140 lines
3.8 KiB
C#
140 lines
3.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
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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. For more information,
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* 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 OpenRA.GameRules;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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[Desc("Applies an upgrade to actors within a specified range.")]
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public class UpgradeActorsNearInfo : ITraitInfo
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{
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[UpgradeGrantedReference, FieldLoader.Require]
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[Desc("The upgrades to grant.")]
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public readonly string[] Upgrades = { };
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[Desc("The range to search for actors to upgrade.")]
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public readonly WDist Range = WDist.FromCells(3);
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[Desc("What diplomatic stances are affected.")]
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public readonly Stance ValidStances = Stance.Ally;
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[Desc("Grant the upgrades apply to this actor.")]
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public readonly bool AffectsParent = false;
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public readonly string EnableSound = null;
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public readonly string DisableSound = null;
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public object Create(ActorInitializer init) { return new UpgradeActorsNear(init.Self, this); }
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}
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public class UpgradeActorsNear : ITick, INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyOtherProduction
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{
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readonly UpgradeActorsNearInfo info;
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readonly Actor self;
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int proximityTrigger;
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WPos cachedPosition;
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WDist cachedRange;
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WDist desiredRange;
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bool cachedDisabled = true;
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public UpgradeActorsNear(Actor self, UpgradeActorsNearInfo info)
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{
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this.info = info;
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this.self = self;
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cachedRange = info.Range;
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}
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public void AddedToWorld(Actor self)
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{
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cachedPosition = self.CenterPosition;
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proximityTrigger = self.World.ActorMap.AddProximityTrigger(cachedPosition, cachedRange, ActorEntered, ActorExited);
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}
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public void RemovedFromWorld(Actor self)
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{
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self.World.ActorMap.RemoveProximityTrigger(proximityTrigger);
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}
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public void Tick(Actor self)
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{
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var disabled = self.IsDisabled();
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if (cachedDisabled != disabled)
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{
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Game.Sound.Play(disabled ? info.DisableSound : info.EnableSound, self.CenterPosition);
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desiredRange = disabled ? WDist.Zero : info.Range;
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cachedDisabled = disabled;
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}
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if (self.CenterPosition != cachedPosition || desiredRange != cachedRange)
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{
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cachedPosition = self.CenterPosition;
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cachedRange = desiredRange;
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self.World.ActorMap.UpdateProximityTrigger(proximityTrigger, cachedPosition, cachedRange);
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}
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}
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void ActorEntered(Actor a)
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{
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if (a.Disposed)
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return;
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if (a == self && !info.AffectsParent)
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return;
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var stance = self.Owner.Stances[a.Owner];
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if (!info.ValidStances.HasStance(stance))
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return;
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var um = a.TraitOrDefault<UpgradeManager>();
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if (um != null)
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foreach (var u in info.Upgrades)
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um.GrantUpgrade(a, u, this);
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}
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public void UnitProducedByOther(Actor self, Actor producer, Actor produced)
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{
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// Work around for actors produced within the region not triggering until the second tick
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if ((produced.CenterPosition - self.CenterPosition).HorizontalLengthSquared <= info.Range.LengthSquared)
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{
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var stance = self.Owner.Stances[produced.Owner];
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if (!info.ValidStances.HasStance(stance))
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return;
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var um = produced.TraitOrDefault<UpgradeManager>();
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if (um != null)
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foreach (var u in info.Upgrades)
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if (um.AcknowledgesUpgrade(produced, u))
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um.GrantTimedUpgrade(produced, u, 1);
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}
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}
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void ActorExited(Actor a)
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{
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if (a == self || a.Disposed)
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return;
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var stance = self.Owner.Stances[a.Owner];
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if (!info.ValidStances.HasStance(stance))
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return;
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var um = a.TraitOrDefault<UpgradeManager>();
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if (um != null)
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foreach (var u in info.Upgrades)
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um.RevokeUpgrade(a, u, this);
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}
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}
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}
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