> For the complete documentation index, see [llms.txt](https://docs.gercstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gercstudio.com/enemies/ai-controller/detection-parameters.md).
# Detection Parameters
A detection type is how the enemy will notice the players. You can set different types or all together.
Each detection type has the **Detection** **Sensitivity** value - it means how quickly opponents will notice the characters.
### Vision
The vision is divided into 2 parts - **central vision** and **peripheral**. During the game, if a player is in sight, the enemy will see him. And depending on the **AI behavior**, the enemy will immediately attack the player or start looking for him.
Here you'll find more info about the **AI behavior**:
{% content-ref url="/pages/-LzriEvS7qy-m7LDNp0U" %}
[In-game Behaviour](/enemies/ai-controller/behavior.md)
{% endcontent-ref %}
### Hearing
All characters have a noise radius, if the enemy is in that area and there are no walls between them, then he hears the character.
{% content-ref url="/pages/-LzsVnbJsS\_zhkpGiKRf" %}
[Noise](/characters/controller/noise.md)
{% endcontent-ref %}
### Close Range
If a player comes close to the enemy, he detects him.
