Yoshi, the problem is that I spent 8 years on this game. I feel like I can't look at this anymore.
I am going to build a Zelda engine. I will make changeable keyboard controls the first feature I will code for gameplay.
As for the bilinear filter, I used a very old version of Direct X to create this game. I don't know how to configure the filter.

it is good for 2006 gamemaker game, but there are minor problems like sometimes when you jump up to a ground or land at the edge of the pipe< you might get stuck for few seconds, and for most levels you can noclip through the barrier with the star without pushing the yellow button, and other problems are just not so much problem and no missing textures or anything, it is just a very fine gamemaker game from 2006