I feel stupid, I could swear I saw the touch->double tap trigger at one point in time, shortly after it was introduced in an update. Now when I have occasion to use it, it isn't in the list of available conditions for the touch object. Even the manual lists it. I have Personal license C2 through steam, and it is currently version 173, 64bit. Am I doing something wrong? Did I go selectively blind?
Also, the "Touch controls." link in the manual is broken. https://www.scirra.com/manual/119/touch