move blender script code into functions

utilities/blender/generate_lua_collisionbox.py

@@ -42,12 +42,14 @@ import bpy
 from mathutils import Vector
 # from mathutils import Euler
 
+def calculate_one():
     ob1 = None
     try:
         ob1 = obj.select_get()
     except:
         # < 2.8
         ob1 = bpy.context.scene.objects.active
+    calculate_collisionbox(ob1)
 
 
 class MessageBox(bpy.types.Operator):
@@ -79,6 +81,8 @@ bpy.utils.register_class(MessageBox)
 
 msgSuffix = ""
 
+def calculate_collisionbox(ob1):
+    global msgSuffix
     mesh = None
     if ob1 is not None:
         mesh = ob1.data
@@ -245,3 +249,5 @@ else:
 
 # Unregistering before user clicks the MessageBox will crash Blender!
 # bpy.utils.unregister_class(MessageBox)
+
+calculate_one()