How can I check if my Player leaves a Sphere?

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Hello there. I am currently working on my first unity-project (3D). So far i have a working CharacterController and an Enemie which is Patroling if the Player is outside of a given sphere around the enemie. If the Player enters the Sphere, the enemie starts chasing the player until he leaves the sphere again. All that works perfectly fine, but i dont like that the enemie starts patroling right away after the player leaves the sphere. I want it to stand still for a moment (and later animate to look around). To achieve that, i have to chech if and when the player leaves the sphere. I obviously already have a bool which checks if the player is inside the sphere or outside, but i have no idea how to check when the bool turns from true to false again.

Im looking forward for a few helpfull answers

best regards, Sakul156

Thanks in Advance! :)

Answer 1

Best Answer

Answer by Earthshine · May 20, 2021 at 08:01 PM

You just need a flag. Let it be bool isChasingPlayer for Enemy chasing Player.

 If (Player is inside the sphere and isChasingPlayer is false) 
 { isChasingPlayer becomes true;
   Enemy stops all coroutines;
   and starts the chasing coroutine }
 
 If (Player is outside the sphere and isChasingPlayer is true) 
 { isChasingPlayer becomes false;
   Enemy stops all coroutines;
   and starts looking around coroutine }

When looking around coroutine ends, Enemy restarts the patrolling coroutine.

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Sakul156 · May 23, 2021 at 02:49 PM 0

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Thank you, i used your "Code" for inspiration and managed to making it work. Thanks a lot for all the help, guys!

best regards

Sakul156

Earthshine Sakul156 · May 24, 2021 at 01:54 PM 0

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It was kinda confusing for me to read someone else's code when I had started learning unity, so I decided to just convey the logic instead. I hope reading this 'code' wasn't too much of a headache for you.

Answer 2

Answer by amiel_ace · May 20, 2021 at 02:20 PM

You should look at OnTriggerExit and OnTriggerEnter, from there you can set your bool

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Sakul156 · May 20, 2021 at 02:26 PM 0

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hay, thanks for the fast answer. I started watching a video about those triggers and he said that i need to have a rigidbody. The problem is that i dont use a rigidbody in the project.

amiel_ace Sakul156 · May 20, 2021 at 02:36 PM 0

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Well, I must say, that using a rigidbody is so much easier for that purpose. But if you're really insisting in not using a rigidbody, What you can do is use and provide Physics.SphereCast, and place that in a coroutine for manually a constant checking that Physics.spherecast.

Sakul156 amiel_ace · May 20, 2021 at 02:48 PM 0

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Thats actually what im doing:

PlayerInSightRange = Physics.CheckSphere(transform.position, SightRange, LayerMaskPlayer);

But the problem is that i dont know how to check if i leave the sphere. I mean yeah of course the bool turns to false again but i dont know how to include that into a function.

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How can I check if my Player leaves a Sphere?

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