You’re mistaken about the calculation. If there are 4 power-ups, there are 32 possible combinations, such as power-up 1 + 2, power-up 1 + 2 + 4, and so on. With 5 power-ups, the number of possibilities increases to 64, following the pattern 2n where n is the number of power-ups.
What I’m asking is how to detect when multiple buttons are pressed simultaneously—for example, button 1 and button—and trigger a specific class based on that combination. This would work as an “if—>then” logic: if button 1 and button 2 are pressed, then switch to class X, where class X combines the effects of those two buttons
Ideally, the system would also handle different button combinations. For instance:
-Button 1 + Button 3 might activate class Y that combines powerups of the button 1 and 3
-Button 1 + Button 2 + Button 4 could trigger class Z that combines powerups of the button 1, 2 and 3
This logic would apply to all possible button/power-up combinations. However, I haven’t found a device capable of detecting these button presses, storing them in memory, and using them to execute conditional logic (if—>then) based on the specific inputs
Edit: I made my calculation wrong sorry 
I counted the order of the effects, but that have no importance. And I think is also made a mistake in the result… You might be correct, but I’ll have to verify though