public override BehaviourStatus OnBehave(BehaviourState state)
{
BehaviourContext enemyContext = (BehaviourContext)state;
if (enemyContext.enemyInSight())
{
playerPosition = GameObject.FindGameObjectWithTag("Player").transform.position;
}
if ((!enemyContext.enemyInRange(0.5f) && !enemyContext.enemyTooClose()))
{
enemyContext.enemyWeaponController.isFiring = false;
return(BehaviourStatus.FAILURE);
}
if ((!enemyContext.enemyTooClose() && enemyContext.enemyInSight()))
{
enemyContext.enemyWeaponController.isFiring = false;
return(BehaviourStatus.SUCCESS);
}
/////////////////////////////////////////////////////////////
if (closestNode == null)
{
closestNode = PathFinder.getRetreatNode(enemyContext.pathNodes, enemyContext.enemyPhysics.transform, playerPosition);
}
if (PathFinder.atDestination(enemyContext.enemy.transform, closestNode.transform.position))
{
closestNode = PathFinder.getRetreatNeighbor(closestNode, enemyContext.enemy.transform, playerPosition);
if (closestNode == null)
{
closestNode = PathFinder.getRetreatNode(enemyContext.pathNodes, enemyContext.enemyPhysics.transform, playerPosition);
}
}
enemyContext.enemyPhysics.enemyRotation(playerPosition);
if (enemyContext.enemyAnimation.GetCurrentAnimatorStateInfo(0).IsName("idle") ||
enemyContext.enemyAnimation.GetCurrentAnimatorStateInfo(0).IsName("attack"))
{
enemyContext.enemyAnimation.Play("walk");
}
enemyContext.enemyPhysics.enemyMovement(closestNode.transform.position, angle);
if (!enemyContext.enemyWeaponController.isFiring)
{
enemyContext.enemyWeaponController.isFiring = true;
}
////////////////////////////////////////////////////////////////
return(BehaviourStatus.RUNNING);
}
//Leaf node that checks whether or not the target is not seen or heard so it can patrol.
public override BehaviourStatus OnBehave(BehaviourState state)
{
BehaviourContext enemyContext = (BehaviourContext)state;
if (!enemyContext.enemyInSight() && !enemyContext.enemyInRange(0.5f) && !enemyContext.playerHeard)
{
if (enemyContext.enemySight.enableDebug)
{
Debug.Log("Player Not Found");
}
return(BehaviourStatus.SUCCESS);
}
return(BehaviourStatus.FAILURE);
}
//Leaf node responsible for getting the start node closest to the enemy and a random end node
//responsible for the enemy patrolling.
public override BehaviourStatus OnBehave(BehaviourState state)
{
BehaviourContext enemyContext = (BehaviourContext)state;
if (enemyContext.enemyInSight() || enemyContext.enemyInRange(0.5f))
{
return(BehaviourStatus.FAILURE);
}
if (enemyContext.startNode == null)
{
enemyContext.startNode = PathFinder.getInitialNode(enemyContext.pathNodes,
enemyContext.enemyPhysics.transform.position);
enemyContext.startInfo = enemyContext.startNode.GetComponent <NodeController> ();
}
enemyContext.endNode = PathFinder.getEndNode(enemyContext.pathNodes, enemyContext.startNode);
return(BehaviourStatus.SUCCESS);
}
public override BehaviourStatus OnBehave(BehaviourState state)
{
BehaviourContext enemyContext = (BehaviourContext)state;
if (!enemyContext.enemyInRange(0.5f) || !enemyContext.enemyInSight() || enemyContext.enemyTooClose())
{
if (enemyContext.enemyAnimation.GetCurrentAnimatorStateInfo(0).IsName("attack"))
{
enemyContext.enemyAnimation.Play("idle");
}
enemyContext.enemyWeaponController.isFiring = false;
return(BehaviourStatus.FAILURE);
}
if (GameObject.FindGameObjectWithTag("Player") != null)
{
playerPosition = GameObject.FindGameObjectWithTag("Player").transform.position;
}
else
{
enemyContext.enemyWeaponController.isFiring = false;
return(BehaviourStatus.SUCCESS);
}
enemyContext.enemyPhysics.enemyRotation(playerPosition);
if (enemyContext.enemyAnimation.GetCurrentAnimatorStateInfo(0).IsName("idle") ||
enemyContext.enemyAnimation.GetCurrentAnimatorStateInfo(0).IsName("walk"))
{
enemyContext.enemyAnimation.Play("attack");
}
if (!enemyContext.enemyWeaponController.isFiring)
{
enemyContext.enemyWeaponController.isFiring = true;
}
return(BehaviourStatus.RUNNING);
}
public override BehaviourStatus OnBehave(BehaviourState state)
{
BehaviourContext enemyContext = (BehaviourContext)state;
//Checks if the player is in sight, or the player has fired a shot that is has heard recently to chase.
if (enemyContext.enemyInSight())
{
playerPosition = GameObject.FindGameObjectWithTag("Player").transform.position;
}
else if (enemyContext.playerHeard && enemyContext.playerRecentShot)
{
enemyContext.playerRecentShot = false;
RaycastHit hit;
playerPosition = GameObject.FindGameObjectWithTag("Player").transform.position;
Vector3 rayDirection = playerPosition - enemyContext.enemy.transform.position;
if (Physics.Raycast(enemyContext.enemy.transform.position, rayDirection, out hit, enemyContext.enemySight.viewDistance))
{
if (hit.collider.tag == "Player")
{
chaseHearing = true;
}
else
{
chaseHearing = false;
hearPath = true;
}
}
}
//Fails if the player is not in sight, and it has not been heard after it has finished its path.
if (!enemyContext.enemyInSight() && !enemyContext.playerHeard && playerPath.Count == 0)
{
enemyContext.playerHeard = false;
return(BehaviourStatus.FAILURE);
}
//If it has reached the players position and the player is in sight it successful, else it fails if it reaches the last known
//destination with no player.
if (atPlayer(enemyContext.enemy.transform, playerPosition, enemyContext.enemyRange) && enemyContext.enemyInSight())
{
enemyContext.enemyAnimation.Play("idle");
enemyContext.playerHeard = false;
return(BehaviourStatus.SUCCESS);
}
else if (PathFinder.atDestination(enemyContext.enemy.transform, playerPosition) && !enemyContext.enemyInSight())
{
chaseHearing = false;
enemyContext.playerHeard = false;
return(BehaviourStatus.FAILURE);
}
if (Physics.Raycast(playerPosition, Vector3.down, out playerHit, 30.0f) && Physics.Raycast(enemyContext.enemy.transform.position, Vector3.down, out enemyHit, 10.0f))
{
//Checks if the player and enemy are on the same plane making sure they are heard or insight.
//If so it moves to the player position.
if (playerHit.collider.name == enemyHit.collider.name && (enemyContext.enemyInSight() || chaseHearing))
{
if (playerPath.Count > 0)
{
playerPath.Clear();
}
targetPosition = playerPosition;
//If not it calculates a path to the player so it avoids walls and running into obstacles.
}
else if (playerHit.collider.name != currentPlaneName && (enemyContext.enemyInSight() || (!chaseHearing && hearPath)))
{
startNode = PathFinder.getPlaneNode(enemyContext.planeNodes, enemyContext.enemy.transform.position, enemyHit);
endNode = PathFinder.getPlaneNode(enemyContext.planeNodes, playerPosition, playerHit);
currentPlaneName = playerHit.collider.name;
hearPath = false;
if (startNode != null && endNode != null)
{
if (startNode.transform == endNode.transform)
{
if (playerPath.Count > 0)
{
playerPath.Clear();
}
targetPosition = playerPosition;
}
else
{
playerPath = PathFinder.getPath(startNode, endNode);
offsetMod = false;
pathCounter = 0;
//Makes sure it does not turn around to go to a node behind it.
NodeController firstNode = (NodeController)playerPath [pathCounter];
if (PathFinder.isNodeBehind(firstNode.transform.position, enemyContext.enemy.transform))
{
pathCounter++;
}
}
}
else
{
targetPosition = playerPosition;
}
}
//Part of the behaviour for moving through the path nodes and processing the queue.
if (playerPath.Count > 0)
{
currentNode = (NodeController)playerPath [pathCounter];
modPositionOffset();
targetPosition = currPos;
if (PathFinder.atDestination(enemyContext.enemy.transform, targetPosition))
{
if (pathCounter == playerPath.Count - 1)
{
playerPath.Clear();
if (enemyContext.enemyInSight())
{
targetPosition = playerPosition;
}
else
{
enemyContext.playerHeard = false;
return(BehaviourStatus.FAILURE);
}
}
else
{
pathCounter++;
currentNode = (NodeController)playerPath [pathCounter];
offsetMod = false;
modPositionOffset();
targetPosition = currPos;
}
}
}
rotateAndMove(enemyContext, targetPosition);
}
return(BehaviourStatus.RUNNING);
}
