public override void Update(/* inout */ SteeringBlender steering, Actor owner, IAgentStateManager agent)
{
if (!agent.HasProperty(AgentPropertyName.ActiveOpponent))
{
ZombieWaitState zws = new ZombieWaitState(6.0f);
agent.CurrentState = zws;
return;
}
Actor opponent = GameResources.ActorManager.GetActorById(agent.GetProperty <int>(AgentPropertyName.ActiveOpponent));
BipedControllerComponent opponentBcc = opponent.GetComponent <BipedControllerComponent>(ActorComponent.ComponentType.Control);
steering.Target = BepuConverter.Convert(opponentBcc.Controller.Body.Position);
BipedControllerComponent bcc = owner.GetComponent <BipedControllerComponent>(ActorComponent.ComponentType.Control);
BepuVec3 toOpponent = opponentBcc.Controller.Body.Position - bcc.Controller.Body.Position;
float distance = toOpponent.Length();
ZombieSkillSet zss = owner.GetBehaviorThatImplementsType <ZombieSkillSet>();
BipedWeapon chosenAttack = distance <= zss.MeleeSkill.EffectiveRangeMax ? zss.MeleeSkill : zss.RangedSkill;
Matrix attackTransform = Matrix.CreateTranslation(chosenAttack.MuzzleOffset) * Matrix.CreateWorld(
BepuConverter.Convert(bcc.Controller.Body.Position), BepuConverter.Convert(bcc.Controller.ViewDirection), Vector3.Up);
BepuVec3 bulletPath = opponentBcc.Controller.Body.Position - BepuConverter.Convert(attackTransform.Translation);
// If we don't have a shot, we need to specify what kind of movement we need to remedy that.
ZombieTacticalMovementState.MovementType movement = ZombieTacticalMovementState.MovementType.None;
if (distance < chosenAttack.EffectiveRangeMin)
{
movement = ZombieTacticalMovementState.MovementType.Retreat;
}
else if (distance > chosenAttack.EffectiveRangeMax)
{
movement = ZombieTacticalMovementState.MovementType.Close;
}
else
{
BepuRay loeRay = new BepuRay(BepuConverter.Convert(attackTransform.Translation), bulletPath);
LOSFilter filter = new LOSFilter(bcc.Controller.Body.CollisionInformation, opponentBcc.Controller.Body.CollisionInformation);
RayCastResult loeResult;
GameResources.ActorManager.SimSpace.RayCast(loeRay, chosenAttack.EffectiveRangeMax * 1.5f, filter.Test, out loeResult);
EntityCollidable otherEntityCollidable = loeResult.HitObject as EntityCollidable;
if (otherEntityCollidable != null &&
otherEntityCollidable.Entity != null &&
otherEntityCollidable.Entity.Tag != null &&
(int)(otherEntityCollidable.Entity.Tag) == opponent.Id)
{
toOpponent.Y = 0.0f;
toOpponent.Normalize();
float aimTheta = (float)(Math.Acos(MathHelper.Clamp(BepuVec3.Dot(toOpponent, bcc.Controller.ViewDirection), 0.0f, 1.0f)));
const float AIM_CONE_RADIANS = MathHelper.Pi / 12.0f;
if (aimTheta <= AIM_CONE_RADIANS)
{
// TODO: P2: Add some wander to this value:
bcc.WorldAim = BepuConverter.Convert(bulletPath);
//chosenAttack.CurrentOperation = WeaponFunctions.TriggerPulled;
BipedWeapon otherAttack = chosenAttack == zss.MeleeSkill ? zss.RangedSkill : zss.MeleeSkill;
otherAttack.UpdateInputState(false, bcc);
chosenAttack.UpdateInputState(true, bcc);
return;
}
}
else
{
movement = ZombieTacticalMovementState.MovementType.Lateral;
}
}
if (movement != ZombieTacticalMovementState.MovementType.None)
{
ZombieTacticalMovementState ztms = new ZombieTacticalMovementState(movement);
agent.CurrentState = ztms;
}
}
private void ProcessAIStepHandler(object sender, UpdateStepEventArgs e)
{
// Check FOV, add any new foes to memory. And update existing ones. We may also have gained new memories by other means.
// Get players and mobs in field of vision:
List <RayCastResult> actorsInView = new List <RayCastResult>();
ConeShape visionCone = new ConeShape(VisionDistance, VisionDistance);
BipedControllerComponent bcc = Owner.GetComponent <BipedControllerComponent>(ActorComponent.ComponentType.Control);
RigidTransform tipOverCone = new RigidTransform(BepuVec3.Forward * VisionDistance * 0.75f,
BepuQuaternion.CreateFromAxisAngle(BepuVec3.Right, MathHelper.PiOver2));
RigidTransform eyeLevelAndFacing = new RigidTransform(bcc.Controller.Body.Position - bcc.Controller.Down * bcc.Controller.Body.Height * 0.45f,
BepuConverter.Convert(SpaceUtils.GetOrientation(BepuConverter.Convert(bcc.Controller.ViewDirection), Vector3.Up)));
RigidTransform visionConeTransform;
RigidTransform.Transform(ref tipOverCone, ref eyeLevelAndFacing, out visionConeTransform);
BepuVec3 noSweep = BepuVec3.Zero;
ViewInterestFilter filter = new ViewInterestFilter(bcc.Controller.Body.CollisionInformation);
GameResources.ActorManager.SimSpace.ConvexCast(visionCone, ref visionConeTransform, ref noSweep, filter.Test, actorsInView);
for (int a = 0; a < actorsInView.Count; ++a)
{
// Does this actor warrant an addition to be made to our memory?
// If so, check for LOS and recheck range. If those tests pass, modify the memory.
EntityCollidable otherEntityCollidable = actorsInView[a].HitObject as EntityCollidable;
// We can jump to the Id in the Tag property because we know the filter has validated this.
int actorId = (int)(otherEntityCollidable.Entity.Tag);
Actor viewedActor = GameResources.ActorManager.GetActorById(actorId);
BipedControllerComponent viewedActorBcc = viewedActor.GetComponent <BipedControllerComponent>(ActorComponent.ComponentType.Control);
BepuVec3 toSubject = viewedActorBcc.Controller.Body.Position - eyeLevelAndFacing.Position;
// Check range:
if (toSubject.LengthSquared() <= VisionDistance * VisionDistance)
{
BepuRay losRay = new BepuRay(eyeLevelAndFacing.Position, toSubject);
RayCastResult losResult;
LOSFilter losFilter = new LOSFilter(bcc.Controller.Body.CollisionInformation, otherEntityCollidable);
GameResources.ActorManager.SimSpace.RayCast(losRay, VisionDistance, losFilter.Test, out losResult);
EntityCollidable losEC = losResult.HitObject as EntityCollidable;
// Test for LOS:
if (losEC != null &&
losEC.Entity != null &&
losEC.Entity.Tag != null &&
(int)(losEC.Entity.Tag) == actorId)
{
// The viewed actor is either a player(foe) or a mob(ally).
if (GameResources.ActorManager.IsPlayer(actorId))
{
mMemory.SpotFoe(actorId);
}
else
{
IAgentStateManager agent = viewedActor.GetBehaviorThatImplementsType <IAgentStateManager>();
if (agent != null &&
agent.HasProperty(AgentPropertyName.ActiveOpponent))
{
int mobFoe = agent.GetProperty <int>(AgentPropertyName.ActiveOpponent);
mMemory.SenseFoe(mobFoe);
}
}
}
}
}
// Evaluate current threats and select one to engage:
int enemyId = mMemory.GetLargestThreat();
if (enemyId != Actor.INVALID_ACTOR_ID)
{
if (mAgentProperties.ContainsKey(AgentPropertyName.ActiveOpponent))
{
if ((int)(mAgentProperties[AgentPropertyName.ActiveOpponent]) != enemyId)
{
mAgentProperties[AgentPropertyName.ActiveOpponent] = enemyId;
}
}
else
{
mAgentProperties.Add(AgentPropertyName.ActiveOpponent, enemyId);
}
}
else
{
if (mAgentProperties.ContainsKey(AgentPropertyName.ActiveOpponent))
{
mAgentProperties.Remove(AgentPropertyName.ActiveOpponent);
}
}
TimeInState += e.GameTime.ElapsedGameTime;
CurrentState.Update(mSteering, Owner, this);
Vector2 locomotion = mSteering.ComputeForce(Owner);
if (locomotion.LengthSquared() == 0.0f)
{
bcc.OrientationChange = Quaternion.Identity;
bcc.HorizontalMovement = Vector2.Zero;
}
else
{
bcc.OrientationChange = Quaternion.CreateFromAxisAngle(Vector3.Up, (float)(Math.Atan2(-locomotion.X, locomotion.Y)));
bcc.HorizontalMovement = locomotion.Length() * Vector2.UnitY;
}
mMemory.Fade(e.GameTime);
}