From 0c288cc1952809294c8d70d86b9f41b04878ac2e Mon Sep 17 00:00:00 2001
From: Eduardo Pedroni <ep625@york.ac.uk>
Date: Sun, 23 Mar 2014 18:05:13 +0000
Subject: Majorly refactored, node grid is fully implemented. About to attempt
 active path locking.

---
 src/jcgp/modules/mutator/PointMutator.java | 39 ++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 13 deletions(-)

(limited to 'src/jcgp/modules/mutator/PointMutator.java')

diff --git a/src/jcgp/modules/mutator/PointMutator.java b/src/jcgp/modules/mutator/PointMutator.java
index b06d678..ea1ed32 100644
--- a/src/jcgp/modules/mutator/PointMutator.java
+++ b/src/jcgp/modules/mutator/PointMutator.java
@@ -1,36 +1,49 @@
 package jcgp.modules.mutator;
 
-import jcgp.Utilities;
-import jcgp.parameters.IntegerParameter;
-import jcgp.parameters.Parameters;
+import java.util.HashMap;
+
+import jcgp.parameters.DoubleParameter;
+import jcgp.parameters.Parameter;
+import jcgp.CGP.Resources;
 import jcgp.population.Chromosome;
 import jcgp.population.MutableElement;
 import jcgp.population.Node;
 import jcgp.population.Output;
 
 public class PointMutator implements Mutator {
-
+	
+	private Parameter mutationRate;
+	private HashMap<String, Parameter> localParameters;
+	
 	public PointMutator() {
-		Parameters.add("mutRate", new IntegerParameter(10, "Mutation rate"));
+		mutationRate = new DoubleParameter(0.5, "Percent mutation");
+		
+		localParameters = new HashMap<String, Parameter>();
+		localParameters.put("mutRate", mutationRate);
 	}
-	
+
 	@Override
-	public void mutate(Chromosome chromosome) {
-		int mutations = (int) (((int) Parameters.get("mutRate").getValue()) * ((((double) Parameters.get("nodes").getValue()) + ((double) Parameters.get("outputs").getValue())) / 100));
-		
+	public void mutate(Chromosome chromosome, Resources resources) {
+		int mutations = (int) Math.ceil((((double) mutationRate.getValue()) * (((((Integer) resources.get("nodes")).doubleValue() + ((Integer) resources.get("outputs")).doubleValue())) / (double) 100)));
 		for (int i = 0; i < mutations; i++) {
 			MutableElement m = chromosome.getRandomMutableElement();
 			
 			if (m instanceof Output) {
-				m.setConnection(chromosome.getRandomConnection());
+				m.setConnection(0, chromosome.getRandomConnection());
 			} else if (m instanceof Node) {
-				int geneType = Utilities.getRandomInt(1 + ((int) Parameters.get("Max arity").getValue()));
+				int geneType = resources.getRandomInt(1 + ((int) resources.get("arity")));
 				if (geneType < 1) {
-					((Node) m).setFunction(Utilities.getRandomFunction());
+					((Node) m).setFunction(resources.getRandomFunction());
 				} else {
-					m.setConnection(chromosome.getRandomConnection(((Node) m).getColumn()));
+					m.setConnection(resources.getRandomInt((int) resources.get("arity")), chromosome.getRandomConnection(((Node) m).getColumn()));
 				}
 			}
 		}
 	}
+
+	@Override
+	public HashMap<String, Parameter> activate(Resources parameters) {
+		return localParameters;
+	}
+
 }
-- 
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