124 lines
3.5 KiB
C#
124 lines
3.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2019 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.Drawing;
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using System.Linq;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common
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{
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public static class ActorExts
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{
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public static bool IsAtGroundLevel(this Actor self)
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{
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if (self.OccupiesSpace == null)
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return false;
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if (!self.IsInWorld)
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return false;
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var map = self.World.Map;
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if (!map.Contains(self.Location))
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return false;
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return map.DistanceAboveTerrain(self.CenterPosition).Length == 0;
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}
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public static bool AppearsFriendlyTo(this Actor self, Actor toActor)
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{
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var stance = toActor.Owner.Stances[self.Owner];
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if (stance == Stance.Ally)
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return true;
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if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.Info.HasTraitInfo<IgnoresDisguiseInfo>())
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return toActor.Owner.Stances[self.EffectiveOwner.Owner] == Stance.Ally;
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return false;
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}
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public static bool AppearsHostileTo(this Actor self, Actor toActor)
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{
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var stance = toActor.Owner.Stances[self.Owner];
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if (stance == Stance.Ally)
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return false; /* otherwise, we'll hate friendly disguised spies */
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if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.Info.HasTraitInfo<IgnoresDisguiseInfo>())
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return toActor.Owner.Stances[self.EffectiveOwner.Owner] == Stance.Enemy;
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return stance == Stance.Enemy;
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}
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/// <summary>
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/// DEPRECATED: Write code that can handle FrozenActors correctly instead.
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/// </summary>
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public static Target ResolveFrozenActorOrder(this Actor self, Order order, Color targetLineColor)
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{
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// Not targeting a frozen actor
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if (order.Target.Type != TargetType.FrozenActor)
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return order.Target;
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var frozen = order.Target.FrozenActor;
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self.SetTargetLine(order.Target, targetLineColor, true);
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// Target is still alive - resolve the real order
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if (frozen.Actor != null && frozen.Actor.IsInWorld)
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return Target.FromActor(frozen.Actor);
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if (!order.Queued)
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self.CancelActivity();
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var move = self.TraitOrDefault<IMove>();
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if (move != null)
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{
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// Move within sight range of the frozen actor
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var range = self.TraitsImplementing<RevealsShroud>()
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.Where(s => !s.IsTraitDisabled)
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.Select(s => s.Range)
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.Append(WDist.FromCells(2))
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.Max();
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self.QueueActivity(move.MoveWithinRange(Target.FromPos(frozen.CenterPosition), range,
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targetLineColor: targetLineColor));
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}
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return Target.Invalid;
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}
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public static void NotifyBlocker(this Actor self, IEnumerable<Actor> blockers)
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{
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foreach (var blocker in blockers)
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{
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foreach (var moveBlocked in blocker.TraitsImplementing<INotifyBlockingMove>())
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moveBlocked.OnNotifyBlockingMove(blocker, self);
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}
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}
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public static void NotifyBlocker(this Actor self, CPos position)
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{
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NotifyBlocker(self, self.World.ActorMap.GetActorsAt(position));
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}
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public static void NotifyBlocker(this Actor self, IEnumerable<CPos> positions)
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{
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NotifyBlocker(self, positions.SelectMany(p => self.World.ActorMap.GetActorsAt(p)));
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}
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public static CPos ClosestCell(this Actor self, IEnumerable<CPos> cells)
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{
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return cells.MinByOrDefault(c => (self.Location - c).LengthSquared);
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}
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}
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}
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