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Android game rpg inventory system

Still stuck on making my rpg in java, there’s one method I don’t know how to implement. Right now, I want to make an inventory checker for the game, like for example it checks how many herbs are in my pack…how many candies I have in my pack and so on.

How can I implement an inventory for my game and how can I show the players what items are in the inventory present?

Is contains method necessary?

Answer 1

I implemented an inventory in my Java game Tyrant many years ago which you might find useful.

Most of the code is in the “Thing” class, which implement an inventory:

https://github.com/mikera/tyrant/blob/master/src/main/java/mikera/engine/Thing.java

Key things to consider:

• An ArrayList or a single is pretty much all you need in terms of data structure to represent an inventory.
• You may want to “stack” multiples of the same item into a single item with a count. If you do this then you need to search the inventory for similar items when you add a new Thing, and increment the count if found. You also need all possible inventory objects to implement a “count” property or similar (which is just 1 for single items)