Check if player is in enemys fov?

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Hey there, i'd like to let my enemy start chasing the player when he is in his fov (~180°). The enemy is flying btw.

I read about using Physics.OverlapSphere

Anyone got a solution for this? I don't want to use triggers because it really annoying adding all those triggers to my different kind of enemies.

My idea is making an 180° raycast on the ground (from the position of the enemy) and check if the player got hitted too! If true the enemy should directly face the player and send out a standard raycast to check if there is an object between both (the player is hidden).

But how to make a 180° hit check?

Greets

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Answer by ThisGuyThatsHere · Feb 23, 2017 at 10:27 PM

I would just get the vector from enemy's position to player's position (eV - pV, or reverse, always getting confused there) and then check angle: Vector3.Angle(deltaV, enemy.transform.forward);

And that's it, you've got the angle from enemy's view to perfect view at player.

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Bunny83 · Feb 24, 2017 at 03:29 AM 3

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It's reverse ^^. A vector is like an arrow. You always do "Head $$anonymous$$us Tail" or "To $$anonymous$$us From". Since you want the vector from your enemy to your player you have to do "pV - eV".

JannickL · Feb 24, 2017 at 08:24 AM 2

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Yeah it's reverse. Vector3.angle works perfectly! Thank you :)

 Vector3 targetDir = player.position - transform.position;
 float angleToPlayer = (Vector3.Angle(targetDir, transform.forward));
 
 if (angleToPlayer >= -90 && angleToPlayer <= 90) // 180° FOV
       Debug.Log("Player in sight!");

Zitronekoma30 JannickL · Dec 23, 2019 at 08:06 AM 0

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idk why but this exact method doesn't work for me, I even copied your code here but it still won't work

Check if player is in enemys fov?

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