/**
* Updates the boids according to certain rules.
*
*/
void Update()
{
// Boid handle
Boid b;
float angle;
// Behaviour update loop
for (int i = 0; i < numActiveBoids; i++)
{
b = boids[i];
// Update position from game object location
b._pos = new Vector2(boidGameObject[i].transform.position.x, boidGameObject[i].transform.position.y);
// Store velocities generated from different rules
velocitiesFromRules[(int)BehaviouralRules.seekGoal] = adherences[(int)BehaviouralRules.seekGoal] == 0 || goalObj == null ? Vector2.zero : Behaviours.Rule_SeekGoal(b, goalObj.transform.position);
velocitiesFromRules[(int)BehaviouralRules.avoidObstacle] = adherences[(int)BehaviouralRules.avoidObstacle] == 0 || obstacleObj == null ? Vector2.zero : Behaviours.Rule_AvoidObstacle(b, obstacleObj.transform.position);
velocitiesFromRules[(int)BehaviouralRules.steerToMean] = adherences[(int)BehaviouralRules.steerToMean] == 0 ? Vector2.zero : Behaviours.Rule_SteerToMean(b, boids, numActiveBoids);
velocitiesFromRules[(int)BehaviouralRules.avoidCrowding] = adherences[(int)BehaviouralRules.avoidCrowding] == 0 ? Vector2.zero : Behaviours.Rule_AvoidCrowding(b, boids, numActiveBoids);
for (int j = 0; j < (int)BehaviouralRules.SIZE; j++)
{
b._velocity += (velocitiesFromRules[j] * adherences[j]) * Time.deltaTime * 100;
}
LimitVelocity(ref b._velocity);
boidGameObject[i].gameObject.transform.Translate(b._velocity);
// Keeps boids within the screen
StayWithinLimits(ref b);
// Get angle from velocity
angle = Mathf.Atan2(b._velocity.y, b._velocity.x) * Mathf.Rad2Deg - 90;
Quaternion rotation = Quaternion.AngleAxis(angle, Vector3.forward);
// Rotate sprite according to velocity, with smoothing
float smoothing = .2f; // 1 - No smoothing, 0 - Infinite
b._sprite.transform.rotation = Quaternion.Slerp(b._sprite.transform.rotation, rotation, smoothing);
}
}