IteratingSystem

Processes all entities matching an Aspect iteratively when World ticks.

public class CookieBakingSystem extends IteratingSystem {
	ComponentMapper<Baked> mBaked; // injected automatically.

	public CookieBakingSystem() {               
		super(Aspect.all(Cookie.class).exclude(Baked.class)); 
		// match all unbaked cookies.
	}

	/* called for each matching entity. */
	@Override
	protected void process(int e) {
		mBaked.create(e); // bake cookie! (adds Bake component if missing)
	}
}

Execution flow

Override the following methods in your EntityProcessingSystem to integrate your game logic.

• initialize() - Manually initialize. (odb injects what you need, see @Wire!)
• begin() - Called before the entities are processed.

• process(int e) - Called for every Aspect matching entity.

• end() - Called after the entities have been processed.
• inserted(int e) - entity matches composition (created or altered).
• removed(int e) - entity lost composition (deleted or altered).