public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, Flock flock)
{
// If no neighbors, then no adjustment
if (context.Count == 0)
{
return(Vector2.zero);
}
// Otherwise average out position of neighbors
Vector2 move = Vector2.zero;
int nAvoid = 0;
List <Transform> filteredContext = (ContextFilter != null) ? ContextFilter.Filter(agent, context) : context;
foreach (Transform item in filteredContext)
{
bool inAvoidanceRadius = Vector2.SqrMagnitude(item.position - agent.transform.position) < flock.SquareAvoidanceRadius;
if (!inAvoidanceRadius)
{
continue;
}
++nAvoid;
move += (Vector2)(agent.transform.position - item.position);
}
return((nAvoid > 0) ? move / nAvoid : move);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, Flock flock)
{
// If no neighbors, then no adjustment
if (context.Count == 0)
{
return(Vector2.zero);
}
// Otherwise average out position of neighbors
Vector2 move = Vector2.zero;
List <Transform> filteredContext = (ContextFilter != null) ? ContextFilter.Filter(agent, context) : context;
foreach (Transform item in filteredContext)
{
move += (Vector2)item.position;
}
if (filteredContext.Count != 0)
{
move /= filteredContext.Count;
}
// Create offset from agent position
move -= (Vector2)agent.transform.position;
move = Vector2.SmoothDamp(agent.transform.up, move, ref currentVelocity, agentSmoothTime);
return(move);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, List <Transform> areaContext, Flock flock)
{
//hide from
List <Transform> filteredContext = (filter == null) ? areaContext : filter.Filter(agent, areaContext);
//hide behind
List <Transform> obstacleContext = (filter == null) ? areaContext : obstaclesFilter.Filter(agent, areaContext);
if (filteredContext.Count == 0)
{
return(Vector2.zero);
}
//find nearest obstacle
float nearestDistance = float.MaxValue;
Transform nearestObstacle = null;
foreach (Transform item in obstacleContext)
{
float Distance = Vector2.Distance(item.position, agent.transform.position);
if (Distance < nearestDistance)
{
nearestObstacle = item;
nearestDistance = Distance;
}
}
//return if no obstacle
if (nearestObstacle == null)
{
return(Vector2.zero);
}
//find best hiding spot
Vector2 move = Vector2.zero;
foreach (Transform item in filteredContext)
{
//direction from item to nearestObstacle
Vector2 obstacleDirection = nearestObstacle.position - item.position;
//add to that direction to get the point we need to hide behind
obstacleDirection += obstacleDirection.normalized * hideBehindObstacleDistance;
//get the position
Vector2 hidePosition = ((Vector2)item.position) + obstacleDirection;
move += hidePosition;
}
move /= filteredContext.Count;
//FOR DEBUG ONLY
Debug.DrawRay(move, Vector2.up * 3f);
//find direction the ai wants to move in
//ie the offset
move -= (Vector2)agent.transform.position;
return(move);
}
public override Vector2 CalculateMove(LifeAgent agent, List <Transform> context, Life life)
{
if (context.Count == 0)
{
return(Vector2.zero);
}
List <Transform> filteredContext = (filter == null) ? context : filter.Filter(agent, context);
List <Transform> obstacleContext = (filter == null) ? context : obstaclesFilter.Filter(agent, context);
if (filteredContext.Count == 0)
{
return(Vector2.zero);
}
//find nearest obstacle to hide behind
float nearestDistance = float.MaxValue;
Transform nearestObstacle = null;
foreach (Transform item in obstacleContext)
{
float distance = Vector2.Distance(item.position, agent.transform.position);
if (distance < nearestDistance)
{
nearestDistance = distance;
nearestObstacle = item;
}
}
//if no obstacle
if (nearestObstacle == null)
{
return(Vector2.zero);
}
//find best hiding spot
Vector2 hidePosition = Vector2.zero;
foreach (Transform item in filteredContext)
{
Vector2 obstacleDirection = nearestObstacle.position - item.position;
obstacleDirection = obstacleDirection.normalized * hideBehindObstacleDistance;
hidePosition += ((Vector2)nearestObstacle.position) + obstacleDirection;
}
hidePosition /= filteredContext.Count;
//for debug only
Debug.DrawRay(hidePosition, Vector2.up * 1f);
return(hidePosition - (Vector2)agent.transform.position);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, Flock flock)
{
if (context.Count == 0)
{
return(Vector2.zero);
}
//Filter obstacles and enemy AI is hiding from - filter from parent class
List <Transform> filteredContext = (filter == null) ? context: filter.Filter(agent, context);
//Hide behind
List <Transform> obstacleContext = (filter == null) ? context: obstacleFilter.Filter(agent, context);
if (filteredContext.Count == 0)
{
return(Vector2.zero);
}
//find nearest obstacle to hide behind
float nearestDistance = float.MaxValue;
Transform nearestObstacle = null;
foreach (Transform item in obstacleContext)
{
float distance = Vector2.Distance(item.position, agent.transform.position);
if (distance < nearestDistance)
{
nearestDistance = distance;
nearestObstacle = item;
}
}
//if no obstacle
if (nearestObstacle == null)
{
return(Vector2.zero);
}
//find best hiding spot
Vector2 hidePosition = Vector2.zero;
//Looking through every enemy and finding opposite direction from the enemy to obstacle
foreach (Transform item in filteredContext)
{
Vector2 obstacleDirection = nearestObstacle.position - item.position;
obstacleDirection = obstacleDirection.normalized * hideBehindObstacleDist; //Give direction magnitude of 1
hidePosition += ((Vector2)nearestObstacle.position) + obstacleDirection;
}
hidePosition /= filteredContext.Count;
//FOR DEBUG ONLY
Debug.DrawRay(hidePosition, Vector2.up * 1f);
return(hidePosition - (Vector2)agent.transform.position);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, List <Transform> areaContext, Flock flock)
{
List <Transform> filteredContext = (filter == null) ? areaContext : filter.Filter(agent, areaContext);
List <Transform> obstacleContext = (filter == null) ? areaContext : obstaclesFilter.Filter(agent, areaContext);
if (filteredContext.Count == 0)
{
return(Vector2.zero);
}
float nearestDistance = float.MaxValue;
Transform nearestObstacle = null;
foreach (Transform item in obstacleContext)
{
float Distance = Vector2.Distance(item.position, agent.transform.position);
//Get when enemies are in range and start animating
if (Distance < nearestDistance)
{
nearestObstacle = item;
nearestDistance = Distance;
agent.Animator.SetBool("flee", true);
}
else
{
agent.Animator.SetBool("flee", false);
}
}
if (nearestObstacle == null)
{
return(Vector2.zero);
}
Vector2 move = Vector2.zero;
foreach (Transform item in filteredContext)
{
//DIRECTION FROM ITEM TO NEARESTOBSTACLE
Vector2 obstacleDirection = nearestObstacle.position - item.position;
//ADD TO THAT DIRECTION TO GET THE POINT (BEHIND THE OBSTACLE) THAT WE NEED TO HIDE
obstacleDirection += obstacleDirection.normalized * hideBehindObstacleDistance;
Vector2 hidePosition = ((Vector2)item.position) + obstacleDirection;
move += hidePosition;
}
move /= filteredContext.Count;
Debug.DrawRay(move, Vector2.up * 3f);
move -= (Vector2)agent.transform.position;
enemies = areaContext;
return(move);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, List <Transform> areaContext, Flock flock)
{
//hide from
List <Transform> filteredContext = (filter == null) ? areaContext : filter.Filter(agent, areaContext);
//hide behind
List <Transform> obsticleContext = (filter == null) ? areaContext : obsticleFilter.Filter(agent, areaContext);
if (filteredContext.Count == 0)
{
return(Vector2.zero);
}
//find nearest obsticle
float nearestDistance = float.MaxValue;
Transform nearestObsticle = null;
foreach (Transform item in obsticleContext)
{
float Distance = Vector2.Distance(item.position, agent.transform.position);
if (Distance < nearestDistance)
{
nearestObsticle = item;
nearestDistance = Distance;
}
}
if (nearestObsticle == null)
{
return(Vector2.zero);
}
Vector2 move = Vector2.zero;
foreach (Transform item in filteredContext)
{
Vector2 obsticleDirection = nearestObsticle.position - item.position;
obsticleDirection += obsticleDirection.normalized * hideBehindObsticleDistance;
//get position
Vector2 hidePosition = ((Vector2)item.position) + obsticleDirection;
move += hidePosition;
}
move /= filteredContext.Count;
//debug only
Debug.DrawRay(move, Vector2.up * 3f);
//find direction AI want to move
move -= (Vector2)agent.transform.position;
return(move);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, List <Transform> nearbyContext, Flock flock)
{
if (context.Count == 0)
{
return(Vector2.zero);
}
Vector2 cohesionMove = Vector2.zero;
List <Transform> filteredContext = (filter == null) ? context : filter.Filter(agent, context);
foreach (Transform item in filteredContext)
{
cohesionMove += (Vector2)item.position;
}
cohesionMove /= context.Count;
cohesionMove -= (Vector2)agent.transform.position;
//Smoothen movement in flock
cohesionMove = Vector2.SmoothDamp(agent.transform.up, cohesionMove, ref currentVelocity, agentSmoothTime);
return(cohesionMove);
}
public override Vector2 CalculateMove(FlockAgent agent, List <Transform> context, Flock flock)
{
// If no neighbors, maintain current alignment
if (context.Count == 0)
{
return(agent.transform.up);
}
// Otherwise average out alignment of neighbors
Vector2 move = Vector2.zero;
List <Transform> filteredContext = (ContextFilter != null) ? ContextFilter.Filter(agent, context) : context;
foreach (Transform item in filteredContext)
{
move += (Vector2)item.up;
}
if (filteredContext.Count != 0)
{
move /= filteredContext.Count;
}
return(move);
}
//Moves freely as a flock
IEnumerator WanderState()
{
Debug.Log("Wander Enter");
if (flock.behavior != wanderBehavior)
{
flock.behavior = wanderBehavior;
}
while (state == State.Wander)
{
foreach (FlockAgent agent in flock.agents)
{
List <Transform> filteredContext = (filter == null) ? flock.areaContext : filter.Filter(agent, flock.areaContext);
if (filteredContext.Count > 0)
{
state = State.Hide;
}
}
yield return(0);
}
Debug.Log("Wander Exit");
NextState();
}
private IEnumerator EvadeState()
{
while (lifeStates == LifeStates.Evade)
{
print("Prey are evading predator");
preyStateText.text = "Prey State: " + LifeStates.Evade.ToString();
foreach (FlockAgent agent in flock.agents)
{
List <Transform> filteredContext = (otherFlock == null) ? flock.context : otherFlock.Filter(agent, flock.context);
if (filteredContext.Count <= 0) //if count of other flock (predators) is less than 0 then go to wander behavior
{
lifeStates = LifeStates.Wander;
}
Vector2 velocity = evadeBehavior.CalculateMove(agent, GetNearbyObjects(agent), flock);
agent.Move(velocity);
}
yield return(null);
}
NextState();
yield return(null);
}
//Moves between waypoints
IEnumerator PatrolState()
{
Debug.Log("Patrol Enter");
if (flock.behavior != patrolBehavior)
{
flock.behavior = patrolBehavior;
}
while (state == State.Patrol)
{
timer += Time.deltaTime;
foreach (FlockAgent agent in flock.agents)
{
List <Transform> filteredContext = (filter == null) ? flock.areaContext : filter.Filter(agent, flock.areaContext);
if (filteredContext.Count > 0 && timer >= 15)
{
state = State.Chase;
timer = 0;
}
}
yield return(0);
}
Debug.Log("Patrol Exit");
NextState();
}
