nuclear@2: #ifndef BOOLANIM_H_
nuclear@2: #define BOOLANIM_H_
nuclear@2: 
nuclear@2: class BoolAnim {
nuclear@2: private:
nuclear@2: 	mutable float value;
nuclear@2: 	mutable float trans_dir;	// transition direction (sign)
nuclear@2: 	long trans_start;	// transition start time
nuclear@2: 	long trans_dur;
nuclear@2: 
nuclear@2: 	long (*get_msec)();
nuclear@2: 
nuclear@2: 	void update(long tm) const;
nuclear@2: 
nuclear@2: public:
nuclear@2: 	BoolAnim(bool st = false);
nuclear@2: 
nuclear@2: 	void set_transition_duration(long dur);
nuclear@2: 	void set_time_callback(long (*time_func)());
nuclear@2: 
nuclear@3: 	void set(bool st);
nuclear@3: 
nuclear@2: 	void change(bool st);
nuclear@2: 	void change(bool st, long trans_start);
nuclear@2: 
nuclear@2: 	bool get_state() const;
nuclear@2: 	bool get_state(long tm) const;
nuclear@2: 
nuclear@2: 	float get_value() const;
nuclear@2: 	float get_value(long tm) const;
nuclear@2: 
nuclear@2: 	// transition direction (-1, 0, 1)
nuclear@2: 	float get_dir() const;
nuclear@2: 	float get_dir(long tm) const;
nuclear@2: 
nuclear@2: 	operator bool() const;	// equivalent to get_state
nuclear@2: 	operator float() const;	// equivalent to get_value
nuclear@2: };
nuclear@2: 
nuclear@2: #endif	// BOOLANIM_H_