Progressive Programming?

Programming Support ROBOTC Tech Support
#1

Hi, i am currently programming a chain bar bot and was wondering if there was anything like progressive programming?
So say i was to press button 5d once and it would go to a certain setpoint, is there a way to have it go to a different setpoint the next time i press the button 5d? and if there is, is there a way to refresh it to go back to the initial setpoint? Thanks for your help!

#2

@EvolvingJon has given you some good suggestions here.
https://vexforum.com/t/unofficial-response-to-progressive-programming/43225/1

A general approach to doing this would be using a finite state machine. The action your button has is determined by the “state” your program is in, once the button action has happened your program enters a new “state” and waits for the next command. Something like this.

task main()
{
    int state = 0;
    bool btnNotPressed = true;
    
    while(1) {
      if( vexRT Btn5U ] && btnNotPressed ) {
        // button is pressed
        btnNotPressed = false;
        
        switch(state) {
          case  0:
            // move motor to position 2
            state = 1;
            break;
        
          case  1:
            // move motor to position 3
            state = 2;
            break;

          case  2:
            // move motor to position 1
            state = 0;
            break;

          default:
            state = 0;
            break;
        }
      }
      else
      if( !vexRT Btn5U ] ) {
        // button is released
        btnNotPressed = true;
      }
      
      wait1Msec(20);
    }
}
#3