# Iterate sprites in group and remove a selection of certain enemy sprites?

**URL:** <https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505>\
**Category:** Phaser 3\
**Created:** [September 26, 2020, 10:26am UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505 "2020-09-26T10:26:37Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![BdR](https://yyz2.discourse-cdn.com/free1/user_avatar/phaser.discourse.group/bdr/32/2621_2.png) [@BdR](https://phaser.discourse.group/u/BdR)\
**Post date:** [September 26, 2020, 10:26am UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505/1 "2020-09-26T10:26:37Z")

</div>

I’m working on a snake-type game where the player can eat apples and has to avoid walls. I’ve put all the game object in a `Phaser.group` and during the game it will typically contain something like this:

```
_grpObject.list
0. sprite frame "appl" (data obj_type = 1)
1. sprite frame "wall" (data obj_type = 99)
2. sprite frame "gate" (data obj_type = 50) (first gate)
3. sprite frame "gate" (data obj_type = 50) (second gate)
4. sprite frame "wall" (data obj_type = 99)
etc.

```

When the player grabs a key item it should unlock all gates, i.e. remove all gate items from the group.  
So I’ve tried this code:

```
// remove all GATE sprites from group
this._grpObject.iterate(function (spr) {
	if (spr.data.get("obj_type") == 50) {
		this._grpObject.remove(spr);
	};
}.bind(this));

```

However, the result is that not all “gate” sprites are removed, there still are some left. The example result will look like this:

```
_grpObject.list
0. sprite frame "appl" (data obj_type = 1)
1. sprite frame "wall" (data obj_type = 99)
2. sprite frame "gate" (data obj_type = 50) (second gate)
3. sprite frame "wall" (data obj_type = 99)
etc.

```

This is an example, but in a larger list of items every other gate is removed, so when there are consecutive “gate” sprites it will remove one, then skip one, remove one etc.

I understand that the cause of this, is that it is iterating over the indexes of the items and removing items will change the indexes. However, I don’t know what is the best way do this.

So, what is the best way to iterate over all sprites in a group and remove only certain sprites?

---

<div class="post-metadata">

**Author:** ![Milton](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@Milton](https://phaser.discourse.group/u/Milton)\
**Post date:** [September 26, 2020, 10:34am UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505/2 "2020-09-26T10:34:36Z")

</div>

Iterate backwards.

---

<div class="post-metadata">

**Author:** ![BdR](https://yyz2.discourse-cdn.com/free1/user_avatar/phaser.discourse.group/bdr/32/2621_2.png) [@BdR](https://phaser.discourse.group/u/BdR)\
**Post date:** [September 26, 2020, 11:06am UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505/3 "2020-09-26T11:06:59Z")

</div>

Sometimes the solution is so simple 😃 LOL

I’ve changed my code to this and that works:

```
// remove all GATE sprites from group
for (var i = this._grpObject.list.length-1; i >= 0; i--) {
	var spr = this._grpObject.list[i];
	if (spr.data.get("obj_type") == 50) {
		this._grpObject.remove(spr);
	};
};
```

---

<div class="post-metadata">

**Author:** ![Milton](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@Milton](https://phaser.discourse.group/u/Milton)\
**Post date:** [September 26, 2020, 11:12am UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505/4 "2020-09-26T11:12:59Z")

</div>

🙂

Btw, I was writing some keyboard handling, and read [this](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code), which addresses the AZERTY question I seem to recall you had…

---

<div class="post-metadata">

**Author:** ![BdR](https://yyz2.discourse-cdn.com/free1/user_avatar/phaser.discourse.group/bdr/32/2621_2.png) [@BdR](https://phaser.discourse.group/u/BdR)\
**Post date:** [September 26, 2020, 12:14pm UTC](https://phaser.discourse.group/t/iterate-sprites-in-group-and-remove-a-selection-of-certain-enemy-sprites/7505/5 "2020-09-26T12:14:33Z")

</div>

@Milton I saw your link and I don’t quite understand the differences betwen `code`, `key`, `keyCode` properties in JavaScript, but anyway I have just [replied here](https://phaser.discourse.group/t/keyboard-codes-for-input-wasd-vs-zqsd-on-azerty-keyboard/7237/9).