/// <summary>
///
/// </summary>
/// <returns></returns>
private bool DetectPlayer()
{
// Check if the player is within detection range, and if so, attempt
// detection.
if (m_playerDistance < MaxDetectionDistance)
{
// Calculate the chance of detection based on the range to
// the player.
float playerDetectionChance = LinearTransform(m_playerDistance, 0,
MaxDetectionDistance, MaxDetectionChance, 0);
if (Random.value < playerDetectionChance)
{
if (m_seeker.IsDone())
{
// If we have detected the player, attempt to get a path.
Path path = m_seeker.StartPath(transform.position,
Player.transform.position);
if (!path.error)
{
// Reset pathfinding variables.
m_lastPathfindingUpdate = 0f;
m_currentPath = path;
m_currentWaypoint = 0;
// Change the change to skeleton state and update animation
// variables.
m_mode = ZombieMode.Hunting;
m_animator.SetFloat("Speed", 1);
return true;
}
}
}
}
return false;
}
private void UpdatePatrolling()
{
WalkSpeed = 25;
if (DetectPlayer()) return;
// Test if we have just reached the end of the path.
if (m_currentWaypoint >= m_currentPath.vectorPath.Count)
{
m_currentPath = null;
m_currentWaypoint = -1;
m_animator.SetFloat("Speed", 0);
m_mode = ZombieMode.Idle;
return;
}
else m_animator.SetFloat("Speed", 25);
if (m_currentWaypoint >= 0 &&
m_currentWaypoint < m_currentPath.vectorPath.Count - 1) Move();
}
private void UpdateHunting()
{
WalkSpeed = 50;
if (m_playerDistance < 2.0)
{
m_animator.SetFloat("Speed", 0f);
m_mode = ZombieMode.Idle;
return;
}
// Check if we have reached the end of the current path.
if (m_currentPath == null || m_currentWaypoint >= m_currentPath.vectorPath.Count)
{
if (m_seeker.IsDone())
{
// If so, find a new path to the player.
Path path = m_seeker.StartPath(transform.position, Player.transform.position);
if (!path.error)
{
m_lastPathfindingUpdate = 0f;
m_lastPlayerPos = Player.transform.position;
m_currentPath = path;
m_currentWaypoint = 0;
}
}
}
// If the player has moved significantly since last pathfinding and more
// than the designated pathfinding interval has passed...
m_lastPathfindingUpdate += Time.deltaTime;
if (m_lastPathfindingUpdate > HuntingPathfindingInterval)
{
if (m_seeker.IsDone())
{
// Re-path to the player and reset pathfinding variables.
Path path = m_seeker.StartPath(transform.position, Player.transform.position);
if (!path.error)
{
m_lastPathfindingUpdate = 0f;
m_lastPlayerPos = Player.transform.position;
m_currentPath = path;
m_currentWaypoint = 0;
}
}
}
if (m_currentWaypoint >= 0 &&
m_currentWaypoint < m_currentPath.vectorPath.Count - 1) Move();
}
private void UpdateIdle()
{
if (m_playerDetected)
{
WalkSpeed = 0;
// If within striking range attack the player at random intervals. If
// not, attempt to get a path to the player and resume hunting.
if (m_playerDistance < 3f)
{
Vector3 displacement = Player.transform.position - transform.position;
float angle = Vector3.Angle(transform.forward, displacement);
if (Random.value < 0.05f && Mathf.Abs(angle) < 10)
{
float r = Random.value;
if (r < 1)
{
m_animator.SetBool("Attack", true);
m_mode = ZombieMode.Attacking;
}
return;
}
// Reorientate the controller to face towards the player.
Vector3 direction = Player.transform.position - transform.position;
direction.Normalize();
transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(direction), 3.5f * Time.deltaTime);
}
else
{
if (m_seeker.IsDone())
{
Path path = m_seeker.StartPath(transform.position,
Player.transform.position);
if (!path.error)
{
// Reset pathfinding variables.
m_lastPathfindingUpdate = 0f;
m_currentPath = path;
m_currentWaypoint = 0;
m_mode = ZombieMode.Hunting;
m_animator.SetFloat("Speed", 1);
}
}
}
}
else
{
m_playerDetected = DetectPlayer();
if (m_playerDetected) return;
// Check if the controller should transition from idle to patrolling.
if (Random.value < PatrolChance)
{
if (m_seeker.IsDone())
{
// Get a point within a radius of PatrolRadius units.
Vector2 randomPoint = Random.insideUnitCircle * PatrolRadius;
Vector3 end = transform.position;
end.x += randomPoint.x;
end.y = 0.5f;
end.z += randomPoint.y;
Path path = m_seeker.StartPath(transform.position, end);
if (!path.error)
{
m_lastPathfindingUpdate = 0f;
m_currentPath = path;
m_currentWaypoint = 0;
m_mode = ZombieMode.Patrolling;
m_animator.SetFloat("Speed", 0.5f);
return;
}
}
}
}
}
private void UpdateAttacking()
{
if (m_attackStart)
{
m_attackTime = 0;
m_attackStart = false;
}
m_attackTime += Time.deltaTime;
if (m_attackTime > 2.76)
{
m_attackTime = 0;
m_attackStart = true;
m_currentPath = null;
m_currentWaypoint = -1;
m_animator.SetBool("Attack", false);
m_mode = ZombieMode.Idle;
}
}
void Update()
{
// Die if health less than 0.
if (CurrentHealth < 0)
{
m_animator.SetBool("Die", true);
m_mode = ZombieMode.Dead;
GameObject.Destroy(this.gameObject, 5);
}
// Cache distance from the controller to the player.
m_playerDistance = Vector3.Distance(transform.position,
Player.transform.position);
if (m_mode == ZombieMode.Idle)
{
UpdateIdle();
}
else if (m_mode == ZombieMode.Patrolling)
{
UpdatePatrolling();
}
else if (m_mode == ZombieMode.Hunting)
{
UpdateHunting();
}
else if (m_mode == ZombieMode.Attacking)
{
UpdateAttacking();
}
else if (m_mode == ZombieMode.Dead)
{
}
}
void SetZeroLegMode()
{
_mode = ZombieMode.ZERO_LEGS;
UpdateParametersByMode();
}
void SetOneLegMode()
{
_mode = ZombieMode.ONE_LEGS;
UpdateParametersByMode();
}
void SetTwoLegMode()
{
_mode = ZombieMode.TWO_LEGS;
UpdateParametersByMode();
}
