9b554f69b0
### Changes/Fixes:
* Adds timer pooling.
* Allows pool to be configurable in ModernUO.json
* Pool replenishes itself asynchronously if depleted.
* Fixes an issue with barkeeps and town criers
* Fixes an issue with incognito buff icons not being removed
* Fixes an issue with polymorph name mod not being removed
* Fixes several places where timers go on forever even after an object is deleted, keeping a reference (memory leak)
* Eliminates the timer for MiningCart altogether.
* Deletes `AcidSlime` since it is a duplicate of `PoolOfAcid`
* Fixes HonorableExecution and standardizes the code for other Bushido moves.
## Changes to the Timer API:
```cs
public class Timer
{
// Creates a timer that will be returned to the pool once execution stops.
public static void StartTimer(Action callback);
public static void StartTimer(TimeSpan delay, Action callback);
public static void StartTimer(TimeSpan delay, TimeSpan interval, Action callback);
public static void StartTimer(TimeSpan interval, int count, Action callback);
public static void StartTimer(TimeSpan delay, TimeSpan interval, int count, Action callback);
// Creates a timer and returns a token for more control. Requires manual cancellation in order for the timer to be returned to the pool.
// If the token is dereferenced, the timer will be dereferenced too. While not returning a timer to the pool is not considered hazardous, it does defeat the purpose of pooled timers.
public static void StartTimer(Action callback, out TimerExecutionToken token);
public static void StartTimer(TimeSpan delay, Action callback, out TimerExecutionToken token);
public static void StartTimer(TimeSpan delay, TimeSpan interval, Action callback, out TimerExecutionToken token);
public static void StartTimer(TimeSpan interval, int count, Action callback, out TimerExecutionToken token);
public static void StartTimer(TimeSpan delay, TimeSpan interval, int count, Action callback, out TimerExecutionToken token);
// If you aren't sure how to use the API above, or you don't care about performance, then you can use the old RunUO Timer.DelayCall
public static DelayCallTimer DelayCall(Action callback);
public static DelayCallTimer DelayCall(TimeSpan delay, Action callback);
public static DelayCallTimer DelayCall(TimeSpan delay, TimeSpan interval, Action callback);
public static DelayCallTimer DelayCall(TimeSpan interval, int count, Action callback);
public static DelayCallTimer DelayCall(TimeSpan delay, TimeSpan interval, int count, Action callback);
}
public struct TimerExecutionToken
{
public bool Running { get; }
public int Index { get; }
public int RemainingCount { get; }
public DateTime Next { get; }
}
```
## When to use `TimerExecutionToken`?
Use tokens when you want to gain the performance benefit of using a pooled timer, but you need one of the following:
* Access to the next time the timer will tick:`token.Next`
* Access to which interval, how many intervals there are, or how many are remaining: `token.Index`, `token.Count`, and `token.RemainingCount`
* Stop a timer manually.
* Determine if the timer is running: `timer.Running`
* See notes below about requirements for using tokens!
## Notes about using the TimerExecutionToken:
When you opt-in to receive a token, you must call `Cancel()` to return the timer. This can be done inside of the callback, or outside of the callback at any time.
If this is not called and your timer is an infinite interval, then you will create a potential memory leak, or null pointer exception in your callback.
If the timer ends and is stopped, but cancel is not called, then the timer will never return to the pool and stay referenced until the token is deleted or cancel is called. (Memory leak)
## Is this thread safe?
No. The ModernUO timer system is not thread safe at all. If you require a thread safe timer system, contact me and I'll help adapt this system. Keep in mind that there is a massive performance hit to make this thread safe when there are literally no use cases for it.
If you need to synchronize execution, meaning you want to execute code from another thread on the core thread. Let's say you have a discord bot that is pushing commands to the game server. Then use `EventLoopContext.Post(SendOrPostCallback callback, object state);`.
401 lines
11 KiB
C#
401 lines
11 KiB
C#
using System;
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using Server.Items;
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using Server.Network;
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namespace Server.Mobiles
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{
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public class PlagueBeastLord : BaseCreature, ICarvable, IScissorable
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{
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private DecayTimer m_Timer;
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[Constructible]
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public PlagueBeastLord() : base(AIType.AI_Melee, FightMode.Closest, 10, 1, 0.2, 0.4)
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{
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Body = 775;
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BaseSoundID = 679;
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SpeechHue = 0x3B2;
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SetStr(500);
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SetDex(100);
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SetInt(30);
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SetHits(1800);
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SetDamage(20, 25);
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SetDamageType(ResistanceType.Physical, 50);
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SetDamageType(ResistanceType.Fire, 25);
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SetDamageType(ResistanceType.Poison, 25);
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SetResistance(ResistanceType.Physical, 45, 55);
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SetResistance(ResistanceType.Fire, 40, 50);
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SetResistance(ResistanceType.Cold, 25, 35);
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SetResistance(ResistanceType.Poison, 75, 85);
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SetResistance(ResistanceType.Energy, 25, 35);
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SetSkill(SkillName.Tactics, 100);
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SetSkill(SkillName.Wrestling, 100);
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Fame = 2000;
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Karma = -2000;
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VirtualArmor = 50;
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}
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public PlagueBeastLord(Serial serial) : base(serial)
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{
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}
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public override string CorpseName => "a plague beast lord corpse";
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public override Poison PoisonImmune => Poison.Lethal;
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[CommandProperty(AccessLevel.GameMaster)]
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public Mobile OpenedBy { get; set; }
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[CommandProperty(AccessLevel.GameMaster)]
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public bool IsBleeding
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{
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get
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{
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var pack = Backpack;
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if (pack != null)
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{
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for (var i = 0; i < pack.Items.Count; i++)
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{
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if (pack.Items[i] is PlagueBeastBlood blood && !blood.Patched)
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{
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return true;
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}
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}
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}
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return false;
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}
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}
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public override string DefaultName => "a plague beast lord";
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public virtual void Carve(Mobile from, Item item)
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{
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if (OpenedBy == null && IsAccessibleTo(from))
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{
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OpenedBy = from;
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m_Timer ??= new DecayTimer(this);
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if (!m_Timer.Running)
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{
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m_Timer.Start();
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}
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m_Timer.StartDissolving();
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var pack = new PlagueBeastBackpack();
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AddItem(pack);
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pack.Initialize();
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foreach (var state in GetClientsInRange(12))
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{
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var m = state.Mobile;
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if (m?.Player == true && m != from)
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{
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PrivateOverheadMessage(
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MessageType.Regular,
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0x3B2,
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1071919, // * ~1_VAL~ slices through the plague beast's amorphous tissue *
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from.Name,
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m.NetState
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);
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}
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}
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from.LocalOverheadMessage(
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MessageType.Regular,
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0x21,
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1071904 // * You slice through the plague beast's amorphous tissue *
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);
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Timer.StartTimer(() => pack.Open(from));
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}
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}
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public virtual bool Scissor(Mobile from, Scissors scissors)
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{
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if (IsAccessibleTo(from))
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{
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scissors.PublicOverheadMessage(
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MessageType.Regular,
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0x3B2,
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1071918 // You can't cut through the plague beast's amorphous skin with scissors!
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);
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}
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return false;
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}
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public override void OnDoubleClick(Mobile from)
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{
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if (IsAccessibleTo(from))
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{
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if (OpenedBy != null && Backpack != null)
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{
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Backpack.DisplayTo(from);
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}
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else
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{
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PrivateOverheadMessage(
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MessageType.Regular,
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0x3B2,
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1071917,
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from.NetState
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); // * You attempt to tear open the amorphous flesh, but it resists *
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}
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}
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}
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public override bool OnDragDrop(Mobile from, Item dropped)
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{
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if (IsAccessibleTo(from) && (dropped is PlagueBeastInnard || dropped is PlagueBeastGland))
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{
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return base.OnDragDrop(from, dropped);
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}
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return false;
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}
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public override void OnDeath(Container c)
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{
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base.OnDeath(c);
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for (var i = c.Items.Count - 1; i >= 0; i--)
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{
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c.Items[i].Delete();
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}
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}
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public override void OnDelete()
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{
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if (OpenedBy?.Holding is PlagueBeastInnard)
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{
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OpenedBy.Holding.Delete();
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}
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if (Backpack != null)
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{
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for (var i = Backpack.Items.Count - 1; i >= 0; i--)
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{
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Backpack.Items[i].Delete();
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}
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Backpack.Delete();
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}
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base.OnDelete();
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}
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public override void OnMovement(Mobile m, Point3D oldLocation)
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{
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base.OnMovement(m, oldLocation);
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if (Backpack != null && IsAccessibleTo(m) && m.InRange(oldLocation, 3) && !m.InRange(this, 3))
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{
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Backpack.SendRemovePacket();
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}
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}
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public override bool CheckNonlocalLift(Mobile from, Item item) => true;
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public override bool CheckNonlocalDrop(Mobile from, Item item, Item target) => true;
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public override bool IsSnoop(Mobile from) => false;
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public override int GetIdleSound() => 0x1BF;
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public override int GetAttackSound() => 0x1C0;
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public override int GetHurtSound() => 0x1C1;
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public override int GetDeathSound() => 0x1C2;
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public virtual void OnParalyzed(Mobile from)
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{
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FightMode = FightMode.None;
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Frozen = true;
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Blessed = true;
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Combatant = null;
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Hue = 0x480;
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from.Combatant = null;
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from.Warmode = false;
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m_Timer = new DecayTimer(this);
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m_Timer.Start();
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Timer.StartTimer(BroadcastMessage);
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}
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private void BroadcastMessage()
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{
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PublicOverheadMessage(
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MessageType.Regular,
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0x3B2,
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1071920
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); // * The plague beast's amorphous flesh hardens and becomes immobilized *
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}
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public virtual bool IsAccessibleTo(Mobile check)
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{
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if (check.AccessLevel >= AccessLevel.GameMaster)
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{
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return true;
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}
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if (!InRange(check, 2))
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{
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PrivateOverheadMessage(MessageType.Label, 0x3B2, 500446, check.NetState); // That is too far away.
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}
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else if (OpenedBy != null && OpenedBy != check)
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{
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PrivateOverheadMessage(
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MessageType.Label,
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0x3B2,
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500365,
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check.NetState
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); // That is being used by someone else
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}
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else if (Frozen)
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{
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return true;
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}
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return false;
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}
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public void Unfreeze()
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{
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FightMode = FightMode.Closest;
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Frozen = false;
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Blessed = false;
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if (OpenedBy == null)
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{
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Hue = 0;
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}
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}
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public override void Serialize(IGenericWriter writer)
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{
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base.Serialize(writer);
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writer.WriteEncodedInt(0); // version
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writer.Write(OpenedBy);
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if (m_Timer != null)
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{
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writer.Write(true);
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writer.Write(m_Timer.Count);
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writer.Write(m_Timer.Deadline);
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}
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else
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{
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writer.Write(false);
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}
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}
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public override void Deserialize(IGenericReader reader)
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{
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base.Deserialize(reader);
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var version = reader.ReadEncodedInt();
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OpenedBy = reader.ReadEntity<Mobile>();
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if (reader.ReadBool())
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{
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var count = reader.ReadInt();
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var deadline = reader.ReadInt();
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m_Timer = new DecayTimer(this, count, deadline);
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m_Timer.Start();
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}
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if (FightMode == FightMode.None)
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{
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Frozen = true;
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}
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}
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private class DecayTimer : Timer
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{
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private readonly PlagueBeastLord m_Lord;
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public DecayTimer(PlagueBeastLord lord, int count = 0, int deadline = 120) : base(
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TimeSpan.Zero,
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TimeSpan.FromSeconds(1)
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)
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{
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m_Lord = lord;
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Count = count;
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Deadline = deadline;
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}
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public int Count { get; private set; }
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public int Deadline { get; private set; }
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protected override void OnTick()
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{
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if (m_Lord?.Deleted != false)
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{
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Stop();
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return;
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}
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if (Count + 15 == Deadline)
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{
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if (m_Lord.OpenedBy != null)
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{
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m_Lord.PublicOverheadMessage(
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MessageType.Regular,
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0x3B2,
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1071921
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); // * The plague beast begins to bubble and dissolve! *
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}
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m_Lord.PlaySound(0x103);
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}
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else if (Count + 10 == Deadline)
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{
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m_Lord.PlaySound(0x21);
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}
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else if (Count + 5 == Deadline)
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{
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m_Lord.PlaySound(0x1C2);
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}
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else if (Count == Deadline)
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{
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m_Lord.Unfreeze();
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if (m_Lord.OpenedBy != null)
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{
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m_Lord.Kill();
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}
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Stop();
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}
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else if (Count % 15 == 0)
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{
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m_Lord.PlaySound(0x1BF);
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}
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Count++;
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}
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public void StartDissolving()
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{
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Deadline = Math.Min(Count + 60, Deadline);
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}
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}
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}
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}
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