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/HugeExplosionParticle.cpp

@@ -25,12 +25,12 @@ HugeExplosionParticle::HugeExplosionParticle(Textures *textures, Level *level, d
 	gCol = g * br;
 	bCol = b * br;
 	
-	size = 1 - (float) xa * 0.5f;
+	size = 1 - static_cast<float>(xa) * 0.5f;
 }
 
 void HugeExplosionParticle::render(Tesselator *t, float a, float xa, float ya, float za, float xa2, float za2)
 {
-	int tex = (int) ((life + a) * 15 / lifeTime);
+	int tex = static_cast<int>((life + a) * 15 / lifeTime);
 	if (tex > 15) return;
 	textures->bindTexture(&EXPLOSION_LOCATION);
 
@@ -41,9 +41,9 @@ void HugeExplosionParticle::render(Tesselator *t, float a, float xa, float ya, f
 
 	float r = 2.0f * size;
 
-	float x = (float) (xo + (this->x - xo) * a - xOff);
-	float y = (float) (yo + (this->y - yo) * a - yOff);
-	float z = (float) (zo + (this->z - zo) * a - zOff);
+	float x = static_cast<float>(xo + (this->x - xo) * a - xOff);
+	float y = static_cast<float>(yo + (this->y - yo) * a - yOff);
+	float z = static_cast<float>(zo + (this->z - zo) * a - zOff);
 
 	// 4J - don't render explosion particles that are less than 3 metres away, to try and avoid large particles that are causing us problems with photosensitivity testing
 	float distSq = (x*x + y*y + z*z);