> For the complete documentation index, see [llms.txt](https://patpat.gitbook.io/penguin-action-toolkit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://patpat.gitbook.io/penguin-action-toolkit/tutorial/effect/apply-effects.md). # Apply Effects There's several way to apply Effects a Character: ### Hitbox & Hurtbox

When hitbox is activated, if collided with hurtbox, it will send all effect it holds to the hurtbox's character if that's a successful hit. Hurtbox can be invincible if the character holds it's I-Frame tag. Also, a Hitbox will only hit a Hurtbox once before reactivating. Although we used raycst, this hit detection still relies on box collision a lot, we recommend you give all Hurtbox a rigid body to enable the collision. We generally recommend you to control hitbox with *Attack with Hitbox Mod* ### Add Effect Mod

This add the effects it holds to character ### Write Your Own Code Code with, there's two ways to apply an effect to a character: **Add Effect:**

This simply add the effect to a character. Good for single character cases. **Send Effect Package:**

This call will let one character send effects to another character, and this action will be broadcasted to action events. Hitbox and Hurtbox are actually using this to deal damages. **This call will also send a duplicate of the effect instead of the originally one to prevent reference issue.** You shall use this method to achieve the between character interaction.