Added Brian's Brain implementation, and run it in Goldfish

src/Goldfish.java

@@ -15,29 +15,19 @@ public class Goldfish {
 
     public void run () {
         //TODO: make it run.
-        _grid.getPatch(1,0).setState(1);
-        _grid.getPatch(2,1).setState(1);
-        _grid.getPatch(2,2).setState(1);
-        _grid.getPatch(1,2).setState(1);
-        _grid.getPatch(0,2).setState(1);
+        _grid.getPatch(1,0).setState(2);
+        _grid.getPatch(2,1).setState(2);
+        _grid.getPatch(2,2).setState(2);
+        _grid.getPatch(1,2).setState(2);
+        _grid.getPatch(0,2).setState(2);
         System.out.println(_grid);
 
-        _grid = Conway.run(_grid);
-        System.out.println("------------");
-        System.out.println(_grid);
-
-        _grid = Conway.run(_grid);
-        System.out.println("------------");
-        System.out.println(_grid);
-        
-        _grid = Conway.run(_grid);
-        System.out.println("------------");
-        System.out.println(_grid);
-
-        _grid = Conway.run(_grid);
-        System.out.println("------------");
-        System.out.println(_grid);
-    }
+        for (int i = 0; i < 6; i++) {
+            _grid = BriansBrain.run(_grid);
+            System.out.println("------------");
+            System.out.println(_grid);
+        }
+   }
 
     public static void main (String[] args) {
         Goldfish g = new Goldfish();

src/rules/BriansBrain.java

@@ -0,0 +1,27 @@
+package edu.stuy.goldfish.rules;
+
+import edu.stuy.goldfish.Grid;
+import edu.stuy.goldfish.Patch;
+
+public class BriansBrain extends RuleSet {
+    public static int states = 3;
+
+    public static Grid run (Grid g) {
+        Grid newGrid = new Grid(g.getWidth(), g.getHeight());
+        for (int i = 0; i < g.getWidth(); i++) {
+            for (int j = 0; j < g.getHeight(); j++) {
+                Patch[] neighbors = g.getPatch(i, j).get8Neighbors();
+                int numAlive = 0;
+                for (Patch neighbor : neighbors)
+                    if (neighbor.getState() == 2) numAlive++;
+                Patch orig = g.getPatch(i,j);
+                Patch p = g.getPatch(i,j).clone(newGrid);
+                if (orig.getState() == 0 && numAlive == 2) p.setState(2);
+                if (orig.getState() == 1) p.setState(0); //Dying cells die.
+                if (orig.getState() == 2) p.setState(1); //Make living cells dying.
+                newGrid.setPatch(i,j,p);
+            }
+        }
+        return newGrid;
+    }
+}