X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=chapters%2F04.rst;h=62d471b0aac7388740768d33e97b0d5daea0329a;hb=c2ead72558bf28859c401039c4273d7d31aff05a;hp=8c6a7eda2b2e748d7e0a4b780cab072cbafd5a13;hpb=9e9feffd79cc1c4aa9c387afe98e16c7fbfae78d;p=ibg.git

diff --git a/chapters/04.rst b/chapters/04.rst
index 8c6a7ed..62d471b 100644
--- a/chapters/04.rst
+++ b/chapters/04.rst
@@ -86,6 +86,11 @@ room is an object, each item that the player sees and touches is an object;
 indeed the player herself is also an object (one that's automatically
 defined by the library).
 
+.. todo::
+
+  The set-off below needs to be tweaked or perhaps a custom lexer 
+  created to get italics in the right places.
+
 The general model of an **object** definition looks like this::
 
         Object      obj_id   "external_name"   parent_obj_id
@@ -284,45 +289,57 @@ This causes another change in the relationships.  The bird is now a child
 of the player (and *not* of the forest), and the player is both a parent
 (of the bird) and a child (of the forest).
 
-In this diagram, we show how the object relationships change during the
-course of the game.  The straight lines represent parent--child
-relationships, with the parent object at the top of the line, and the child
-object at the bottom.
+Here we show how the object relationships change during the course of the
+game.  The straight lines represent parent--child relationships, with the
+parent object at the top of the line, and the child object at the bottom.
+
+1. At the start of the game:
+
+   .. blockdiag:: /figures/heidiobj1.diag
+      :align: center
+      :scale: 80%
+
+2. The player types: ``GO EAST``
+
+   .. blockdiag:: /figures/heidiobj2.diag
+      :align: center
+      :scale: 80%
+
+3. The player types: ``TAKE THE BIRD``
+
+   .. blockdiag:: /figures/heidiobj3.diag
+      :align: center
+      :scale: 80%
+
+4. The player types: ``GO NORTHEAST``
 
-.. list-table::
-   :widths: 1 3 5
+   .. blockdiag:: /figures/heidiobj4.diag
+      :align: center
+      :scale: 80%
 
-   * - 1.
-     - At the start of the game:
-     - .. image:: /images/heidiobj1.*
+5. The player types: ``PUT BIRD IN NEST``
 
-   * - 2.
-     - The player types: ``GO EAST``
-     - .. image:: /images/heidiobj2.*
+   .. blockdiag:: /figures/heidiobj5.diag
+      :align: center
+      :scale: 80%
 
-   * - 3.
-     - The player types: ``TAKE THE BIRD``
-     - .. image:: /images/heidiobj3.*
+6. The player types: ``TAKE NEST``
 
-   * - 4.
-     - The player types: ``GO NORTHEAST``
-     - .. image:: /images/heidiobj4.*
+   .. blockdiag:: /figures/heidiobj6.diag
+      :align: center
+      :scale: 80%
 
-   * - 5.
-     - The player types: ``PUT BIRD IN NEST``
-     - .. image:: /images/heidiobj5.*
+7. The player types: ``UP``
 
-   * - 6.
-     - The player types: ``TAKE NEST``
-     - .. image:: /images/heidiobj6.*
+   .. blockdiag:: /figures/heidiobj7.diag
+      :align: center
+      :scale: 80%
 
-   * - 7.
-     - The player types: ``UP``
-     - .. image:: /images/heidiobj7.*
+8. The player types: ``PUT NEST ON BRANCH``
 
-   * - 8.
-     - The player types: ``PUT NEST ON BRANCH``
-     - .. image:: /images/heidiobj8.*
+   .. blockdiag:: /figures/heidiobj8.diag
+      :align: center
+      :scale: 80%
 
 In this short example, we've taken a lot of time and space to spell out
 exactly how the objects relationship patterns -- generally known as the