Project modernization (#630)

* Fixed boats falling and a TP glitch #266

* Replaced every C-style cast with C++ ones

* Replaced every C-style cast with C++ ones

* Fixed boats falling and a TP glitch #266

* Updated NULL to nullptr and fixing some type issues

* Modernized and fixed a few bugs

- Replaced most instances of `NULL` with `nullptr`.
- Replaced most `shared_ptr(new ...)` with `make_shared`.
- Removed the `nullptr` macro as it was interfering with the actual nullptr keyword in some instances.

* Fixing more conflicts

* Replace int loops with size_t and start work on overrides

Minecraft.Client/PS3/SPU_Tasks/ChunkUpdate/HalfSlabTile_SPU.cpp

@@ -3,7 +3,7 @@
 #include "Facing_SPU.h"
 #include "ChunkRebuildData.h"
 
-void HalfSlabTile_SPU::updateShape(ChunkRebuildData *level, int x, int y, int z, int forceData /* = -1 */, TileEntity* forceEntity /* = NULL */)
+void HalfSlabTile_SPU::updateShape(ChunkRebuildData *level, int x, int y, int z, int forceData /* = -1 */, TileEntity* forceEntity /* = nullptr */)
 {
 	if (fullSize()) 
 	{