Having trouble with multiple keys for one command

Questions & Answers
1

I am creating a side-scrolling platformer whose controls are based on the movement of most fighting games. That means if the player jumps vertically up, there is no horizontal movement. I got that taken care of.

HOWEVER, to perform flips, players must press FORWARD and UP at “the same time” (to flip forward) or they can flip backward (by pressing UP and BACKWARD).

I attempted to do something like:

if(Input.GetAxis("Horizontal") > 0 && Input.GetAxis("Vertical") > 0)

but that doesn’t work. I do not want to hard-code the input like this because what if I allow the player to change the controls later? Not every player will agree with my keybindings!

 if((GetButtonDown("S") && GetButton("W"))
  || (GetButtonDown("W") && GetButton("S"))
 {
     // Do Flip!
 }

S = move to the right

W = move up (jump)

THANK YOU IN ADVANCE!

2

I try to do this, but it only works if I have been pressing the horizontal movement control for a full second.

        // ONLY MOVES IF GROUNDED
        if (isGrounded)
        {
          
            // WHILE WALKING
            if (Input.GetButton("Horizontal"))
            {
                // If told to jump while walking, flip
                if(Input.GetButtonDown("Jump"))
                {
                    // If walking away from target, flip backward
                    if (Input.GetAxis("Horizontal") == -1)
                    {
                        print("FLIP BACKWARD");
                    }
                    // If walking toward target, flip forward
                    if (Input.GetAxis("Horizontal") == 1)
                    {
                        print("FLIP FORWARD");
                    }
                }
            }

        }