Item drops/pickups

[ForLoveOfCats]

Items need to be able to be:

• [x] Dropped on the ground
• [x] Sliding physics
• [x] Networked dropping
• [x] Net load on world load
• [x] Picked up (and added to the player's inventory)
• [x] Networked picking up
• [ ] Stacked when on the ground (automatically grouped together as a single bundle when close enough together)

And of course this all has to be network safe

[ForLoveOfCats]

Very basic dropping https://github.com/ForLoveOfCats/SkyOfSteel/commit/a6d43ef27ec125823084480c836d194b1c9ce87c

No pickup, physics, and not networked

[ForLoveOfCats]

The physics are pretty much good. They take into account the player momentum, look angle, and can slide on slopes.

[ForLoveOfCats]

The grid updating system was added in and is now used to re-enable physics on dropped items when the Structure they are resting on is destroyed.

[ForLoveOfCats]

Items are now referenced in the ChunkClass instance for the chunk they are in (and updates this information when moving between chunks). This is so that the chunk can be used to determine if a dropped item should be network loaded/unloaded.

[ForLoveOfCats]

Proper sliding physics as of https://github.com/ForLoveOfCats/SkyOfSteel/commit/07a4815f1cf3a2cba667fd1f66d62e0dbaea715e

[ForLoveOfCats]

Picking items up was added with https://github.com/ForLoveOfCats/SkyOfSteel/commit/e41e7a20527d4023d7873f5934aa765b3df091d3 and works in multiplayer

[ForLoveOfCats]

Items clumping together on the ground will be done after 0.1.2

Marking this as completed