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.World/CompoundTag.h

@@ -123,14 +123,14 @@ public:
 
 	void putBoolean(const wstring &name, bool val)
 	{
-		putByte(name, val?(byte)1:0);
+		putByte(name, val?static_cast<byte>(1):0);
 	}
 
 	Tag *get(const wstring &name)
 	{
 		auto it = tags.find(name);
 		if(it != tags.end()) return it->second;
-		return NULL;
+		return nullptr;
 	}
 
 	bool contains(const wstring &name)
@@ -141,19 +141,19 @@ public:
 	byte getByte(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return (byte)0;
-		return ((ByteTag *) tags[name])->data;
+		return static_cast<ByteTag *>(tags[name])->data;
 	}
 
 	short getShort(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return (short)0;
-		return ((ShortTag *) tags[name])->data;
+		return static_cast<ShortTag *>(tags[name])->data;
 	}
 
 	int getInt(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return (int)0;
-		return ((IntTag *) tags[name])->data;
+		return static_cast<IntTag *>(tags[name])->data;
 	}
 
 	int64_t getLong(const wstring &name)
@@ -164,44 +164,44 @@ public:
 
 	float getFloat(const wstring &name)
 	{
-		if (tags.find(name) == tags.end()) return (float)0;
-		return ((FloatTag *) tags[name])->data;
+		if (tags.find(name) == tags.end()) return static_cast<float>(0);
+		return static_cast<FloatTag *>(tags[name])->data;
 	}
 
 	double getDouble(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return (double)0;
-		return ((DoubleTag *) tags[name])->data;
+		return static_cast<DoubleTag *>(tags[name])->data;
 	}
 
 	wstring getString(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return wstring( L"" );
-		return ((StringTag *) tags[name])->data;
+		return static_cast<StringTag *>(tags[name])->data;
 	}
 
 	byteArray getByteArray(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return byteArray();
-		return ((ByteArrayTag *) tags[name])->data;
+		return static_cast<ByteArrayTag *>(tags[name])->data;
 	}
 
 	intArray getIntArray(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return intArray();
-		return ((IntArrayTag *) tags[name])->data;
+		return static_cast<IntArrayTag *>(tags[name])->data;
 	}
 
 	CompoundTag *getCompound(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return new CompoundTag(name);
-		return (CompoundTag *) tags[name];
+		return static_cast<CompoundTag *>(tags[name]);
 	}
 
 	ListTag<Tag> *getList(const wstring &name)
 	{
 		if (tags.find(name) == tags.end()) return new ListTag<Tag>(name);
-		return (ListTag<Tag> *) tags[name];
+		return static_cast<ListTag<Tag> *>(tags[name]);
 	}
 
 	bool getBoolean(const wstring &string)
@@ -271,7 +271,7 @@ public:
 	{
 		if (Tag::equals(obj))
 		{
-			CompoundTag *o = (CompoundTag *) obj;
+			CompoundTag *o = static_cast<CompoundTag *>(obj);
 
 			if(tags.size() == o->tags.size())
 			{