Botton

i was making simple 2d game from tutorial and I thought I would try to make it mobile,
I need help how to write script for the button; if i click the button it will be read as up key on
keyboard, or any key on keyboard (1 button per 1 key) i have controls for they keys and i don't want to write everything from beginning (well i cannot write cause i have no idea what i'm doing)

 

You say you have controls for keyboard input already. How does that look?
If it is somethink like this

Code (CSharp):

1. private void Update() {
2.   if(Input.GetKeyDown(KeyCode.A)) {
3.     PressA();
4.   }
5. }
6.  
7. private void PressA() {
8.   // handle input
9. }

then your button could just call

PressA()

as well and the A-key and the button would have the same effect. Is this what you want?

 

Code (CSharp):

1. if (Input.GetKeyDown(KeyCode.UpArrow) && transform.position.y < maxY) {
2.             camAnim.SetTrigger("shake");
3.             Instantiate(moveEffect, transform.position, Quaternion.identity);
4.             targetPos = new Vector2(transform.position.x, transform.position.y + increment);
5.         } else if (Input.GetKeyDown(KeyCode.DownArrow) && transform.position.y > minY) {
6.             camAnim.SetTrigger("shake");
7.             Instantiate(moveEffect, transform.position, Quaternion.identity);
8.             targetPos = new Vector2(transform.position.x, transform.position.y - increment);

 

i would want something like if i clickbutton on screen it would have same effect as clicking button on keybord

 

You have to rewrite this like so:

Code (CSharp):

1. if (Input.GetKeyDown(KeyCode.UpArrow))
2. {
3.   PressUp();
4. }
5.  
6. private void PressUp()
7. {
8.   if(transform.position.y >= maxY) return;
9.   camAnim.SetTrigger("shake");
10.   Instantiate(moveEffect, transform.position, Quaternion.identity);
11.   targetPos = new Vector2(transform.position.x, transform.position.y + increment);
12. }

and then your button can also call the PressUp() function.