Using Unity 3D tags?

Question

I cannot identify my prefabs with the tags I have set, I have already added the tags to the prefabs as you can see below:

and my condigo:

public void Checks(){

    for (int y = 0; y < gridHeight; ++y) {
        for (int x = 0; x < gridWidth; ++x) {
            if (Grid [x, y] != null) {

                if (Grid [x, y].tag == "CARBONO") {
                    Debug.Log ("EXISTE C: ");
                    if (Grid [x + 1, y].tag == "HIDROGENIO") {
                        cont++;
                    }
                    if (Grid [x - 1, y].tag == "HIDROGENIO") {
                        cont++;
                    }
                    if (Grid [x, y + 1].tag == "HIDROGENIO") {
                        cont++;
                    }
                    if (Grid [x, y - 1].tag == "HIDROGENIO") {
                        cont++;
                    }
                }
                Debug.Log ("contador: " + cont); //teste
            }
        }
    }
}

I put a checker to know if it enters the condition of a C in my grid, but as much as my grid appears Prefab C it goes straight through and does not do the rest of the checks.

The function that generates my prefabs randomly:

string GetRandomTetromino(){
    int randomTetromino = Random.Range (1, 5);
    string randomTetrominoName = "Prefabs/C";
    switch (randomTetromino) {
    case 1:
        randomTetrominoName = "Prefabs/H";
        break;
    case 2:
        randomTetrominoName = "Prefabs/C";
        break;
    case 3:
        randomTetrominoName = "Prefabs/H";
        break;
    case 4:
        randomTetrominoName = "Prefabs/C";
        break;

    }
    return randomTetrominoName;


}

and the function that the generated Prefab plays at its coordinates:

public void SpawnNextTetromino () {
    if (!gameStarted) {

        gameStarted = true;
        nextTetromino = (GameObject)Instantiate(Resources.Load(GetRandomTetromino(), typeof(GameObject)), new Vector2 (5.0f, 22.0f), Quaternion.identity);
        previewTetromino = (GameObject)Instantiate (Resources.Load (GetRandomTetromino (), typeof(GameObject)), previewTetrominoPosition, Quaternion.identity);
        previewTetromino.GetComponent<Tetromino> ().enabled = false;

    } else {
        previewTetromino.transform.localPosition = new Vector2 (5.0f, 20.0f);
        nextTetromino = previewTetromino;
        nextTetromino.GetComponent<Tetromino> ().enabled = true;

        previewTetromino = (GameObject)Instantiate (Resources.Load (GetRandomTetromino (), typeof(GameObject)), previewTetrominoPosition, Quaternion.identity);
        previewTetromino.GetComponent<Tetromino> ().enabled = false;
    }

}

here is the repository of my game: https://www.dropbox.com/sh/epm4dxbiwcjaxvp/AAC-SzKcXtZzGhd71CS45KXra?dl=0

Answer 1

I think you should try it this way. Search the game Object by name, because if you search for the tag, maybe bring all the game Object with different names but with the same tag.

GameObject randomTetrominoName = GameObject.Find("Prefabs/H");

switch (randomTetromino) 
{
    case 1:
        randomTetrominoName = GameObject.Find("Prefabs/H");
        break;
    ...
}

I hope I’ve helped.

Answer 2

To access the "tags" feature, depending on where your component tries to access Voce need to specify "gameobject" in front of the component.