Aww, thank you for your kind words! =) I really appreciate it!
As for what you've noticed, do you remember which of the meters? And to what value? Normally it should be reduced until zero, which can then influence the health meter (e.g. zero fullness and zero affection inflict on health).
As for your question, currently the ball shows up randomly. My intention was that the creeper basically decides when it wants to be just cuddled or when it wants to play with the ball. I made it like this because sometimes I don't want to use the ball because petting is quicker, but that feels like not really caring, so I *MUST* play with my creeper. Haha, sorry hard to explain, but I hope you get what I mean. xD