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/ClockItem.cpp

@@ -12,7 +12,7 @@ const wstring ClockItem::TEXTURE_PLAYER_ICON[XUSER_MAX_COUNT] = {L"clockP0",L"cl
 
 ClockItem::ClockItem(int id) : Item(id)
 {
-	icons = NULL;
+	icons = nullptr;
 }
 
 // 4J Added so that we can override the icon id used to calculate the texture UV's for each player
@@ -21,7 +21,7 @@ Icon *ClockItem::getIcon(int auxValue)
 	Icon *icon = Item::getIcon(auxValue);
 	Minecraft *pMinecraft = Minecraft::GetInstance();
 
-	if( pMinecraft->player != NULL && auxValue == 0 )
+	if( pMinecraft->player != nullptr && auxValue == 0 )
 	{
 		icon = icons[pMinecraft->player->GetXboxPad()];
 	}