Fix SoftDynamicBody3D crash when setting disable mode

Proper logic for changing physics state when disabled and disabled mode
is changed (it was unnecessarily making calls to re-initialize physics).

Extra error handling in soft body implementations to avoid crashes with
invalid mesh.

1 files changed, 1 insertions, 7 deletions

diff --git a/scene/3d/soft_dynamic_body_3d.cpp b/scene/3d/soft_dynamic_body_3d.cpp
index 43292d42f1..903eedb58b 100644
--- a/scene/3d/soft_dynamic_body_3d.cpp
+++ b/scene/3d/soft_dynamic_body_3d.cpp
@@ -552,15 +552,9 @@ void SoftDynamicBody3D::set_disable_mode(DisableMode p_mode) {
 		return;
 	}
 
-	bool inside_tree = is_inside_tree();
-
-	if (inside_tree && (disable_mode == DISABLE_MODE_REMOVE)) {
-		_prepare_physics_server();
-	}
-
 	disable_mode = p_mode;
 
-	if (inside_tree && (disable_mode == DISABLE_MODE_REMOVE)) {
+	if (mesh.is_valid() && is_inside_tree() && !is_enabled()) {
 		_prepare_physics_server();
 	}
 }