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.Client/Common/UI/UIScene_EULA.cpp

@@ -48,8 +48,8 @@ UIScene_EULA::UIScene_EULA(int iPad, void *initData, UILayer *parentLayer) : UIS
 #endif
 
 	vector<wstring> paragraphs;
-	int lastIndex = 0;
-	for (	int index = EULA.find(L"\r\n", lastIndex, 2);
+	size_t lastIndex = 0;
+	for (	size_t index = EULA.find(L"\r\n", lastIndex, 2);
 			index != wstring::npos; 
 			index = EULA.find(L"\r\n", lastIndex, 2)
 		)
@@ -132,7 +132,7 @@ void UIScene_EULA::handleInput(int iPad, int key, bool repeat, bool pressed, boo
 
 void UIScene_EULA::handlePress(F64 controlId, F64 childId)
 {
-	switch((int)controlId)
+	switch(static_cast<int>(controlId))
 	{
 	case eControl_Confirm:
 		//CD - Added for audio