I'm happy to see you took my suggestion to make it easier to draw a line from off of a cube. However, the lack of a line tool makes it difficult to draw straight lines. Add to the fact that it's clearly frame dependent, meaning if the mouse is moving too quick, drawing from off of the cube will start it further in than desired, it can be difficult to create the lines you want as opposed to merely solving the puzzle.
Viewing post in Cubenomics - A Cube and Ball Puzzle Game jam comments
I'll definitely spend most of my time on continuing to make drawing solutions easier for now. I like the idea of a line editing tool so I'll be working on that for sure. I'm currently thinking of a line move tool (Move the whole line around) and a point edit tool (A mode that will let you move around and delete individual points that make up the line). Not sure what to do about the frame dependency issue but I'll try to hack a workaround together to make sure that the line starts on the edge of the cube if you start off of it. Thanks so much for playing my game again your feedback really helps me out!
For the line starting off the cube issue, you could easily start watching the input when the player presses the mouse button, and then watch the distance between the coordinates one frame to the next, using that. Also, I dunno if I missed keyboard controls, but lacking a button to swap between draw and erase on the fly was annoying. I didn't like having to click the button at the top left of the screen.
There was its 'X'. But it's only mentioned on the itch page and never in the game, nor is there anyway to change the controls in game. Its something I need to add into the tutorial or somehow let the player know, but all the buttons on the top left have a key assigned to them. For the line I don't want a line appearing off the cube so I'm thinking of adding a point before the first one gets added where the edge of the cube and the path you took from off the cube to the first detected point on the cube intersect. The only issue is I haven't figured out how to determine the position of the edge of the cube especially since you can now draw while the cube is rotated but nothing a few google searches and banging your head against a keyboard can't solve