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/NetherPortalParticle.cpp

@@ -33,14 +33,14 @@ NetherPortalParticle::NetherPortalParticle(Level *level, double x, double y, dou
 	gCol = (g/255.0f)*br;
 	bCol = (b/255.0f)*br;
 
-    lifetime = (int) (Math::random()*10) + 40;
+    lifetime = static_cast<int>(Math::random() * 10) + 40;
     noPhysics = true;
-    setMiscTex((int)(Math::random()*8));
+    setMiscTex(static_cast<int>(Math::random() * 8));
 }
 
 void NetherPortalParticle::render(Tesselator *t, float a, float xa, float ya, float za, float xa2, float za2)
 {
-    float s = (age + a) / (float) lifetime;
+    float s = (age + a) / static_cast<float>(lifetime);
     s = 1-s;
     s = s*s;
     s = 1-s;
@@ -53,13 +53,13 @@ int NetherPortalParticle::getLightColor(float a)
 {
     int br = Particle::getLightColor(a);
 
-    float pos = age/(float)lifetime;
+    float pos = age/static_cast<float>(lifetime);
     pos = pos*pos;
     pos = pos*pos;
         
     int br1 = (br) & 0xff;
     int br2 = (br >> 16) & 0xff;
-    br2 += (int) (pos * 15 * 16);
+    br2 += static_cast<int>(pos * 15 * 16);
     if (br2 > 15 * 16) br2 = 15 * 16;
     return br1 | br2 << 16;
 }
@@ -67,7 +67,7 @@ int NetherPortalParticle::getLightColor(float a)
 float NetherPortalParticle::getBrightness(float a)
 {
     float br = Particle::getBrightness(a);
-    float pos = age/(float)lifetime;
+    float pos = age/static_cast<float>(lifetime);
     pos = pos*pos;
     pos = pos*pos;
     return br*(1-pos)+pos;
@@ -79,7 +79,7 @@ void NetherPortalParticle::tick()
     yo = y;
     zo = z;
         
-    float pos = age/(float)lifetime;
+    float pos = age/static_cast<float>(lifetime);
     float a = pos;
     pos = -pos+pos*pos*2;
 //        pos = pos*pos;