//Ambush Point determination function for Melee-based classes
public Vector3 LookForAmbushPoint(AI_Logic.Strategy strategy, Transform agent, Transform threat, int a)
{
/*Generates a waypoint for the agent to go to in order to achieve a certain strategy/goal
* e.g. sneaking up on the threat;backing off to avoid more danger; approaching the threat to get better shooting accuracy
**/
Vector3 ambushPoint = Vector3.zero;
//generating an ambush point around the threat's radius
if (strategy == AI_Logic.Strategy.Sneak)
{
Vector3 radius = agent.position - threat.position;
float theta = 5 * rand.Next(1, 9); //theta is in range [5, 45)
int angleDir = rand.Next(1, 10); //random sign:- or +
if (angleDir < 5)
{
theta = theta * (-1);
}
Vector3 delta_Position = Quaternion.AngleAxis(theta, Vector3.up) * (-threat.forward.normalized); //find a point behind the threat and rotate by theta
float radius_Length = 5.09f + (float)rand.Next(0, Mathf.Max((int)radius.magnitude - 5, 1)); //randomize the radius length
delta_Position = delta_Position * radius_Length; //scale the change in position
ambushPoint = threat.position + delta_Position; //offset threat's position by delta_Position
}
else
{
Vector3 radius = agent.position - threat.position;
Vector3 delta_Position = Quaternion.AngleAxis(15 * rand.Next(1, 24), Vector3.up) * radius.normalized; //rotate radius by random angle theta E [15,360]
float radius_Length = 1.0f;
if (strategy == AI_Logic.Strategy.Approach)
{
radius_Length = 5.09f + (float)rand.Next(0, Mathf.Max((int)radius.magnitude - 5, 1)); //reduce the radius between the agent and threat
}
else if (strategy == AI_Logic.Strategy.StepBack)
{
radius_Length = (float)rand.Next((int)(radius.magnitude + 5), (int)(radius.magnitude + 40));
}
delta_Position = delta_Position * radius_Length;
ambushPoint = threat.position + delta_Position;
}
return(ambushPoint);
}
//Ambush Point determination function for Gun-based classes
public Vector3 LookForAmbushPoint(AI_Logic.Strategy strategy, Transform agent, Transform threat)
{
if (agent.GetComponent <EnemyCharacter> ().enemyType == "Gun")
{
GameObject[] enemies = GameObject.FindGameObjectsWithTag("Enemy");
Vector2 computationVector = Vector3.zero;
//separation part of the boid algorithm
for (int a = 0; a < enemies.Length; a++)
{
if ((enemies[a].transform.position - agent.transform.position).magnitude < neighboringDistance)
{
computationVector.x += agent.transform.position.x - enemies [a].transform.position.x;
computationVector.y += agent.transform.position.z - enemies [a].transform.position.z;
}
}
computationVector.x /= enemies.Length;
computationVector.y /= enemies.Length;
Vector3 waypoint = new Vector3(computationVector.x, computationVector.y, agent.transform.position.z) * -5;
return(waypoint);
}
else
{
Vector3 ambushPoint = Vector3.zero;
//generating an ambush point around the threat's radius
if (strategy == AI_Logic.Strategy.Sneak)
{
Vector3 radius = agent.position - threat.position;
float theta = 5 * rand.Next(1, 9); //theta is in range [5, 45)
int angleDir = rand.Next(1, 10); //random sign:- or +
if (angleDir < 5)
{
theta = theta * (-1);
}
Vector3 delta_Position = Quaternion.AngleAxis(theta, Vector3.up) * (-threat.forward.normalized); //find a point behind the threat and rotate by theta
float radius_Length = 5.09f + (float)rand.Next(0, Mathf.Max((int)radius.magnitude - 5, 1)); //randomize the radius length
delta_Position = delta_Position * radius_Length; //scale the change in position
ambushPoint = threat.position + delta_Position; //offset threat's position by delta_Position
}
else
{
Vector3 radius = agent.position - threat.position;
Vector3 delta_Position = Quaternion.AngleAxis(15 * rand.Next(1, 24), Vector3.up) * radius.normalized; //rotate radius by random angle theta E [15,360]
float radius_Length = 1.0f;
if (strategy == AI_Logic.Strategy.Approach)
{
radius_Length = 5.09f + (float)rand.Next(0, Mathf.Max((int)radius.magnitude - 5, 1)); //reduce the radius between the agent and threat
}
else if (strategy == AI_Logic.Strategy.StepBack)
{
radius_Length = (float)rand.Next((int)(radius.magnitude + 5), (int)(radius.magnitude + 40));
}
delta_Position = delta_Position * radius_Length;
ambushPoint = threat.position + delta_Position;
}
return(ambushPoint);
}
}
