I hate to admit, but I did rip the art from an online sprite database. Being I little concerned with infringing on copyrights, I did look up the maker of the game, and the Japanese business no longer exists. I was hoping to get in contact with someone, just to ask if it was OK to use these images.
As for the uphill, downhill challenge, I’ve been reading around on different approaches. I could still rely on the idea of the player overlapping the ground, but unfortunately I don’t know where the overlap occurs. I could just keep positioning the player to be a few pixels above the ground, until it no longer overlaps. Also I need to move the ground sprites at a certain x,y speed that matches the vx of the player.
This type of programming would certainly make for an interesting stream for the team.
Weststone had made the original, but also allowed other companies to make their own version as long as it did not contain same title. Hudson Soft had indeed made their own with version of Adventure Island.
@richard
Thanks for the tip, I will have a look at how that is done; that is if I understand it
I know it is not perfect, as the sprite bounces up and down on certain parts of the slope, but good enough for me (and frankly, also for my little knowledge of trigonometry ). I am happy with the result and also how the sprites move at the correct speeds.
I’ve been working on this too. My son asked to design a Captain Toad game on MakeCode. When he mentioned that the player can’t jump, I told him it will be a challenge. I’m trying to teach him programming and I want to stay out of JS and focus only on blocks. He’s been debugging and learning when you try something it doesn’t always work and you keep trying. Right now our slope algorithm is acting like a conveyor belt that makes the player move faster. The other algorithm we are working on is climbing ladders.
I’m very curios to all ideas where a player can walk on a slope, so I can figure which works best. I’d like to see what you are working on when you get so far.
I like how you can walk under objects, and also climb over them; well done.
). I am happy with the result and also how the sprites move at the correct speeds. 
