1 files changed, 35 insertions, 0 deletions
diff --git a/client/lib/systems/WallBounds.ts b/client/lib/systems/WallBounds.ts
new file mode 100644
index 0000000..3fd5dc4
--- /dev/null
+++ b/client/lib/systems/WallBounds.ts
@@ -0,0 +1,35 @@
+import { System, SystemNames } from ".";
+import { BoundingBox, ComponentNames } from "../components";
+import type { Entity } from "../entities";
+
+export class WallBounds extends System {
+  private screenWidth: number;
+
+  constructor(screenWidth: number) {
+    super(SystemNames.WallBounds);
+
+    this.screenWidth = screenWidth;
+  }
+
+  public update(
+    _dt: number,
+    entityMap: Map<number, Entity>,
+    componentEntities: Map<string, Set<number>>
+  ) {
+    componentEntities.get(ComponentNames.WallBounded)?.forEach((entityId) => {
+      const entity = entityMap.get(entityId);
+      if (!entity.hasComponent(ComponentNames.BoundingBox)) {
+        return;
+      }
+
+      const boundingBox = entity.getComponent<BoundingBox>(
+        ComponentNames.BoundingBox
+      );
+
+      boundingBox.center.x = Math.min(
+        this.screenWidth - boundingBox.dimension.width / 2,
+        Math.max(boundingBox.dimension.width / 2, boundingBox.center.x)
+      );
+    });
+  }
+}