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Add generation counting to Actor and Target

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This allows us to invalidate targets based on arbitrary conditions,
just by bumping the actor's generation number.

The next patches will use this.
This commit is contained in:
Chris Forbes
2013-06-13 09:38:07 +12:00
parent a9b6a94ade
commit 5bc47f4834
2 changed files with 5 additions and 2 deletions
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6
OpenRA.Game/Traits/Target.cs
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@@ -18,6 +18,7 @@ namespace OpenRA.Traits
Player owner;
PPos pos;
bool valid;
int generation;
public static Target FromActor(Actor a)
{
@@ -25,7 +26,8 @@ namespace OpenRA.Traits
{
actor = a,
valid = (a != null),
owner = (a != null) ? a.Owner : null
owner = (a != null) ? a.Owner : null,
generation = a.Generation,
};
}
public static Target FromPos(PPos p) { return new Target { pos = p, valid = true }; }
@@ -39,7 +41,7 @@ namespace OpenRA.Traits
public static readonly Target None = new Target();
public bool IsValid { get { return valid && (actor == null || (actor.IsInWorld && !actor.IsDead() && actor.Owner == owner)); } }
public bool IsValid { get { return valid && (actor == null || (actor.IsInWorld && !actor.IsDead() && actor.Owner == owner && actor.Generation == generation)); } }
public PPos PxPosition { get { return IsActor ? actor.Trait<IHasLocation>().PxPosition : pos; } }
public PPos CenterLocation { get { return PxPosition; } }