Modernize project codebase (#906)

* 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

* Add safety checks and fix a issue with vector going OOR

Minecraft.World/ConsoleSaveFile.h

@@ -23,7 +23,7 @@ public:
 	virtual void Flush(bool autosave, bool updateThumbnail = true) = 0;
 
 #ifndef _CONTENT_PACKAGE
-	virtual void DebugFlushToFile(void *compressedData = NULL, unsigned int compressedDataSize = 0) = 0;
+	virtual void DebugFlushToFile(void *compressedData = nullptr, unsigned int compressedDataSize = 0) = 0;
 #endif
 	virtual unsigned int getSizeOnDisk() = 0;
 	virtual wstring getFilename() = 0;
@@ -53,5 +53,5 @@ public:
 	virtual void ConvertRegionFile(File sourceFile) = 0;
 	virtual void ConvertToLocalPlatform() = 0;
 
-	virtual void *getWritePointer(FileEntry *file) { return NULL; }
+	virtual void *getWritePointer(FileEntry *file) { return nullptr; }
 };