Fix Character vs Sensor interaction

* Fixed Character::SetShape failing to switch when standing inside a sensor
* Fixed Character::PostSimulation finding a sensor as ground collision

Fixes #1498

Docs/ReleaseNotes.md

@@ -38,6 +38,7 @@ For breaking API changes see [this document](https://github.com/jrouwe/JoltPhysi
 * VehicleConstraint would override `Body::SetAllowSleeping` every frame, making it impossible for client code to configure a vehicle that cannot go to sleep.
 * Fixed `CharacterVirtual::Contact::mIsSensorB` not being persisted in SaveState.
 * Fixed `CharacterVirtual::Contact::mHadContact` not being true for collisions with sensors. They will still be marked as mWasDiscarded to prevent any further interaction.
+* Fixed Character::SetShape failing to switch when standing inside a sensor / Character::PostSimulation finding a sensor as ground collision.
 * Fixed numerical inaccuracy in penetration depth calculation when `CollideShapeSettings::mMaxSeparationDistance` was set to a really high value (e.g. 1000).
 * Bugfix in `Semaphore::Acquire` for non-windows platform. The count was updated before waiting, meaning that the counter would become -(number of waiting threads) and the semaphore would not wake up until at least the same amount of releases was done. In practice this meant that the main thread had to do the last (number of threads) jobs, slowing down the simulation a bit.
 * An empty `MutableCompoundShape` now returns the same local bounding box as `EmptyShape` (a point at (0, 0, 0)). This prevents floating point overflow exceptions.

Jolt/Physics/Character/Character.cpp

@@ -75,8 +75,18 @@ void Character::CheckCollision(RMat44Arg inCenterOfMassTransform, Vec3Arg inMove
 	// Create query object layer filter
 	DefaultObjectLayerFilter object_layer_filter = mSystem->GetDefaultLayerFilter(mLayer);
 
-	// Ignore my own body
-	IgnoreSingleBodyFilter body_filter(mBodyID);
+	// Ignore sensors and my own body
+	class CharacterBodyFilter : public IgnoreSingleBodyFilter
+	{
+	public:
+		using			IgnoreSingleBodyFilter::IgnoreSingleBodyFilter;
+
+		virtual bool	ShouldCollideLocked(const Body &inBody) const override
+		{
+			return !inBody.IsSensor();
+		}
+	};
+	CharacterBodyFilter body_filter(mBodyID);
 
 	// Settings for collide shape
 	CollideShapeSettings settings;