Your question is vague, but I’ll take a stab at it:
You make a jump with lerp. Then, separately you make a wall jump that uses the normal jump, or a specialized wall jump that’s also lerp’d.
how to make a jump with lerp ?
most of videos on youtube don’t explain a wall jump with jumping animation and wall jump delay
kareem_farrag | 2023-02-09 18:15
first result when googling “Godot wall jump”. I think he uses a raycast to check for walls, but the rest of it is general enough to fit your use-case as far as I can tell.
What I mean by this is to apply your interpolation separately from the action. I use a “gravity” which applies delta time so my jump is just changing the y velocity, which calculates to a different value each frame.