@Just_ng asked me (@kriblo) for advice on my profile: "Hi... can you help me with this project? I need to put this arrow script ( https://scratch.mit.edu/projects/410681964 ) into my platformer ( https://scratch.mit.edu/projects/390182871 )... and I also need a smooth scrolling for my platformer... can you please help me? Thanks :)"
For the scrolling, I refer to my example project Scrolling Platformer - step 1: https://scratch.mit.edu/projects/382769101/ For the Bow and Arrow, I say this: - The way I see it you will have to disable mobile controls, because you need both keys and mouse to control moving and shooting. - In your Arrow project you use Pen to illustrate aiming. The Pen always appears behind sprites, so this will be difficult to incorporate. - I have made a new sprite (kriblo) in this remix where I try to give an idea of how I might incorporate the Bow and Arrow in your platformer. The calculations for aiming and trajectory is not important in this remix, as you have your own script, I just put something in so you could test it. (I have made no other changes to your project).