如何在Unity中通過腳本更改Sprite的Alpha

Question

我有4個按鈕，當按下按鈕時，每個按鈕都會閃爍。 但是，如果您要按一個按鈕，則當該按鈕變暗（閃爍）時，請單擊另一個按鈕，然后該按鈕將保持黑暗。 我想在禁用精靈之前重設精靈的顏色，但是它不起作用。 當按下按鈕時，它們不再閃爍...。

這是代碼：

void Start () {
        easy.GetComponent<SpriteRenderer>().color = color;
    }

    void Update () {
        if(difficultySelected[0] == true){
            enemyBehavior.shotsPerSecond = 0.2f;
            //Enabling the selected button
            easy.enabled = true;

            //Reseting the colors
            normal.GetComponent<SpriteRenderer>().color = color;
            hard.GetComponent<SpriteRenderer>().color = color;
            expert.GetComponent<SpriteRenderer>().color = color;

            //Disabling the 'unselected' buttons
            normal.enabled = false;
            hard.enabled = false;
            expert.enabled = false;

            easy.Play("Difficulty");
        }else if(difficultySelected[1] == true){
            enemyBehavior.shotsPerSecond = 0.5f;
            normal.enabled = true;

            easy.GetComponent<SpriteRenderer>().color = color;
            hard.GetComponent<SpriteRenderer>().color = color;
            expert.GetComponent<SpriteRenderer>().color = color;

            easy.enabled = false;
            hard.enabled = false;
            expert.enabled = false;

            normal.Play("Difficulty");
        }else if(difficultySelected[2] == true){
            enemyBehavior.shotsPerSecond = 1;
            hard.enabled = true;

            easy.GetComponent<SpriteRenderer>().color = color;
            normal.GetComponent<SpriteRenderer>().color = color;
            expert.GetComponent<SpriteRenderer>().color = color;

            easy.enabled = false;
            normal.enabled = false;
            expert.enabled = false;

            hard.Play("Difficulty");
        }else if(difficultySelected[3] == true){
            enemyBehavior.shotsPerSecond = 2;
            expert.enabled = true;

            easy.GetComponent<SpriteRenderer>().color = color;
            normal.GetComponent<SpriteRenderer>().color = color;
            hard.GetComponent<SpriteRenderer>().color = color;

            easy.enabled = false;
            normal.enabled = false;
            hard.enabled = false;

            expert.Play("Difficulty");
        }
    }

Answer 1

你可以寫：

color.a = 1f; // value between 0 and 1, where 1 is opaque

//Resetting the colors
normal.GetComponent<SpriteRenderer>().color = color;
hard.GetComponent<SpriteRenderer>().color = color;
expert.GetComponent<SpriteRenderer>().color = color;