From 70ec00285128f8f9f5fa0e848950212e6a235d43 Mon Sep 17 00:00:00 2001
From: Justin Worthe <justin.worthe@gmail.com>
Date: Fri, 14 Aug 2015 22:12:56 +0200
Subject: Added missing sensors

---
 src/brain/neural_network.cpp | 81 +++++++++++++++++++++-----------------------
 1 file changed, 38 insertions(+), 43 deletions(-)

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

diff --git a/src/brain/neural_network.cpp b/src/brain/neural_network.cpp
index d6a5e15..9061194 100644
--- a/src/brain/neural_network.cpp
+++ b/src/brain/neural_network.cpp
@@ -1,5 +1,6 @@
 #include "brain/neural_network.h"
 #include "brain/neuron.h"
+#include <limits>
 
 NeuralNetwork::NeuralNetwork(std::istream &&networkConfigFile, int numberOfSensors, int numberOfOutputs)
 {
@@ -11,7 +12,9 @@ NeuralNetwork::NeuralNetwork(std::istream &&networkConfigFile, int numberOfSenso
     }
     for (int i=0; i<numberOfOutputs; ++i)
     {
-	_outputs[i] = std::make_shared<Neuron>(i);
+	auto output = std::make_shared<Neuron>(i);
+	_outputs.push_back(output);
+	_neurons[i] = output;
     }
 
     parseFile(std::move(networkConfigFile));
@@ -21,15 +24,17 @@ NeuralNetwork::NeuralNetwork(std::istream &&networkConfigFile, std::vector<bool>
 {
     _biasNode = std::make_shared<BiasNode>();
     
-    for (int i=0; i<sensorInitialValues.size(); ++i)
+    for (unsigned int i=0; i<sensorInitialValues.size(); ++i)
     {
 	auto sensor = std::make_shared<Sensor>(i);
-	sensor->setActivation(sensorInitialValues.at(i) ? 1 : 0);
+	sensor->setActivation(sensorInitialValues[i] ? 1 : 0);
 	_sensors[i] = sensor;
     }
     for (int i=0; i<numberOfOutputs; ++i)
     {
-	_outputs[i] = std::make_shared<Neuron>(i);
+	auto output = std::make_shared<Neuron>(i);
+	_outputs.push_back(output);
+	_neurons[i] = output;
     }
 
     parseFile(std::move(networkConfigFile));
@@ -38,14 +43,18 @@ NeuralNetwork::NeuralNetwork(std::istream &&networkConfigFile, std::vector<bool>
 void NeuralNetwork::parseFile(std::istream &&file)
 {
     double weight;
-    for (std::string src, dest;
-	 file >> src && file >> dest && file >> weight; )
-    {
-	char srcType = src.at(0);
-	int srcId = std::stoi(src.substr(1));
-	char destType = dest.at(0);
-	int destId = std::stoi(dest.substr(1));
+    char srcType;
+    int srcId;
+    int destId;
 
+    while (file.get(srcType) &&
+	   file >> srcId &&
+	   file.ignore(std::numeric_limits<std::streamsize>::max(), 'n') &&
+	   file >> destId &&
+	   file >> weight &&
+	   file.ignore(std::numeric_limits<std::streamsize>::max(), '\n'))
+    {
+	
 	std::shared_ptr<NeuralNode> source;
 	std::shared_ptr<Neuron> destination;
 	switch (srcType)
@@ -56,21 +65,11 @@ void NeuralNetwork::parseFile(std::istream &&file)
 	case 'b':
 	    source = _biasNode;
 	    break;
-	case 'n':
-	    source = findOrAddNeuron(srcId);
-	    break;
 	default:
-	    throw 1;
-	}
-	switch (destType)
-	{
-	case 'n':
-	    destination = findOrAddNeuron(destId);
-	    break;
-	default:
-	    throw 1;
+	    source = findOrAddNeuron(srcId);
 	}
-
+	destination = findOrAddNeuron(destId);
+	
 	addLink(source, destination, weight);
     }
 	 
@@ -78,34 +77,30 @@ void NeuralNetwork::parseFile(std::istream &&file)
 
 void NeuralNetwork::addLink(std::shared_ptr<NeuralNode> source, std::shared_ptr<Neuron> destination, double weight)
 {
-    auto link = std::make_shared<NeuralLink>(source, weight);
-    destination->addInput(link);
+    std::unique_ptr<NeuralLink> link(new NeuralLink(source, weight));
+    destination->addInput(std::move(link));
 }
 
 std::shared_ptr<Sensor> NeuralNetwork::findOrAddSensor(int id)
 {
-    bool sensorExists = _sensors.count(id) > 0;
-    if (!sensorExists)
+    auto sensor = _sensors[id];
+    if (!sensor)
     {
-	_sensors[id] = std::make_shared<Sensor>(id);
+	sensor = std::make_shared<Sensor>(id);
+	_sensors[id] = sensor;
     }
-    return _sensors.at(id);
+    return sensor;
 }
 
 std::shared_ptr<Neuron> NeuralNetwork::findOrAddNeuron(int id)
 {
-    bool isOutput = _outputs.count(id) > 0;
-    if (isOutput)
-    {
-	return _outputs.at(id);
-    }
-
-    bool hiddenNeuronExists = _hiddenNodes.count(id) > 0;
-    if (!hiddenNeuronExists)
+    auto neuron = _neurons[id];
+    if (!neuron)
     {
-	_hiddenNodes[id] = std::make_shared<Neuron>(id);
+	neuron = std::make_shared<Neuron>(id);
+	_neurons[id] = neuron;
     }
-    return _hiddenNodes.at(id);
+    return neuron;
 }
 
 void NeuralNetwork::setInput(int inputIndex, double activation)
@@ -117,13 +112,13 @@ int NeuralNetwork::findMaxOutputIndex() const
 {
     double currentMaxActivation = 0;
     int currentMaxIndex = 0;
-    for (std::pair<const int, std::shared_ptr<Neuron>> outputPair : _outputs)
+    for (unsigned int i=0; i<_outputs.size(); ++i)
     {
-	double activation = outputPair.second->activation();
+	double activation = _outputs[i]->activation();
 	if (activation >= currentMaxActivation)
 	{
 	    currentMaxActivation = activation;
-	    currentMaxIndex = outputPair.first;
+	    currentMaxIndex = i;
 	}
     }
     return currentMaxIndex;
-- 
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