bullet: Sync with current upstream master branch

This updates our local copy to commit 5ec8339b6fc491e3f09a34a4516e82787f053fcc.
We need a recent master commit for some new features that we use in Godot
(see #25543 and #28909).

To avoid warnings generated by Bullet headers included in our own module,
we include those headers with -isystem on GCC and Clang.

Fixes #29503.

1 files changed, 33 insertions, 12 deletions

diff --git a/thirdparty/bullet/BulletDynamics/Featherstone/btMultiBody.h b/thirdparty/bullet/BulletDynamics/Featherstone/btMultiBody.h
index e5c0f1806b..c0b0d003be 100644
--- a/thirdparty/bullet/BulletDynamics/Featherstone/btMultiBody.h
+++ b/thirdparty/bullet/BulletDynamics/Featherstone/btMultiBody.h
@@ -65,7 +65,7 @@ public:
 	virtual ~btMultiBody();
 
 	//note: fixed link collision with parent is always disabled
-	void setupFixed(int linkIndex,
+	void setupFixed(int i, //linkIndex
 					btScalar mass,
 					const btVector3 &inertia,
 					int parent,
@@ -83,7 +83,7 @@ public:
 						const btVector3 &thisPivotToThisComOffset,
 						bool disableParentCollision);
 
-	void setupRevolute(int linkIndex,  // 0 to num_links-1
+	void setupRevolute(int i,  // 0 to num_links-1
 					   btScalar mass,
 					   const btVector3 &inertia,
 					   int parentIndex,
@@ -93,7 +93,7 @@ public:
 					   const btVector3 &thisPivotToThisComOffset,    // vector from joint axis to my COM, in MY frame
 					   bool disableParentCollision = false);
 
-	void setupSpherical(int linkIndex,  // 0 to num_links-1
+	void setupSpherical(int i,  // linkIndex, 0 to num_links-1
 						btScalar mass,
 						const btVector3 &inertia,
 						int parent,
@@ -182,7 +182,10 @@ public:
 	// get/set pos/vel/rot/omega for the base link
 	//
 
-	const btVector3 &getBasePos() const { return m_basePos; }  // in world frame
+	const btVector3 &getBasePos() const 
+	{ 
+		return m_basePos; 
+	}  // in world frame
 	const btVector3 getBaseVel() const
 	{
 		return btVector3(m_realBuf[3], m_realBuf[4], m_realBuf[5]);
@@ -274,15 +277,15 @@ public:
 	//
 	// transform vectors in local frame of link i to world frame (or vice versa)
 	//
-	btVector3 localPosToWorld(int i, const btVector3 &vec) const;
-	btVector3 localDirToWorld(int i, const btVector3 &vec) const;
-	btVector3 worldPosToLocal(int i, const btVector3 &vec) const;
-	btVector3 worldDirToLocal(int i, const btVector3 &vec) const;
+	btVector3 localPosToWorld(int i, const btVector3 &local_pos) const;
+	btVector3 localDirToWorld(int i, const btVector3 &local_dir) const;
+	btVector3 worldPosToLocal(int i, const btVector3 &world_pos) const;
+	btVector3 worldDirToLocal(int i, const btVector3 &world_dir) const;
 
 	//
 	// transform a frame in local coordinate to a frame in world coordinate
 	//
-	btMatrix3x3 localFrameToWorld(int i, const btMatrix3x3 &mat) const;
+	btMatrix3x3 localFrameToWorld(int i, const btMatrix3x3 &local_frame) const;
 
 	//
 	// calculate kinetic energy and angular momentum
@@ -451,7 +454,10 @@ public:
 	//
 	void setCanSleep(bool canSleep)
 	{
-		m_canSleep = canSleep;
+		if (m_canWakeup)
+		{
+			m_canSleep = canSleep;
+		}
 	}
 
 	bool getCanSleep() const
@@ -459,6 +465,15 @@ public:
 		return m_canSleep;
 	}
 
+	bool getCanWakeup() const
+	{
+		return m_canWakeup;
+	}
+	
+	void setCanWakeup(bool canWakeup) 
+	{
+		m_canWakeup = canWakeup;
+	}
 	bool isAwake() const { return m_awake; }
 	void wakeUp();
 	void goToSleep();
@@ -469,6 +484,11 @@ public:
 		return m_fixedBase;
 	}
 
+	void setFixedBase(bool fixedBase)
+	{
+		m_fixedBase = fixedBase;
+	}
+
 	int getCompanionId() const
 	{
 		return m_companionId;
@@ -556,11 +576,11 @@ public:
 	{
 		return m_internalNeedsJointFeedback;
 	}
-	void forwardKinematics(btAlignedObjectArray<btQuaternion> & scratch_q, btAlignedObjectArray<btVector3> & scratch_m);
+	void forwardKinematics(btAlignedObjectArray<btQuaternion>& world_to_local, btAlignedObjectArray<btVector3> & local_origin);
 
 	void compTreeLinkVelocities(btVector3 * omega, btVector3 * vel) const;
 
-	void updateCollisionObjectWorldTransforms(btAlignedObjectArray<btQuaternion> & scratch_q, btAlignedObjectArray<btVector3> & scratch_m);
+	void updateCollisionObjectWorldTransforms(btAlignedObjectArray<btQuaternion> & world_to_local, btAlignedObjectArray<btVector3> & local_origin);
 
 	virtual int calculateSerializeBufferSize() const;
 
@@ -688,6 +708,7 @@ private:
 	// Sleep parameters.
 	bool m_awake;
 	bool m_canSleep;
+	bool m_canWakeup;
 	btScalar m_sleepTimer;
 
 	void *m_userObjectPointer;