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functions.js
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function clone(a) {
return JSON.parse(JSON.stringify(a));
}
function init_preset() {
// clone selected preset into 'pdata'
pdata = clone( presets[selected_preset] );
// Init velocity screen
for(var i = 0; i < 6; i++) {
var m_cc = velocity_track_to_mr_cc(i + 1, pdata.track_velocity[i]);
mr_set_velocity(m_cc);
}
// Init pattern screen
for(var i = 0; i < 6; i++) {
var m_cc = pattern_track_to_mr_cc(i + 1, pdata.track_pattern[i]);
mr_set_pattern(m_cc);
}
// Init note/random screen
for(var i = 0; i < 6; i++) {
var m_cc = note_ran_track_to_mr_cc(i + 1, pdata.track_note_ran[i]);
mr_set_note_ran(m_cc);
}
// Init root note screen
mr_set_root_note(root_note_to_mr_cc(pdata.root_note));
// Init chord prog screen
mr_set_chord_prog(chord_prog_to_mr_cc(pdata.chord_prog));
// Init preset screen
mr_set_preset(preset_to_mr_cc(selected_preset));
// Init BPM screen
mr_set_bpm(999);
current_chord = chord_progressions[pdata.chord_prog][prog_spot];
current_root = pdata.root_note + chord_positions[current_chord];
}
function tap_bpm() {
// have another process make this blink with the tempo
// Does a running average of the last four taps, min bpm 30
// reset to wait for tap 1 after 2 sec of no taps
if(bpm_tap_prev_time[0] > 0) {
var diff = process.hrtime(bpm_tap_prev_time);
var nano_diff = diff[0] * 1000000000 + diff[1];
if( nano_diff < 2000000000) { // 2 seconds
if(bpm_tap_arr.length == 4) {
bpm_tap_arr.shift();
}
bpm_tap_arr.push( 60 / (nano_diff / 1000000000) );
if(bpm_tap_arr.length == 4) {
var sum = bpm_tap_arr[0] + bpm_tap_arr[1]
sum += bpm_tap_arr[2] + bpm_tap_arr[3];
pdata.bpm = Math.floor(sum / 4);
}
} else {
bpm_tap_arr = [];
}
}
bpm_tap_prev_time = process.hrtime();
}
function blink_bpm() {
if(mr_bpm_sn == mr_current_sn) {
midiren_output.sendMessage([175 + MIDIREN_CH, 61, 127]);
setTimeout(function() {
if(mr_bpm_sn == mr_current_sn) {
midiren_output.sendMessage([175 + MIDIREN_CH, 61, 0]);
}
}, 10);
}
}
function ms_per_tick() {
return 1000 / (pdata.bpm / 60) / PPQ;
}
function ns_per_tick() {
return ms_per_tick() * 1000000;
}
function run_output_timeout() {
midi_output_timeout = setTimeout(function() {
//////////////////////
// MIDI Logic Per Tick
if(midiren_play){
midi_logic_per_tick();
}
if(bpm_clock >= PPQ) {
blink_bpm();
bpm_clock = 0;
}
bpm_clock++;
// Offsets next tick by detected offset.
// Offset detected as difference in time vs expected time
var diff = process.hrtime(time);
time = process.hrtime();
prev_tick = prev_tick - ((diff[1] - ns_per_tick()) / 1000000);
run_output_timeout();
}, prev_tick);
}
function midi_logic_per_tick() {
// current_pulse > 0 ----> makes sure that the bd hits on 0, sounds better
// Random Track 1
if(Math.floor(Math.random() * 7) + 1 <= pdata.track_note_ran[0] && current_pulse > 0){
r_applied_t1 = Math.floor(Math.random() * 16);
} else {
r_applied_t1 = current_pulse;
}
// Random Track 2
if(Math.floor(Math.random() * 7) + 1 <= pdata.track_note_ran[1]){
r_applied_t2 = Math.floor(Math.random() * 16);
} else {
r_applied_t2 = current_pulse;
}
///////////////////
// Track 1 - NES BD
if(p_t1_bd[current_pattern_t1].charAt(r_applied_t1) == 'x') {
midi_output.sendMessage([158, 57, pdata.track_velocity[0]]);
setTimeout(function(){ midi_output.sendMessage([158, 57, 0]); }, 250);
}
///////////////////
// Track 1 - NES SN
if(p_t1_sn[current_pattern_t1].charAt(r_applied_t1) == 'x') {
midi_output.sendMessage([158, 60, pdata.track_velocity[0]]);
setTimeout(function(){ midi_output.sendMessage([158, 60, 0]); }, 250);
}
/////////////////////////////////
// Track 2 - Other NES Percussion
var t2_char = p_t2[current_pattern_t2].charAt(r_applied_t2);
var t2_num = p_t2_letter_to_notenum[t2_char];
if(t2_num > 0) {
// Timeout on initial message so BD and SN can trigger, NES quirk
setTimeout(function(){
midi_output.sendMessage([158, t2_num, pdata.track_velocity[1]]);
}, 10);
setTimeout(function(){ midi_output.sendMessage([158, t2_num, 0]); }, 250);
}
//////////////////////////
// Track 3 - NES Mega Inst
var t3_char = p_t3[current_pattern_t3].charAt(current_pulse);
var prev_pulse = current_pulse - 1;
if(prev_pulse < 0) {
prev_pulse = (BEATS_PER_MEASURE * PPQ) - 1;
}
var t3_char_prev = p_t3[current_pattern_t3].charAt(prev_pulse);
if(t3_char == 'x') {
var chord_n = p_t3_n[current_note_t3].charAt(current_pulse);
if(chord_n == 'r') {
chord_n = Math.floor(Math.random() * 9) + 1;
} else {
chord_n = parseInt(chord_n);
}
var chord_spot = chord_n % chord_notes[current_chord].length;
var translated_num = chord_notes[current_chord][chord_spot];
var chord_octaves = Math.floor(chord_n / chord_notes[current_chord].length);
translated_num += chord_octaves * 12;
current_t3_num = translated_num + current_root;
// If prev char was 'x', then send midi note off
if(t3_char_prev == 'x' || t3_char_prev == '>'
|| current_pattern_t3 != prev_t3_p) {
midi_output.sendMessage([138, prev_played_num_t3+12, 30]);
midi_output.sendMessage([139, prev_played_num_t3, 30]);
midi_output.sendMessage([140, prev_played_num_t3-12, 30]);
}
midi_output.sendMessage([154, current_t3_num+12, pdata.track_velocity[2]]);
midi_output.sendMessage([155, current_t3_num, pdata.track_velocity[2]]);
midi_output.sendMessage([156, current_t3_num-12, pdata.track_velocity[2]]);
prev_played_num_t3 = current_t3_num;
} else if(t3_char == '-') {
// If prev char was 'x', then send midi note off
if(t3_char_prev == 'x' || t3_char_prev == '>'
|| current_pattern_t3 != prev_t3_p) {
midi_output.sendMessage([138, prev_played_num_t3+12, 30]);
midi_output.sendMessage([139, prev_played_num_t3, 30]);
midi_output.sendMessage([140, prev_played_num_t3-12, 30]);
}
}
prev_t3_p = current_pattern_t3;
//////////////////////
// Track 4 - Shruthi-1=
var t4_char = p_t4[current_pattern_t4].charAt(current_pulse);
var prev_pulse = current_pulse - 1;
if(prev_pulse < 0) {
prev_pulse = (BEATS_PER_MEASURE * PPQ) - 1;
}
var t4_char_prev = p_t4[current_pattern_t4].charAt(prev_pulse);
if(t4_char == 'x') {
var chord_n = p_t4_n[current_note_t4].charAt(current_pulse);
if(chord_n == 'r') {
chord_n = Math.floor(Math.random() * 9) + 1;
} else {
chord_n = parseInt(chord_n);
}
var chord_spot = chord_n % chord_notes[current_chord].length;
var translated_num = chord_notes[current_chord][chord_spot];
var chord_octaves = Math.floor(chord_n / chord_notes[current_chord].length);
translated_num += chord_octaves * 12;
current_t4_num = translated_num + current_root;
// If prev char was 'x', then send midi note off
if(t4_char_prev == 'x' || t4_char_prev == '>'
|| current_pattern_t4 != prev_t4_p) {
midi_output.sendMessage([133, prev_played_num_t4, 127]);
}
midi_output.sendMessage([149, current_t4_num, pdata.track_velocity[3]]);
prev_played_num_t4 = current_t4_num;
} else if(t4_char == '-') {
// If prev char was 'x', then send midi note off
if(t4_char_prev == 'x' || t4_char_prev == '>'
|| current_pattern_t4 != prev_t4_p) {
midi_output.sendMessage([133, prev_played_num_t4, 127]);
}
}
prev_t4_p = current_pattern_t4;
//////////////
// Pulse Logic
if(current_pulse + 1 == BEATS_PER_MEASURE * PPQ) {
current_pulse = 0;
current_pattern_t1 = pdata.track_pattern[0];
current_pattern_t2 = pdata.track_pattern[1];
current_pattern_t3 = pdata.track_pattern[2];
current_pattern_t4 = pdata.track_pattern[3];
current_pattern_t5 = pdata.track_pattern[4];
current_pattern_t6 = pdata.track_pattern[5];
current_note_t3 = pdata.track_note_ran[2];
current_note_t4 = pdata.track_note_ran[3];
current_note_t5 = pdata.track_note_ran[4];
current_note_t6 = pdata.track_note_ran[5];
prog_spot++;
if(prog_spot >= chord_progressions[pdata.chord_prog].length) {
prog_spot = 0;
}
current_chord = chord_progressions[pdata.chord_prog][prog_spot];
current_root = pdata.root_note + chord_positions[current_chord];
} else {
current_pulse++;
}
light_pattern_jump();
}
function light_pattern_jump() {
if(current_pulse % (PPQ / 2) == 0) {
if(que_jump > 0) {
jump_pos = jump_ccs.indexOf(que_jump);
current_pulse = jump_pos * (PPQ / 2);
midi_panic();
que_jump = 0;
}
jump_pos = Math.floor(current_pulse / (PPQ / 2));
var cc_level = 0;
for(var i = 0; i < jump_ccs.length; i++) {
if(jump_pos == i) {
cc_level = 127;
} else {
cc_level = 0;
}
midiren_output.sendMessage([175 + MIDIREN_CH, jump_ccs[i], cc_level]);
}
}
}
function midi_panic() {
// Single note off on channel 6 (Shruthi-1)
/*for(var i = 0; i <= 127; i++) {
midi_output.sendMessage([133, i, 30]);
}*/
midi_output.sendMessage([133, prev_played_num_t4, 127]);
// Single note off message on channels 11-13 (NES)
midi_output.sendMessage([138, 0, 30]);
midi_output.sendMessage([139, 0, 30]);
midi_output.sendMessage([140, 0, 30]);
}
// MIDIRen set functions
// Sets variable and changes LEDs on MIDIRen if neccessary
function mr_set_preset(mr_cc) {
var ps_s = [
[42,36,30,24,18,12,6,0],
[43,37,31,25,19,13,7,1],
[44,38,32,26,20,14,8,2],
[45,39,33,27,21,15,9,3],
[46,40,34,28,22,16,10,4],
[47,41,35,29,23,17,11,5]
];
// Build preset screen and update selected preset
var prev_preset = selected_preset;
var do_init = false;
for(var i = 0; i < track_ccs.length; i++) {
for(var j = 0; j < track_ccs[i].length; j++) {
if(track_ccs[i][j] === parseInt(mr_cc)) {
selected_preset = ps_s[i][j];
if(prev_preset != selected_preset) {
do_init = true;
}
mrs[mr_preset_sn][mr_cc] = 127;
} else {
mrs[mr_preset_sn][track_ccs[i][j]] = 0;
}
}
}
if(mr_preset_sn == mr_current_sn) {
mr_screen_refresh();
}
if(do_init) {
init_preset();
}
}
function mr_set_bpm(mr_cc) {
var digit_1 = [0,1,2,3,16,17,4,5,6,7];
var digit_2 = [8,9,10,11,24,25,12,13,14,15];
var digit_3 = [32,33,34,35,48,49,36,37,38,39];
if(mr_cc == 40 && !ext_bpm) {
pdata.bpm -= 10;
} else if(mr_cc == 41 && !ext_bpm) {
pdata.bpm -= 5;
} else if(mr_cc == 42 && !ext_bpm) {
pdata.bpm -= 1;
} else if(mr_cc == 43 && !ext_bpm) {
pdata.bpm += 1;
} else if(mr_cc == 56 && !ext_bpm) {
pdata.bpm += 5;
} else if(mr_cc == 57 && !ext_bpm) {
pdata.bpm += 10;
} else if(mr_cc == 44) {
midiren_play = true;
prog_spot = 0;
current_pulse = 0;
current_chord = chord_progressions[pdata.chord_prog][prog_spot];
current_root = pdata.root_note + chord_positions[current_chord];
// light up initial jump position
light_pattern_jump();
} else if(mr_cc == 45) {
midiren_play = false;
midi_panic();
// Clear all jump cc's
for(var i = 0; i < jump_ccs.length; i++) {
midiren_output.sendMessage([175 + MIDIREN_CH, jump_ccs[i], 0]);
}
} else if(mr_cc == 46) {
ext_bpm = true;
clearTimeout(midi_output_timeout);
} else if(mr_cc == 47) {
ext_bpm = false;
run_output_timeout(0);
} else if(mr_cc == 60) {
pdata.bpm = presets[selected_preset].bpm;
} else if(mr_cc == 61 && !ext_bpm) {
tap_bpm();
} else if(digit_1.indexOf(mr_cc) != -1 && !ext_bpm) {
var temp_bpm = pdata.bpm % 100;
pdata.bpm = temp_bpm + (100 * digit_1.indexOf(mr_cc));
} else if(digit_2.indexOf(mr_cc) != -1 && !ext_bpm) {
var temp_bpm_h = Math.floor(pdata.bpm / 100) * 100;
var temp_bpm_ones = pdata.bpm % 10;
pdata.bpm = temp_bpm_h + (10 * digit_2.indexOf(mr_cc)) + temp_bpm_ones;
} else if(digit_3.indexOf(mr_cc) != -1 && !ext_bpm) {
var temp_bpm = Math.floor(pdata.bpm / 10) * 10;
pdata.bpm = temp_bpm + digit_3.indexOf(mr_cc);
}
// Correct BPM if too big or too small
if(pdata.bpm < 30) {
pdata.bpm = 30;
} else if(pdata.bpm > 500) {
pdata.bpm = 500;
}
// Update bpm screen
for(var i = 0; i < digit_1.length; i++) {
var temp_bpm_h = Math.floor(pdata.bpm / 100);
if(temp_bpm_h == i) {
mrs[mr_bpm_sn][digit_1[i]] = 127;
} else {
mrs[mr_bpm_sn][digit_1[i]] = 0;
}
}
for(var i = 0; i < digit_2.length; i++) {
var temp_bpm = pdata.bpm % 100;
temp_bpm = Math.floor(temp_bpm / 10);
if(temp_bpm == i) {
mrs[mr_bpm_sn][digit_2[i]] = 127;
} else {
mrs[mr_bpm_sn][digit_2[i]] = 0;
}
}
for(var i = 0; i < digit_3.length; i++) {
var temp_bpm = pdata.bpm % 10;
if(temp_bpm == i) {
mrs[mr_bpm_sn][digit_3[i]] = 127;
} else {
mrs[mr_bpm_sn][digit_3[i]] = 0;
}
}
if(midiren_play) {
mrs[mr_bpm_sn][44] = 127;
mrs[mr_bpm_sn][45] = 0;
} else {
mrs[mr_bpm_sn][44] = 0;
mrs[mr_bpm_sn][45] = 127;
}
if(ext_bpm) {
mrs[mr_bpm_sn][46] = 127;
mrs[mr_bpm_sn][47] = 0;
} else {
mrs[mr_bpm_sn][46] = 0;
mrs[mr_bpm_sn][47] = 127;
}
if(mr_bpm_sn == mr_current_sn) {
mr_screen_refresh();
}
}
function mr_set_chord_prog(mr_cc) {
var chord_progs = [
[42,36,30,24,18,12,6,0],
[43,37,31,25,19,13,7,1],
[44,38,32,26,20,14,8,2],
[45,39,33,27,21,15,9,3],
[46,40,34,28,22,16,10,4],
[47,41,35,29,23,17,11,5]
];
// Build chord prog screen and update root note
for(var i = 0; i < track_ccs.length; i++) {
for(var j = 0; j < track_ccs[i].length; j++) {
if(track_ccs[i][j] === parseInt(mr_cc)) {
pdata.chord_prog = chord_progs[i][j];
prog_spot = 999;
mrs[mr_chord_prog_sn][mr_cc] = 127;
} else {
mrs[mr_chord_prog_sn][track_ccs[i][j]] = 0;
}
}
}
if(mr_chord_prog_sn == mr_current_sn) {
mr_screen_refresh();
}
}
function mr_set_root_note(mr_cc) {
var root_notes = [
[24,30,36,42,48,54,60,66],
[25,31,37,43,49,55,61,67],
[26,32,38,44,50,56,62,68],
[27,33,39,45,51,57,63,69],
[28,34,40,46,52,58,64,70],
[29,35,41,47,53,59,65,71]
];
// Build root note screen and update root note
for(var i = 0; i < track_ccs.length; i++) {
for(var j = 0; j < track_ccs[i].length; j++) {
if(track_ccs[i][j] === parseInt(mr_cc)) {
pdata.root_note = root_notes[i][j];
mrs[mr_root_note_sn][mr_cc] = 127;
} else {
mrs[mr_root_note_sn][track_ccs[i][j]] = 0;
}
}
}
if(mr_root_note_sn == mr_current_sn) {
mr_screen_refresh();
}
}
function mr_set_note_ran(mr_cc) {
var track_num = 1;
var note_ran_num = 0;
switch(mr_cc) {
// Track 1
case 44:
track_num = 1;
note_ran_num = 0;
break;
case 40:
track_num = 1;
note_ran_num = 1;
break;
case 36:
track_num = 1;
note_ran_num = 2;
break;
case 32:
track_num = 1;
note_ran_num = 3;
break;
case 12:
track_num = 1;
note_ran_num = 4;
break;
case 8:
track_num = 1;
note_ran_num = 5;
break;
case 4:
track_num = 1;
note_ran_num = 6;
break;
case 0:
track_num = 1;
note_ran_num = 7;
break;
// Track 2
case 45:
track_num = 2;
note_ran_num = 0;
break;
case 41:
track_num = 2;
note_ran_num = 1;
break;
case 37:
track_num = 2;
note_ran_num = 2;
break;
case 33:
track_num = 2;
note_ran_num = 3;
break;
case 13:
track_num = 2;
note_ran_num = 4;
break;
case 9:
track_num = 2;
note_ran_num = 5;
break;
case 5:
track_num = 2;
note_ran_num = 6;
break;
case 1:
track_num = 2;
note_ran_num = 7;
break;
// Track 3
case 46:
track_num = 3;
note_ran_num = 0;
break;
case 42:
track_num = 3;
note_ran_num = 1;
break;
case 38:
track_num = 3;
note_ran_num = 2;
break;
case 34:
track_num = 3;
note_ran_num = 3;
break;
case 14:
track_num = 3;
note_ran_num = 4;
break;
case 10:
track_num = 3;
note_ran_num = 5;
break;
case 6:
track_num = 3;
note_ran_num = 6;
break;
case 2:
track_num = 3;
note_ran_num = 7;
break;
// Track 4
case 47:
track_num = 4;
note_ran_num = 0;
break;
case 43:
track_num = 4;
note_ran_num = 1;
break;
case 39:
track_num = 4;
note_ran_num = 2;
break;
case 35:
track_num = 4;
note_ran_num = 3;
break;
case 15:
track_num = 4;
note_ran_num = 4;
break;
case 11:
track_num = 4;
note_ran_num = 5;
break;
case 7:
track_num = 4;
note_ran_num = 6;
break;
case 3:
track_num = 4;
note_ran_num = 7;
break;
// Track 5
case 60:
track_num = 5;
note_ran_num = 0;
break;
case 56:
track_num = 5;
note_ran_num = 1;
break;
case 52:
track_num = 5;
note_ran_num = 2;
break;
case 48:
track_num = 5;
note_ran_num = 3;
break;
case 28:
track_num = 5;
note_ran_num = 4;
break;
case 24:
track_num = 5;
note_ran_num = 5;
break;
case 20:
track_num = 5;
note_ran_num = 6;
break;
case 16:
track_num = 5;
note_ran_num = 7;
break;
// Track 6
case 61:
track_num = 6;
note_ran_num = 0;
break;
case 57:
track_num = 6;
note_ran_num = 1;
break;
case 53:
track_num = 6;
note_ran_num = 2;
break;
case 49:
track_num = 6;
note_ran_num = 3;
break;
case 29:
track_num = 6;
note_ran_num = 4;
break;
case 25:
track_num = 6;
note_ran_num = 5;
break;
case 21:
track_num = 6;
note_ran_num = 6;
break;
case 17:
track_num = 6;
note_ran_num = 7;
break;
default:
// no change
}
pdata.track_note_ran[track_num - 1] = note_ran_num; // set new pattern
// Update note/random screen. Clear then set for target track.
for(var i = 0; i < track_ccs[track_num - 1].length; i++) {
mrs[mr_note_ran_sn][track_ccs[track_num - 1][i]] = 0;
}
mrs[mr_note_ran_sn][mr_cc] = 127;
if(mr_note_ran_sn == mr_current_sn) {
mr_screen_refresh();
}
}
function mr_set_pattern(mr_cc) {
var track_num = 1;
var pattern_num = 0;
switch(mr_cc) {
// Track 1
case 44:
track_num = 1;
pattern_num = 0;
break;
case 40:
track_num = 1;
pattern_num = 1;
break;
case 36:
track_num = 1;
pattern_num = 2;
break;
case 32:
track_num = 1;
pattern_num = 3;
break;
case 12:
track_num = 1;
pattern_num = 4;
break;
case 8:
track_num = 1;
pattern_num = 5;
break;
case 4:
track_num = 1;
pattern_num = 6;
break;
case 0:
track_num = 1;
pattern_num = 7;
break;
// Track 2
case 45:
track_num = 2;
pattern_num = 0;
break;
case 41:
track_num = 2;
pattern_num = 1;
break;
case 37:
track_num = 2;
pattern_num = 2;
break;
case 33:
track_num = 2;
pattern_num = 3;
break;
case 13:
track_num = 2;
pattern_num = 4;
break;
case 9:
track_num = 2;
pattern_num = 5;
break;
case 5:
track_num = 2;
pattern_num = 6;
break;
case 1:
track_num = 2;
pattern_num = 7;
break;
// Track 3
case 46:
track_num = 3;
pattern_num = 0;
break;
case 42:
track_num = 3;
pattern_num = 1;
break;
case 38:
track_num = 3;
pattern_num = 2;
break;
case 34:
track_num = 3;
pattern_num = 3;
break;
case 14:
track_num = 3;
pattern_num = 4;
break;
case 10:
track_num = 3;
pattern_num = 5;
break;
case 6:
track_num = 3;
pattern_num = 6;
break;
case 2:
track_num = 3;
pattern_num = 7;
break;
// Track 4
case 47:
track_num = 4;
pattern_num = 0;
break;
case 43:
track_num = 4;
pattern_num = 1;
break;
case 39:
track_num = 4;
pattern_num = 2;
break;
case 35:
track_num = 4;
pattern_num = 3;
break;
case 15:
track_num = 4;
pattern_num = 4;
break;
case 11:
track_num = 4;
pattern_num = 5;
break;
case 7:
track_num = 4;
pattern_num = 6;
break;
case 3:
track_num = 4;
pattern_num = 7;
break;
// Track 5
case 60:
track_num = 5;
pattern_num = 0;
break;
case 56:
track_num = 5;
pattern_num = 1;
break;
case 52:
track_num = 5;
pattern_num = 2;
break;
case 48:
track_num = 5;
pattern_num = 3;
break;
case 28:
track_num = 5;
pattern_num = 4;
break;
case 24:
track_num = 5;
pattern_num = 5;
break;
case 20:
track_num = 5;
pattern_num = 6;
break;
case 16:
track_num = 5;
pattern_num = 7;
break;
// Track 6
case 61:
track_num = 6;
pattern_num = 0;
break;
case 57:
track_num = 6;
pattern_num = 1;
break;
case 53:
track_num = 6;
pattern_num = 2;
break;
case 49:
track_num = 6;
pattern_num = 3;
break;
case 29:
track_num = 6;
pattern_num = 4;
break;
case 25:
track_num = 6;
pattern_num = 5;
break;
case 21:
track_num = 6;
pattern_num = 6;
break;
case 17:
track_num = 6;
pattern_num = 7;
break;
default:
// no change
}
pdata.track_pattern[track_num - 1] = pattern_num; // set new pattern
// Update pattern screen. Clear then set for target track.
for(var i = 0; i < track_ccs[track_num - 1].length; i++) {
mrs[mr_pattern_sn][track_ccs[track_num - 1][i]] = 0;
}
mrs[mr_pattern_sn][mr_cc] = 127;
if(mr_pattern_sn == mr_current_sn) {
mr_screen_refresh();
}
}
function mr_set_velocity(mr_cc) {