int ereaseRow = 0;
boolean doErease = false;
boolean doRec = false;
boolean chooseBank = false;
boolean choosePattern = false;
boolean chooseBPM = false;

void setBeat(int index, int sample) {
   samples[sample][index] = true;
}



void keyPressed() {
  //println(keyCode);
  if(keyCode >= 64 && keyCode <= 88) {  // From A to Z
    //println(key);
    //ereaseRow = keyCode-48;

    if(key == 'b') { // BANK
      chooseBank = true;
      controller[0] = "STOP";
      controller[2] = "CHOOSE...";
    }
    if(key == 'p') { // PLAY/STOP
      controller[0] = controller[0] == "PLAY" ? "STOP" : "PLAY";
      beat=0;
    }
    if(key == 'r') { // REC/OVERDUB
      controller[1] = controller[1] == "UNSET" ? "REC/OVERDUB" : "UNSET";
      doRec = true;
    }
    if(key == 's') { // BPM
      bpmLabel = "CHOOSE...";
      chooseBPM = true;
    }
    if(key == 'o') { // PATTERN
      choosePattern = true;
      controller[0] = "STOP";
      patternLabel = "CHOOSE...";
    }
    if(key == 'x') { // EREASE
      controller[1] = "EREASE";
    }
    
  } else if(keyCode >= 48 && keyCode < 57) { // From 1 to 9
    int code = keyCode-49;
    ereaseRow = controller[1] == "EREASE" ? keyCode-48 : 0;
    doErease = ereaseRow>0;
    
    //&& code < numSounds
    if(code >= 0 && !doErease) {
      
      if(chooseBank) {
        controller[2] = banksLabels[code];
        bank = code+1;
        chooseBank = false;
        setData();
        
      } else if(chooseBPM) {
        bpmLabel = bpmsArray[code]+"";
        bpm = bpmsArray[code];
        chooseBPM = false;
        setData();
        
      } else if(choosePattern) {
        pattern = code;
        patternLabel = "PATTERN" + (code+1);
        choosePattern = false;
        samples = patternsArray[code];
        numSounds = soundNumbersArray[code];
        divider = dividersArray[code];
        bank = banksArray[code];
        bpm = bpmPatArray[code];
        bpmLabel = bpmPatArray[code]+"";
        numTracks = numSounds;
        controller[2] = banksLabels[code];
        setData();
        
      } else if(controller[1] != "EREASE" && controller[1] != "UNSET" && controller[0] != "STOP") {
        setBeat(beat, code);
      }
    }
  }
}