To place a floor, you have to drag the top right floor.(in the menu) Take the floor from the outermost end (towards you) You can also drag and move the ball or the cube
By Ancona Simone This engine is free! You can use my codes But please, mention me in your projects ---------2.1.0 UPDATE!---------- - Friction bug: fixed - Graphics bugs: fixed - New shape: cube - New setting: trajectory