private bool obstracleDetect()
{
Collider[] colliders = Physics.OverlapSphere(transform.position, 15);
foreach (Collider collide in colliders)
{
if (collide.gameObject.tag == "collideEnv")
{
//Vector3 enemyDirectionLocal = transform.InverseTransformPoint(collide.gameObject.transform.position);
string enemyDirectionLocal = AllHelperFunctions.whereIsObject(transform, collide.gameObject.transform);
if ((String.Compare(enemyDirectionLocal, "up") != 0) &&
(String.Compare(enemyDirectionLocal, "down") != 0))
{
if (String.Compare(enemyDirectionLocal, "left") == 0)
{
obstracleIn = 1;
}
else if (String.Compare(enemyDirectionLocal, "right") == 0)
{
obstracleIn = -1;
}
return(true);
}
}
//else obstracleIn = 0;
}
return(false);
}
// Update is called once per frame
void Update()
{
string targetPosition = AllHelperFunctions.whereIsObject(transform, target, false);
if (!playerDied && enemyCarHelper.isNear(transform.position, target.position, maxDistance) && String.Compare("down", targetPosition) != 0)
{
rotateHolders();
playerDied = carHelper.isDead;
}
}
private void FixedUpdate()
{
setDriving(carHelper.isDead);
if (!playerDied)
{
//
Vector3 offsetTargetPos = m_Target.position;
Vector3 localTarget = transform.InverseTransformPoint(offsetTargetPos);
string targetPosition = AllHelperFunctions.whereIsObject(transform, enemyGun.getTarget(), false);
//Debug.Log(targetPosition);
if (localTarget.magnitude >= maxDistance)
{
m_Driving = false;
}
else if ((
localTarget.magnitude > m_ReachTargetThreshold ||
localTarget.magnitude <= maxDistance) &&
(
String.Compare(targetPosition, "down") != 0
)
)
{
//if ((localTarget.magnitude < m_ReachTargetThreshold - 5) || obstracleDetect())
//{
// if (obstracleIn == 1) m_CarController.Move(steer += 0.5f, 0, -0.9f, 0);
// else if (obstracleIn == -1) m_CarController.Move(steer -= 0.5f, 0, -0.9f, 0);
// return;
//}
m_Driving = true;
//m_CarController.Move(0, accel , accel, 0);
}
if (m_Target == null || !m_Driving)
{
// Car should not be moving,
// use handbrake to stop
m_CarController.Move(0, 0f, 0f, 0f);
}
else
{
Vector3 fwd = transform.forward;
if (m_Rigidbody.velocity.magnitude > m_CarController.MaxSpeed * 0.1f)
{
fwd = m_Rigidbody.velocity;
}
float desiredSpeed = m_CarController.MaxSpeed;
// now it's time to decide if we should be slowing down...
switch (m_BrakeCondition)
{
case BrakeCondition.TargetDirectionDifference:
{
// the car will brake according to the upcoming change in direction of the target. Useful for route-based AI, slowing for corners.
// check out the angle of our target compared to the current direction of the car
float approachingCornerAngle = Vector3.Angle(m_Target.forward, fwd);
// also consider the current amount we're turning, multiplied up and then compared in the same way as an upcoming corner angle
float spinningAngle = m_Rigidbody.angularVelocity.magnitude * m_CautiousAngularVelocityFactor;
// if it's different to our current angle, we need to be cautious (i.e. slow down) a certain amount
float cautiousnessRequired = Mathf.InverseLerp(0, m_CautiousMaxAngle,
Mathf.Max(spinningAngle,
approachingCornerAngle));
desiredSpeed = Mathf.Lerp(m_CarController.MaxSpeed, m_CarController.MaxSpeed * m_CautiousSpeedFactor,
cautiousnessRequired);
break;
}
case BrakeCondition.TargetDistance:
{
// the car will brake as it approaches its target, regardless of the target's direction. Useful if you want the car to
// head for a stationary target and come to rest when it arrives there.
// check out the distance to target
Vector3 delta = m_Target.position - transform.position;
float distanceCautiousFactor = Mathf.InverseLerp(m_CautiousMaxDistance, 0, delta.magnitude);
// also consider the current amount we're turning, multiplied up and then compared in the same way as an upcoming corner angle
float spinningAngle = m_Rigidbody.angularVelocity.magnitude * m_CautiousAngularVelocityFactor;
// if it's different to our current angle, we need to be cautious (i.e. slow down) a certain amount
float cautiousnessRequired = Mathf.Max(
Mathf.InverseLerp(0, m_CautiousMaxAngle, spinningAngle), distanceCautiousFactor);
desiredSpeed = Mathf.Lerp(m_CarController.MaxSpeed, m_CarController.MaxSpeed * m_CautiousSpeedFactor,
cautiousnessRequired);
break;
}
case BrakeCondition.NeverBrake:
break;
}
// Evasive action due to collision with other cars:
// our target position starts off as the 'real' target position
//Vector3 offsetTargetPos = m_Target.position;
// if are we currently taking evasive action to prevent being stuck against another car:
if (Time.time < m_AvoidOtherCarTime)
{
// slow down if necessary (if we were behind the other car when collision occured)
desiredSpeed *= m_AvoidOtherCarSlowdown;
// and veer towards the side of our path-to-target that is away from the other car
offsetTargetPos += m_Target.right * m_AvoidPathOffset;
}
else
{
// no need for evasive action, we can just wander across the path-to-target in a random way,
// which can help prevent AI from seeming too uniform and robotic in their driving
offsetTargetPos += m_Target.right *
(Mathf.PerlinNoise(Time.time * m_LateralWanderSpeed, m_RandomPerlin) * 2 - 1) *
m_LateralWanderDistance;
}
// use different sensitivity depending on whether accelerating or braking:
float accelBrakeSensitivity = (desiredSpeed < m_CarController.CurrentSpeed)
? m_BrakeSensitivity
: m_AccelSensitivity;
// decide the actual amount of accel/brake input to achieve desired speed.
accel = Mathf.Clamp((desiredSpeed - m_CarController.CurrentSpeed) * accelBrakeSensitivity, -1, 1);
// add acceleration 'wander', which also prevents AI from seeming too uniform and robotic in their driving
// i.e. increasing the accel wander amount can introduce jostling and bumps between AI cars in a race
accel *= (1 - m_AccelWanderAmount) +
(Mathf.PerlinNoise(Time.time * m_AccelWanderSpeed, m_RandomPerlin) * m_AccelWanderAmount);
// calculate the local-relative position of the target, to steer towards
//Vector3 localTarget = transform.InverseTransformPoint(offsetTargetPos);
// work out the local angle towards the target
float targetAngle = Mathf.Atan2(localTarget.x, localTarget.z) * Mathf.Rad2Deg;
// get the amount of steering needed to aim the car towards the target
steer = Mathf.Clamp(targetAngle * m_SteerSensitivity, -1, 1) * Mathf.Sign(m_CarController.CurrentSpeed);
// feed input to the car controller.
if ((localTarget.magnitude < m_ReachTargetThreshold - 5) || obstracleDetect())
{
if (obstracleIn == 1)
{
steer += 0.9f;
}
else if (obstracleIn == -1)
{
steer -= 0.9f;
}
accel -= 0.7f;
}
m_CarController.Move(steer, accel * 2, accel, 0f);
// if appropriate, stop driving when we're close enough to the target.
//if (m_StopWhenTargetReached && localTarget.magnitude < m_ReachTargetThreshold)
//if ( localTarget.magnitude < m_ReachTargetThreshold)
//{
// //m_Driving = false;
// m_CarController.Move(0, 0, 0, 0.7f);
//}
//else if( (localTarget.magnitude > m_ReachTargetThreshold) && (Vector3.Distance(transform.position, m_Target.position) < 20f) )
//{
// m_CarController.Move(steer, accel * 2, accel, 0f);
//}
}
}
else
{
stopCarAi();
}
}