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/PerlinNoise.cpp

@@ -64,7 +64,7 @@ double PerlinNoise::getValue(double x, double y, double z)
 
 doubleArray PerlinNoise::getRegion(doubleArray buffer, int x, int y, int z, int xSize, int ySize, int zSize, double xScale, double yScale, double zScale)
 {
-    if (buffer.data == NULL) buffer = doubleArray(xSize * ySize * zSize);
+    if (buffer.data == nullptr) buffer = doubleArray(xSize * ySize * zSize);
     else for (unsigned int i = 0; i < buffer.length; i++)
         buffer[i] = 0;