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

1 files changed, 2 insertions, 2 deletions

diff --git a/Minecraft.World/LeapAtTargetGoal.cpp b/Minecraft.World/LeapAtTargetGoal.cpp
index 6aebc9a8..b559ef7d 100644
--- a/Minecraft.World/LeapAtTargetGoal.cpp
+++ b/Minecraft.World/LeapAtTargetGoal.cpp
@@ -15,7 +15,7 @@ LeapAtTargetGoal::LeapAtTargetGoal(Mob *mob, float yd)
 bool LeapAtTargetGoal::canUse()
 {
 	target = weak_ptr<LivingEntity>(mob->getTarget());
-	if (target.lock() == NULL) return false;
+	if (target.lock() == nullptr) return false;
 	double d = mob->distanceToSqr(target.lock());
 	if (d < 2 * 2 || d > 4 * 4) return false;
 	if (!mob->onGround) return false;
@@ -25,7 +25,7 @@ bool LeapAtTargetGoal::canUse()
 
 bool LeapAtTargetGoal::canContinueToUse()
 {
-	return target.lock() != NULL && !mob->onGround;
+	return target.lock() != nullptr && !mob->onGround;
 }
 
 void LeapAtTargetGoal::start()