Take a cube and fit it through a square hole in the wall that's just slightly bigger than the cube.Rotate the cube 45 degrees along the z-axis.Try to fit the cube through the hole. The cube will not fit.
If you're wondering why it's fat.Our player collision boxes don't rotate. And if you:tldr;It needs to be fat if you want to fit through it.
nice
ecin
maybe you could keep the collision the same it is now, but make the door LOOK thinner.
Actually, this is a good idea.