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cleanup physic bodies

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Quillraven
2025-05-25 21:51:46 +02:00
parent 68e5da62a6
commit 4fa076d0a7
2 changed files with 43 additions and 0 deletions
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2
core/src/main/java/io/github/com/quillraven/screen/GameScreen.java
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@@ -9,6 +9,7 @@ import com.badlogic.gdx.physics.box2d.World;
import com.badlogic.gdx.utils.Disposable;
import io.github.com.quillraven.GdxGame;
import io.github.com.quillraven.asset.MapAsset;
import io.github.com.quillraven.system.CleanupSystem;
import io.github.com.quillraven.system.PhysicDebugRenderSystem;
import io.github.com.quillraven.system.RenderSystem;
import io.github.com.quillraven.system.TiledServiceTestSystem;
@@ -32,6 +33,7 @@ public class GameScreen extends ScreenAdapter {
// add ECS systems
this.engine.addSystem(new RenderSystem(game.getBatch(), game.getViewport(), game.getCamera()));
this.engine.addSystem(new CleanupSystem());
this.engine.addSystem(new TiledServiceTestSystem(this.tiledService));
this.engine.addSystem(new PhysicDebugRenderSystem(this.physicWorld, game.getCamera()));
}

41
core/src/main/java/io/github/com/quillraven/system/CleanupSystem.java Normal file
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@@ -0,0 +1,41 @@
package io.github.com.quillraven.system;
import com.badlogic.ashley.core.Engine;
import com.badlogic.ashley.core.Entity;
import com.badlogic.ashley.core.EntityListener;
import com.badlogic.ashley.core.EntitySystem;
import com.badlogic.ashley.core.Family;
import com.badlogic.gdx.physics.box2d.Body;
import io.github.com.quillraven.component.Physic;
public class CleanupSystem extends EntitySystem implements EntityListener {
@Override
public void addedToEngine(Engine engine) {
super.addedToEngine(engine);
engine.addEntityListener(Family.all(Physic.class).get(), this);
}
@Override
public void removedFromEngine(Engine engine) {
super.removedFromEngine(engine);
engine.removeEntityListener(this);
}
@Override
public void entityAdded(Entity entity) {
}
@Override
public void entityRemoved(Entity entity) {
// !!! Important !!!
// This does not work if the Physic component gets removed from an entity
// because the component is no longer accessible here.
// This ONLY works when an entity with a Physic component gets removed entirely from the engine.
Physic physic = Physic.MAPPER.get(entity);
if (physic != null) {
Body body = physic.body();
body.getWorld().destroyBody(body);
}
}
}