Haven't played this game, so I don't know how the controls work. If this is changing the existing buttons, look at the many other threads asking the same thing. If this is adding button control to a touchscreen-based game, you'd have to hook into somewhere, read the buttons manually, and fiddle with whatever variables the touchscreen routine sets. Probably you'd want to hook the touchscreen routine itself so you can be sure it won't just overwrite what you wrote before the game processes it.
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