Merge ebc92a376a9627cfe49de51ea2d4e3b86c6e4bf7 into 2286bf332a6a66859fa1ab1a7063f5e3ecc912fc

.idea/workspace.xml

@@ -1,7 +1,9 @@
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@@ -11,82 +13,56 @@
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@@ -125,9 +101,9 @@
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         <option value="$PROJECT_DIR$/src/main/java/com/zipcodeconway/README.md" />
+        <option value="$PROJECT_DIR$/src/main/java/com/zipcodeconway/SimpleWindow.java" />
+        <option value="$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java" />
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@@ -139,10 +115,10 @@
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@@ -159,55 +135,57 @@
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@@ -287,9 +263,14 @@
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+          <option name="ENABLED" value="true" />
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@@ -315,7 +296,7 @@
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@@ -327,8 +308,8 @@
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@@ -340,7 +321,7 @@
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@@ -352,7 +333,7 @@
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@@ -473,19 +454,19 @@
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+      <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.32833788" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
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-      <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32561308" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32970026" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.3258427" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
+      <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.18876405" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32970026" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.13736655" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
+      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
-      <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
-      <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Theme Preview" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="true" content_ui="tabs" />
+      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
       <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
-      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
       <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
-      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
       <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
+      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
     </layout>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -584,30 +571,118 @@
     <watches-manager />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/pom.xml">
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="187">
-          <caret line="11" column="10" lean-forward="false" selection-start-line="11" selection-start-column="10" selection-end-line="11" selection-end-column="10" />
-          <folding />
+        <state relative-caret-position="1140">
+          <caret line="81" column="15" lean-forward="true" selection-start-line="81" selection-start-column="15" selection-end-line="81" selection-end-column="15" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/LifeStarts.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/SimpleWindow.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="272">
-          <caret line="16" column="5" lean-forward="false" selection-start-line="7" selection-start-column="0" selection-end-line="16" selection-end-column="5" />
-          <folding />
+        <state relative-caret-position="855">
+          <caret line="58" column="47" lean-forward="true" selection-start-line="54" selection-start-column="31" selection-end-line="58" selection-end-column="47" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/Life.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/ConwayGameOfLife.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="669">
-          <caret line="87" column="5" lean-forward="true" selection-start-line="47" selection-start-column="0" selection-end-line="87" selection-end-column="5" />
+        <state relative-caret-position="1305">
+          <caret line="98" column="85" lean-forward="true" selection-start-line="98" selection-start-column="85" selection-end-line="98" selection-end-column="85" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2757#2758#0" expanded="true" />
+            <element signature="e#2794#2795#0" expanded="true" />
+            <element signature="e#2839#2840#0" expanded="true" />
+            <element signature="e#2879#2880#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="360">
+          <caret line="26" column="0" lean-forward="false" selection-start-line="26" selection-start-column="0" selection-end-line="26" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/ConwayGameOfLife.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="360">
+          <caret line="28" column="53" lean-forward="true" selection-start-line="28" selection-start-column="53" selection-end-line="28" selection-end-column="53" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2757#2758#0" expanded="true" />
+            <element signature="e#2794#2795#0" expanded="true" />
+            <element signature="e#2839#2840#0" expanded="true" />
+            <element signature="e#2879#2880#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/SimpleWindow.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="795">
+          <caret line="54" column="8" lean-forward="false" selection-start-line="54" selection-start-column="8" selection-end-line="64" selection-end-column="49" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/SimpleWindow.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="240">
+          <caret line="17" column="42" lean-forward="false" selection-start-line="17" selection-start-column="42" selection-end-line="17" selection-end-column="42" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/ConwayGameOfLife.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="300">
+          <caret line="20" column="0" lean-forward="false" selection-start-line="20" selection-start-column="0" selection-end-line="20" selection-end-column="0" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#2757#2758#0" expanded="true" />
+            <element signature="e#2794#2795#0" expanded="true" />
+            <element signature="e#2839#2840#0" expanded="true" />
+            <element signature="e#2879#2880#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="450">
+          <caret line="32" column="32" lean-forward="false" selection-start-line="32" selection-start-column="32" selection-end-line="32" selection-end-column="32" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/pom.xml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="187">
+          <caret line="11" column="10" lean-forward="false" selection-start-line="11" selection-start-column="10" selection-end-line="11" selection-end-column="10" />
           <folding />
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/LifeStarts.java" />
+    <entry file="file://$PROJECT_DIR$/src/main/java/Life.java" />
     <entry file="uml://JAVA/com.zipcodeconway.ConwayGameOfLife">
       <provider selected="true" editor-type-id="UmlEditorProvider">
         <state>
@@ -629,39 +704,24 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/README.md">
-      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
-        <state split_layout="SPLIT">
-          <first_editor relative-caret-position="236">
-            <caret line="52" column="194" lean-forward="false" selection-start-line="52" selection-start-column="194" selection-end-line="52" selection-end-column="194" />
-            <folding />
-          </first_editor>
-          <second_editor />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$USER_HOME$/Downloads/ConwayLifeRandomat50.png">
-      <provider selected="true" editor-type-id="images">
-        <state />
-      </provider>
-    </entry>
-    <entry file="file://$USER_HOME$/Documents/gitea/gitea/custom/public/img/ConwayLifeUML.png">
-      <provider selected="true" editor-type-id="images">
-        <state />
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/GameofLife.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/README.md" />
+    <entry file="file://$USER_HOME$/Downloads/ConwayLifeRandomat50.png" />
+    <entry file="file://$USER_HOME$/Documents/gitea/gitea/custom/public/img/ConwayLifeUML.png" />
+    <entry file="file://$PROJECT_DIR$/src/main/java/GameofLife.java" />
+    <entry file="file://$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="334">
-          <caret line="83" column="17" lean-forward="false" selection-start-line="82" selection-start-column="30" selection-end-line="83" selection-end-column="17" />
-          <folding />
+        <state relative-caret-position="378">
+          <caret line="66" column="21" lean-forward="true" selection-start-line="66" selection-start-column="21" selection-end-line="66" selection-end-column="21" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/SimpleWindow.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="289">
-          <caret line="17" column="42" lean-forward="false" selection-start-line="17" selection-start-column="42" selection-end-line="17" selection-end-column="42" />
+        <state relative-caret-position="870">
+          <caret line="58" column="47" lean-forward="false" selection-start-line="54" selection-start-column="31" selection-end-line="58" selection-end-column="47" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
@@ -670,26 +730,18 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/com/zipcodeconway/ConwayGameOfLife.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="164">
-          <caret line="20" column="0" lean-forward="false" selection-start-line="20" selection-start-column="0" selection-end-line="20" selection-end-column="0" />
+        <state relative-caret-position="15">
+          <caret line="101" column="0" lean-forward="true" selection-start-line="101" selection-start-column="0" selection-end-line="101" selection-end-column="0" />
           <folding>
-            <element signature="e#585#586#0" expanded="true" />
-            <element signature="e#676#677#0" expanded="true" />
-            <element signature="e#712#713#0" expanded="true" />
-            <element signature="e#1429#1430#0" expanded="true" />
-            <element signature="e#1453#1454#0" expanded="true" />
+            <element signature="imports" expanded="true" />
+            <element signature="e#2757#2758#0" expanded="true" />
+            <element signature="e#2794#2795#0" expanded="true" />
+            <element signature="e#2839#2840#0" expanded="true" />
+            <element signature="e#2879#2880#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="510">
-          <caret line="32" column="32" lean-forward="false" selection-start-line="32" selection-start-column="32" selection-end-line="32" selection-end-column="32" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
   </component>
   <component name="masterDetails">
     <states>

src/main/java/com/zipcodeconway/ConwayGameOfLife.java

@@ -1,32 +1,88 @@
 package com.zipcodeconway;
 
+import java.util.Arrays;
+import java.util.Random;
+
 public class ConwayGameOfLife {
 
-    public ConwayGameOfLife(Integer dimension) {
-     }
+    private SimpleWindow simpleWindow;
 
-    public ConwayGameOfLife(Integer dimension, int[][] startmatrix) {
+    private Integer dimension;
+    private int[][] currentGeneration;
+    private int[][] nextGeneration;
+    private int[][] nextArrayAfter;
+    private int[][] currentArrayAfter;
+
+    public ConwayGameOfLife(Integer dimension) {
+        this.simpleWindow = new SimpleWindow(dimension);
+        this.currentGeneration = createRandomStart(dimension);
+        this.nextGeneration = new int[dimension][dimension];
     }
 
-    public static void main(String[] args) {
-        ConwayGameOfLife sim = new ConwayGameOfLife(50);
-        int[][] endingWorld = sim.simulate(50);
+    public ConwayGameOfLife(Integer dimension, int[][] startMatrix) {
+        this.dimension = dimension;
+        this.currentGeneration = startMatrix;
     }
 
     // Contains the logic for the starting scenario.
     // Which cells are alive or dead in generation 0.
     // allocates and returns the starting matrix of size 'dimension'
     private int[][] createRandomStart(Integer dimension) {
-        return new int[1][1];
+        int[][] randomArray = new int[dimension][dimension];
+
+        Random random = new Random();
+        for (int i = 0; i < randomArray.length; i++) {
+            for (int j = 0; j < randomArray[i].length; j++) {
+                int zeroOrOne = random.nextInt(2);
+                randomArray[i][j] = zeroOrOne;
+            }
+        }
+        return randomArray;
     }
 
     public int[][] simulate(Integer maxGenerations) {
-        return new int[1][1];
+        int generation = 0;
+        while (generation <= maxGenerations) {
+            this.simpleWindow.display(currentGeneration, generation);
+            for (int i = 0; i < currentGeneration.length; i++) {
+                for (int j = 0; j < currentGeneration.length; j++) {
+                    nextGeneration[i][j] = isAlive(i, j, currentGeneration);
+                }
+            }
+            copyAndZeroOut(nextGeneration, currentGeneration);
+            this.simpleWindow.sleep(125);
+            generation++;
+        }
+        return currentGeneration;
     }
 
     // copy the values of 'next' matrix to 'current' matrix,
     // and then zero out the contents of 'next' matrix
     public void copyAndZeroOut(int [][] next, int[][] current) {
+        this.nextArrayAfter = new int[next.length][next.length];
+        this.currentArrayAfter = new int[next.length][next.length];
+
+        for (int i = 0; i < current.length; i++) {
+            for (int j = 0; j < current[i].length; j++) {
+                current[i][j] = next[i][j];
+                currentArrayAfter[i][j] = next[i][j];
+            }
+        }
+
+        for (int i = 0; i < next.length; i++) {
+            for (int j = 0; j < next[i].length; j++) {
+                next[i][j] = 0;
+                nextArrayAfter[i][j] = 0;
+            }
+        }
+    }
+
+    public int[][] getNextArrayAfter() {
+        return nextArrayAfter;
+    }
+
+    public int[][] getCurrentArrayAfter() {
+        return currentArrayAfter;
     }
 
     // Calculate if an individual cell should be alive in the next generation.
@@ -38,6 +94,76 @@ public class ConwayGameOfLife {
 		Any dead cell with exactly three live neighbours cells will come to life.
 	*/
     private int isAlive(int row, int col, int[][] world) {
-        return 0;
+        int living = 0;
+
+        int west = row - 1;
+        int east = row + 1;
+        int north = col - 1;
+        int south = col + 1;
+
+        if(west == -1) {
+            west = world.length - 1;
+        }
+        if(east == world.length){
+            east = 0;
+        }
+        if(north == -1) {
+            north = world[row].length - 1;
+        }
+        if(south == world[row].length) {
+            south = 0;
+        }
+
+        if(world[west][north] == 1) {
+            living++;
+        }
+        if(world[west][col] == 1) {
+            living++;
+        }
+        if(world[west][south] == 1) {
+            living++;
+        }
+        if(world[row][north] == 1) {
+            living++;
+        }
+        if(world[row][south] == 1) {
+            living++;
+        }
+        if(world[east][north] == 1) {
+            living++;
+        }
+        if(world[east][col] == 1) {
+            living++;
+        }
+        if(world[east][south] == 1) {
+            living++;
+        }
+
+        if(living < 2) {
+            return 0;
+        } else if (living > 3) {
+            return 0;
+        } else if (living == 3) {
+            return 1;
+        } else {
+            return world[row][col];
+        }
+    }
+
+
+    public String rowsToString(int[][] arrayToPrint) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < arrayToPrint.length; i++) {
+            sb.append(Arrays.toString(arrayToPrint[i]) + "\n");
+        }
+        sb.deleteCharAt(sb.length() - 1);
+        return sb.toString();
     }
+
+    public static void main(String[] args) {
+        ConwayGameOfLife sim = new ConwayGameOfLife(50);
+        int[][] endingWorld = sim.simulate(500);
+
+    }
+
 }

src/main/java/com/zipcodeconway/SimpleWindow.java

@@ -48,6 +48,25 @@ public class SimpleWindow {
                 }
             }
         }
+    }
+
+    public static void main(String[] args) {
+        SimpleWindow sw = new SimpleWindow(40);
+        int[][] testArray1 = { {0, 0, 0, 0, 0},
+                               {0, 0, 1, 0, 0},
+                               {0, 0, 1, 0, 0},
+                               {0, 0, 1, 0, 0},
+                               {0, 0, 0, 0, 0} };
+
+        int[][] testArray2 = { {0, 0, 0, 0, 0},
+                               {0, 0, 1, 0, 0},
+                               {0, 1, 1, 1, 0},
+                               {0, 0, 1, 0, 0},
+                               {0, 0, 0, 0, 0} };
+
+        sw.display(testArray1, 125);
+        sw.display(testArray2, 125);
+
 
     }
 }

src/test/java/com/zipcodeconway/ConwayGameOfLifeTest.java

@@ -1,11 +1,16 @@
 package com.zipcodeconway;
 
+import org.junit.Assert;
 import org.junit.Test;
 
 import static org.junit.Assert.*;
 
+import com.zipcodeconway.ConwayGameOfLife;
+
 public class ConwayGameOfLifeTest {
 
+    private ConwayGameOfLife sim;
+
     @Test
     public void runTest1() {
         int[][] start = {
@@ -43,4 +48,45 @@ public class ConwayGameOfLifeTest {
         int[][] results = sim.simulate(10);
         assertTrue(java.util.Arrays.deepEquals(results, expected));
     }
+
+    @Test
+    public void copyAndZeroOutTest() {
+        // Given
+        int[][] expectedNextArrayBefore = {
+                {0, 0, 0, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 0, 0, 0} };
+        int[][] expectedNextArrayAfter = {
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0} };
+        int[][] expectedCurrentArrayBefore = {
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0},
+                {0, 1, 1, 1, 0},
+                {0, 0, 0, 0, 0},
+                {0, 0, 0, 0, 0} };
+        int[][] expectedCurrentArrayAfter = {
+                {0, 0, 0, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 1, 0, 0},
+                {0, 0, 0, 0, 0} };
+        sim = new ConwayGameOfLife(5, expectedCurrentArrayBefore);
+        String expectedNextArray = sim.rowsToString(expectedNextArrayAfter);
+        String expectedCurrentArray = sim.rowsToString(expectedCurrentArrayAfter);
+        // When
+        sim.copyAndZeroOut(expectedNextArrayBefore, expectedCurrentArrayBefore);
+        String actualNextArray = sim.rowsToString(sim.getNextArrayAfter());
+        String actualCurrentArray = sim.rowsToString(sim.getCurrentArrayAfter());
+        // Then
+        Assert.assertEquals(expectedNextArray, actualNextArray);
+        Assert.assertEquals(expectedCurrentArray, actualCurrentArray);
+
+    }
+
 }