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
 
-ob1 = None
-try:
+def calculate_one():
+    ob1 = None
+    try:
         ob1 = obj.select_get()
-except:
+    except:
         # < 2.8
         ob1 = bpy.context.scene.objects.active
+    calculate_collisionbox(ob1)
 
 
 class MessageBox(bpy.types.Operator):
@@ -79,17 +81,19 @@ bpy.utils.register_class(MessageBox)
 
 msgSuffix = ""
 
-mesh = None
-if ob1 is not None:
+def calculate_collisionbox(ob1):
+    global msgSuffix
+    mesh = None
+    if ob1 is not None:
         mesh = ob1.data
 
-if ob1 is None:
+    if ob1 is None:
         msg = "Nothing is selected."
         bpy.ops.message.messagebox('INVOKE_DEFAULT', message = msg)
-elif (mesh is not None) and (not hasattr(mesh, 'vertices')):
+    elif (mesh is not None) and (not hasattr(mesh, 'vertices')):
         msg = "Collision box for armatures cannot be calculated."
         bpy.ops.message.messagebox('INVOKE_DEFAULT', message = msg)
-else:
+    else:
         # extents1 = ob1.dimensions.copy()
         obj1Loc = ob1.location
 
@@ -245,3 +249,5 @@ else:
 
 # Unregistering before user clicks the MessageBox will crash Blender!
 # bpy.utils.unregister_class(MessageBox)
+
+calculate_one()