Add Kue billiards gamefeat/kue

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/kue/vector.cpp b/kue/vector.cpp
new file mode 100644
index 00000000..40aed057
--- /dev/null
+++ b/kue/vector.cpp
@@ -0,0 +1,85 @@
+#include "vector.h"
+
+// Creates a vector with between two points
+vector::vector(const point &source, const point &dest) {
+	_magnitude = source.distance(dest);
+	_direction = source.angle(dest);
+}
+
+// Creates an empty vector
+vector::vector() {
+	_magnitude = 0.0;
+	_direction = 0.0;
+}
+
+// Copy another vector object
+vector::vector(const vector& v) {
+	_magnitude = v._magnitude;
+	_direction = v._direction;
+}
+
+// Set the X component
+void vector::setComponentX(double x) {
+	setComponents(x, componentY());
+}
+
+// Set the Y component
+void vector::setComponentY(double y) {
+	setComponents(componentX(), y);
+}
+
+// Operations with another vector performs vector math
+vector vector::operator+(const vector& v) {
+	double x = componentX() + v.componentX();
+	double y = componentY() + v.componentY();
+
+	return vector(sqrt((x * x) + (y * y)), atan2(y, x));	
+}
+
+vector vector::operator-(const vector& v) {
+	double x = componentX() - v.componentX();
+	double y = componentY() - v.componentY();
+
+	return vector(sqrt((x * x) + (y * y)), atan2(y, x));	
+}
+
+vector& vector::operator+=(const vector& v) {
+	setComponents(componentX() + v.componentX(), componentY() + v.componentY());
+	return *this;
+}
+
+vector& vector::operator-=(const vector& v) {
+	setComponents(componentX() - v.componentX(), componentY() - v.componentY());
+	return *this;
+}
+
+double vector::operator*(const vector& v) {
+	return ((componentX() * v.componentX()) + (componentY() * v.componentY()));
+}
+
+// Operations with a single double value affects the magnitude
+vector& vector::operator+= (double m) {
+	_magnitude += m;
+	return *this;
+}
+
+vector& vector::operator-= (double m) {
+	_magnitude -= m;
+	return *this;
+}
+
+vector& vector::operator*= (double m) {
+	_magnitude *= m;
+	return *this;
+}
+
+vector& vector::operator/= (double m) {
+	_magnitude /= m;
+	return *this;
+}
+
+// Sets both components at once (the only way to do it efficently)
+void vector::setComponents(double x, double y) {
+	_direction = atan2(y, x);
+	_magnitude = sqrt((x * x) + (y * y));
+}