Fix T75347: Update cloth brushes in versioning with a valid mass value

The file attached in the report has a cloth brush saved with a particle
mass of 0.0, which causes all sort of issues in the solver. I don't know
how that brush was created, but it does not seems to be possible to do
in the current version (reset values are correct, property limits are
correct and a default brush is created in versioning_defaults). This
resets all brushes with an invalid value to 1.0.

Reviewed By: jbakker

Maniphest Tasks: T75347

Differential Revision: https://developer.blender.org/D7698

1 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_280.c b/source/blender/blenloader/intern/versioning_280.c
index ff3909f5e1a..df6d1ee3c46 100644
--- a/source/blender/blenloader/intern/versioning_280.c
+++ b/source/blender/blenloader/intern/versioning_280.c
@@ -5071,5 +5071,14 @@ void blo_do_versions_280(FileData *fd, Library *UNUSED(lib), Main *bmain)
    */
   {
     /* Keep this block, even when empty. */
+
+    /* Reset the cloth mass to 1.0 in brushes with an invalid value. */
+    for (Brush *br = bmain->brushes.first; br; br = br->id.next) {
+      if (br->sculpt_tool == SCULPT_TOOL_CLOTH) {
+        if (br->cloth_mass == 0.0f) {
+          br->cloth_mass = 1.0f;
+        }
+      }
+    }
   }
 }