///<summary>
/// Gets the closest points between the shapes.
///</summary>
///<param name="shapeA">First shape of the pair.</param>
///<param name="shapeB">Second shape of the pair.</param>
///<param name="transformA">Transform to apply to the first shape.</param>
///<param name="transformB">Transform to apply to the second shape.</param>
/// <param name="cachedSimplex">Simplex from a previous updated used to warmstart the current attempt. Updated after each run.</param>
///<param name="closestPointA">Closest point on the first shape to the second shape.</param>
///<param name="closestPointB">Closest point on the second shape to the first shape.</param>
///<returns>Whether or not the objects were intersecting. If they are intersecting, then the closest points cannot be identified.</returns>
public static bool GetClosestPoints(ConvexShape shapeA, ConvexShape shapeB, ref RigidTransform transformA, ref RigidTransform transformB,
ref CachedSimplex cachedSimplex, out Vector3 closestPointA, out Vector3 closestPointB)
{
RigidTransform localtransformB;
MinkowskiToolbox.GetLocalTransform(ref transformA, ref transformB, out localtransformB);
bool toReturn = GetClosestPoints(shapeA, shapeB, ref localtransformB, ref cachedSimplex, out closestPointA, out closestPointB);
RigidTransform.Transform(ref closestPointA, ref transformA, out closestPointA);
RigidTransform.Transform(ref closestPointB, ref transformA, out closestPointB);
return(toReturn);
}
public override void Fire()
{
const float ATTACK_RADIUS = 3.0f;
const float ATTACK_LENGTH = 4.0f;
// Play 'thwack' sound
Actor owner = GameResources.ActorManager.GetActorById(OwnerActorId);
BipedControllerComponent bipedControl = owner.GetComponent <BipedControllerComponent>(ActorComponent.ComponentType.Control);
RigidTransform alignCapsule = new RigidTransform(BepuVec3.Forward * ATTACK_LENGTH * 0.5f + BepuConverter.Convert(MuzzleOffset),
BepuQuaternion.CreateFromAxisAngle(BepuVec3.Right, MathHelper.PiOver2));
Vector3 aim = (bipedControl.WorldAim.HasValue ? bipedControl.WorldAim.Value :
BepuConverter.Convert(bipedControl.Controller.ViewDirection));
RigidTransform positionAndAim = new RigidTransform(bipedControl.Controller.Body.Position, BepuConverter.Convert(
SpaceUtils.GetOrientation(aim, Vector3.Up)));
RigidTransform attackTransform;
RigidTransform.Transform(ref alignCapsule, ref positionAndAim, out attackTransform);
ConvexShape bashShape = new CapsuleShape(ATTACK_LENGTH, ATTACK_RADIUS);
BepuVec3 noSweep = BepuVec3.Zero;
List <RayCastResult> dudesBashed = new List <RayCastResult>();
AttackFilter filter = new AttackFilter(GameResources.ActorManager.IsMob(OwnerActorId));
GameResources.ActorManager.SimSpace.ConvexCast(bashShape, ref attackTransform, ref noSweep, filter.Test, dudesBashed);
foreach (RayCastResult dude in dudesBashed)
{
EntityCollidable otherEntityCollidable = dude.HitObject as EntityCollidable;
Terrain otherTerrain = dude.HitObject as Terrain;
if (otherEntityCollidable != null &&
otherEntityCollidable.Entity != null &&
otherEntityCollidable.Entity.Tag != null)
{
Actor actorHit = GameResources.ActorManager.GetActorById((int)(otherEntityCollidable.Entity.Tag));
IDamagable damage = actorHit.GetBehaviorThatImplementsType <IDamagable>();
if (damage != null)
{
damage.TakeDamage(Damage);
// TODO: P2: Query hit actor for appropiate damage effect e.g. blood and create it;
}
BashDust(dude.HitData.Location);
}
else if (otherTerrain != null)
{
BashDust(dude.HitData.Location);
}
}
}
///<summary>
/// Gets the closest points between the shapes.
///</summary>
///<param name="shapeA">First shape of the pair.</param>
///<param name="shapeB">Second shape of the pair.</param>
///<param name="transformA">Transform to apply to the first shape.</param>
///<param name="transformB">Transform to apply to the second shape.</param>
///<param name="closestPointA">Closest point on the first shape to the second shape.</param>
///<param name="closestPointB">Closest point on the second shape to the first shape.</param>
///<returns>Whether or not the objects were intersecting. If they are intersecting, then the closest points cannot be identified.</returns>
public static bool GetClosestPoints(ConvexShape shapeA, ConvexShape shapeB, ref RigidTransform transformA, ref RigidTransform transformB,
out Vector3 closestPointA, out Vector3 closestPointB)
{
//The cached simplex stores locations that are local to the shapes. A fairly decent initial state is between the centroids of the objects.
//In local space, the centroids are at the origins.
RigidTransform localtransformB;
MinkowskiToolbox.GetLocalTransform(ref transformA, ref transformB, out localtransformB);
var simplex = new CachedSimplex {
State = SimplexState.Point
};
// new CachedSimplex(shapeA, shapeB, ref localtransformB);
bool toReturn = GetClosestPoints(shapeA, shapeB, ref localtransformB, ref simplex, out closestPointA, out closestPointB);
RigidTransform.Transform(ref closestPointA, ref transformA, out closestPointA);
RigidTransform.Transform(ref closestPointB, ref transformA, out closestPointB);
return(toReturn);
}
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);
}