Fix default chain def (#878)

Fixes some sample crashes and should make using the new surface material easier. Fix body destruction handling of chain data.
erincatto · Jan 27, 2025 · 28adacf · 28adacf
1 parent 73324a7
commit 28adacf
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/src/body.c b/src/body.c
@@ -396,8 +396,7 @@ void b2DestroyBody( b2BodyId bodyId )
 	{
 		b2ChainShape* chain = b2ChainShapeArray_Get( &world->chainShapes, chainId );
 
-		b2Free( chain->shapeIndices, chain->count * sizeof( int ) );
-		chain->shapeIndices = NULL;
+		b2FreeChainData( chain );
 
 		// Return chain to free list.
 		b2FreeId( &world->chainIdPool, chainId );

diff --git a/src/types.c b/src/types.c
@@ -74,7 +74,13 @@ b2SurfaceMaterial b2DefaultSurfaceMaterial( void )
 
 b2ChainDef b2DefaultChainDef( void )
 {
+	static b2SurfaceMaterial defaultMaterial = {
+		.friction = 0.6f,
+	};
+
 	b2ChainDef def = { 0 };
+	def.materials = &defaultMaterial;
+	def.materialCount = 1;
 	def.filter = b2DefaultFilter();
 	def.internalValue = B2_SECRET_COOKIE;
 	return def;