private void Update()
{
// Age over time
_age = Mathf.Clamp01(_age + Time.deltaTime * kAgeRate);
CritterConstants.CreatureSize ageNewSize = CritterConstants.GetCreatureSizeAtAge(_age);
if (ageNewSize != _size)
{
SetSize(ageNewSize, animate: true);
}
// Gain vigor, if we're old enough
if ((int)_size >= (int)kMinVigorSize)
{
_vigorLevel = Mathf.Clamp01(_vigorLevel + Time.deltaTime * kVigorGainRate);
_vigorUI.FillPercent = _vigorLevel;
}
// Change direction sometimes
_changeDirectionTimer -= Time.deltaTime;
if (_changeDirectionTimer < 0)
{
_changeDirectionTimer = _changeDirTimeRange.RandomValue;
_desiredDirection = Random.onUnitSphere.WithY(0).normalized;
_isMoving = Random.value > _moveChance;
if (_animator != null)
{
_animator.SetBool(kAnimParamIsWalking, _isMoving);
}
}
// Slowly change move direction towards current desired direction / rotate to face move direction
_moveDirection = Mathfx.Damp(_moveDirection, _desiredDirection, 0.5f, Time.deltaTime * _turnSpeed).WithY(0);
if (_moveDirection.magnitude > 0.1f)
{
Quaternion desiredRot = Quaternion.LookRotation(_moveDirection, Vector3.up);
_rigidBody.rotation = Mathfx.Damp(_rigidBody.rotation, desiredRot, 0.5f, Time.deltaTime * _turnSpeed);
}
// Occaisonally raycast for obstacles
_obstacleRaycastTimer -= Time.deltaTime;
if (_obstacleRaycastTimer < 0)
{
_obstacleRaycastTimer = 2;
RaycastHit hitInfo;
if (Physics.Raycast(transform.position, _desiredDirection, out hitInfo, _obstacleAvoidDistance, _obstacleMask))
{
_desiredDirection = Quaternion.Euler(0, 90, 0) * _desiredDirection;
_changeDirectionTimer = _changeDirTimeRange.MaxValue;
Debug.DrawLine(transform.position, hitInfo.point, Color.red, 1.0f);
}
else
{
Debug.DrawRay(transform.position, _desiredDirection * _obstacleAvoidDistance, Color.white, 0.5f);
}
}
// If we have full vigor, look for the closest mate and go get em
if (IsReadyForLove)
{
if (_mateSearchIndex >= _instances.Count)
{
_mateSearchIndex = 0;
}
// Find nearest available mate lazily over time
if (_mateSearchIndex < _instances.Count)
{
CritterController potentialMate = _instances[_mateSearchIndex];
if (potentialMate != this && potentialMate.IsReadyForLove)
{
float distToMate = Vector3.Distance(transform.position, potentialMate.transform.position);
float distToNearestMate = _nearestMate != null?Vector3.Distance(transform.position, _nearestMate.transform.position) : Mathf.Infinity;
if (distToMate < distToNearestMate)
{
_nearestMate = potentialMate;
}
}
++_mateSearchIndex;
}
// Move towards current desired mate
if (_nearestMate != null)
{
Vector3 toMateVec = _nearestMate.transform.position - transform.position;
_changeDirectionTimer = 1;
_isMoving = true;
_desiredDirection = toMateVec.normalized;
// If someone gets to our potential mate first we have to try for someone else
if (!_nearestMate.IsReadyForLove)
{
_nearestMate = null;
return;
}
// If we get close enough, begin the process
float distToMate = toMateVec.magnitude;
if (distToMate < kMinMateDistance)
{
MateWith(_nearestMate, isLeader: true);
}
}
}
Debug.DrawRay(transform.position, _desiredDirection, Color.blue);
}
public void SetAge(float newAge, bool animate)
{
_age = newAge;
SetSize(CritterConstants.GetCreatureSizeAtAge(_age), animate);
}