I have been making a 2D game in Unity. I'm trying to make a game over screen appear every time a ball touches the player. I also added advertisements to release it. I added Restart and Continue buttons. When you press continue, an ad shows and the game continues. When Restart is pressed, it resets the game and your score. Whenever I restart the game and then press continue, the ad is played, but the game does not continue.
Here is the collision script:
using UnityEngine;
public class hitDetect : MonoBehaviour
{
public GameObject menuContainer;
private void OnTriggerEnter2D(Collider2D other)
{
Debug.Log("HIT");
menuContainer.SetActive(true);
Time.timeScale = 0;
}
}
This is the script that restarts the game:
using UnityEngine;
using UnityEngine.SceneManagement;
public class RestartGame : MonoBehaviour
{
public void Restart()
{
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
Time.timeScale = 1;
}
}
Here is the advertisement and continue script:
using UnityEngine;
using UnityEngine.Advertisements;
public class continueGame : MonoBehaviour, IUnityAdsListener
{
string placement = "rewardedVideo";
public GameObject menuContain;
private void Start()
{
Advertisement.AddListener(this);
Advertisement.Initialize("4006857", true);
}
public void Continue(string p)
{
Advertisement.Show(p);
}
public void OnUnityAdsReady(string placementId)
{
}
public void OnUnityAdsDidError(string message)
{
}
public void OnUnityAdsDidStart(string placementId)
{
}
public void OnUnityAdsDidFinish(string placementId, ShowResult showResult)
{
if(showResult == ShowResult.Finished)
{
menuContain.SetActive(false);
Time.timeScale = 1;
}
}
}
Once you call
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex)
a "new" scene is loaded and therefore anything currently existing is destroyed.
In continueGame you do
private void Start()
{
Advertisement.AddListener(this);
Advertisement.Initialize("4006857", true);
}
But you never remove that listener!
Thus the next time the Advertisement fires its event it is still trying to execute them of the now already destroyed continueGame instance.
Therefore you always should remove any listeners as soon as you don't need them anymore:
private void OnDestroy ()
{
Advertisement.RemoveListener(this);
}
Related
I have a game that is similar to "Flappy Bird" and I have main menu where I can start game and change skin of a pigeon. My skin collection is implemented with scroll rect and in the center there is a trigger which starts an animation of scaling a pigeon, it works fine until I click "start" and the scene changes to game and when I return to my main menu and click "skins" this trigger doesn't work anymore.
Script what is attached to all scroll rect elements to detect collisions with trigger:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ResizeFieldScript : MonoBehaviour
{
private Animator _anim;
private void Start()
{
_anim = GetComponent<Animator>();
}
public void OnTriggerEnter2D(Collider2D collider)
{
Debug.Log("Trigger is working");
if(collider.tag == "ResizeField")
{
Debug.Log("Condition is working");
_anim.SetBool("isInTrigger", true);
}
}
public void OnTriggerExit2D(Collider2D collider)
{
_anim.SetBool("isInTrigger", false);
}
}
Script what is attached to an empty object to change scenes:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.SceneManagement;
public class UIController : MonoBehaviour
{
[SerializeField] private List<string> sceneNameList;
private string sceneToFind;
private int index = 0;
public void SceneChanger()
{
sceneToFind = EventSystem.current.currentSelectedGameObject.name;
foreach(string str in sceneNameList)
{
if(str == sceneToFind)
{
SceneManager.LoadScene(index);
index = 0;
break;
}
index++;
}
}
public void Exit()
{
Application.Quit();
}
public void BackMenu()
{
SceneManager.LoadScene(4);
}
}
OnTriggerEnter2D doesn't work after switching scenes. We could use OnTriggerEnter2D to jump scenes.
code show as below:
private void Update() {
// If E is pressed
if (Input. GetKeyDown(KeyCode. E)) {
// scene switching
SceneManager.LoadScene(4);
}
}
private void OnTriggerEnter2D(Collider collision) {
if (collision. tag == "ResizeField") {
// The UI prompts the user to press E to jump
EnterDialog.SetActive(true);
Debug.Log("Condition is working");
// _anim.SetBool("isInTrigger", true);
}
}
Hope it helps you.
I can't get the Player Gameobject to reappear. The player deactivates the moment the Timeline starts when they touch the box collider, but the player never reactivates. I have tried using Player.SetActive(true) in the coroutine and even using an Invoke method with no luck. Any ideas on how to fix this? Please help.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
public class TimelineTrigger : MonoBehaviour
{
// calling items for Unity
public PlayableDirector timeline;
public GameObject Player;
public GameObject CutsceneCollider;
public GameObject CutsceneMC;
// Start is called before the first frame update
void Start()
{
// calls the playable director and turns off the MC for the scene
timeline = timeline.GetComponent<PlayableDirector>();
CutsceneMC.SetActive(false);
}
void Update()
{
Player = GameObject.FindGameObjectWithTag("Player");
}
private void EnableAfterTimeline()
{
Player = GameObject.FindGameObjectWithTag("Player");
Player.SetActive(true);
}
public void OnTriggerEnter2D (Collider2D col)
{
if (col.CompareTag("Player"))
{
// plays the cutscene and starts the timer
timeline.Play();
Player.SetActive(false);
Invoke("EnableAfterTimeline", 18);
CutsceneMC.SetActive(true);
StartCoroutine(FinishCut());
}
IEnumerator FinishCut()
{
// once the cutscene is over using the duration, turns off the collider and the MC.
yield return new WaitForSeconds(17);
CutsceneMC.SetActive(false);
CutsceneCollider.SetActive(false);
}
}
}
The issue here is that coroutines in Unity can't be run on inactive GameObjects, so FinishCut never gets executed.
This can be worked around by having a separate MonoBehaviour in the scene to which the responsibility of running a coroutine can be off-loaded. This even makes it possible to start static coroutines from static methods.
using System.Collections;
using UnityEngine;
[AddComponentMenu("")] // Hide in the Add Component menu to avoid cluttering it
public class CoroutineHandler : MonoBehaviour
{
private static MonoBehaviour monoBehaviour;
private static MonoBehaviour MonoBehaviour
{
get
{
var gameObject = new GameObject("CoroutineHandler");
gameObject.hideFlags = HideFlags.HideAndDontSave; // hide in the hierarchy
DontDestroyOnLoad(gameObject); // have the object persist from one scene to the next
monoBehaviour = gameObject.AddComponent<CoroutineHandler>();
return monoBehaviour;
}
}
public static new Coroutine StartCoroutine(IEnumerator coroutine)
{
return MonoBehaviour.StartCoroutine(coroutine);
}
}
Then you just need to tweak your code a little bit to use this CoroutineHandler to run the coroutine instead of your inactive GameObject.
public void OnTriggerEnter2D (Collider2D col)
{
if (col.CompareTag("Player"))
{
// plays the cutscene and starts the timer
timeline.Play();
Player.SetActive(false);
Invoke("EnableAfterTimeline", 18);
CutsceneMC.SetActive(true);
CoroutineHandler.StartCoroutine(FinishCut()); // <- Changed
}
IEnumerator FinishCut()
{
// once the cutscene is over using the duration, turns off the collider and the MC.
yield return new WaitForSeconds(17);
CutsceneMC.SetActive(false);
CutsceneCollider.SetActive(false);
}
}
If you have only one Player instance and it's accessible from the start, you'd better set it once in the Start method.
void Start()
{
// calls the playable director and turns off the MC for the scene
timeline = timeline.GetComponent<PlayableDirector>();
CutsceneMC.SetActive(false);
Player = GameObject.FindGameObjectWithTag("Player");
}
void Update()
{
}
private void EnableAfterTimeline()
{
Player.SetActive(true);
}
I am creating a game with unity and I have a question.
I have 5 game objects + player. And they always rotate when the game has started. I want that if the player collides with the object that is tagged snowflake, the other 4 objects pause the rotation.
Have a static event on your player script, when player collide invoke that event. On other scripts subscribe to that event.
For example in your PlayerScript should be something like
public class PlayerScript : MonoBehaviour {
public static UnityAction OnPlayerCollidedWithSnowFlakes;
private void OnCollisionEnter(Collision other) {
if (other.gameObject.tag.Equals("snowflake")) {
OnPlayerCollidedWithSnowFlakes?.Invoke();
}
}
}
And your RotatingObjectScript should be something like
public class RotatingObjectScript : MonoBehaviour {
private void Awake() {
PlayerScript.OnPlayerCollidedWithSnowFlakes += CollidedWithSnowflakeEventHandler;
}
private void OnDestroy() {
PlayerScript.OnPlayerCollidedWithSnowFlakes -= CollidedWithSnowflakeEventHandler;
}
private void CollidedWithSnowflakeEventHandler() {
.
.
// Stop rotating
.
.
}
}
I was following Unity 3d tutorial on the Learn Unity website, but here is the thing I wanted to do things a bit differently. It worked out well at start but in the end this turned out to be a bad decision and now I manually need to attach the script to every pickable object.
Here is my code:
Note: What it does is rotate the Pickups and display the score when the pickups collide with player ball.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class PickUps : MonoBehaviour {
public Vector3 Rotate;
private int Score;
public Text ScoreGUI;
private void Start()
{
Rotate = new Vector3(0, 25, 0);
Score = 0;
DisplayScore();
}
void Update () {
transform.Rotate(Rotate*Time.deltaTime);
}
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag("Ball"))
{
Destroy(this.gameObject);
Score = Score + 1;
DisplayScore();
}
}
void DisplayScore()
{
ScoreGUI.text = "SCORE " + Score.ToString();
}
}
Problem:
It works yes but I need to manually attach the text (under canvas) to every pickup object which is exhausting and not a good thing to do.
What I want To achieve:
Like in the tutorials mostly they use prefabs in this kind of work (I think), problem is I can attach the text to the pickups (objects/biscuits) in the current scene but I cannot drag and attach the text To the prefab of biscuits I made the text just wont attach in its blank for "Text".
You shouldn't change the score Text directly. Use a Controller to make the bridge instead. I would do something like this:
Put this script somewhere in your scene:
public class ScoreManager : Singleton<ScoreManager>
{
private int score = 0;
// Event that will be called everytime the score's changed
public static Action<int> OnScoreChanged;
public void SetScore(int score)
{
this.score = score;
InvokeOnScoreChanged();
}
public void AddScore(int score)
{
this.score += score;
InvokeOnScoreChanged();
}
// Tells to the listeners that the score's changed
private void InvokeOnScoreChanged()
{
if(OnScoreChanged != null)
{
OnScoreChanged(score);
}
}
}
This script attached in the Text game object:
[RequireComponent(typeof(Text))]
public class ScoreText : MonoBehaviour
{
private Text scoreText;
private void Awake()
{
scoreText = GetComponent<Text>();
RegisterEvents();
}
private void OnDestroy()
{
UnregisterEvents();
}
private void RegisterEvents()
{
// Register the listener to the manager's event
ScoreManager.OnScoreChanged += HandleOnScoreChanged;
}
private void UnregisterEvents()
{
// Unregister the listener
ScoreManager.OnScoreChanged -= HandleOnScoreChanged;
}
private void HandleOnScoreChanged(int newScore)
{
scoreText.text = newScore.ToString();
}
}
And in your PickUps class:
void DisplayScore()
{
ScoreManager.Instance.SetScore(Score); // Maybe what you need is AddScore to not
// reset the value everytime
}
A simple singleton you can use (you can find more complete ones on the internet):
public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
{
static T instance;
public static T Instance
{
get
{
if (instance == null)
{
instance = (T)FindObjectOfType(typeof(T));
if (instance == null) Debug.LogError("Singleton of type " + typeof(T).ToString() + " not found in the scene.");
}
return instance;
}
}
}
But be careful, the singleton pattern can be a shot in the foot if not used correctly. You should only it them moderately for managers.
I have 2 script and i am try to make one trigger for the first script to enable other script trigger, i have try to investigate but i still stuck on my code.
my first code is
using UnityEngine;
using System.Collections;
public class endpoint10 : MonoBehaviour {
public static int IsColliderEnabled;
endpoint10.IsColliderEnabled = 0;
void OnTriggerEnter(Collider other)
{
if (IsColliderEnabled = 1) {
//do stuff here
// The switch statement checks what tag the other gameobject is, and reacts accordingly.
switch (other.gameObject.tag) {
case "end":
Debug.Log (other.gameObject.tag);
PlayerPrefs.SetInt ("moneyPref", scoreManager.money);
PlayerPrefs.SetInt ("scorePref", scoreManager.score);
ScoreSystem.level += 1;
PlayerPrefs.SetInt ("levelPref", ScoreSystem.level);
Debug.Log ("values stored");
Application.LoadLevel ("level_11");
break;
}
}
// Finally, this line destroys the gameObject the player collided with.
//Destroy(other.gameObject);
}
}
and my second code is
using UnityEngine;
using System.Collections;
public class trigguercubex : MonoBehaviour {
public GameObject[] objects;
void OnTriggerEnter(Collider other)
{
endpoint10.IsColliderEnabled = 1;
Debug.Log (other.gameObject.tag);
}
// Finally, this line destroys the gameObject the player collided with.
//Destroy(other.gameObject);
}
Do you have a game manager script?
You could use setters and getters
using UnityEngine;
using System.Collections;
public class GameManager : MonoBehaviour {
public static GameManager instance = null;
private bool triggerredOccurred = false;
public bool IsTriggerredOccurred {
get { return triggerredOccurred;}
}
public void TriggerredOccurred() {
triggerredOccurred = true;
}
void Awake(){
if (instance == null) { //check if an instance of Game Manager is created
instance = this; //if not create one
} else if (instance != this) {
Destroy(gameObject); //if already exists destroy the new one trying to be created
}
DontDestroyOnLoad(gameObject); //Unity function allows a game object to persist between scenes
}
// Use this for initialization
void Start () {
}
// Update is called once per frame
void Update () {
}
}
In your endpoint class, when the collision was detected
GameManager.instance.TriggerOccurred ();
In your trigguercubex class
if (GameManager.instance.IsTriggerOccurred) {
do some stuff ();
}
I attach the GameManager script to my game's Main Camera