CLONING COLORS QUEST: " Spawn A Random Colored Block " - Solutions

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#1

This is my solution
I communicate between SpawnNewBlock.CS and ColorChanger.CS so I can choose a random color from Enum. ( I’m using “_CurrenColer = (Colors)randomValue;” so i can get the color from enum using values) :grin:

[SpawnNewBlock.Cs]

using UnityEngine;

public class SpawnNewBlock : MonoBehaviour
{
    [SerializeField] GameObject blockPrefab;
    [SerializeField] Transform spawnPosition;
    private GameObject[] currentBlock = new GameObject[100000];
    private int blockIndex = 0;
    



    public void SpawnBlock()
    {
        currentBlock[blockIndex] =  Instantiate(blockPrefab, spawnPosition.position, Quaternion.identity);
        currentBlock[blockIndex].GetComponent<ColorChanger>().RandomColors();
        blockIndex++;
    }

[ColorChanger.CS]

using UnityEngine;

public class ColorChanger : MonoBehaviour
{
    private SpriteRenderer mySpriteRenderer;
    private Color myColor;

    void Awake()
    {
        mySpriteRenderer = GetComponent<SpriteRenderer>();
    }

    private enum Colors
    {
        Yellow = 1,
        Cyan = 2,
        Red = 3 
    }

    [SerializeField]
    private Colors _CurrenColer;

    private void Start()
    {
        switch (_CurrenColer)
        {
            case Colors.Yellow:
                myColor = Color.yellow;
                break;
            case Colors.Cyan:
                myColor = Color.cyan;
                break;
            case Colors.Red:
                myColor = Color.red;
                break;
        }

        mySpriteRenderer.color = myColor;
    }

       public void RandomColors()
    {
        // Random Enum Value
        int randomValue = Random.Range(1, 4);
        // Random Colors
        _CurrenColer = (Colors)randomValue;
    }
}
2 Likes
#2

My solution was a bit more static, though I like the idea of using the Enum I created in ColorChanger and may go back and work it some more.

[SpawnNewBlock.cs]

public class SpawnNewBlock : MonoBehaviour
{
    [SerializeField] GameObject blockPrefab;
    [SerializeField] Transform spawnPosition;
    Color myColor;

    public void SpawnBlock()
    {
        switch (Random.Range(0, 3))
        {
            case 0:
                myColor = Color.red;
                break;
            case 1:
                myColor = Color.blue;
                break;
            case 2:
                myColor = Color.yellow;
                break;
        }

        GameObject myGameObject = Instantiate(blockPrefab, spawnPosition.position, Quaternion.identity) as GameObject;
        myGameObject.GetComponent<SpriteRenderer>().color = myColor;
    }
}
2 Likes
#3

Instead of editing the SpawnBlock() method, I added a trigger collider to the SpawnPosition game object and attached a new script with the following.

    void OnTriggerEnter2D(Collider2D other)
    {
        int randomNum = Random.Range(0, 3);
        GameObject instance = other.gameObject;

        if (randomNum == 0) { instance.GetComponent<SpriteRenderer>().color = Color.red; }
        else if (randomNum == 1) { instance.GetComponent<SpriteRenderer>().color = Color.blue; }
        else if (randomNum == 2) { instance.GetComponent<SpriteRenderer>().color = Color.yellow; }
    }```
#4

This makes sense to me, but my Color Changer script is defaulting every block to red since it’s first on the enum. The only way I’ve been able to get the instantiated blocks to be a different color is if I comment out the initial challenge. What am I missing?

#5

Probably a bit late now but I had a similar problem. It appeared that he colorChanger script is setting the colour of the prefabs as that script is attached to them. I deactivated the script on the prefabs but kept it active on the game object players and this worked fine. Don’t know if this will cause problems later. How did you resolve the issue?

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