How do I use the Input.GetAxis in a similar way to how GetKeyDown works?
In your project settings you can define certain ‘Inputs’. You may name your inputs like Fire, Fire1, and then define movement and other actions. Using the movement actions, you may define what axis are being used with the Key press, so for instance by default,
Input.GetAxis("Horizontal"); refers to the keys A & D, and also Left & Right Arrows.