Interactables can be easily manipulated through the details panel in editor.
When player enters the harvestable's radius they are prompted with a bouncing prompt.
When the player interacts with the harvestable a time bar appears to show current time needed to obtain the resources. Afterwards the harvestable's inventory window pops-up. If the player moves out of the objects radius they get a disrupted message.
Players are able to click on the items to transfer to inventory. If the harvestable has no more items, the window closes. (This is also when respawning items kicks in)
Same prompt when the player is near a lootable object. The lootable will not have a 'harvest time' and will open instantly.
Players are able to click on the items to transfer to inventory. Very similar to the harvestable. Lootables can be set to respawn inventory or not.