I'm not sure if this is a new form of state machine. If you look at the code here you'll see that the select state uses some functions from the parameter state

I'm not sure if this is a new form of state machine. If you look at the code here you'll see that the select state uses some functions from the parameter state. https://github.com/sdzx-1/ray-game/blob/master/src/select.zig#L47 https://github.com/sdzx-1/ray-game/blob/master/src/select.zi... So you can see that the select state itself is incomplete, and the parameter state completes it. It doesn't seem to be any of the 3 described above. Perhaps it is reasonable to call it semantic composition.