godot/modules/chibi/cp_note.h

/*************************************************************************/
/*  cp_note.h                                                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
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/* "Software"), to deal in the Software without restriction, including   */
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/*************************************************************************/
#ifndef CP_NOTE_H
#define CP_NOTE_H

#include "cp_config.h"

struct CPNote {

	enum {

		NOTES = 120,
		OFF = 254,
		CUT = 253,
		EMPTY = 255,
		SCRIPT = 252,
	};

	uint8_t note;
	uint8_t instrument;
	uint8_t volume;
	uint8_t command;
	uint8_t parameter;
	unsigned int script_source_sign;
	bool cloned;

	void clear() {

		note = EMPTY;
		instrument = EMPTY;
		volume = EMPTY;
		command = EMPTY;
		parameter = 0;
		script_source_sign = '\0';
		cloned = false;
	}

	void raise() {

		if (note < (NOTES - 1))
			note++;
		else if (note == SCRIPT && parameter < 0xFF)
			parameter++;
	}

	void lower() {

		if ((note > 0) && (note < NOTES))
			note--;
		else if (note == SCRIPT && parameter > 0)
			parameter--;
	}

	bool operator==(const CPNote &rvalue) {

		return (
				(note == rvalue.note) &&
				(instrument == rvalue.instrument) &&
				(volume == rvalue.volume) &&
				(command == rvalue.command) &&
				(parameter == rvalue.parameter));
	}

	bool is_empty() const { return (note == EMPTY && instrument == EMPTY && volume == EMPTY && command == EMPTY && parameter == 0 && !cloned); }
	CPNote() {

		clear();
	}
};

#endif