Momentum-Apps/event.c

#include "event.h"

void set_note(TrackerSongPatternStep* step, uint8_t note)
{
	step->note &= 0x80;
	step->note |= (note & 0x7f);
}

void set_instrument(TrackerSongPatternStep* step, uint8_t inst)
{
	step->note &= 0x7f;
	step->inst_vol &= 0x0f;

	step->note |= ((inst & 0x10) << 3);
	step->inst_vol |= ((inst & 0xf) << 4);
}

void set_volume(TrackerSongPatternStep* step, uint8_t vol)
{
	step->command &= 0x7fff;
	step->inst_vol &= 0xf0;

	step->command |= ((vol & 0x10) << 11);
	step->inst_vol |= (vol & 0xf);
}

void set_command(TrackerSongPatternStep* step, uint16_t command)
{
	step->command &= 0x8000;
	step->command |= command & (0x7fff);
}