1 files changed, 14 insertions, 0 deletions
diff --git a/engine/structures/RefreshingCollisionFinderBehavior.ts b/engine/structures/RefreshingCollisionFinderBehavior.ts
new file mode 100644
index 0000000..573ddd8
--- /dev/null
+++ b/engine/structures/RefreshingCollisionFinderBehavior.ts
@@ -0,0 +1,14 @@
+import type { Coord2D, Dimension2D } from '../interfaces';
+
+export interface BoxedEntry {
+  id: string;
+  dimension: Dimension2D;
+  center: Coord2D;
+}
+
+export interface RefreshingCollisionFinderBehavior {
+  clear(): void;
+  insert(boxedEntry: BoxedEntry): void;
+  getNeighborIds(boxedEntry: BoxedEntry): Set<string>;
+  setTopLeft(topLeft: Coord2D): void;
+}