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konsumer/Protracker

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index.js

Summary

Maintainability
F
3 wks
Test Coverage

Function mix has a Cognitive Complexity of 143 (exceeds 5 allowed). Consider refactoring.
Open

Protracker.prototype.mix = function(ape) {
  var f;
  var p, pp, n, nn;
  var mod;
  if (ape.srcElement) {
Severity: Minor
Found in index.js - About 2 days to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

File index.js has 785 lines of code (exceeds 250 allowed). Consider refactoring.
Open

/*
  amiga protracker module player for web audio api
  (c) 2012-2014 firehawk/tda  (firehawk@haxor.fi)
  
  originally hacked together in a weekend, so please excuse
Severity: Major
Found in index.js - About 1 day to fix

    Function parse has a Cognitive Complexity of 47 (exceeds 5 allowed). Consider refactoring.
    Open

    Protracker.prototype.parse = function()
{
  var i,j,c;
  
  if (!this.buffer){
    Severity: Minor
    Found in index.js - About 7 hrs to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Function mix has 112 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    Protracker.prototype.mix = function(ape) {
  var f;
  var p, pp, n, nn;
  var mod;
  if (ape.srcElement) {
    Severity: Major
    Found in index.js - About 4 hrs to fix

      Function advance has a Cognitive Complexity of 28 (exceeds 5 allowed). Consider refactoring.
      Open

      Protracker.prototype.advance=function(mod) {
  var spd=(((mod.samplerate*60)/mod.bpm)/4)/6;

  // advance player
  if (mod.offset>spd) { mod.tick++; mod.offset=0; mod.flags|=1; }
      Severity: Minor
      Found in index.js - About 4 hrs to fix

      Cognitive Complexity

      Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

      A method's cognitive complexity is based on a few simple rules:

      • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
      • Code is considered more complex for each "break in the linear flow of the code"
      • Code is considered more complex when "flow breaking structures are nested"

      Further reading

      Function parse has 100 lines of code (exceeds 25 allowed). Consider refactoring.
      Open

      Protracker.prototype.parse = function()
{
  var i,j,c;
  
  if (!this.buffer){
      Severity: Major
      Found in index.js - About 4 hrs to fix

        Function Protracker has 64 lines of code (exceeds 25 allowed). Consider refactoring.
        Open

        function Protracker()
{
  var i, t;

  this.initialize();
        Severity: Major
        Found in index.js - About 2 hrs to fix

          Function advance has 43 lines of code (exceeds 25 allowed). Consider refactoring.
          Open

          Protracker.prototype.advance=function(mod) {
  var spd=(((mod.samplerate*60)/mod.bpm)/4)/6;

  // advance player
  if (mod.offset>spd) { mod.tick++; mod.offset=0; mod.flags|=1; }
          Severity: Minor
          Found in index.js - About 1 hr to fix

            Function initialize has 38 lines of code (exceeds 25 allowed). Consider refactoring.
            Open

            Protracker.prototype.initialize = function()
{
  this.syncqueue=[];

  this.tick=0;
            Severity: Minor
            Found in index.js - About 1 hr to fix

              Function Protracker has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.
              Open

              function Protracker()
{
  var i, t;

  this.initialize();
              Severity: Minor
              Found in index.js - About 1 hr to fix

              Cognitive Complexity

              Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

              A method's cognitive complexity is based on a few simple rules:

              • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
              • Code is considered more complex for each "break in the linear flow of the code"
              • Code is considered more complex when "flow breaking structures are nested"

              Further reading

              Function createContext has 28 lines of code (exceeds 25 allowed). Consider refactoring.
              Open

              Protracker.prototype.createContext = function()
{
  if ( typeof AudioContext !== 'undefined') {
    this.context = new AudioContext();
  } else {
              Severity: Minor
              Found in index.js - About 1 hr to fix

                Function clearsong has 28 lines of code (exceeds 25 allowed). Consider refactoring.
                Open

                Protracker.prototype.clearsong = function()
{  
  this.title="";
  this.signature="";
  this.songlen=1;
                Severity: Minor
                Found in index.js - About 1 hr to fix

                  Function effect_t0_ed has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
                  Open

                  Protracker.prototype.effect_t0_ed=function(mod, ch) { // ed delay sample
  if (mod.tick==(mod.channel[ch].data&0x0f)) {
    // start note
    var p=mod.patterntable[mod.position];
    var pp=mod.row*4*mod.channels + ch*4;
                  Severity: Minor
                  Found in index.js - About 45 mins to fix

                  Cognitive Complexity

                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                  A method's cognitive complexity is based on a few simple rules:

                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                  • Code is considered more complex for each "break in the linear flow of the code"
                  • Code is considered more complex when "flow breaking structures are nested"

                  Further reading

                  Avoid deeply nested control flow statements.
                  Open

                          if (n==this.baseperiodtable[np]) this.note[i][j*this.channels+c]=np;
                  Severity: Major
                  Found in index.js - About 45 mins to fix

                    Avoid deeply nested control flow statements.
                    Open

                              if (mod.flags&16) { // pattern jump/break?
            //console.log("break to pattern " + mod.patternjump + " row "+mod.breakrow);
            mod.position=mod.patternjump;
            mod.row=mod.breakrow;
            mod.patternjump=0;
                    Severity: Major
                    Found in index.js - About 45 mins to fix

                      Avoid deeply nested control flow statements.
                      Open

                                if (!mod.tick) {
            // process only on tick 0
            mod.effects_t0[mod.channel[ch].command](mod, ch);
          } else {
            mod.effects_t1[mod.channel[ch].command](mod, ch);
                      Severity: Major
                      Found in index.js - About 45 mins to fix

                        Avoid deeply nested control flow statements.
                        Open

                                  if (!(mod.channel[ch].command==0x0e && (mod.channel[ch].data&0xf0)==0xd0)) {
            n=(mod.pattern[p][pp]&0x0f)<<8 | mod.pattern[p][pp+1];
            if (n) {
              // noteon, except if command=3 (porta to note)
              if ((mod.channel[ch].command != 0x03) && (mod.channel[ch].command != 0x05)) {
                        Severity: Major
                        Found in index.js - About 45 mins to fix

                          Avoid deeply nested control flow statements.
                          Open

                                    if (mod.sample[mod.channel[ch].sample].loopstart || mod.sample[mod.channel[ch].sample].looplength) {
            if (mod.channel[ch].samplepos >= (mod.sample[mod.channel[ch].sample].loopstart+mod.sample[mod.channel[ch].sample].looplength)) {
              mod.channel[ch].samplepos-=mod.sample[mod.channel[ch].sample].looplength;
            }
          } else {
                          Severity: Major
                          Found in index.js - About 45 mins to fix

                            Avoid deeply nested control flow statements.
                            Open

                                      if (mod.sample[mod.channel[ch].sample].length > mod.channel[ch].samplepos)
            f=(1.0/mod.channels) *
              (mod.sample[mod.channel[ch].sample].data[Math.floor(mod.channel[ch].samplepos)]*mod.channel[ch].volume)/64.0;
                            Severity: Major
                            Found in index.js - About 45 mins to fix

                              Avoid deeply nested control flow statements.
                              Open

                                        for(var np=0; np<mod.baseperiodtable.length; np++)
            if (mod.baseperiodtable[np]>=mod.channel[ch].period) mod.channel[ch].note=np;
                              Severity: Major
                              Found in index.js - About 45 mins to fix

                                Avoid deeply nested control flow statements.
                                Open

                                          if (mod.channel[ch].period>=120)
            mod.channel[ch].semitone=mod.baseperiodtable[mod.channel[ch].note]-mod.baseperiodtable[mod.channel[ch].note+1];
                                Severity: Major
                                Found in index.js - About 45 mins to fix

                                  Function setamigamodel has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.setamigamodel = function(amiga)
{
  if (amiga=="600" || amiga=="1200" || amiga=="4000") {
    this.amiga500=false;
    if (this.filterNode) this.filterNode.frequency.value=28867;
                                  Severity: Minor
                                  Found in index.js - About 35 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Function effect_t0_e6 has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_e6=function(mod, ch) { // e6 loop pattern
  if (mod.channel[ch].data&0x0f) {
    if (mod.loopcount) {
      mod.loopcount--;
    } else {
                                  Severity: Minor
                                  Found in index.js - About 35 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Function effect_t1_0 has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_0=function(mod, ch) { // 0 arpeggio
  if (mod.channel[ch].data) {
    var apn=mod.channel[ch].note;
    if ((mod.tick%3)==1) apn+=mod.channel[ch].arpeggio>>4;
    if ((mod.tick%3)==2) apn+=mod.channel[ch].arpeggio&0x0f;
                                  Severity: Minor
                                  Found in index.js - About 35 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Function createContext has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.createContext = function()
{
  if ( typeof AudioContext !== 'undefined') {
    this.context = new AudioContext();
  } else {
                                  Severity: Minor
                                  Found in index.js - About 35 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Function effect_t1_3 has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_3=function(mod, ch) { // 3 slide to note
  if (mod.channel[ch].period < mod.channel[ch].slideto) {
    mod.channel[ch].period+=mod.channel[ch].slidetospeed;
    if (mod.channel[ch].period > mod.channel[ch].slideto)
      mod.channel[ch].period=mod.channel[ch].slideto;
                                  Severity: Minor
                                  Found in index.js - About 25 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Function effect_t1_a has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_a=function(mod, ch) { // a volume slide
  if (!(mod.channel[ch].data&0x0f)) {
    // y is zero, slide up
    mod.channel[ch].volume+=(mod.channel[ch].data>>4);
    if (mod.channel[ch].volume>64) mod.channel[ch].volume=64;
                                  Severity: Minor
                                  Found in index.js - About 25 mins to fix

                                  Cognitive Complexity

                                  Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

                                  A method's cognitive complexity is based on a few simple rules:

                                  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
                                  • Code is considered more complex for each "break in the linear flow of the code"
                                  • Code is considered more complex when "flow breaking structures are nested"

                                  Further reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    for(i=0;i<this.samples;i++) {
    var st=20+i*30;
    j=0;
    while(this.buffer[st+j] && j<22) { 
      this.sample[i].name+=
                                  Severity: Major
                                  Found in index.js and 1 other location - About 3 days to fix
                                  formats/mod.js on lines 12..33

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 554.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 4 locations. Consider refactoring.
                                  Open

                                    for(i=0;i<this.patterns;i++) {
    this.pattern[i]=new Uint8Array(patlen);
    this.note[i]=new Uint8Array(this.channels*64);
    for(j=0;j<patlen;j++) this.pattern[i][j]=this.buffer[1084+i*patlen+j];
    for(j=0;j<64;j++) for(c=0;c<this.channels;c++) {
                                  Severity: Major
                                  Found in index.js and 3 other locations - About 2 days to fix
                                  formats/it.js on lines 111..121
                                  formats/mod.js on lines 46..56
                                  formats/xm.js on lines 123..133

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 364.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 4 locations. Consider refactoring.
                                  Open

                                    for(i=0;i<this.samples;i++) {
    this.sample[i].data=new Float32Array(this.sample[i].length);
    for(j=0;j<this.sample[i].length;j++) {
      var q=this.buffer[sst+j];
      if (q<128) {
                                  Severity: Major
                                  Found in index.js and 3 other locations - About 1 day to fix
                                  formats/it.js on lines 127..140
                                  formats/mod.js on lines 59..72
                                  formats/xm.js on lines 139..152

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 199.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_1=function(mod, ch) { // 1 slide up
  mod.channel[ch].period-=mod.channel[ch].slidespeed;
  if (mod.channel[ch].period<113) mod.channel[ch].period=113;
  mod.channel[ch].flags|=3; // recalc speed
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 4 hrs to fix
                                  index.js on lines 928..932

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 115.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_2=function(mod, ch) { // 2 slide down
  mod.channel[ch].period+=mod.channel[ch].slidespeed;
  if (mod.channel[ch].period>856) mod.channel[ch].period=856;
  mod.channel[ch].flags|=3; // recalc speed                
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 4 hrs to fix
                                  index.js on lines 923..927

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 115.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_eb=function(mod, ch) { // eb fine volslide down
  mod.channel[ch].volume-=mod.channel[ch].data&0x0f;
  if (mod.channel[ch].volume < 0) mod.channel[ch].volume=0;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 3 hrs to fix
                                  index.js on lines 835..838
                                  index.js on lines 870..873

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_ea=function(mod, ch) { // ea fine volslide up
  mod.channel[ch].volume+=mod.channel[ch].data&0x0f;
  if (mod.channel[ch].volume > 64) mod.channel[ch].volume=64;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 3 hrs to fix
                                  index.js on lines 835..838
                                  index.js on lines 874..877

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    mod.channel[ch].voiceperiod+=
    (mod.channel[ch].vibratodepth/32)*mod.channel[ch].semitone*(mod.vibratotable[mod.channel[ch].vibratowave&3][mod.channel[ch].vibratopos]/127);
                                  Severity: Major
                                  Found in index.js and 1 other location - About 3 hrs to fix
                                  index.js on lines 947..948

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    mod.channel[ch].voiceperiod+=
    (mod.channel[ch].vibratodepth/32)*mod.channel[ch].semitone*(mod.vibratotable[mod.channel[ch].vibratowave&3][mod.channel[ch].vibratopos]/127);
                                  Severity: Major
                                  Found in index.js and 1 other location - About 3 hrs to fix
                                  index.js on lines 777..778

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_e1=function(mod, ch) { // e1 fine slide up
  mod.channel[ch].period-=mod.channel[ch].data&0x0f;
  if (mod.channel[ch].period < 113) mod.channel[ch].period=113;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 3 hrs to fix
                                  index.js on lines 870..873
                                  index.js on lines 874..877

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    if (mod.channel[ch].period > mod.channel[ch].slideto) {
    mod.channel[ch].period-=mod.channel[ch].slidetospeed;
    if (mod.channel[ch].period<mod.channel[ch].slideto)
      mod.channel[ch].period=mod.channel[ch].slideto;
  }
                                  Severity: Major
                                  Found in index.js and 1 other location - About 3 hrs to fix
                                  index.js on lines 934..938

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    if (mod.channel[ch].period < mod.channel[ch].slideto) {
    mod.channel[ch].period+=mod.channel[ch].slidetospeed;
    if (mod.channel[ch].period > mod.channel[ch].slideto)
      mod.channel[ch].period=mod.channel[ch].slideto;
  }
                                  Severity: Major
                                  Found in index.js and 1 other location - About 3 hrs to fix
                                  index.js on lines 939..943

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 98.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                    this.effects_t1 = new Array(
    this.effect_t1_0, this.effect_t1_1, this.effect_t1_2, this.effect_t1_3, this.effect_t1_4, this.effect_t1_5, this.effect_t1_6, this.effect_t1_7,
    this.effect_t1_8, this.effect_t1_9, this.effect_t1_a, this.effect_t1_b, this.effect_t1_c, this.effect_t1_d, this.effect_t1_e, this.effect_t1_f);
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 2 hrs to fix
                                  index.js on lines 131..133
                                  index.js on lines 137..139

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 94.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                    this.effects_t0_e = new Array(
    this.effect_t0_e0, this.effect_t0_e1, this.effect_t0_e2, this.effect_t0_e3, this.effect_t0_e4, this.effect_t0_e5, this.effect_t0_e6, this.effect_t0_e7,
    this.effect_t0_e8, this.effect_t0_e9, this.effect_t0_ea, this.effect_t0_eb, this.effect_t0_ec, this.effect_t0_ed, this.effect_t0_ee, this.effect_t0_ef);
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 2 hrs to fix
                                  index.js on lines 134..136
                                  index.js on lines 137..139

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 94.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                    this.effects_t1_e = new Array(
    this.effect_t1_e0, this.effect_t1_e1, this.effect_t1_e2, this.effect_t1_e3, this.effect_t1_e4, this.effect_t1_e5, this.effect_t1_e6, this.effect_t1_e7,
    this.effect_t1_e8, this.effect_t1_e9, this.effect_t1_ea, this.effect_t1_eb, this.effect_t1_ec, this.effect_t1_ed, this.effect_t1_ee, this.effect_t1_ef);
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 2 hrs to fix
                                  index.js on lines 131..133
                                  index.js on lines 134..136

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 94.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Identical blocks of code found in 4 locations. Consider refactoring.
                                  Open

                                    for(i=0;i<128;i++) {
    this.patterntable[i]=this.buffer[952+i];
    if (this.patterntable[i] > this.patterns) this.patterns=this.patterntable[i];
  }
                                  Severity: Major
                                  Found in index.js and 3 other locations - About 2 hrs to fix
                                  formats/it.js on lines 101..104
                                  formats/mod.js on lines 37..40
                                  formats/xm.js on lines 113..116

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 87.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    if (!(mod.channel[ch].data&0xf0)) {
    // x is zero, slide down
    mod.channel[ch].volume-=(mod.channel[ch].data&0x0f);
    if (mod.channel[ch].volume<0) mod.channel[ch].volume=0;                  
  }
                                  Severity: Major
                                  Found in index.js and 1 other location - About 2 hrs to fix
                                  index.js on lines 967..971

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 80.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                    if (!(mod.channel[ch].data&0x0f)) {
    // y is zero, slide up
    mod.channel[ch].volume+=(mod.channel[ch].data>>4);
    if (mod.channel[ch].volume>64) mod.channel[ch].volume=64;
  }
                                  Severity: Major
                                  Found in index.js and 1 other location - About 2 hrs to fix
                                  index.js on lines 972..976

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 80.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_1=function(mod, ch) { // 1 slide up
  if (mod.channel[ch].data) mod.channel[ch].slidespeed=mod.channel[ch].data;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 1 hr to fix
                                  index.js on lines 766..768
                                  index.js on lines 769..771

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 71.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_2=function(mod, ch) { // 2 slide down
  if (mod.channel[ch].data) mod.channel[ch].slidespeed=mod.channel[ch].data;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 1 hr to fix
                                  index.js on lines 763..765
                                  index.js on lines 769..771

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 71.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 3 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_3=function(mod, ch) { // 3 slide to note
  if (mod.channel[ch].data) mod.channel[ch].slidetospeed=mod.channel[ch].data;
};
                                  Severity: Major
                                  Found in index.js and 2 other locations - About 1 hr to fix
                                  index.js on lines 763..765
                                  index.js on lines 766..768

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 71.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_e=function(mod, ch) { // e
  var i=(mod.channel[ch].data&0xf0)>>4;
  mod.effects_t1_e[i](mod, ch);
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 808..811

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 67.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_e=function(mod, ch) { // e
  var i=(mod.channel[ch].data&0xf0)>>4;
  mod.effects_t0_e[i](mod, ch);
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 984..987

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 67.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                        } else {
        outp[0]=outp[0]*0.65 + outp[1]*0.35;
        outp[1]=outp[1]*0.65 + t*0.35;
      }
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 740..743

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 61.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                        if (mod.separation==2) {
        outp[0]=outp[0]*0.5 + outp[1]*0.5;
        outp[1]=outp[1]*0.5 + t*0.5;
      } else {
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 743..746

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 61.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_e4=function(mod, ch) { // e4 set vibrato waveform
  mod.channel[ch].vibratowave=mod.channel[ch].data&0x07;
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 790..792

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 59.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_9=function(mod, ch) { // 9 set sample offset
  mod.channel[ch].samplepos=mod.channel[ch].data*256;
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 846..848

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 59.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_8=function(mod, ch) { // 8 unused, used for syncing
  mod.syncqueue.unshift(mod.channel[ch].data&0x0f);
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 865..867

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 55.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_e8=function(mod, ch) { // e8, use for syncing
  mod.syncqueue.unshift(mod.channel[ch].data&0x0f);
};
                                  Severity: Major
                                  Found in index.js and 1 other location - About 1 hr to fix
                                  index.js on lines 787..789

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 55.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_5=function(mod, ch) { // 5 volslide + slide to note
  mod.effect_t1_3(mod, ch); // slide to note
  mod.effect_t1_a(mod, ch); // volslide
};
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 55 mins to fix
                                  index.js on lines 955..958

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 54.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_0=function(mod, ch) { // 0 arpeggio
  mod.channel[ch].arpeggio=mod.channel[ch].data;
};
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 55 mins to fix
                                  index.js on lines 800..802

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 54.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t0_c=function(mod, ch) { // c set volume
  mod.channel[ch].volume=mod.channel[ch].data;
};
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 55 mins to fix
                                  index.js on lines 760..762

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 54.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                  Protracker.prototype.effect_t1_6=function(mod, ch) { // 6 volslide + vibrato
  mod.effect_t1_4(mod, ch); // vibrato
  mod.effect_t1_a(mod, ch); // volslide
};
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 55 mins to fix
                                  index.js on lines 951..954

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 54.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                      n=mod.pattern[p][pp+0]&0xf0 | mod.pattern[p][pp+2]>>4;
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 50 mins to fix
                                  index.js on lines 660..660

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 51.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                              nn=mod.pattern[p][pp+0]&0xf0 | mod.pattern[p][pp+2]>>4;
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 50 mins to fix
                                  index.js on lines 894..894

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 51.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                      n=(mod.pattern[p][pp]&0x0f)<<8 | mod.pattern[p][pp+1];
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 35 mins to fix
                                  index.js on lines 647..647

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 47.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

                                  Similar blocks of code found in 2 locations. Consider refactoring.
                                  Open

                                              n=(mod.pattern[p][pp]&0x0f)<<8 | mod.pattern[p][pp+1];
                                  Severity: Minor
                                  Found in index.js and 1 other location - About 35 mins to fix
                                  index.js on lines 885..885

                                  Duplicated Code

                                  Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

                                  Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

                                  When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

                                  Tuning

                                  This issue has a mass of 47.

                                  We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

                                  The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

                                  If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

                                  See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

                                  Refactorings

                                  Further Reading

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