Update on progress

Since my previous post on Wednesday, the following has been added/updated:

Persistence:
The world is now loaded correctly from the saved game
The player's previous position in world is loaded from the saved game

Blocks:
The removed blocks now spawn the icon blocks, which bounce and rotate until collected. The blocks detect the nearby player, and move towards the player to be collected, similar to how it is done in Minecraft and Terraria.

Inventory:
The inventory is saved and loaded correctly
It is possible to click/move/place items within the slots in the inventory
Items stack in inventory per slot. Once a slot reaches its maximum stack amount, the next free slot is used.
Removed blocks attempt to place in the hotbar first, similar to how it is done in Minecraft and Terraria.

A screenshot showing the stacking in the inventory:

Note: The items themselves, with textures and attributes will be added after the movement code is finished in a day or two.