create display::blindfold accessors

src/display.cpp

@@ -208,6 +208,8 @@ display::display(unit_map* units, CVideo& video, const gamemap* map, const std::
 {
 	singleton_ = this;
 
+	blindfold_ctr_ = 0;
+
 	read(level.child_or_empty("display"));
 
 	if(non_interactive()
@@ -576,6 +578,19 @@ void display::change_teams(const std::vector<team>* teams)
 	teams_ = teams;
 }
 
+void display::blindfold(bool value)
+{
+	if(value == true)
+		++blindfold_ctr_;
+	else
+		--blindfold_ctr_;
+}
+
+bool display::is_blindfolded() const
+{
+	return blindfold_ctr_ > 0;
+}
+
 
 const SDL_Rect& display::max_map_area() const
 {

src/display.hpp

@@ -599,6 +599,9 @@ public:
 
 	virtual bool has_time_area() const {return false;}
 
+	void blindfold(bool flag);
+	bool is_blindfolded() const;
+
 	void write(config& cfg) const;
 private:
 	void read(const config& cfg);
@@ -620,6 +623,7 @@ private:
 	 */
 	const SDL_Rect& calculate_energy_bar(surface surf);
 
+	int blindfold_ctr_;
 
 protected:
 	//TODO sort