Unity2D How do i get the main camera to move up on the Y axis continuously after i left mouse click? - unity3d

Question

I'm trying to get my main camera to move upwards on the Y axis slowly only after the left mouse button is clicked.
Here is my code so far.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
public class CameraPanUp : MonoBehaviour
{
public float speed = 5f;
public Transform target;
Vector3 offset;
// Start is called before the first frame update
void Start()
{
offset = transform.position - target.position;
}
// Update is called once per frame
void FixedUpdate()
{
Vector3 targetCamPos = target.position + offset;
transform.position = Vector3.Lerp(transform.position, targetCamPos, speed * Time.deltaTime);
if (Input.GetMouseButtonDown(0))
{
}
}
}
I'm unsure what to put in the if statement above. I tried using transform.Translate before and it just made the Camera move up in small increments every time i left click. Why is that? Any help would be gladly appreciated.

Answer 1

One option is to use Coroutines:
Coroutine moveCoroutine;
IEnumerator StartMovingUp() {
float moveSpeed = 2f;
while(true) {
transform.Translate(0, moveSpeed * Time.deltaTime, 0);
yield return null;
}
}
void Update() {
if (Input.GetMouseButtonDown(0) && moveCoroutine == null) {
moveCoroutine = StartCoroutine(StartMovingUp());
}
}
another is doing it in the Update function with fields for state. Anything more may make the code too complicated.
bool isMovingUp;
float moveSpeed = 2f;
void Update() {
if (Input.GetMouseButtonDown(0)) {
isMovingUp = true;
}
if (isMovingUp) {
transform.Translate(0, moveSpeed * Time.deltaTime, 0);
}
}