Etc: Implement missing RGSS3 functionality (and bind in MRI)

src/etc.cpp

@@ -78,6 +78,15 @@ void Color::set(double red, double green, double blue, double alpha)
 	updateInternal();
 }
 
+void Color::set(const Color &other)
+{
+	red   = other.red;
+	green = other.green;
+	blue  = other.blue;
+	alpha = other.alpha;
+	norm  = other.norm;
+}
+
 void Color::setRed(double value)
 {
 	red = value;
@@ -183,6 +192,17 @@ void Tone::set(double red, double green, double blue, double gray)
 	valueChanged();
 }
 
+void Tone::set(const Tone &other)
+{
+	red  = other.red;
+	green= other.green;
+	blue = other.blue;
+	gray = other.gray;
+	norm = other.norm;
+
+	valueChanged();
+}
+
 void Tone::setRed(double value)
 {
 	red = value;
@@ -295,6 +315,16 @@ void Rect::set(int x, int y, int w, int h)
 	valueChanged();
 }
 
+void Rect::set(const Rect &other)
+{
+	x      = other.x;
+	y      = other.y;
+	width  = other.width;
+	height = other.height;
+
+	valueChanged();
+}
+
 void Rect::empty()
 {
 	if (!(x || y || width || height))

src/etc.h

@@ -56,6 +56,8 @@ struct Color : public Serializable
 	void updateExternal();
 
 	void set(double red, double green, double blue, double alpha);
+	void set(const Color &other);
+
 	void setRed(double value);
 	void setGreen(double value);
 	void setBlue(double value);
@@ -104,6 +106,8 @@ struct Tone : public Serializable
 	void updateInternal();
 
 	void set(double red, double green, double blue, double gray);
+	void set(const Tone &other);
+
 	void setRed(double value);
 	void setGreen(double value);
 	void setBlue(double value);
@@ -155,6 +159,7 @@ struct Rect : public Serializable
 	bool operator==(const Rect &o) const;
 	void operator=(const IntRect &rect);
 	void set(int x, int y, int w, int h);
+	void set(const Rect &other);
 
 	FloatRect toFloatRect() const
 	{