Merge node: add update routine

blender/arm/logicnode/logic/LN_merge.py

@@ -24,7 +24,7 @@ class MergeNode(ArmLogicTreeNode):
     bl_idname = 'LNMergeNode'
     bl_label = 'Merge'
     arm_section = 'flow'
-    arm_version = 1
+    arm_version = 2
 
     def update_exec_mode(self, context):
         self.outputs['Active Input Index'].hide = self.property0 == 'once_per_frame'
@@ -65,3 +65,24 @@ class MergeNode(ArmLogicTreeNode):
             return self.bl_label
 
         return f'{self.bl_label}: [{len(self.inputs)}]'
+
+    def get_replacement_node(self, node_tree: bpy.types.NodeTree):
+        if self.arm_version not in (0, 1):
+            raise LookupError()
+
+        newnode = node_tree.nodes.new('LNMergeNode')
+        newnode.property0 = self.property0
+
+        # Recreate all original inputs
+        array_nodes[str(id(newnode))] = newnode
+        for idx, input in enumerate(self.inputs):
+            bpy.ops.arm.node_add_input('EXEC_DEFAULT', node_index=str(id(newnode)), socket_type='ArmNodeSocketAction')
+
+            for link in input.links:
+                node_tree.links.new(link.from_socket, newnode.inputs[idx])
+
+        # Recreate outputs
+        for link in self.outputs[0].links:
+            node_tree.links.new(newnode.outputs[0], link.to_socket)
+
+        return newnode