private AgentDirection CalculateAgentDirection(Vector3 selfPosition, Vector3 rayDirection, float sightFactor = 1.0f)
{
if (debug)
{
Debug.DrawRay(selfPosition, rayDirection * sight, visionColor);
}
//Calculate a random utility to initiate the AgentDirection.
float utility = Random.Range(Mathf.Min(randomDirectionValue.x, randomDirectionValue.y), Mathf.Max(randomDirectionValue.x, randomDirectionValue.y));
//Create an AgentDirection struct with a random utility value [utility]. Ignores y component.
AgentDirection direction = new AgentDirection(new Vector3(rayDirection.x, 0.0f, rayDirection.z), utility);
//Raycast into the rayDirection to check if something can be seen in that direction.
//The sightFactor is a variable that increases / decreases the size of the ray.
//For now, the sightFactor is only used to control the long sight in front of the agent.
if (Physics.Raycast(selfPosition, rayDirection, out RaycastHit raycastHit, sight * sightFactor))
{
if (debug)
{
Debug.DrawLine(selfPosition, raycastHit.point, foundColor);
}
//Calculate the normalized distance from the agent to the intersected object.
//Closer objects will have distancedNormalized close to 0, and further objects will have it close to 1.
float distanceNormalized = (raycastHit.distance / (sight * sightFactor));
//Inverts the distanceNormalized. Closer objects will tend to 1, while further objects will tend to 0.
//Thus, closer objects will have a higher value.
float distanceIndex = 1.0f - distanceNormalized;
//Calculate the utility of the found object according to its type.
switch (raycastHit.collider.gameObject.tag)
{
//All formulas are the same. Only the weights change.
case "Box":
utility = distanceIndex * distanceFactor + boxWeight;
break;
case "x4Box":
utility = distanceIndex * x4distanceFactor + x4boxWeight;
break;
case "x16Box":
utility = distanceIndex * x16distanceFactor + x16boxWeight;
break;
case "Boat":
utility = distanceIndex * boatDistanceFactor + boatWeight;
break;
case "Wall":
utility = distanceIndex * wallDistanceFactor + wallWeight;
break;
}
}
direction.utility = utility;
return(direction);
}
public void SetDecision(int index, Decision decide)
{
for (int i = 0; i < Data.AgentsCount; ++i)
{
AgentDirection dir = DirectionExtensions.CastPointToDir(decide.Agents[i]);
viewModel.Players[index].AgentViewModels[i].Data.AgentDirection = dir;
viewModel.Players[index].AgentViewModels[i].Data.State = AgentState.Move;
}
}
public void SetDirection(AgentDirection direction)
{
if (this.Direction != direction)
{
var scale = this.transform.localScale;
this.transform.localScale = new Vector3(-scale.x, scale.y, scale.z);
this.Direction = direction;
}
}
/// <summary>
/// Calculate the best direction to move using the Agent properties.
/// The agent shoots a ray in a area on front of itself and calculates the utility of each one of them based on what
/// it did intersect or using a random value (uses a Random from [randomDirectionValue.x, randomDirectionValue.y]).
/// </summary>
private void Act()
{
//Clear the visible objetcs with a small delay, so that the objects in actual range dont get ignored because the raycast moved
if (actIteration >= 60)
{
visibleObjects.Clear();
actIteration = 0;
//Reset environment factor along with the visible objects
speedEnvironmentWeight = 1f;
pullEnvironmentWeight = 1f;
multiplierEnvironmentWeight = 1f;
}
Transform selfTransform = transform;
Vector3 forward = selfTransform.forward;
//Ignores the y component to avoid flying/sinking Agents.
forward.y = 0.0f;
forward.Normalize();
Vector3 selfPosition = selfTransform.position;
//Initiate the rayDirection on the opposite side of the spectrum.
Vector3 rayDirection = Quaternion.Euler(0, -1.0f * steps * (rayRadius / 2.0f), 0) * forward;
//List of AgentDirection (direction + utility) for all the directions.
List <AgentDirection> directions = new List <AgentDirection>();
for (int i = 0; i <= rayRadius; i++)
{
//Add the new calculatedAgentDirection looking at the rayDirection.
directions.Add(CalculateAgentDirection(selfPosition, rayDirection));
//Rotate the rayDirection by _steps every iteration through the entire rayRadius.
rayDirection = Quaternion.Euler(0, steps, 0) * rayDirection;
}
//Adds an extra direction for the front view with a extra range.
directions.Add(CalculateAgentDirection(selfPosition, forward, 1.5f));
directions.Sort();
//There is a (100 - _maxUtilityChoiceChance) chance of using the second best option instead of the highest one. Should help into ambiguous situation.
AgentDirection highestAgentDirection = directions[Random.Range(0.0f, 100.0f) <= _maxUtilityChoiceChance ? 0 : 1];
//Rotate towards to direction. The factor of 0.1 helps to create a "rotation" animation instead of automatically rotates towards the target.
transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(highestAgentDirection.Direction), 0.1f);
//Sets the velocity using the chosen direction
_rigidbody.velocity = highestAgentDirection.Direction * movingSpeed * speedMultiplier;
actIteration++;
if (debug)
{
Debug.DrawRay(selfPosition, highestAgentDirection.Direction * (sight * 1.5f), directionColor);
}
}
/// <summary>
/// Notices that this method is an "inverse" sorting. It makes the higher values on top of the Sort, instead of
/// the smaller values. For the smaller values, the return line would be utility.CompareTo(otherAgent.utility).
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
AgentDirection otherAgent = (AgentDirection)obj;
return(otherAgent.utility.CompareTo(utility));
}
protected override bool Trigger()
{
if (this.Agent.DashStatus.IsDashing)
{
return(false);
}
if (Input.GetAxis("Horizontal") < -0.1)
{
this.direction = AgentDirection.Left;
return(true);
}
if (Input.GetAxis("Horizontal") > 0.1)
{
this.direction = AgentDirection.Right;
return(true);
}
return(false);
}
private void moveTowards()
{
// Move the agent towards the node
Vector3 update = Vector3.MoveTowards(lastPosition, target.WorldPosition, moveSpeed * Time.deltaTime);
// Get the movement vector only
Vector3 temp = update - lastPosition;
// Make sure the vector is not zero
if (temp.sqrMagnitude != 0)
{
// Check if the movement is up or down
if (temp.y <= 0.002f)
{
// Moving downwards - Default to forward where possible
direction = AgentDirection.Forward;
}
else
{
// Moving upwards
direction = AgentDirection.Backward;
}
if (temp.x > 0)
{
// Moiving right
direction |= AgentDirection.Right;
}
else if (temp.x < 0)
{
// Moving left
direction |= AgentDirection.Left;
}
}
// Set the moving flag
isMoving = (update != transform.position);
// Update the position
transform.position = update;
lastPosition = transform.position;
}
private AgentDirection CalculateAgentDirection(Vector3 selfPosition, Vector3 rayDirection, float sightFactor = 1.0f)
{
if (debug)
{
Debug.DrawRay(selfPosition, rayDirection * sight, visionColor);
}
//Calculate a random utility to initiate the AgentDirection.
float utility = Random.Range(Mathf.Min(randomDirectionValue.x, randomDirectionValue.y), Mathf.Max(randomDirectionValue.x, randomDirectionValue.y));
//Create an AgentDirection struct with a random utility value [utility]. Ignores y component.
AgentDirection direction = new AgentDirection(new Vector3(rayDirection.x, 0.0f, rayDirection.z), utility);
//Raycast into the rayDirection to check if something can be seen in that direction.
//The sightFactor is a variable that increases / decreases the size of the ray.
//For now, the sightFactor is only used to control the long sight in front of the agent.
if (Physics.Raycast(selfPosition, rayDirection, out RaycastHit raycastHit, sight * sightFactor))
{
if (debug)
{
Debug.DrawLine(selfPosition, raycastHit.point, foundColor);
}
//Calculate the normalized distance from the agent to the intersected object.
//Closer objects will have distancedNormalized close to 0, and further objects will have it close to 1.
float distanceNormalized = (raycastHit.distance / (sight * sightFactor));
//Inverts the distanceNormalized. Closer objects will tend to 1, while further objects will tend to 0.
//Thus, closer objects will have a higher value.
float distanceIndex = 1.0f - distanceNormalized;
GameObject visibleObject = raycastHit.collider.gameObject;
//Calculate the utility of the found object according to its type.
switch (visibleObject.tag)
{
case "Box":
utility = distanceIndex * boxDistanceFactor + boxWeight;
break;
case "Boat":
utility = distanceIndex * boatDistanceFactor + boatWeight;
break;
case "Enemy":
utility = distanceIndex * enemyDistanceFactor + enemyWeight;
break;
case "Speed":
if (!abled)
{
break;
}
utility = distanceIndex * speedDistanceFactor + speedWeight * speedEnvironmentWeight * speedActiveFactor;
break;
case "Pull":
if (!abled)
{
break;
}
utility = distanceIndex * pullDistanceFactor + pullWeight * pullEnvironmentWeight;
break;
case "Multiplier":
if (!abled)
{
break;
}
utility = distanceIndex * multiplierDistanceFactor + multiplierWeight * multiplierEnvironmentWeight * multiplierActiveFactor;
break;
}
//Add or update the object in the dictionary.
if (visibleObjects.ContainsKey(visibleObject))
{
visibleObjects[visibleObject] = utility;
}
else
{
visibleObjects.Add(visibleObject, utility);
//Increase the probability of the agent to pick up a powerup, depending on how many objects are around.
speedEnvironmentWeight += speedEnvironmentFactor;
pullEnvironmentWeight += pullEnvironmentFactor;
multiplierEnvironmentWeight += multiplierEnvironmentFactor;
}
}
direction.utility = utility;
return(direction);
}
