There are a handful of events that we need to handle: the player jumps out of the screen, a new platform or enemy is added, a platform or enemy is removed, and a player dies. The player's character can die in two ways: when it collides with the enemy, which we already implemented, and when it falls off the screen. We also want to reward the player with a score when he or she reaches a new height.
There is one more special event we need to cover. When the player's character exits the screen on the left or right side, we want it to reappear on the other side. We want to create a wrapped world. Same with platforms and later enemies when we make them move.
However, in our case, this is not exactly what we want. We need the camera to follow only the upward movement of the...