The issue with stacking objects in votv is that all items are kinda "unique", some objects carry too much unique variables like Float values, strings etc, so i cant use Minecraft method of stacking. I can mark some items unstackable like batteries, paper, labeled items etc, and keep food and trash stackable.
And no, it displays the volume of one item, i will implement this in the next patch or smth
Viewing post in Voices of the Void 0.7 feedback
Speaking of stacking, a possible workaround (and general upgrade), specifically for food would be to create object variants for food at different "bite remaining" levels. A good start would be same model, lower weight, to make opened containers distinguishable from unopened ones. I'm not sure how your game handles items, but a variant variable (from which weight and mesh/model are derived) would be perfect for this.
Let me know your thoughts, i'd love to contribute.