The algorithm was designed so All portals must be facing the center, no matter which block had the eye inserted in last.
Note: Still need to create a block entity so that portals don't become invisible when you relog.
Addresses part of #3445Fixes#3695
* Replaces AppendVPrintf with fmt::sprintf
* fmt::ArgList now used as a type safe alternative to varargs.
* Removed SIZE_T_FMT compatibility macros. fmt::sprintf is fully portable and supports %zu.
* Adds FLOG functions to log with fmt's native formatting style.
Adds a block handler for concrete powder and implements hardening to concrete.
Concrete powder turns into concrete when:
* It is next to water when it receives a block update
* It falls onto a water block (even with Physics SandInstantFall=1)
* Check for intersection between placed blocks and entities.
+ Implemented GetPlacementCollisionBox, to permit custom placement collision boxes for blocks.
* Factored block-entity placement checking into another function in cPlayer.
- Removed vector min/max functions
* Use GetWorld to get the world in DoesPlacingBlocksIntersectEntity.
+ Added block height checks, allow different cEntity subclasses to decide whether they will prevent block placement.
