// Update is called once per frame - NOTE: shooting timing should probably be done in fixed update, so that gun firing is not FPS dependent.. But oh well handle that shit when you do it properly.
void Update()
{
// If we are 'reacting', that means that we just spotted a new target. After 'reaction time' has elapsed, the newTarget will become the current target, and the 'newTarget' becomes null.
if (reacting && Time.time >= nextReactTime)
{
//REACT!
reacting = false;
currentTarget = newTarget;
newTarget = null;
// Invoke the target engaged event!
if (currentTarget != null)
{
EnemyEngagedEvent?.Invoke(this, currentTarget);
}
// If the target is further away than the stand still threshold, then we should stop moving to aim carefully!
prevTargetDistance = Vector3.Distance(transform.position, currentTarget.collider.transform.position);
if (prevTargetDistance > standStillThreshold)
{
agent.isStopped = true; // Pause the agent's path.
}
}
// If we have a target, then rather than just walking around, we should lookat, and shoot at, our target! If the target info contains a null reference we assume our target was destroyed.
if (currentTarget != null)
{
// Check if the target has been killed. If so, reset the current target.
if (!TargetStillAlive(currentTarget))
{
currentTarget = null;
}
// We have a target, and that target is still alive! Let's continue our logic.
else
{
AimTowardsTarget(currentTarget);
// If the target was previously inside our distance threshold, and just moved outside of it this tick, then we should stop moving and aim carefully.
float currDist = Vector3.Distance(transform.position, currentTarget.collider.transform.position);
if (prevTargetDistance <= standStillThreshold && currDist > standStillThreshold)
{
agent.isStopped = true; // Pause the agent's path.
}
else if (currDist < standStillThreshold)
{
agent.isStopped = false; // Resume walking if the target get's too close!
}
AttemptToShoot(currentTarget);
prevTargetDistance = currDist;
}
}
else
{
agent.isStopped = false; // Resume walking if there is no target to worry about!
AimTowardsWalkDirection(); // Turn the body back in the direction of the nav agent's facing direction!
}
}
// This function is the Event handler we register to receive updates from the Combat Ai. It is called when the combat ai decides to engage a particular enemy.
private void HandleEnemyEngagedEvent(object sender, TargetInformation enemy)
{
if (!enemy.IsCharacter)
{
return;
}
if (!enemiesAwareOf.ContainsKey(enemy.character))
{
enemiesAwareOf.Add(enemy.character, AwarenessStates.EngagedWith);
EnemyEngagedEvent?.Invoke(this, enemy.character);
}
else if (enemiesAwareOf[enemy.character] != AwarenessStates.EngagedWith)
{
enemiesAwareOf[enemy.character] = AwarenessStates.EngagedWith;
EnemyEngagedEvent?.Invoke(this, enemy.character);
}
else
{
// Do nothing. Our internal state seems to think we are already engaging this target. Why are we recieving this event.. ? (Check for timing bugs?)
}
}
