CollisionProspect memory use

What happened?

There are a weird number of CollisionProspect objects when you have a minimal game. I think we can count it a bug. And I think it causes a lot of GC calls as a result

It was tested with flame `1.21.0` (latest at the moment)

This is how the game looks like:

What do you expect?

I expect to have less amount of instances in my memory when I have a game with only 3 components.

How can we reproduce this?

Please run the below code snippet it only adds a player (blue color) and 2 enemies (red color)
Now the player moves along the x-axis to hit the enemies (they all have hitboxes).
After a short time (4, 5 seconds) open the Devtools -> Memory, then you will see that we have more than 1k instances of CollisionProspect object

Also I think the instances count of the other object (called _OrderedSetIterator) is not reasonable

main.dart

```dart import 'package:flame/collisions.dart'; import 'package:flame/components.dart'; import 'package:flame/effects.dart'; import 'package:flame/game.dart'; import 'package:flutter/material.dart'; void main() { runApp( GameWidget(game: MemoryTestGame()), ); } class MemoryTestGame extends FlameGame with HasCollisionDetection { @override void onLoad() { super.onLoad(); add(Player(Vector2(100, 200))); add(Enemy(Vector2(200, 200))); add(Enemy(Vector2(300, 200))); } } class Player extends CircleComponent { Player(Vector2 position) : super( radius: 30, position: position, paint: Paint()..color = Colors.blue, anchor: Anchor.center, ); late double _movingTo; @override Future onLoad() { add(CircleHitbox( collisionType: CollisionType.active, )); add(MoveByEffect( Vector2(400, 0), EffectController( duration: 3, infinite: true, alternate: true, ), )); _movingTo = 400; return super.onLoad(); } } class Enemy extends CircleComponent { Enemy(Vector2 position) : super( radius: 20, position: position, paint: Paint()..color = Colors.red, anchor: Anchor.center, ); @override Future onLoad() { add(CircleHitbox( collisionType: CollisionType.passive, )); add(ScaleEffect.by( Vector2.all(1.2), EffectController( duration: 0.5, infinite: true, alternate: true, ), )); return super.onLoad(); } } ```

What steps should take to fix this?

No response

Do have an example of where the bug occurs?

No response

Relevant log output

No response

Execute in a terminal and put output into the code block below

~ » flutter doctor -v neo@imans-mbp [✓] Flutter (Channel stable, 3.24.3, on macOS 15.0.1 24A348 darwin-arm64, locale en-US) • Flutter version 3.24.3 on channel stable at /Users/neo/Dev/flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 2663184aa7 (5 weeks ago), 2024-09-11 16:27:48 -0500 • Engine revision 36335019a8 • Dart version 3.5.3 • DevTools version 2.37.3

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0) • Android SDK at /Users/neo/Library/Android/sdk • Platform android-34-ext8, build-tools 34.0.0 • ANDROID_HOME = /Users/neo/Library/Android/sdk • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 17.0.11+0-17.0.11b1207.24-11852314) • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.0) • Xcode at /Applications/Xcode.app/Contents/Developer • Build 16A242d • CocoaPods version 1.15.2

[✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2024.1) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 17.0.11+0-17.0.11b1207.24-11852314)

[✓] IntelliJ IDEA Community Edition (version 2024.2.3) • IntelliJ at /Users/neo/Applications/IntelliJ IDEA Community Edition.app • Flutter plugin version 82.0.3 • Dart plugin version 242.22855.32

[✓] VS Code (version 1.94.2) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.98.0

[✓] Connected device (4 available) • Iman’s iPhone (mobile) • 00008030-000E21EA0EA1802E • ios • iOS 17.6.1 21G93 • macOS (desktop) • macos • darwin-arm64 • macOS 15.0.1 24A348 darwin-arm64 • Mac Designed for iPad (desktop) • mac-designed-for-ipad • darwin • macOS 15.0.1 24A348 darwin-arm64 • Chrome (web) • chrome • web-javascript • Google Chrome 130.0.6723.58

[✓] Network resources • All expected network resources are available.

• No issues found!

Affected platforms

All, macOS

Other information

I just tested it in my macOS

Are you interested in working on a PR for this?

[ ] I want to work on this

flame-engine / flame