1 files changed, 139 insertions, 0 deletions
diff --git a/src/Update/Story.elm b/src/Update/Story.elm
new file mode 100644
index 0000000..bee5cc8
--- /dev/null
+++ b/src/Update/Story.elm
@@ -0,0 +1,139 @@
+module Update.Story exposing
+   (
+      new,
+      select_choice,
+      input_string,
+      input_integer,
+      input_command
+   )
+
+-- Elm -------------------------------------------------------------------------
+import Html
+
+-- Local Module ----------------------------------------------------------------
+import Struct.Event
+import Struct.Model
+
+import Util.TonkadurToHtml
+
+import Tonkadur.Execute
+
+--------------------------------------------------------------------------------
+-- TYPES -----------------------------------------------------------------------
+--------------------------------------------------------------------------------
+
+--------------------------------------------------------------------------------
+-- LOCAL -----------------------------------------------------------------------
+--------------------------------------------------------------------------------
+step : Struct.Model.Type -> Struct.Model.Type
+step model =
+   case model.tonkadur.last_instruction_effect of
+      MustContinue ->
+         (step
+            {model |
+               tonkadur =
+                  (Tonkadur.Execute.execute
+                     model.tonkadur.code[model.tonkadur.program_counter]
+                     model.tonkadur
+                  )
+            }
+         )
+
+      MustEnd -> model -- TODO
+
+      (MustPromptCommand min max label) ->
+         {model |
+            tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+            ui =
+               (Struct.UI.prompt_command
+                  (Tonkadur.Types.value_to_int min)
+                  (Tonkadur.Types.value_to_int max)
+                  model.ui
+               )
+         }
+
+      (MustPromptInteger min max label) ->
+         {model |
+            tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+            ui =
+               (Struct.UI.prompt_integer
+                  (Tonkadur.Types.value_to_int min)
+                  (Tonkadur.Types.value_to_int max)
+                  model.ui
+               )
+         }
+
+      (MustPromptString min max label) ->
+         {model |
+            tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+            ui =
+               (Struct.UI.prompt_string
+                  (Tonkadur.Types.value_to_int min)
+                  (Tonkadur.Types.value_to_int max)
+                  model.ui
+               )
+         }
+
+      MustPromptChoice ->
+         {model |
+            tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+            ui =
+               (List.foldl
+                  (\option (ix, ui) ->
+                     case option of
+                        (Choice rich_text) ->
+                           (
+                              (ix + 1),
+                              (Struct.UI.display_choice
+                                 ix
+                                 (Util.TonkadurToHtml.convert
+                                    (TextValue rich_text)
+                                 )
+                              )
+                           )
+
+                        _ -> ((ix + 1), ui)
+                  )
+                  (0, model.ui)
+                  model.tonkadur.available_options
+               )
+         }
+
+      (MustDisplay text) ->
+         (step
+            {model |
+               tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+               ui =
+                  (Struct.UI.display_text
+                     (Util.TonkadurToHtml.convert text)
+                     model.ui
+                  )
+            }
+         )
+
+      (MustDisplayError text) ->
+         (step
+            {model |
+               tonkadur = (Tonkadur.Types.allow_continuing model.tonkadur),
+               ui =
+                  (Struct.UI.display_error
+                     (Util.TonkadurToHtml.convert text)
+                     model.ui
+                  )
+            }
+         )
+
+      _ -> model
+
+--------------------------------------------------------------------------------
+-- EXPORTED --------------------------------------------------------------------
+--------------------------------------------------------------------------------
+
+new : Type
+new =
+   {
+      displayed_text = [],
+      displayed_options = []
+   }
+
+