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.World/FlippedIcon.cpp

@@ -41,7 +41,7 @@ float FlippedIcon::getU1(bool adjust/*=false*/) const
 float FlippedIcon::getU(double offset, bool adjust/*=false*/) const
 {
 	float diff = getU1(adjust) - getU0(adjust);
-	return getU0(adjust) + (diff * ((float) offset / SharedConstants::WORLD_RESOLUTION));
+	return getU0(adjust) + (diff * (static_cast<float>(offset) / SharedConstants::WORLD_RESOLUTION));
 }
 
 float FlippedIcon::getV0(bool adjust/*=false*/) const
@@ -59,7 +59,7 @@ float FlippedIcon::getV1(bool adjust/*=false*/) const
 float FlippedIcon::getV(double offset, bool adjust/*=false*/) const
 {
 	float diff = getV1(adjust) - getV0(adjust);
-	return getV0(adjust) + (diff * ((float) offset / SharedConstants::WORLD_RESOLUTION));
+	return getV0(adjust) + (diff * (static_cast<float>(offset) / SharedConstants::WORLD_RESOLUTION));
 }
 
 wstring FlippedIcon::getName() const