How do I set a hitbox

Hi, I have a weird situation with hit box, when I want to move my character, he move correctly, but when I want to shot, he go into the floor >.<

and with the platform...

Are you sure the collision box and the origin are equally set in all the animations ?

If the collision box is smaller in the "shooting" animation, your character will sink into the floor like that to a degree.

If the origin is different, the character could also "teleport" a little like that.

origin yes, but what do you mean when you speak about collision box?

Right Click on your sprite >> "Edit Animations"

Then, on the vertical menu on the left of your sprite, click on the "Set Collision Polygon" button. This is how you modify your hitbox. Be sure it is the same for every frame in your case

Here is a picture to help you find the button : hpics.li/52126f4

oooooh, I think it was for create polygone !

thank you a lot, you resolved my problem ^^