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/Durango/Leaderboards/GameProgress.cpp

@@ -10,11 +10,11 @@ namespace WFC = Windows::Foundation::Collections;
 namespace MXSA = Microsoft::Xbox::Services::Achievements;
 namespace CC = concurrency;
 
-GameProgress *GameProgress::instance = NULL;
+GameProgress *GameProgress::instance = nullptr;
 
 void GameProgress::Flush(int iPad)
 {
-	if (instance == NULL) 
+	if (instance == nullptr) 
 		instance = new GameProgress();
 
 	instance->updatePlayer(iPad);
@@ -22,7 +22,7 @@ void GameProgress::Flush(int iPad)
 
 void GameProgress::Tick()
 {
-	if (instance == NULL)
+	if (instance == nullptr)
 		instance = new GameProgress();
 
 	long long currentTime = System::currentTimeMillis();
@@ -103,5 +103,5 @@ void GameProgress::updatePlayer(int iPad)
 
 float GameProgress::calcGameProgress(int achievementsUnlocked)
 {
-	return (float) achievementsUnlocked / 0.60f;
+	return static_cast<float>(achievementsUnlocked) / 0.60f;
 }