Enemy detects when a player enters the field of view

[neryt]

Hi, I'm trying to do to the enemy detects when a player enters the field of view in which is aimed. Below a picture of the explanation exactly what I mean.

Thank you for your help

 

[Bingdom]

Go to this topic: https://forum.yoyogames.com/index.php?threads/trouble-with-line-of-sight-code.7545/

 

[neryt]

nope this is not what i mean
but thanks for this any way

 

[NightFrost]

It seems to me the other topic is pretty much what you want. To measure distance between the enemy and the player, use point_distance. If the distance is actionable, check player direction using point_direction and compare it to enemy facing with angle_difference. If the result is within enemy's field of vision angle, the player has been detected.

 

[LazyEpic]

nope this is not what i mean
but thanks for this any way

If not that then what exactly do you mean because as NightFrost says the thread above is exactly about that? But if you are uncomfortable with maths you could use a sprite of a cone linked to your enemy and use collisions, however this is very simplistic, problematic and wont really be scalable or efficient.

 

[anomalous]

You can also throw a collision_line in there from the foe to the player, to ensure you have unobstructed LOS.