;
+      private ResistanceMod[] m_Mods;
+
+      public ExpireTimer(Mobile m, ResistanceMod[] mods, TimeSpan delay) : base(delay)
+      {
+        m_Mobile = m;
+        m_Mods = mods;
+      }
+
+      public void DoExpire()
+      {
+        for (int i = 0; i < m_Mods.Length; ++i)
+          m_Mobile.RemoveResistanceMod(m_Mods[i]);
+
+        Stop();
+        BuffInfo.RemoveBuff(m_Mobile, BuffIcon.CorpseSkin);
+        m_Table.Remove(m_Mobile);
+      }
+
+      protected override void OnTick()
+      {
+        m_Mobile.SendLocalizedMessage(1061688); // Your skin returns to normal.
+        DoExpire();
+      }
+    }
+  }
+}