public RenderRangeCircle(Actor self)
{
this.self = self;
attack = self.Trait <AttackBase>();
}
public AttackOrderTargeter(AttackBase ab, int priority)
{
this.ab = ab;
OrderID = ab.attackOrderName;
OrderPriority = priority;
}
public AttackOrderTargeter(AttackBase ab, int priority, bool negativeDamage)
{
this.ab = ab;
OrderID = ab.attackOrderName;
OrderPriority = priority;
}
Target ChooseTarget(Actor self, AttackBase ab, Stance attackStances, WDist scanRange, bool allowMove, bool allowTurn)
{
var chosenTarget = Target.Invalid;
var chosenTargetPriority = int.MinValue;
int chosenTargetRange = 0;
var activePriorities = activeTargetPriorities.ToList();
if (activePriorities.Count == 0)
{
return(chosenTarget);
}
var targetsInRange = self.World.FindActorsInCircle(self.CenterPosition, scanRange)
.Select(Target.FromActor)
.Concat(self.Owner.FrozenActorLayer.FrozenActorsInCircle(self.World, self.CenterPosition, scanRange)
.Select(Target.FromFrozenActor));
foreach (var target in targetsInRange)
{
BitSet <TargetableType> targetTypes;
Player owner;
if (target.Type == TargetType.Actor)
{
// PERF: Most units can only attack enemy units. If this is the case but the target is not an enemy, we
// can bail early and avoid the more expensive targeting checks and armament selection. For groups of
// allied units, this helps significantly reduce the cost of auto target scans. This is important as
// these groups will continuously rescan their allies until an enemy finally comes into range.
if (attackStances == OpenRA.Traits.Stance.Enemy && !target.Actor.AppearsHostileTo(self))
{
continue;
}
// Check whether we can auto-target this actor
targetTypes = target.Actor.GetEnabledTargetTypes();
if (PreventsAutoTarget(self, target.Actor) || !target.Actor.CanBeViewedByPlayer(self.Owner))
{
continue;
}
owner = target.Actor.Owner;
}
else if (target.Type == TargetType.FrozenActor)
{
if (attackStances == OpenRA.Traits.Stance.Enemy && self.Owner.Stances[target.FrozenActor.Owner] == OpenRA.Traits.Stance.Ally)
{
continue;
}
targetTypes = target.FrozenActor.TargetTypes;
owner = target.FrozenActor.Owner;
}
else
{
continue;
}
var validPriorities = activePriorities.Where(ati =>
{
// Already have a higher priority target
if (ati.Priority < chosenTargetPriority)
{
return(false);
}
// Incompatible stances
if (!ati.ValidStances.HasStance(self.Owner.Stances[owner]))
{
return(false);
}
// Incompatible target types
if (!ati.ValidTargets.Overlaps(targetTypes) || ati.InvalidTargets.Overlaps(targetTypes))
{
return(false);
}
return(true);
}).ToList();
if (validPriorities.Count == 0)
{
continue;
}
// Make sure that we can actually fire on the actor
var armaments = ab.ChooseArmamentsForTarget(target, false);
if (!allowMove)
{
armaments = armaments.Where(arm =>
target.IsInRange(self.CenterPosition, arm.MaxRange()) &&
!target.IsInRange(self.CenterPosition, arm.Weapon.MinRange));
}
if (!armaments.Any())
{
continue;
}
if (!allowTurn && !ab.TargetInFiringArc(self, target, 4 * ab.Info.FacingTolerance))
{
continue;
}
// Evaluate whether we want to target this actor
var targetRange = (target.CenterPosition - self.CenterPosition).Length;
foreach (var ati in validPriorities)
{
if (chosenTarget.Type == TargetType.Invalid || chosenTargetPriority < ati.Priority ||
(chosenTargetPriority == ati.Priority && targetRange < chosenTargetRange))
{
chosenTarget = target;
chosenTargetPriority = ati.Priority;
chosenTargetRange = targetRange;
}
}
}
return(chosenTarget);
}
Actor ChooseTarget(Actor self, AttackBase ab, Stance attackStances, WDist scanRange, bool allowMove)
{
Actor chosenTarget = null;
var chosenTargetPriority = int.MinValue;
int chosenTargetRange = 0;
var activePriorities = targetPriorities.Where(Exts.IsTraitEnabled)
.Select(at => at.Info)
.OrderByDescending(ati => ati.Priority)
.ToList();
if (!activePriorities.Any())
{
return(null);
}
var actorsInRange = self.World.FindActorsInCircle(self.CenterPosition, scanRange);
foreach (var actor in actorsInRange)
{
// PERF: Most units can only attack enemy units. If this is the case but the target is not an enemy, we
// can bail early and avoid the more expensive targeting checks and armament selection. For groups of
// allied units, this helps significantly reduce the cost of auto target scans. This is important as
// these groups will continuously rescan their allies until an enemy finally comes into range.
if (attackStances == OpenRA.Traits.Stance.Enemy && !actor.AppearsHostileTo(self))
{
continue;
}
// Check whether we can auto-target this actor
var targetTypes = actor.TraitsImplementing <ITargetable>()
.Where(Exts.IsTraitEnabled).SelectMany(t => t.TargetTypes)
.ToHashSet();
var target = Target.FromActor(actor);
var validPriorities = activePriorities.Where(ati =>
{
// Already have a higher priority target
if (ati.Priority < chosenTargetPriority)
{
return(false);
}
// Incompatible target types
if (!targetTypes.Overlaps(ati.ValidTargets) || targetTypes.Overlaps(ati.InvalidTargets))
{
return(false);
}
return(true);
}).ToList();
if (!validPriorities.Any() || PreventsAutoTarget(self, actor) || !actor.CanBeViewedByPlayer(self.Owner))
{
continue;
}
// Make sure that we can actually fire on the actor
var armaments = ab.ChooseArmamentsForTarget(target, false);
if (!allowMove)
{
armaments = armaments.Where(arm =>
target.IsInRange(self.CenterPosition, arm.MaxRange()) &&
!target.IsInRange(self.CenterPosition, arm.Weapon.MinRange));
}
if (!armaments.Any())
{
continue;
}
// Evaluate whether we want to target this actor
var targetRange = (target.CenterPosition - self.CenterPosition).Length;
foreach (var ati in validPriorities)
{
if (chosenTarget == null || chosenTargetPriority < ati.Priority ||
(chosenTargetPriority == ati.Priority && targetRange < chosenTargetRange))
{
chosenTarget = actor;
chosenTargetPriority = ati.Priority;
chosenTargetRange = targetRange;
}
}
}
return(chosenTarget);
}
Actor ChooseTarget(Actor self, AttackBase ab, Stance attackStances, WDist range, bool allowMove)
{
var actorsByArmament = new Dictionary <Armament, List <Actor> >();
var actorsInRange = self.World.FindActorsInCircle(self.CenterPosition, range);
foreach (var actor in actorsInRange)
{
// PERF: Most units can only attack enemy units. If this is the case but the target is not an enemy, we
// can bail early and avoid the more expensive targeting checks and armament selection. For groups of
// allied units, this helps significantly reduce the cost of auto target scans. This is important as
// these groups will continuously rescan their allies until an enemy finally comes into range.
if (attackStances == OpenRA.Traits.Stance.Enemy && !actor.AppearsHostileTo(self))
{
continue;
}
if (PreventsAutoTarget(self, actor) || !self.Owner.CanTargetActor(actor))
{
continue;
}
// Select only the first compatible armament for each actor: if this actor is selected
// it will be thanks to the first armament anyways, since that is the first selection
// criterion
var target = Target.FromActor(actor);
var armaments = ab.ChooseArmamentsForTarget(target, false);
if (!allowMove)
{
armaments = armaments.Where(arm =>
target.IsInRange(self.CenterPosition, arm.MaxRange()) &&
!target.IsInRange(self.CenterPosition, arm.Weapon.MinRange));
}
var armament = armaments.FirstOrDefault();
if (armament == null)
{
continue;
}
List <Actor> actors;
if (actorsByArmament.TryGetValue(armament, out actors))
{
actors.Add(actor);
}
else
{
actorsByArmament.Add(armament, new List <Actor> {
actor
});
}
}
// Armaments are enumerated in attack.Armaments in construct order
// When autotargeting, first choose targets according to the used armament construct order
// And then according to distance from actor
// This enables preferential treatment of certain armaments
// (e.g. tesla trooper's tesla zap should have precedence over tesla charge)
foreach (var arm in ab.Armaments)
{
List <Actor> actors;
if (actorsByArmament.TryGetValue(arm, out actors))
{
return(actors.ClosestTo(self));
}
}
return(null);
}