1 files changed, 5 insertions, 3 deletions
diff --git a/src/systems/physics.js b/src/systems/physics.js
index a49edca..d72b1a0 100644
--- a/src/systems/physics.js
+++ b/src/systems/physics.js
@@ -1,7 +1,7 @@
 game.system.Physics = () => {
-  const update = (elapsedTime) => {
-    for (let id in game.entities) {
-      const entity = game.entities[id];
+  const update = (elapsedTime, entities, changedIds) => {
+    for (let id in entities) {
+      const entity = entities[id];
       if (entity.hasComponent("momentum") && entity.hasComponent("appearance")) {
         const {dx, dy} = entity.components.momentum;
         entity.components.position.x += dx * elapsedTime;
@@ -9,6 +9,8 @@ game.system.Physics = () => {
         entity.components.position = clamp(entity.components.position, game.canvas.width - entity.components.appearance.width, game.canvas.height - entity.components.appearance.height);
       }
     }
+
+    return new Set();
   }
   return { update };
 }
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