Closing the loop

Now we have a progress bar to show how close the player is to catching the fish, we need to add a way for the fish to actually be caught.

To check if the fish has been caught, we added a new GameObject called UIManager which will handle winning and losing states, along with showing relevant text when this happens. The UIManager reads the progress value from the ProgressController, then shows the win state if progress is over one hundred, and the fail state if it's zero or under. The ProgressController stores progress as a percentage, which is why the range is between zero and one hundred.

The winning and losing UI is just some text added to the scene at the moment, and the UIManager just loops over the relevant text and changes the component's setActive flag:

GameObject[] lose;

void Start () {

    // save ref here - setactive(false) means findgameobjects return null
    // once you have these references then you can loop through and call SetActive(false)
    // to hide the UI text
    lose = GameObject.FindGameObjectsWithTag ("Lose");
}


void Update () {

    // progress is a reference to the ProgressController
    if (progress.progress < 0) {
        Debug.Log ("lose!");

        // show text
        showLose ();

        // pause the game
        Time.timeScale = 0;
    }

    if (progress.progress > 100) {
        Debug.Log ("win");
        showWin ();
        Time.timeScale = 0;
    }
}

// similar function for the win state
private void showLose () {

    // if you tried to use FindObjectsWithTag here, then nothing would be found
    // since we called SetActive(false) in the Start method
    foreach (GameObject o in lose) {
        o.SetActive (true);
    }
}

Here's a video of it in action: