Refactor physics

backend/src/physics/physical.ts

@@ -0,0 +1,13 @@
+import { vec2 } from 'gl-matrix';
+import { GameObject } from 'shared';
+import { BoundingBoxBase } from './bounding-boxes/bounding-box-base';
+
+export interface Physical {
+  readonly isInverted: boolean;
+  readonly canCollide: boolean;
+  readonly canMove: boolean;
+  readonly boundingBox: BoundingBoxBase;
+  readonly gameObject: GameObject;
+
+  distance(target: vec2): number;
+}