Create an undo/redo action when pinning a SoftBody3D point in the editor

Previously, if you pinned a point by clicking on one of the soft body
vertex handles, the scene was not marked as modified, and the action
could not be undone by hitting Ctrl + Z.

Co-authored-by: Tomasz Chabora <[email protected]>

editor/scene/3d/gizmos/physics/soft_body_3d_gizmo_plugin.cpp

@@ -30,6 +30,7 @@
 
 #include "soft_body_3d_gizmo_plugin.h"
 
+#include "editor/editor_undo_redo_manager.h"
 #include "scene/3d/physics/soft_body_3d.h"
 
 SoftBody3DGizmoPlugin::SoftBody3DGizmoPlugin() {
@@ -106,7 +107,15 @@ Variant SoftBody3DGizmoPlugin::get_handle_value(const EditorNode3DGizmo *p_gizmo
 
 void SoftBody3DGizmoPlugin::commit_handle(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary, const Variant &p_restore, bool p_cancel) {
 	SoftBody3D *soft_body = Object::cast_to<SoftBody3D>(p_gizmo->get_node_3d());
-	soft_body->pin_point_toggle(p_id);
+	const bool is_pinned = soft_body->is_point_pinned(p_id);
+
+	EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
+	undo_redo->create_action(vformat(is_pinned ? TTR("Remove SoftBody3D pinned point %d") : TTR("Add SoftBody3D pinned point %d"), p_id));
+	undo_redo->add_do_method(soft_body, "set_point_pinned", p_id, !is_pinned);
+	undo_redo->add_do_method(soft_body, "update_gizmos");
+	undo_redo->add_undo_method(soft_body, "set_point_pinned", p_id, is_pinned);
+	undo_redo->add_undo_method(soft_body, "update_gizmos");
+	undo_redo->commit_action();
 }
 
 bool SoftBody3DGizmoPlugin::is_handle_highlighted(const EditorNode3DGizmo *p_gizmo, int p_id, bool p_secondary) const {

scene/3d/physics/soft_body_3d.cpp

@@ -704,10 +704,6 @@ void SoftBody3D::apply_central_force(const Vector3 &p_force) {
 	PhysicsServer3D::get_singleton()->soft_body_apply_central_force(physics_rid, p_force);
 }
 
-void SoftBody3D::pin_point_toggle(int p_point_index) {
-	pin_point(p_point_index, !(-1 != _has_pinned_point(p_point_index)));
-}
-
 void SoftBody3D::pin_point(int p_point_index, bool pin, const NodePath &p_spatial_attachment_path, int p_insert_at) {
 	ERR_FAIL_COND_MSG(p_insert_at < -1 || p_insert_at >= pinned_points.size(), "Invalid index for pin point insertion position.");
 	_pin_point_on_physics_server(p_point_index, pin);

scene/3d/physics/soft_body_3d.h

@@ -182,7 +182,6 @@ public:
 
 	Vector3 get_point_transform(int p_point_index);
 
-	void pin_point_toggle(int p_point_index);
 	void pin_point(int p_point_index, bool pin, const NodePath &p_spatial_attachment_path = NodePath(), int p_insert_at = -1);
 	bool is_point_pinned(int p_point_index) const;