What do you mean Pulp wasn't made for side-scrolling platformers?
Scrolling Platformer Demo.zip (2.9 KB)
This was fun to work out! I tried to keep the code to a minimum and really lean on what Pulp already offers. It's certainly no Mario (shamelessly stolen level layout for this demo aside) but it's not unplayable!
The trick to "screen-scrolling" is in Pulp's follow config and using edge exits set several tiles into the screen to sew together multiple rooms with overlapping layouts. Then I simply used crop to add the black bars on either side of the screen to hide that room switching from sight! If you load up the json and comment out the crop command in the game script it makes the whole thing very obvious (and is actually a kind of cool looking effect).
The platforming is very rough-and-ready as the jump curve is less of a curve and more of a triangle, but hey the player goes up-and-down and it's not awful (ymmv!).
Unfortunately it seems the player confirm and cancel events for pressing the A and B buttons don't fire repeatedly when held no matter the Pulp config, so my idea for varying jump height by how long the button was held was scrapped. Instead I made both A and B do a jump, but the B jump is shorter!