Add camera edge clamping

Engine/src/states/Game.ts

@@ -141,7 +141,7 @@ export function GameState(ctx: ContextI): StateI {
         entity.act(desiredActions)
         // FIXME: This isn't the right place for this.
         rootContainer.position.set(Math.round(ctx.app.renderer.width/2), Math.round(ctx.app.renderer.height/2))
-        rootContainer.pivot.set(entity.x, entity.y)
+        rootContainer.pivot.set(Math.max(rootContainer.width/6, Math.min(entity.x, rootContainer.width/3)), Math.max(rootContainer.height/6, Math.min(entity.y, rootContainer.height/3)))
       }
       entity.update(delta)
     }