0b4a54ab54
- Consuming methods cared only about the count and not the actual actors, so only counts the actors rather that creating lists. - ProvidesPrerequisites implementations return cached objects rather then allocating new enumerables on each call.
107 lines
2.9 KiB
C#
107 lines
2.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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public class ProvidesPrerequisiteInfo : ConditionalTraitInfo, ITechTreePrerequisiteInfo
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{
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[Desc("The prerequisite type that this provides. If left empty it defaults to the actor's name.")]
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public readonly string Prerequisite = null;
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[Desc("Only grant this prerequisite when you have these prerequisites.")]
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public readonly string[] RequiresPrerequisites = Array.Empty<string>();
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[Desc("Only grant this prerequisite for certain factions.")]
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public readonly HashSet<string> Factions = new();
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[Desc("Should it recheck everything when it is captured?")]
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public readonly bool ResetOnOwnerChange = false;
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IEnumerable<string> ITechTreePrerequisiteInfo.Prerequisites(ActorInfo info)
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{
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return new string[] { Prerequisite ?? info.Name };
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}
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public override object Create(ActorInitializer init) { return new ProvidesPrerequisite(init, this); }
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}
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public class ProvidesPrerequisite : ConditionalTrait<ProvidesPrerequisiteInfo>, ITechTreePrerequisite, INotifyOwnerChanged, INotifyCreated
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{
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readonly string[] prerequisites;
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bool enabled;
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TechTree techTree;
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string faction;
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public ProvidesPrerequisite(ActorInitializer init, ProvidesPrerequisiteInfo info)
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: base(info)
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{
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if (string.IsNullOrEmpty(info.Prerequisite))
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prerequisites = new[] { init.Self.Info.Name };
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else
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prerequisites = new[] { info.Prerequisite };
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faction = init.GetValue<FactionInit, string>(init.Self.Owner.Faction.InternalName);
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}
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public IEnumerable<string> ProvidesPrerequisites => enabled ? prerequisites : Enumerable.Empty<string>();
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protected override void Created(Actor self)
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{
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techTree = self.Owner.PlayerActor.Trait<TechTree>();
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Update();
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base.Created(self);
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}
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public void OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
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{
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techTree = newOwner.PlayerActor.Trait<TechTree>();
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if (Info.ResetOnOwnerChange)
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faction = newOwner.Faction.InternalName;
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Update();
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}
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void Update()
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{
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enabled = !IsTraitDisabled;
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if (IsTraitDisabled)
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return;
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if (Info.Factions.Count > 0)
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enabled = Info.Factions.Contains(faction);
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if (Info.RequiresPrerequisites.Length > 0 && enabled)
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enabled = techTree.HasPrerequisites(Info.RequiresPrerequisites);
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}
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protected override void TraitEnabled(Actor self)
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{
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Update();
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techTree.ActorChanged(self);
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}
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protected override void TraitDisabled(Actor self)
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{
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Update();
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techTree.ActorChanged(self);
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}
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}
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}
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