From e758c9a1c5f0234470af99ebe669fcfaf0095794 Mon Sep 17 00:00:00 2001
From: David Wilson <gigaclon@users.sourceforge.net>
Date: Wed, 17 Dec 2003 01:44:03 +0000
Subject: [PATCH] Class for statistical Foot Ranking model

---
 stepmania/src/FootModel.cpp | 39 ++++++++++++++++++++++++++++++++++++
 stepmania/src/FootModel.h   | 40 +++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 stepmania/src/FootModel.cpp
 create mode 100644 stepmania/src/FootModel.h

diff --git a/stepmania/src/FootModel.cpp b/stepmania/src/FootModel.cpp
new file mode 100644
index 0000000000..c2fef5b319
--- /dev/null
+++ b/stepmania/src/FootModel.cpp
@@ -0,0 +1,39 @@
+#include "global.h"
+/*
+-----------------------------------------------------------------------------
+ Class: FootModel
+
+ Desc: See header.
+
+ Copyright (c) 2003 by the person(s) listed below.  All rights reserved.
+	David Wilson
+-----------------------------------------------------------------------------
+*/
+#include "Steps.h"
+#include "FootModel.h"
+
+
+FootModel::FootModel(Steps* model)
+{	
+	//Define and Init Non-Radar Values
+	double SV;
+	double ChaosSquare;
+	SV = model->GetRadarValues()[RADAR_STREAM] * model->GetRadarValues()[RADAR_VOLTAGE];
+	ChaosSquare = model->GetRadarValues()[RADAR_CHAOS] * model->GetRadarValues()[RADAR_CHAOS];
+
+	m_predictedMeter = BETA_ZERO;
+	m_predictedMeter += STREAM * model->GetRadarValues()[RADAR_STREAM];
+	m_predictedMeter += VOLTAGE * model->GetRadarValues()[RADAR_VOLTAGE];
+	m_predictedMeter += AIR * model->GetRadarValues()[RADAR_AIR];
+	m_predictedMeter += FREEZE * model->GetRadarValues()[RADAR_FREEZE];
+	m_predictedMeter += CHAOS * model->GetRadarValues()[RADAR_CHAOS];
+	m_predictedMeter += SXV * SV;
+	m_predictedMeter += CSQUARE * ChaosSquare;
+	if (model->GetDifficulty() == DIFFICULTY_HARD) m_predictedMeter += HEAVY;
+	if (model->GetDifficulty() == DIFFICULTY_EASY) m_predictedMeter += LIGHT;
+}
+
+FootModel::GetPMeter()
+{
+	return m_predictedMeter;
+}
\ No newline at end of file
diff --git a/stepmania/src/FootModel.h b/stepmania/src/FootModel.h
new file mode 100644
index 0000000000..711063211f
--- /dev/null
+++ b/stepmania/src/FootModel.h
@@ -0,0 +1,40 @@
+#ifndef FOOTMODEL_H
+#define FOOTMODEL_H
+/*
+-----------------------------------------------------------------------------
+ File: FootModel.h
+
+ Desc: Holds the equation for the statistical model for determining foot
+	   ranking from Groove Radar and difficulty
+
+ Copyright (c) 2003 by the person(s) listed below.  All rights reserved.
+	David Wilson
+-----------------------------------------------------------------------------
+*/
+/*
+Meter = 0.775 + 10.1 Stream + 5.27 Voltage - 0.905 Air - 1.10 Freeze
+           + 2.86 Chaos + 0.722 Heavy - 0.877 Light - 6.35 SV Interaction
+           - 2.58 CSQ
+*/
+class FootModel
+{
+private:
+	
+	//Model Coefficients
+	#define BETA_ZERO	(0.775)
+	#define STREAM		(10.1)
+	#define VOLTAGE		(5.27)
+	#define AIR			(-0.905)
+	#define FREEZE		(-1.10)
+	#define CHAOS		(2.86)
+	#define HEAVY		(0.722)
+	#define LIGHT		(-0.877)
+	#define SXV			(-6.35) // Square/Voltage Interaction Varible
+	#define CSQUARE		(-2.58)
+	double m_predictedMeter;
+
+public:
+	FootModel(Steps* model);
+	double GetPMeter;
+};
+#endif
\ No newline at end of file