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/RedStoneDustTile_SPU.h

@@ -26,7 +26,7 @@ public:
 			case TEXTURE_CROSS_OVERLAY: return &ms_pTileData->redStoneDust_iconCrossOver;
 			case TEXTURE_LINE_OVERLAY: return &ms_pTileData->redStoneDust_iconLineOver;
 		}
-		return NULL;
+		return nullptr;
 	}
 
 	static bool shouldConnectTo(ChunkRebuildData *level, int x, int y, int z, int direction)