From 82a21657fb29ae8afba479fb821b47b5eeb608fb Mon Sep 17 00:00:00 2001
From: Justin Worthe <justin.worthe@gmail.com>
Date: Sun, 16 Aug 2015 00:18:29 +0200
Subject: Made neural net recurrent

---
 src/brain/neuron.cpp | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

(limited to 'src/brain/neuron.cpp')

diff --git a/src/brain/neuron.cpp b/src/brain/neuron.cpp
index 527e7da..f4fa12f 100644
--- a/src/brain/neuron.cpp
+++ b/src/brain/neuron.cpp
@@ -1,25 +1,23 @@
 #include "brain/neuron.h"
 #include <cmath>
 
-Neuron::Neuron(int id)
-    :NeuralNode('n', id)
-{
-}
-
 double Neuron::sigmoid(double input) const
 {
     double slope = 4.924273;
     return (1/(1+(std::exp(-(slope*input)))));
 }
 
-double Neuron::activation() const
+void Neuron::calculateActivation()
 {
-    double activationSum = 0;
+    double newActivation = 0;
     for (auto const& link : _inputLinks)
     {
-	activationSum += link->weightedActivation();
+	newActivation += link->weightedActivation();
     }
-    return sigmoid(activationSum);
+    newActivation = sigmoid(newActivation);
+
+    _activationChanged = newActivation != _activation;
+    _activation = newActivation;
 }
 
 void Neuron::addInput(std::unique_ptr<NeuralLink>&& link)
-- 
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