UnityException: Transform child out of bounds PlayerScript.CreateAtStart (Int32 amount) (at Assets/W

I cannot find anything on the forums that talk about this error specifically. I have tried changing some things but it does not fix this issue.

CodeUnityException: Transform child out of bounds
PlayerScript.CreateAtStart (Int32 amount) (at Assets/Walls/Scripts/PlayerScript.cs:297)
PlayerScript.Start () (at Assets/Walls/Scripts/PlayerScript.cs:66)"

Here is my script.

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine.UI;
5. using UnityEngine.SceneManagement;
6.  
7. public class PlayerScript : MonoBehaviour {
8.  
9.     //this script controls most functions of the game
10.     //handle game start animation
11.     //it generates tiles and closes tiles
12.     //calculates score
13.     //decides when player dies
14.  
15.  
16.     public GameObject xTilePrefab;
17.     public GameObject yTilePrefab;
18.  
19.     public Transform contactPoint;
20.     public LayerMask whatIsGround;
21.     public GameObject ps;    //particle system for coin
22.     public GameObject cam;    //main camera refrence
23.     public float speed  ;    //ball speed
24.  
25.     public bool onXTile ;     //on which tile ball is
26.     public bool onYTile ;
27.     public bool generateTile;    //when to generate tile
28.  
29.     public Text scoreText;    //refrence for UI element
30.     public GameObject startObj;
31.     public Animator anim;        //UI animator
32.     public Animator scoreAnim;    //when game ends because of zero score
33.  
34.     //for storing active X and Y tiles
35.     public List<GameObject> currentTileX;
36.     public List<GameObject> currentTileY;
37.  
38.     //storing inactive X and Y tiles
39.  
40.     public List<GameObject> recycledTileX ;
41.     public     List<GameObject> recycledTileY ;
42.  
43.     //list of all audio assets
44.     public AudioClip [] audios;
45.  
46.  
47.     Vector3 dir ;
48.     bool camMoved;
49.     public int score;
50.     bool restart;
51.     bool gmStarted;
52.     float tileGenerateSpeed;
53.     List<GameObject> closeAnimX;
54.     List <GameObject> closeAnimY;
55.  
56.  
57.  
58.     void Awake(){
59.         CreateTiles (30);
60.  
61.     }
62.  
63.     void Start () {
64.  
65.         gmStarted = false;
66.         CreateAtStart (10);
67.         generateTile = true;
68.         scoreText.text = "SCORE : " + score;
69.         restart = true;
70.  
71.         closeAnimX = new List<GameObject>();
72.         closeAnimY = new List<GameObject>();
73.  
74.  
75.  
76.     }
77.  
78.  
79.     void FixedUpdate(){
80.      
81.         if (currentTileY.Count != 0 && currentTileX.Count != 0 && IsGrounded()&& !camMoved) {
82.             CamFollow ();
83.         }
84.  
85.         //translating ball
86.         transform.Translate (dir * speed * Time .deltaTime);
87.     }
88.  
89.     void Update () {
90.  
91.         //handeling mouse click and checking player is on ground(tile) or not
92.             OnClickMouse ();
93.             IsGrounded ();
94.  
95.         //if player is not on any tile or score gets zero
96.         if (!IsGrounded () && restart || score < 0 && restart ) {
97.             if(score < 0)
98.                 scoreAnim.SetTrigger("Score0");
99.          
100.             StartCoroutine(PlayerDead());
101.             restart = false;
102.         }
103.  
104.     }
105.     IEnumerator PlayerDead(){
106.  
107.         //managing sound
108.         GetComponent<AudioSource> ().volume = 1;
109.         GetComponent<AudioSource> ().pitch = 1;
110.  
111.         GetComponent<AudioSource>().clip = audios[5];
112.         GetComponent<AudioSource>().Play();
113.  
114.         //when player is dead, restart the game after 2 seconds
115.  
116.         yield return new WaitForSeconds (2);
117.  
118.  
119.         if (PlayerPrefs.GetInt ("GamePlayed", 0) >PlayerPrefs.GetInt("AD",30)) {
120.  
121.         }
122.         //reload current scene
123.         SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
124.  
125.     }
126.  
127.     //changes ball speed when it touchs blocker on the tile
128.     //reduces score every time it collides blocker
129.     //decides on which tile ball is
130.  
131.     void OnTriggerEnter(Collider other){
132.  
133.  
134.         if (other.CompareTag ("Block")) {
135.  
136.             //if ball trigers blocker, it changes ball direction and generates a number of new tiles which will be generaated
137.             dir = -dir;
138.             int randomTileNumber = Random.Range (5, 9);
139.             ActivateTiles (randomTileNumber);
140.  
141.             //reducing score by 1
142.             score--;
143.  
144.             if(score >= 0){
145.             scoreText.text  = "SCORE : " + score;
146.                 GetComponent<AudioSource> ().volume = 1;
147.                 GetComponent<AudioSource> ().pitch = 1;
148.  
149.                 GetComponent<AudioSource>().clip = audios[1];
150.                 GetComponent<AudioSource>().Play();
151.             }
152.  
153.             //calculating on which tile ball is
154.  
155.         } else if (other.CompareTag ("XTile")) {
156.             onYTile = false;
157.             onXTile = true;
158.         } else if (other.CompareTag ("YTile")) {
159.             onXTile = false;
160.             onYTile = true;
161.         } else if (other.CompareTag ("Coin")) {
162.  
163.             score += 2;
164.             Instantiate(ps,other.transform.position,other.transform.rotation);
165.             other.gameObject.SetActive (false);
166.             scoreText.text = "SCORE : " + score;
167.             GetComponent<AudioSource> ().pitch = 1;
168.  
169.             GetComponent<AudioSource> ().volume = .5f;
170.             GetComponent<AudioSource>().clip = audios[3];
171.             GetComponent<AudioSource>().Play();
172.         }
173.     }
174.  
175.  
176.     //handles mouse click, increases score by 5 on every click, changes direction of ball on mouse click
177.  
178.     void OnClickMouse(){
179.  
180.  
181.         if (Input.GetMouseButtonDown (0) && IsGrounded() && score >= 0) {
182.          
183.  
184.             if (!gmStarted) {
185.              
186.                 //handeling first click of game
187.  
188.                 GetComponent<Rigidbody> ().isKinematic = false;
189.                 anim.SetTrigger ("GameStarted");
190.  
191.                 if (!anim.GetCurrentAnimatorStateInfo (0).IsName ("GameStarted"))
192.              
193.                 scoreText.gameObject.SetActive (true);
194.                 gmStarted = true;
195.                 GetComponent<AudioSource> ().pitch = 1;
196.                 GetComponent<AudioSource> ().volume = 1;
197.                 GetComponent<AudioSource> ().clip = audios [0];
198.                 GetComponent<AudioSource> ().Play ();
199.      
200.             } else {
201.                 GetComponent<AudioSource> ().pitch = 1.35f;
202.                 GetComponent<AudioSource> ().volume = 1;
203.                 GetComponent<AudioSource>().clip = audios[1];
204.                 GetComponent<AudioSource>().Play();
205.             }
206.      
207.  
208.                 score += 5;
209.              
210.             scoreText.text = "SCORE : " + score;
211.             generateTile = true;
212.  
213.             //changing ball direction on every click
214.  
215.             if (dir == Vector3.right || dir == -Vector3.right) {
216.                 dir = Vector3.forward;
217.             } else if (dir == Vector3.forward || -dir == Vector3.forward) {
218.                 dir = -Vector3.right;
219.             }else{
220.                 dir = -Vector3.right;
221.             }
222.         }
223.     }
224.  
225.     //hadels camera to follow the ball smoothly
226.  
227.     void CamFollow(){
228.         GameObject tmp = null;
229.  
230.         if (onYTile && currentTileX.Count != 0) {
231.  
232.             //if ball is on Y Tile, giving a target to camera to follow
233.             //you can try to change the target
234.  
235.             tmp = currentTileX[currentTileX.Count -1];
236.  
237.         }else if (onXTile && currentTileY.Count != 0) {
238.  
239.             tmp = currentTileY[currentTileY.Count - 1];
240.  
241.         }
242.         Vector3 point = cam.GetComponent<Camera>().WorldToViewportPoint(tmp.transform.position);
243.         Vector3 delta = tmp.transform.position - cam.GetComponent<Camera>().ViewportToWorldPoint(new Vector3(0.5f, 0.5f, point.z));
244.         Vector3 destination = cam.transform.position + delta;
245.         Vector3 velocity = Vector3.zero;
246.         cam.transform.position =  Vector3.SmoothDamp(cam.transform.position, destination,ref velocity, .35f);
247.  
248.     }
249.      
250.     private bool IsGrounded(){
251.  
252.         //making a sphere at bottom of the ball and checking its collision to the tile
253.  
254.         Collider [] colliders = Physics.OverlapSphere (contactPoint.position, .3f, whatIsGround);
255.         for(int i = 0; i<colliders.Length; i++){
256.             if(colliders.gameObject != gameObject){
257.  
258.                 return true;
259.             }
260.         }
261.  
262.         return false;
263.  
264.     }
265.  
266.      
267.     public void CreateTiles(int amount){
268.  
269.         //renaming all new tiles which we are going to generate
270.  
271.         for (int i = 0; i < amount; i++) {
272.             recycledTileX.Add (Instantiate (xTilePrefab));
273.  
274.             //renaming last element of array
275.             recycledTileX [recycledTileX.Count - 1].name = ("xTile");
276.             recycledTileX [recycledTileX.Count - 1].SetActive (false);
277.             recycledTileY.Add (Instantiate (yTilePrefab));
278.             recycledTileY [recycledTileY.Count - 1].name = ("yTile");      
279.             recycledTileY [recycledTileY.Count - 1].SetActive (false);
280.         }
281.     }
282.  
283.     void ManageSpeed(){
284.         //generating new speed for ball, when it collides to blocker
285.         //deviding by 4 so that we can get more variations in speed
286.         speed = Random .Range (16, 44)/4;
287.     }
288.  
289.     void CreateAtStart(int amount){
290.         //this function creates given amount of tile when game starts
291.  
292.         for (int i = 0; i < amount ; i++){
293.             GameObject tmp = recycledTileX[recycledTileX.Count-1];
294.             recycledTileX.Remove(tmp );
295.  
296.  
297.             tmp.transform.position = currentTileX[currentTileX.Count - 1].transform.GetChild(0).transform.GetChild (1).transform.position;
298.             currentTileX .Add( tmp);
299.  
300.             int spawnPickUp = Random.Range (0, 10);
301.  
302.             if (spawnPickUp == 0) {
303.                 currentTileX[currentTileX.Count - 1]. transform.GetChild(2).gameObject.SetActive(true);
304.             }
305.  
306.             if(i == amount -1){
307.                 tmp.transform.GetChild (1).gameObject.SetActive(true);
308.             }
309.         }
310.         tileGenerateSpeed = .3f;
311.         StartCoroutine(TileWakeUp());
312.     }
313.  
314.     //this function genaarates new tiles when ball is on X tile or on Y tile
315.     //plays animations for tile opening and closing
316.     //hanles seperately, when it is on X or Y tile
317.     //decides where to keep new blocker on tile
318.  
319.     public void ActivateTiles(int amount){
320.         //if tile amount which we generated is not enough
321.  
322.         if (recycledTileX.Count < 15 || recycledTileY.Count < 15 ) {
323.             CreateTiles(10);
324.             Debug.Log ("generating extra 10 tiles");
325.         }
326.  
327.         //when ball is on Y tile and ball is colliding to Y tile blocker first time
328.  
329.         if(onYTile && generateTile){
330.  
331.             //generating a new speed for ball
332.             ManageSpeed();
333.             if(currentTileX.Count != 0){
334.                 if(currentTileX.Count != 0){
335.                 for(int i = 0; i < currentTileX.Count; i++){
336.  
337.                         //deactivating previous tiles (X tiles because ball is on Y tile now)
338.  
339.                     if(currentTileX[currentTileX.Count - 1-i].transform.GetChild(1).gameObject.activeSelf){
340.                         currentTileX[currentTileX.Count - 1-i].transform.GetChild(1).gameObject.SetActive(false);
341.                     }
342.                         //running tile close animation
343.  
344.                         closeAnimX.Add (currentTileX [currentTileX.Count - i - 1]);
345.                 }
346.  
347.             }
348.                 StartCoroutine (DeactivateXTile ());
349.  
350.                 //clearing currentTileX so that we can keep new X tiles in it
351.                 currentTileX.Clear();
352.             }
353.             // choosing a random tile to activate blocker on tile
354.  
355.             int randomBlockNumber = Random.Range(0, currentTileY.Count -3);
356.             int randomTileNumber = Random.Range(randomBlockNumber + 1, currentTileY.Count -1);
357.  
358.             //setting a random blocker active on tile
359.             currentTileY[randomBlockNumber].transform.GetChild (1).gameObject.SetActive (true);
360.             GameObject tmp = recycledTileX[recycledTileX.Count - 1];
361.             recycledTileX.Remove (tmp);
362.          
363.             //setting a random Y tile position to  new X tile
364.  
365.             tmp.transform.position = currentTileY[randomTileNumber].transform.GetChild (0).transform.GetChild (1).transform.position;
366.  
367.             //adding that X tile to currentTileX
368.             currentTileX.Add(tmp);
369.  
370.             for(int i = 0; i < amount; i++){
371.                 tmp = recycledTileX[recycledTileX.Count - 1];
372.                 recycledTileX.Remove (tmp);
373.              
374.                 //genarating new X tiles on next to last tile position
375.  
376.                 tmp.transform.position = currentTileX[currentTileX.Count - 1].transform.GetChild (0).transform.GetChild (1).transform.position;
377.      
378.                 currentTileX.Add(tmp);
379.              
380.                 if(i == amount-1){
381.                     tmp.transform.GetChild (1).gameObject.SetActive (true);
382.                 }
383.  
384.                 int spawnPickUp = Random.Range (0, 10);
385.                 //setting a coin active if random number matches to zero for every tiles
386.  
387.                 if (spawnPickUp == 0) {
388.                     currentTileX[currentTileX.Count - 1]. transform.GetChild(2).gameObject.SetActive(true);
389.                 }
390.             }
391.             //running tile open animation
392.  
393.             StartCoroutine (WakeUpWOnY());
394.             generateTile = false;
395.             camMoved = false;
396.         }
397.  
398.         //same as above, just at place of Y tile ball is on X tile
399.  
400.         if(onXTile && generateTile){
401.  
402.             //when ball is on X tile and ball is colliding to Y tile blocker first time
403.             if(currentTileY.Count != 0){
404.                 //generating a new speed for ball
405.                 ManageSpeed();
406.  
407.                 for(int i = 0; i < currentTileY.Count; i++){
408.  
409.                     if(currentTileY.Count != 0){
410.                     if(currentTileY[currentTileY.Count - 1-i].transform.GetChild(1).gameObject.activeSelf){
411.                  
412.                             //deactivating previous tiles (Y tiles because ball is on X tile now)
413.                             currentTileY[currentTileY.Count - 1-i].transform.GetChild(1).gameObject.SetActive(false);
414.                 }
415.  
416.              
417.                         closeAnimY.Add (currentTileY [currentTileY.Count - i - 1]);
418.                     }
419.                 }
420.                 StartCoroutine (DeactivateYTile ());
421.  
422.                 //clearing currentTileY so that we can keep new Y tiles in it
423.                 currentTileY.Clear();
424.             }
425.  
426.             // choosing a random tile to activate blocker on tile
427.             int randomBlockNumber = Random.Range(0, currentTileX.Count -3);
428.             int randomTileNumber = Random.Range(randomBlockNumber +1 , currentTileX.Count -1);
429.             //setting a random blocker active on tile
430.  
431.             currentTileX[randomBlockNumber].transform.GetChild (1).gameObject.SetActive (true);
432.             GameObject tmp = recycledTileY[recycledTileY.Count - 1];
433.             recycledTileY.Remove (tmp);
434.  
435.             //setting a random X tile position to  new Y tile
436.  
437.             tmp.transform.position = currentTileX[randomTileNumber].transform.GetChild (0).transform.GetChild (0).transform.position;
438.  
439.             //adding that Y tile to currentTileY
440.             currentTileY.Add(tmp);
441.  
442.             for(int i = 0; i < amount; i++){
443.                 tmp = recycledTileY[recycledTileY.Count - 1];
444.                 recycledTileY.Remove (tmp);
445.          
446.                 //genarating new X tiles on next to last tile position
447.                 tmp.transform.position = currentTileY[currentTileY.Count - 1].transform.GetChild (0).transform.GetChild (0).transform.position;
448.          
449.                 currentTileY.Add(tmp);
450.  
451.                 if(i == amount-1){
452.                     tmp.transform.GetChild (1).gameObject.SetActive (true);
453.                 }
454.                 int spawnPickUp = Random.Range (0, 10);
455.              
456.                 if (spawnPickUp == 0) {
457.                     currentTileY[currentTileY.Count - 1]. transform.GetChild(2).gameObject.SetActive(true);
458.                 }
459.             }
460.             tileGenerateSpeed = .3f;
461.             StartCoroutine (WakeUpWOnX());
462.             generateTile = false;
463.             camMoved = false;
464.         }
465.     }
466.  
467.     IEnumerator DeactivateXTile(){
468.         tileGenerateSpeed = .3f;
469.  
470.         //closing every tile by playing CloseTile animation
471.  
472.         if (closeAnimX.Count != 0) {
473.             foreach(GameObject tile in closeAnimX) {
474.  
475.                 tile .GetComponent<Animator> ().SetTrigger ("CloseTile");
476.  
477.                 if (tileGenerateSpeed > .15f) {
478.                     tileGenerateSpeed -= .1f;
479.                     yield return new WaitForSeconds (tileGenerateSpeed);
480.  
481.                 } else{
482.                     yield return new WaitForSeconds (tileGenerateSpeed);
483.                 }
484.                 recycledTileX.Add (tile);
485.             }
486.  
487.  
488.             closeAnimX.Clear ();
489.         }
490.     }
491.     IEnumerator DeactivateYTile(){
492.         tileGenerateSpeed = .3f;
493.         if (closeAnimY.Count != 0) {
494.  
495.             //closing every tile by playing CloseTile animation
496.  
497.             foreach(GameObject tile in closeAnimY) {
498.  
499.                 tile .GetComponent<Animator> ().SetTrigger ("CloseTile");
500.  
501.                 if (tileGenerateSpeed > .15f) {
502.                     tileGenerateSpeed -= .1f;
503.                     yield return new WaitForSeconds (tileGenerateSpeed);
504.  
505.                 } else{
506.                     yield return new WaitForSeconds (tileGenerateSpeed);
507.                 }
508.                 recycledTileY.Add (tile);
509.             }
510.  
511.             closeAnimY.Clear ();
512.         }
513.     }
514.  
515.     IEnumerator WakeUpWOnX(){
516.         //playing OpenTile animation for Y tile
517.  
518.         foreach (GameObject tile in currentTileY) {
519.             tile.SetActive (true);
520.                 tile.GetComponent<Animator>().SetTrigger ("OpenTile");
521.  
522.      
523.         if (tileGenerateSpeed > .15f) {
524.             tileGenerateSpeed -= .1f;
525.             yield return new WaitForSeconds (tileGenerateSpeed);
526.         } else{
527.             yield return new WaitForSeconds (tileGenerateSpeed);
528.         }
529.  
530.         }
531.     }
532.     IEnumerator WakeUpWOnY(){
533.  
534.         //playing OpenTile animation for X tile
535.         foreach (GameObject tile in currentTileX) {
536.             tile.SetActive (true);
537.             tile.GetComponent<Animator>().SetTrigger ("OpenTile");
538.      
539.             if (tileGenerateSpeed > .15f) {
540.                 tileGenerateSpeed -= .1f;
541.                 yield return new WaitForSeconds (tileGenerateSpeed);
542.             } else{
543.                 yield return new WaitForSeconds (tileGenerateSpeed);
544.             }
545.          
546.         }
547.     }
548.     IEnumerator TileWakeUp(){
549.  
550.         // handles tile open animation when game starts
551.  
552.         foreach (GameObject tile in currentTileX) {
553.             tile.SetActive (true);
554.      
555.             tile.GetComponent<Animator>().SetTrigger ("OpenTile");
556.  
557.  
558.  
559.             if (tileGenerateSpeed > .15f) {
560.                 tileGenerateSpeed -= .1f;
561.                 yield return new WaitForSeconds (tileGenerateSpeed);
562.             } else{
563.                 yield return new WaitForSeconds (tileGenerateSpeed);
564.             }
565.          
566.         }
567.     }
568.  
569.  
570.  
571.  
572.  
573. }
574.  
575.  

 

Well, first off.. wow, glad I had this link still open in another tab!
Please read this page for how to insert code properly on the forums: https://forum.unity.com/threads/using-code-tags-properly.143875/

Next, please specify which line has the error based on the line # that will show up when you paste your code properly.
Next, please do not paste 5,000 lines of code if 50 are sufficient.

 

I will try to keep that in mind
added the code tag
As for the number of lines, I do not know what lines are causing the problem. Therefore logic demands that I post the entire script. If I post the wrong lines then I would not get the help I seek.
I seldom post because I seldom need help.
If anyone has any information on this I would be grateful.

 

Okay, I would check that those transform children exist? There's always a child, then at least 2 children on that child?

 

I have checked for duplicate children and for children that are not where they should be.
It all seems to be the way I last opened it in an older version of unity.
I upgraded to the latest version and this is what I got when I opened it next.

 

Not sure what could be wrong. You can check each transform (instead of that long line of code) to ensure they're all valid & where it breaks?

 

I am not sure what has changed from old version to new version of unity. Since it did work before, and now does not, I am lead to believe that something has changed with unity as I did not alter the script initially. That puts me at a disadvantage. For instance, I cannot seem to find a statement that is shorter than this one that does the same thing.

Code (csharp):

1.  
2. [LIST=1]
3. [*]tmp.transform.position = currentTileX[currentTileX.Count - 1].transform.GetChild(0).transform.GetChild (1).transform.position;
4. [*]            currentTileX .Add( tmp);
5. [/LIST]
6.  

I also cannot seem figure out an alternate for this statement.

Code (csharp):

1.  
2. void CreateAtStart(int amount)
3.  

I can usually figure things out given time but this has really got me stumped. Because I do not devote a lot of time to working with it as I work much of the time. Short on time and understanding of this particular process. I have a feeling that I may need to simply start from scratch. Was just hoping to actually finish a game. Hobbies can be a cruel mistress.