From e674116edbd61054dae994033c0b0c10259b8aed Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Sat, 16 Jul 2016 17:05:51 -0400
Subject: TITANIC: More FVector methods

---
 engines/titanic/star_control/fvector.cpp | 20 ++++++++++++++++++++
 engines/titanic/star_control/fvector.h   |  8 ++++++++
 2 files changed, 28 insertions(+)

diff --git a/engines/titanic/star_control/fvector.cpp b/engines/titanic/star_control/fvector.cpp
index a7520bf508..ce7b62bc16 100644
--- a/engines/titanic/star_control/fvector.cpp
+++ b/engines/titanic/star_control/fvector.cpp
@@ -22,6 +22,7 @@
 
 #include "titanic/star_control/fvector.h"
 #include "common/algorithm.h"
+#include "common/textconsole.h"
 
 namespace Titanic {
 
@@ -47,4 +48,23 @@ void FVector::fn3() {
 	_z *= 1.0 / hyp;
 }
 
+double FVector::getDistance(const FVector *src) const {
+	double xd = src->_x - _x;
+	double yd = src->_y - _y;
+	double zd = src->_z - _z;
+
+	return sqrt(xd * xd + yd * yd + zd * zd);
+}
+
+void FVector::fn4(FVector *dest, const FVector *v1, const FVector *v2) {
+	FVector tempVector(v1->_x + v2->_x, v1->_y + v2->_y, v1->_z + v2->_z);
+	tempVector.fn3();
+
+	*dest = tempVector;
+}
+
+void FVector::fn5(FVector *dest, const void *v) const {
+	error("TODO: FVector::fn5");
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/star_control/fvector.h b/engines/titanic/star_control/fvector.h
index 75ad2f8fe0..9af18dc71a 100644
--- a/engines/titanic/star_control/fvector.h
+++ b/engines/titanic/star_control/fvector.h
@@ -40,6 +40,14 @@ public:
 	void multiply(FVector *dest, const FVector *src);
 	void fn3();
 
+	/**
+	 * Returns the distance between a specified point and this one
+	 */
+	double getDistance(const FVector *src) const;
+
+	static void fn4(FVector *dest, const FVector *v1, const FVector *v2);
+	void fn5(FVector *dest, const void *v) const;
+
 	/**
 	 * Returns true if the passed vector equals this one
 	 */
-- 
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