// Start is called before the first frame update
void Start()
{
currentKeyNode = KeyNodes[Random.Range(0, GameManager.instance.KeysRequired)];
path = currentKeyNode;
transform.position = path.transform.position;
rigidbody = GetComponent <Rigidbody>();
meshAgent = GetComponent <NavMeshAgent>();
moveSpeed = 5;
currentState = enemyAiState.PATROL;
FindAudioManager();
meshAgent.enabled = true;
meshAgent.SetDestination(path.transform.position);
//StartCoroutine("Step");
}
// Update is called once per frame
protected virtual void Update()
{
if (GameManager.instance.CurrentState == gameState.PAUSE)
{
meshAgent.enabled = false;
return;
}
if (meshAgent.enabled == false)
{
meshAgent.enabled = true;
meshAgent.SetDestination(currentKeyNode.position);
}
if (capturedEnemy)
{
return;
}
//Chasing an invisible player takes priority over everything else so this line gets to be outside the state machine
//but there probably shouldn't be too much else out here
detectPlayerResults = DetectPlayer();
if (detectPlayerResults)
{
// If the enemy has found the player before entering chase state, start playing the chase music
if (!foundPlayer)
{
audioManager.PlayChase();
}
// enemy has found player
foundPlayer = true;
currentState = enemyAiState.CHASE;
}
switch (currentState)
{
case enemyAiState.PATROL:
//The enemy normally walks around from node to node all over the map, looking for evidence
//The enemy starts in this state and comes back to it after giving up after a certain amount of time spent in INVESTIGATE
Patrol();
break;
case enemyAiState.CHASE:
//The enemy enters this state if they actively see the player during any of the other states
//They pursue the player
//If I lose sight of the player then this happens
if (!detectPlayerResults && Vector3.Distance(transform.position, meshAgent.destination) <= 1)
{
// If the enemy had found the player before going into investigate, stop playing hte chase music
if (foundPlayer)
{
audioManager.StopChase();
}
// the enemy has not found the player
foundPlayer = false;
currentState = enemyAiState.INVESTIGATE;
currentKeyNode = path;
path = FindPath();
//Find the closest Node to where the player was and look around there
meshAgent.SetDestination(path.transform.position);
//probably need some way to mark a node as "evidence" should be whatever node the player was closest too when they were last seen
}
break;
case enemyAiState.INVESTIGATE:
//The enemy enters this state when they finish ALERTED
//They will basically do the same thing they do in patrol, but about a small collection of nodes (which the one ALERTED took them too belongs too)
//instead of all nodes on the map
Patrol();
break;
}
}
protected void EndInvestigation()
{
currentState = enemyAiState.PATROL;
path = currentKeyNode;
timer = 0;
}
protected bool DetectPlayer()
{
//Calculating the player mask for our player
int layerMask = 1 << 8;
layerMask = layerMask | 1 << 9;
//Projecting our rays
for (int i = 0; i < NUM_OF_RAYS; i++)
{
//Calculating direction of the ray
Vector3 rayDir = new Vector3(Mathf.Sin((transform.rotation.eulerAngles.y + (((float)i / NUM_OF_RAYS) * CONE_DEGREES) - CONE_DEGREES / 2) * Mathf.Deg2Rad), .05f
, Mathf.Cos((transform.rotation.eulerAngles.y + (((float)i / NUM_OF_RAYS) * CONE_DEGREES) - CONE_DEGREES / 2) * Mathf.Deg2Rad));
RaycastHit hit;
Player potentialPlayer;
//Shooting out a raycast in that direction
bool detected = Physics.Raycast(new Vector3(transform.position.x, transform.position.y + 0.2f, transform.position.z), rayDir, out hit, VISION_DISTANCE, layerMask);
if (detected)
{
if (hit.collider.gameObject.TryGetComponent <Player>(out potentialPlayer))
{
//SEEK PLAYER HIT
//If we find the player we go into chase mode and adjust our speed
meshAgent.SetDestination(potentialPlayer.transform.position);
meshAgent.speed = Mathf.Lerp(meshAgent.speed, MAX_SPEED, .005f);
currentState = enemyAiState.CHASE;
return(true);
}
}
}
for (int i = 0; i < NUM_OF_RAYS; i++)
{
//Calculating direction of the ray
Vector3 rayDir = new Vector3(Mathf.Sin((-transform.rotation.eulerAngles.y + (((float)i / NUM_OF_RAYS) * CONE_DEGREES) - CONE_DEGREES / 2) * Mathf.Deg2Rad), .05f
, Mathf.Cos((-transform.rotation.eulerAngles.y + (((float)i / NUM_OF_RAYS) * CONE_DEGREES) - CONE_DEGREES / 2) * Mathf.Deg2Rad));
RaycastHit hit;
Player potentialPlayer;
//Shooting out a raycast in that direction
bool detected = Physics.Raycast(new Vector3(transform.position.x, transform.position.y + 0.2f, transform.position.z), rayDir, out hit, VISION_DISTANCE / 2, layerMask);
if (detected)
{
if (hit.collider.gameObject.TryGetComponent <Player>(out potentialPlayer))
{
//SEEK PLAYER HIT
//If we find the player we go into chase mode and adjust our speed
meshAgent.SetDestination(potentialPlayer.transform.position);
meshAgent.speed = Mathf.Lerp(meshAgent.speed, MAX_SPEED, .005f);
currentState = enemyAiState.CHASE;
return(true);
}
}
}
return(false);
}
