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/XUI/XUI_Ctrl_MobEffect.cpp

@@ -38,9 +38,9 @@ HRESULT CXuiCtrlMobEffect::OnGetSourceDataText(XUIMessageGetSourceText *pGetSour
 		pGetSourceTextData->szText = m_name.c_str();
 		pGetSourceTextData->bDisplay = TRUE;
 
-		if(FAILED(PlayVisualRange(iconFrameNames[m_icon],NULL,iconFrameNames[m_icon])))
+		if(FAILED(PlayVisualRange(iconFrameNames[m_icon],nullptr,iconFrameNames[m_icon])))
 		{
-			PlayVisualRange(L"Normal",NULL,L"Normal");
+			PlayVisualRange(L"Normal",nullptr,L"Normal");
 		}
 
 		bHandled = TRUE;