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Pumping effect with side buttons


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I attach a small program that address my basic requirements for some game controls:

- disc left or right only -> sprite turns left or right
- bottom button only -> sprite flights straight up
- bottom button + disc left or right only -> sprite flights in upper left or right direction
- high button: fire


However I would like the controller to behave in the following way:

- no auto-fire/auto-flight when the buttons remain pressed

- bottom button needs to be pressed multiple times in order to fly up (against gravity effect)


What design pattern do you recommend to achieve such control effects?

An additional question: can simultaneous press of bottom and high buttons be detected? It does not look like my program can achieve that at least





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