int32_t pattern[128] = {};
int32_t counter = 0;
int ntrig = 0;
int rtrig = 0;
int32_t bindex;
int32_t pindex;
int32_t outval;
int init = 1;

/////////////////////////////////////////////////////////////////////////
// Seeded Random Number Generator ///////////////////////////////////////
// http://blog.embedded-office.com/en/blog-artikel/items/random-1.html //
// (cryptographically rubbish, but should be fine for our porpoises) ////
/////////////////////////////////////////////////////////////////////////

int32_t a = 5;
int32_t b = 12345;
int32_t m = 511;
int32_t rstate = 1;

int32_t updatestate() {
  rstate = ((rstate * a + b) % m) - 255;
  return rstate;
}

//////////////////////////
// Update Pattern Array //
//////////////////////////

void newpattern(int32_t a, int32_t b) {
  rstate = a * 64 + b;
  for (int i = 0; i < 128; i++) {
    pattern[i] = updatestate();
  }
}

///////////////////////////////
// Loop Running For 1st Time //
///////////////////////////////

if (init) {
  newpattern(param_bank, param_pattern);
  init = 0;
}

/////////////////////////////
// Reset Input Rising Edge //
/////////////////////////////

if ((inlet_r > 0) && !rtrig) {
  rtrig = 1;
  counter = 0;
} else if (!(inlet_r > 0)) {
  rtrig = 0;
}

///////////////////////////////
// Trigger Input Rising Edge //
///////////////////////////////

if ((inlet_trig > 0) && !ntrig) {
  // Check for changes to parameters
  // and regenerate array if params changed
  if ((param_bank != bindex) || (param_pattern != pindex)) {
    newpattern(param_bank, param_pattern);
    bindex = param_bank;
    pindex = param_pattern;
  }
  // Set output value until next trigger
  outval = pattern[counter % param_length];
  counter++;
  ntrig = 1;
} else if (!(inlet_trig > 0)) {
  ntrig = 0;
}

outlet_out = outval << 19;