Remove unused Bullet module and thirdparty code

It has been disabled in `master` since one year (#45852) and our plan
is for Bullet, and possibly other thirdparty physics engines, to be
implemented via GDExtension so that they can be selected by the users
who need them.

1 files changed, 0 insertions, 89 deletions

diff --git a/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3ReduceContacts.h b/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3ReduceContacts.h
deleted file mode 100644
index c108255b9f..0000000000
--- a/thirdparty/bullet/Bullet3Collision/NarrowPhaseCollision/shared/b3ReduceContacts.h
+++ /dev/null
@@ -1,89 +0,0 @@
-#ifndef B3_REDUCE_CONTACTS_H
-#define B3_REDUCE_CONTACTS_H
-
-inline int b3ReduceContacts(const b3Float4* p, int nPoints, const b3Float4& nearNormal, b3Int4* contactIdx)
-{
-	if (nPoints == 0)
-		return 0;
-
-	if (nPoints <= 4)
-		return nPoints;
-
-	if (nPoints > 64)
-		nPoints = 64;
-
-	b3Float4 center = b3MakeFloat4(0, 0, 0, 0);
-	{
-		for (int i = 0; i < nPoints; i++)
-			center += p[i];
-		center /= (float)nPoints;
-	}
-
-	//	sample 4 directions
-
-	b3Float4 aVector = p[0] - center;
-	b3Float4 u = b3Cross3(nearNormal, aVector);
-	b3Float4 v = b3Cross3(nearNormal, u);
-	u = b3FastNormalized3(u);
-	v = b3FastNormalized3(v);
-
-	//keep point with deepest penetration
-	float minW = FLT_MAX;
-
-	int minIndex = -1;
-
-	b3Float4 maxDots;
-	maxDots.x = FLT_MIN;
-	maxDots.y = FLT_MIN;
-	maxDots.z = FLT_MIN;
-	maxDots.w = FLT_MIN;
-
-	//	idx, distance
-	for (int ie = 0; ie < nPoints; ie++)
-	{
-		if (p[ie].w < minW)
-		{
-			minW = p[ie].w;
-			minIndex = ie;
-		}
-		float f;
-		b3Float4 r = p[ie] - center;
-		f = b3Dot3F4(u, r);
-		if (f < maxDots.x)
-		{
-			maxDots.x = f;
-			contactIdx[0].x = ie;
-		}
-
-		f = b3Dot3F4(-u, r);
-		if (f < maxDots.y)
-		{
-			maxDots.y = f;
-			contactIdx[0].y = ie;
-		}
-
-		f = b3Dot3F4(v, r);
-		if (f < maxDots.z)
-		{
-			maxDots.z = f;
-			contactIdx[0].z = ie;
-		}
-
-		f = b3Dot3F4(-v, r);
-		if (f < maxDots.w)
-		{
-			maxDots.w = f;
-			contactIdx[0].w = ie;
-		}
-	}
-
-	if (contactIdx[0].x != minIndex && contactIdx[0].y != minIndex && contactIdx[0].z != minIndex && contactIdx[0].w != minIndex)
-	{
-		//replace the first contact with minimum (todo: replace contact with least penetration)
-		contactIdx[0].x = minIndex;
-	}
-
-	return 4;
-}
-
-#endif  //B3_REDUCE_CONTACTS_H