public override void Update()
{
// check if AI agent has arrived to a waypoint
if (agent.remainingDistance < 1)
{
// check if the npc has finished walking through all waypoints
if (currentIndex >= GameEnvironment.Singleton.Checkpoints.Count - 1)
{
currentIndex = 0; // Reset the patrol path
}
else
{
currentIndex++; // set next waypoint as destination
}
// move the npc agent to waypoint at the current index count
agent.SetDestination(GameEnvironment.Singleton.Checkpoints[currentIndex].transform.position);
}
// if AI saw the player, then exit patrol state and start chasing
if (CanSeePlayer())
{
nextState = new StatePursue(npc, agent, anim, player);
stage = EVENT.EXIT;
}
}
public override void Update()
{
// if AI saw the player, then exit idle state and start chasing
if (CanSeePlayer())
{
nextState = new StatePursue(npc, agent, anim, player);
stage = EVENT.EXIT;
}
// Set a check to exit the Update stage and go to next one (Exit), otherwise will be stuck in Update forever
// This condition creates 10% chance to exit Update stage
else if (Random.Range(0, 100) < 10)
{
nextState = new StatePatrol(npc, agent, anim, player);
stage = EVENT.EXIT;
}
}
public override void Update()
{
// get the directional vector between AI and player
Vector3 direction = player.position - npc.transform.position;
// remove vertical component value to avoid tilting AI character
direction.y = 0;
// rotate AI character to face player while shooting
npc.transform.rotation = Quaternion.Slerp(npc.transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime);
// if player is out of AI's attack range but AI can still see them, then move to chasing state
if (!CanAttackPlayer() && CanSeePlayer())
{
nextState = new StatePursue(npc, agent, anim, player);
stage = EVENT.EXIT;
}
// if AI lost sight of the player, then exit state and go idle
else if (!CanSeePlayer())
{
nextState = new StateIdle(npc, agent, anim, player);
stage = EVENT.EXIT;
}
}