Added fitness evaluation mechanism, though it might not be a very good design. Tests will be done to verify that.

1 files changed, 20 insertions, 2 deletions

diff --git a/src/jcgp/ea/StandardMutator.java b/src/jcgp/ea/StandardMutator.java
index 731215d..cab5c76 100644
--- a/src/jcgp/ea/StandardMutator.java
+++ b/src/jcgp/ea/StandardMutator.java
@@ -1,13 +1,31 @@
 package jcgp.ea;
 
+import jcgp.CGP.Parameters;
+import jcgp.CGP.Utilities;
 import jcgp.population.Chromosome;
+import jcgp.population.MutableElement;
+import jcgp.population.Node;
+import jcgp.population.Output;
 
 public class StandardMutator implements Mutator {
 
 	@Override
 	public void mutate(Chromosome chromosome) {
+		int mutations = (int) (Parameters.getMutationRate() * ((double) Parameters.getNodeNumber() / 100));
 		
-		
+		for (int i = 0; i < mutations; i++) {
+			MutableElement m = Utilities.getRandomMutable(chromosome);
+			
+			if (m instanceof Output) {
+				m.setConnection(Utilities.getRandomConnection(chromosome, m.getColumn()));
+			} else if (m instanceof Node) {
+				int geneType = Utilities.getRandomInt(1 + Parameters.getMaxArity());
+				if (geneType < 1) {
+					((Node) m).setFunction(Utilities.getRandomFunction());
+				} else {
+					m.setConnection(Utilities.getRandomConnection(chromosome, m.getColumn()));
+				}
+			}
+		}
 	}
-
 }