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How to make the script wait/sleep in a simple way in unity
(7 answers)
Closed last year.
So I am currently trying to make a game and I want one of the features to be when you hit a certain block I called it Obstacle you will pause for 1 second. I just don't know how to add that pause in C#.
The script:
using UnityEngine;
public class PlayerCollision : MonoBehaviour {
public Movememt movement;
void OnCollisionEnter (Collision Collisioninfo)
{
if (Collisioninfo.collider.name == "Obstacle")
{
movement.enabled = false;
// i want the pause here
movement.enabled = true;
}
}
}
You can do it using coroutines.
You can change the return value from void to IEnumerator which will allow you to "pause" by yeilding a new WaitForSeconds instance. Here is an example:
IEnumerator OnCollisionEnter(Collision collision)
{
if (collision.collider.name == "Obstacle")
{
movement.enabled = false;
yield return new WaitForSeconds(1);
movement.enabled = true;
}
}
You can use WaitForSeconds with coroutines. For details please go through the link.
yield return new WaitForSeconds(1);
You can pause or resume the game by setting the timescale to 0 or back to 1.
void PauseGame()
{
Time.timeScale = 0;
}
void ResumeGame()
{
Time.timeScale = 1;
}
Related
I'm new in c#, and I'm trying to make a platform falling down when the player stand on it. I used StartCoroutine so the platform fall down after five seconds, but for some reason my couroutine doesn't working.
this is the code:
public GameObject player;
private Rigidbody rb;
void Start()
{
rb = GetComponent<Rigidbody>();
rb.useGravity = false;
//rb.isKinematic = false;
}
// Update is called once per frame
void Update()
{
}
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.tag == "player")
{
StartCoroutine(ObjectFall());
}
}
IEnumerator ObjectFall()
{
yield return new WaitForSeconds(5f);
Debug.Log("Its working");
this.rb.useGravity = true;
//this.rb.isKinematic = true;
}
}
You dont need to use IEnumerable if you have no parameters for the function. You could use Invoke("ObjectFall", 5) and turn your IEnumerable to void without yield. Its probably not the source of the problem but give it a try. Scale in your game is probably wrong that's why mass 1000 works. Try fixing your scale for the whole scene. Remember 1 unit = 1 meter more or less
I'm making a Mario replica in unity for my homework, and I'm trying to make the "Invisible" block, it starts off invisible, then when hit, it turns visible. I'm trying to use SpriteRenderer.enable to make it work, it works for turning it off in the start, but not when trying to make it visible.
I've tried to create a separate script for this particular block, but results are the same. All the tags are set correctly, I've tried using Debug.log to see if I enter the "if" where the sprite should be enabled, but the result is negative.
This is the start method turning off the sprite renderer for the particular block (it works):
private void Start()
{
//rendObject = this.gameObject.GetComponent<SpriteRenderer>();
if (gameObject.tag == "Invisible")
{
gameObject.GetComponent<SpriteRenderer>().enabled = false;
}
}
This is all the blocks script:
private void OnCollisionEnter2D(Collision2D collision)
{
if (timesToBeHit > 0)
{
if (collision.gameObject.tag == "Player" && IsPlayerBelow(collision.gameObject))
{
if (gameObject.tag == "Invisible")
{
gameObject.GetComponent<SpriteRenderer>().enabled = true;
}
collision.gameObject.GetComponent<PlayerController>().isJumping = false; //Mario can't jump higher
Instantiate(prefabToAppear, transform.parent.transform.position, Quaternion.identity); //instantiate other obj
timesToBeHit--;
anim.SetTrigger("GotHit"); //hit animation
}
}
if (timesToBeHit == 0)
{
anim.SetBool("EmptyBlock", true); //change sprite in animator
}
}
We've found a solution in chat, but for all people who may run or have run on this kind of problem will need to check for the next things:
Must have 2 Colliders of any type, 1 per gameObject.
At least 1 Rigidbogy.
Appropriately Collider setup.
Appropriate Tags.
Appropriate Layer Collision Matrix.
The code below will work.
public SpriteRenderer render;
void Start()
{
render.enabled = false;
}
private void OnCollisionEnter2D(Collision2D other)
{
if (other.gameObject.tag == "Player")
{
render.enabled = true;
}
}
public class InvisibleBlock : MonoBehaviour
{
public SpriteRenderer rendObject;
private void Start()
{
if (gameObject.tag == "Invisible")
{
rendObject.enabled = false;
}
}
void OnCollisionEnter2D(Collision2D collision)
{
if (collision.gameObject.tag == "Player")
{
rendObject.enabled = true;
}
}
}
Separate script, sprite is attached in inspector, same results.
in my project im trying to count the diferent objects and simulate a little animation, for example i have stars in my game, and i want to count the number of stars in the final of the game from 0 trough the number of stars the user got, so i did this:
public void youWin()
{
audio.Stop ();
StartCoroutine (activatePanel ());
}
IEnumerator activatePanel()
{
yield return new WaitForSeconds (3f);
pausePanel2.SetActive (true);
for (int i = 0; i <= stars; i++) {
yield return new WaitForSeconds (0.2f);
starText2.text = i + "";
}
}
my code worked well for 0.3f on the for loop wait for seconds, but it is too slow, i want it for 0.2f, but something strange happen sometimes it get like a bug and the first number seems to go back, it doesn't count right, someone know what is happening?
It very likely that the activatePanel function is being called from another place while it is already running or the script that contains this code is attached to multiple GameObjects and the activatePanel is again, being called by another function. You can use flag to stop this from happening.
If the coroutine function is already running, use yield break; to break out of it.
bool isRunning = false;
IEnumerator activatePanel()
{
//Exit if already running
if (isRunning)
{
yield break;
}
//Not running, now set isRunning to true then run
isRunning = true;
yield return new WaitForSeconds(3f);
pausePanel2.SetActive(true);
WaitForSeconds waitTime = new WaitForSeconds(0.2f);
for (int i = 0; i <= stars; i++)
{
yield return waitTime;
starText2.text = i.ToString();
}
//Done running, set isRunning to false
isRunning = false;
}
Well i solved it with all of you guys help, actually you all where right, i thaught i was calling the youWin function just 1 time, but i forgot this is unity and i called the youWin inside a trigerEnter function, that means that the object keep enter the triger function and called the youWin function, thank you all here is what i mean with that
Solved it with the bool entered
public class Victory : MonoBehaviour {
Manager gameManager;
// Use this for initialization
public AudioClip clip;
private AudioSource audio;
public Animator girl;
private bool entered;
void OnTriggerEnter(Collider c)
{
if (c.gameObject.tag == "Player" && !entered) {
gameManager.win = true;
audio.clip = clip;
audio.Play ();
gameManager.Ball.GetComponent<MoveBall> ().enabled = true;
girl.SetBool ("win",true);
entered = true;
gameManager.youWin ();
}
}
void Start () {
gameManager = GameObject.Find ("GameController").GetComponent<Manager> ();
audio = GetComponent<AudioSource> ();
entered = false;
}
// Update is called once per frame
void Update () {
}
}
So I'm making a top-down tank shooter game and I want to make a better reloading system than it was before. So I came to the idea that I need some king of progress bar. I knew how to make it so I started doing it. The problem is that it doesn't work properly. As I show in the .gif above, the progress bar don't go down when you shoot second time. Because I'm new to unity, I still don't know everything very good. So I came here, maybe someone could help.
EDIT:
I just found another problem and maybe an answer why I have this problem. The second time my script tries to reload, my "needTimer" bool is false, thus the progress bar is not going down when it's false. The new question would be why it becomes false instead of true?
My reloading script:
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
public class Reload : MonoBehaviour {
public float ammo;
public Image progress;
public bool alreadyReloading;
public bool needTimer;
void Start () {
alreadyReloading = false;
}
IEnumerator needtimertime(){
yield return new WaitForSeconds (6.5f);
needTimer = false;
}
IEnumerator uztaisyt(){
Debug.Log ("REEELOUUUDING!");
yield return new WaitForSeconds(6.5f);
ammo += 1;
alreadyReloading = false;
}
void Update () {
if (needTimer == true) {
timer ("");
}
if (ammo < 5) {
if(alreadyReloading == false){
needTimer = true;
StartCoroutine(uztaisyt());
alreadyReloading = true;
}
}
if (progress.fillAmount <= 0) {
progress.fillAmount = 1.0f;
}
}
void timer(string tipas){
progress.fillAmount -= Time.deltaTime / 6.5f;
StartCoroutine (needtimertime ());
}
}
When you start the uztaisyt() as a coroutine after shooting the first time (in the animation), needTimer is set to true and in the next Update() call, the needtimertime() coroutine will start. Since both the uztaisyt() and needtimertime() have identical 6.5 second waits, they will not both return on the same frame update because needtimertime() will always be started in the next frame after uztaisyt(). And, since there is no guarantee of the time interval between Update() calls, (see Time and Frame Managment), this interval may be more than expected and needtimertime() could return false in the frame right after uztaisyt() is called after firing the second time.
To ensure that the needtimertime() is always started (if not already running) immediately following a call for uztaisyt() (and called within the same frame update), you could try the following update to Reload script, (basically changes to the Update() method and when/how _isTimerRunning is set).
public class Reload : MonoBehaviour {
public float ammo;
public Image progress;
private bool _alreadyReloading;
private bool _isTimerRunning;
void Start () {
_alreadyReloading = false;
_isTimerRunning = false;
}
IEnumerator needtimertime(){
yield return new WaitForSeconds (6.5f);
_needTimer = false;
}
IEnumerator uztaisyt(){
Debug.Log ("REEELOUUUDING!");
yield return new WaitForSeconds(6.5f);
ammo += 1;
_alreadyReloading = false;
}
void Update () {
if (ammo < 5) {
if(_alreadyReloading == false){
StartCoroutine(uztaisyt());
_alreadyReloading = true;
//this will check for and start the progress bar timer in the same udate call
//so both coroutines finish on the same frame update
if(!_isTimerRunning){
_isTimerRunning = true;
timer ("");
}
}
}
if (progress.fillAmount <= 0) {
progress.fillAmount = 1.0f;
}
}
void timer(string tipas){
progress.fillAmount -= Time.deltaTime / 6.5f;
StartCoroutine (needtimertime ());
}
}
I found my problem and fixed it.
The problem was that needTimer was becoming false. So I found where and removed it.
my new code:
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
public class Reload : MonoBehaviour {
public float ammo;
public Image progress;
public bool alreadyReloading;
public bool needTimer;
void Start () {
alreadyReloading = false;
needTimer = false;
}
IEnumerator uztaisyt(){
Debug.Log ("REEELOUUUDING!");
yield return new WaitForSeconds(6.5f);
ammo += 1;
alreadyReloading = false;
}
void Update () {
if (ammo < 5.0f) {
if(alreadyReloading == false){
progress.fillAmount = 1.0f;
needTimer = true;
StartCoroutine(uztaisyt());
alreadyReloading = true;
}
if (needTimer == true) {
timer ("");
}
}
}
void timer(string tipas){
progress.fillAmount -= Time.deltaTime / 6.5f;
}
}
So I was making a game using the Unity 3d game engine, and I was using WaitForSeconds, but I keep running into various errors depending on what I change. Here is my code (without the WaitForSeconds):
using UnityEngine;
using System.Collections;
public class Attack : MonoBehaviour {
public int attack = 1;
public ParticleSystem MA;
// Use this for initialization
void Start () {
MA.enableEmission = false;
}
// Update is called once per frame
void Update () {
if(Input.GetKeyDown (KeyCode.E)){
attack++;
if(attack > 3){
attack = 1;
}
print (attack);
}
if(attack == 1){
if(Input.GetKeyDown (KeyCode.Q)){
print ("punch");
}
}
if(attack == 2){
if(Input.GetKeyDown (KeyCode.Q)){
/*if(Input.GetKeyDown (KeyCode.Q)){
WaitForSeconds magicdelay = new WaitForSeconds(1.0f);
yield return magicdelay;
/*MA.enableEmission = true;
yield return WaitForSeconds(1f);
MA.enableEmission = false;
}*/
print ("magic");
MA.enableEmission = true;
//I need help with the WaitForSeconds her
}
}
}
}
I tried YieldInstruction WaitForSeconds = (int)1f; multiple times, but that didn't work. Help please!
You have to use the Unity3d coroutines to solve the problem.
There are some useful links that can help:
Unity3D coroutine class
How to start Unity3D coroutines
if(Input.GetKeyDown (KeyCode.Q)){
StartCoroutine("Magic");
}
IEnumerator Magic(){
print ("magic");
MA.enableEmission = true;
yield return new WaitForSeconds(1.0f);
MA.enableEmission = false;
}
This should work:
void Start ()
{
StartCoroutine (MyCoroutine ());
}
IEnumerator MyCoroutine ()
{
while(true)
{
Debug.Log(Time.time);
yield return new WaitForSeconds(1f);
}
}