GameMaker tutorial / lesson with completed project files at http://www.gameprogrammingcourse.com in the RESOURCES section.
How to code gravity from many objects pulling on player ship in a simple space game tutorial. Part 05 of the program series.
Check out hundreds of other GameMaker tutorials and lessons at GameProgrammingCourse.com All these gamemaker tutorials will work with Gamemaker Studio GMS or Gamemaker Studio 2 GMS.
Go to the Resource Page of http://www.gameprogrammingcourse.com to download the Project Files for these tutorials!