From f643f0afb8c7d91a7a39ff96f58b95baac985ce0 Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <me@liz.coffee>
Date: Sat, 7 Mar 2026 15:01:14 -0800
Subject: Some really good refactoring happening in here

---
 core/src/main/java/coffee/liz/ecs/DAGWorld.java        | 7 +++++++
 core/src/main/java/coffee/liz/ecs/events/EventBus.java | 9 +++------
 core/src/main/java/coffee/liz/ecs/model/Query.java     | 4 ----
 core/src/main/java/coffee/liz/ecs/model/World.java     | 2 ++
 4 files changed, 12 insertions(+), 10 deletions(-)

(limited to 'core/src/main/java/coffee/liz/ecs')

diff --git a/core/src/main/java/coffee/liz/ecs/DAGWorld.java b/core/src/main/java/coffee/liz/ecs/DAGWorld.java
index f941dba..f9801c2 100644
--- a/core/src/main/java/coffee/liz/ecs/DAGWorld.java
+++ b/core/src/main/java/coffee/liz/ecs/DAGWorld.java
@@ -34,6 +34,7 @@ public class DAGWorld implements World {
     protected final Map<Class<? extends System>, System> systems;
     private final List<System> systemExecutionOrder;
     private final QueryBuilder queryBuilder = new QueryBuilder(this);
+    private float elapsedTime = 0f;
 
     public DAGWorld(final System... systems) {
         this.systems = singletonClazzMap(systems);
@@ -74,9 +75,15 @@ public class DAGWorld implements World {
 
     @Override
     public void update(final float deltaSeconds) {
+        elapsedTime += deltaSeconds;
         systemExecutionOrder.forEach(system -> system.update(this, deltaSeconds));
     }
 
+    @Override
+    public float getTime() {
+        return elapsedTime;
+    }
+
     @SuppressWarnings("unchecked")
     @Override
     public <S extends System> S getSystem(final Class<S> system) {
diff --git a/core/src/main/java/coffee/liz/ecs/events/EventBus.java b/core/src/main/java/coffee/liz/ecs/events/EventBus.java
index d814281..1ed04c5 100644
--- a/core/src/main/java/coffee/liz/ecs/events/EventBus.java
+++ b/core/src/main/java/coffee/liz/ecs/events/EventBus.java
@@ -28,13 +28,10 @@ public class EventBus<E> {
     /**
      * Remove a previously registered hook.
      *
-     * @param hook
-     *            callback to remove
-     * @return true
-     *            if the hook was removed.
+     * @param hook callback to remove
      */
-    public boolean unsubscribe(final Consumer<E> hook) {
-        return subscriptions.remove(hook);
+    public void unsubscribe(final Consumer<E> hook) {
+        subscriptions.remove(hook);
     }
 
     /**
diff --git a/core/src/main/java/coffee/liz/ecs/model/Query.java b/core/src/main/java/coffee/liz/ecs/model/Query.java
index 679ea49..8b52d42 100644
--- a/core/src/main/java/coffee/liz/ecs/model/Query.java
+++ b/core/src/main/java/coffee/liz/ecs/model/Query.java
@@ -5,10 +5,6 @@ import java.util.Set;
 import java.util.stream.Collectors;
 
 public record Query(Set<Class<? extends Component>> queryingComponents, QueryFilter filter) {
-    public Query {
-        queryingComponents = Set.copyOf(queryingComponents);
-    }
-
     @SafeVarargs
     public static Query allOf(final Class<? extends Component>... components) {
         return new Query(Arrays.stream(components).collect(Collectors.toSet()), QueryFilter.ALL_OF);
diff --git a/core/src/main/java/coffee/liz/ecs/model/World.java b/core/src/main/java/coffee/liz/ecs/model/World.java
index 63335c8..88602fc 100644
--- a/core/src/main/java/coffee/liz/ecs/model/World.java
+++ b/core/src/main/java/coffee/liz/ecs/model/World.java
@@ -15,6 +15,8 @@ public interface World {
 
     void update(float deltaSeconds);
 
+    float getTime();
+
     <S extends System> S getSystem(Class<S> system);
 
     default void dispose() {
-- 
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