afd8b9ab86
* Maintains lists of claims, and only restricts reservations for friendly units. * Removes OnNotifyResourceClaimLost; it's not clear whether that is still useful, and it prevents future necessary cleanups. * Moves other code without changing behaviour. This fixed stale claims from dead units and enemy claims from preventing otherwise valid harvest activities.
74 lines
2.2 KiB
C#
74 lines
2.2 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2017 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, 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.Collections.Generic;
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using System.Linq;
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using OpenRA.Graphics;
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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("Allows harvesters to coordinate their operations. Attach this to the world actor.")]
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public sealed class ResourceClaimLayerInfo : TraitInfo<ResourceClaimLayer> { }
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public sealed class ResourceClaimLayer
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{
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readonly Dictionary<CPos, List<Actor>> claimByCell = new Dictionary<CPos, List<Actor>>(32);
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readonly Dictionary<Actor, CPos> claimByActor = new Dictionary<Actor, CPos>(32);
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/// <summary>
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/// Attempt to reserve the resource in a cell for the given actor.
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/// </summary>
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public bool TryClaimCell(Actor claimer, CPos cell)
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{
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var claimers = claimByCell.GetOrAdd(cell);
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// Clean up any stale claims
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claimers.RemoveAll(a => a.IsDead);
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// Prevent harvesters from the player or their allies fighting over the same cell
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if (claimers.Any(c => c != claimer && claimer.Owner.IsAlliedWith(c.Owner)))
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return false;
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// Remove the actor's last claim, if it has one
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CPos lastClaim;
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if (claimByActor.TryGetValue(claimer, out lastClaim))
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claimByCell.GetOrAdd(lastClaim).Remove(claimer);
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claimers.Add(claimer);
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claimByActor[claimer] = cell;
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return true;
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}
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/// <summary>
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/// Returns false if the cell is already reserved by an allied actor.
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/// </summary>
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public bool CanClaimCell(Actor claimer, CPos cell)
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{
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return !claimByCell.GetOrAdd(cell)
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.Any(c => c != claimer && !c.IsDead && claimer.Owner.IsAlliedWith(c.Owner));
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}
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/// <summary>
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/// Release the last resource claim made by this actor.
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/// </summary>
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/// <param name="claimer"></param>
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public void RemoveClaim(Actor claimer)
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{
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CPos lastClaim;
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if (claimByActor.TryGetValue(claimer, out lastClaim))
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claimByCell.GetOrAdd(lastClaim).Remove(claimer);
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claimByActor.Remove(claimer);
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}
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}
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}
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