My Honours Project was built with SFML and created around the idea of an AI opponent scaling its abilities to that of the current player; the idea being that this would allow players of all skill levels to play the game and experience the same amount of challenge.
In the end the project was not a success, the AI did not adapt to the skill of the player, however, the AI controlled character did react to the players behavior, just not in a way that affected the difficulty of the game.
In this video the red player is human controlled, while the blue is controlled by the adaptive AI.
Download Link: Executable, Source
Benjamin Doherty 