# Inventory System / Polymorphism **URL:** \ **Category:** Blueprint\ **Tags:** unreal-engine\ **Created:** [April 21, 2017, 2:32am UTC](https://forums.unrealengine.com/t/inventory-system-polymorphism/90375 "2017-04-21T02:32:44Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![anonymous\_user\_dceb25d5](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_dceb25d5](https://forums.unrealengine.com/u/anonymous_user_dceb25d5)\ **Post date:** [April 24, 2017, 4:26pm UTC](https://forums.unrealengine.com/t/inventory-system-polymorphism/90375/6 "2017-04-24T16:26:45Z")
I use a ray trace to detect objects that the player looks at, it is more accurate than a collisions box around the object. Plus when I look at it I can change the icon to a pickup hand which adds a nice touch to it like in the game Far cry 3. Also you will notice that arrays of stucts can be somewhat of an issue if you get complex with it. I used this tutorial and expanded on it greatly, now my inventory system is legit haha… > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... --- _[View the full topic](https://forums.unrealengine.com/t/inventory-system-polymorphism/90375)._