1 files changed, 36 insertions, 0 deletions
diff --git a/engine/systems/WallBounds.ts b/engine/systems/WallBounds.ts
new file mode 100644
index 0000000..6ea2267
--- /dev/null
+++ b/engine/systems/WallBounds.ts
@@ -0,0 +1,36 @@
+import { System, SystemNames } from ".";
+import { BoundingBox, ComponentNames } from "../components";
+import { Game } from "../Game";
+import type { Entity } from "../entities";
+import { clamp } from "../utils";
+
+export class WallBounds extends System {
+  private screenWidth: number;
+
+  constructor(screenWidth: number) {
+    super(SystemNames.WallBounds);
+
+    this.screenWidth = screenWidth;
+  }
+
+  public update(_dt: number, game: Game) {
+    game.componentEntities
+      .get(ComponentNames.WallBounded)
+      ?.forEach((entityId) => {
+        const entity = game.entities.get(entityId);
+        if (!entity.hasComponent(ComponentNames.BoundingBox)) {
+          return;
+        }
+
+        const boundingBox = entity.getComponent<BoundingBox>(
+          ComponentNames.BoundingBox
+        );
+
+        boundingBox.center.x = clamp(
+          boundingBox.center.x,
+          boundingBox.dimension.width / 2,
+          this.screenWidth - boundingBox.dimension.width / 2
+        );
+      });
+  }
+}