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/Common/Colours/ColourTable.cpp

@@ -325,7 +325,7 @@ void ColourTable::staticCtor()
 {
 	for(unsigned int i = eMinecraftColour_NOT_SET; i < eMinecraftColour_COUNT; ++i)
 	{
-		s_colourNamesMap.insert( unordered_map<wstring,eMinecraftColour>::value_type( ColourTableElements[i], (eMinecraftColour)i) );
+		s_colourNamesMap.insert( unordered_map<wstring,eMinecraftColour>::value_type( ColourTableElements[i], static_cast<eMinecraftColour>(i)) );
 	}
 }
 
@@ -366,7 +366,7 @@ void ColourTable::setColour(const wstring &colourName, int value)
 	auto it = s_colourNamesMap.find(colourName);
 	if(it != s_colourNamesMap.end())
 	{
-		m_colourValues[(int)it->second] = value;
+		m_colourValues[static_cast<int>(it->second)] = value;
 	}
 }
 
@@ -377,5 +377,5 @@ void ColourTable::setColour(const wstring &colourName, const wstring &value)
 
 unsigned int ColourTable::getColour(eMinecraftColour id)
 {
-	return m_colourValues[(int)id];
+	return m_colourValues[static_cast<int>(id)];
 }