Algodoo

Complete tutorial is available on YouTube channel "Roshan Ali Academy" Playlist "Algodoo Tutorials"

Good tutorial except x = 0 should be scene.my.x := 0 at 3:11 in your video. Because you set x=0 in the console, the present scene works on your PC but not for anybody else who downloads this scene. Other users who read this comment should comment whether this scene works for them or not.

P.S. This scene could be much smaller if you converted the .png to .jpg.

P.P.S. Your How to Build an Opening & Closing Door | Tutorial 26 video can be displayed in the description section of this page. See the Help link to the left of the "Add reply" button.

The scene did not work for me until I corrected the code as suggested by s_noonan. My device is an older PC running Windows-10.

I have one more suggestion to add: The door opens and closes with a "bounce" that no one would want a door to do in real life. You can eliminate the bounce by setting the "Restitution" value to zero on both green rectangles and on the door (3 places total). The door then will no longer bounce when opening or closing it.