//code from: https://www.mrelectrouino.com/2021/02/Arduino%2074hc595%20with%20led%2018%20effects.html

int dataPin = 8;
int latchPin = 9;
int clockPin = 10;
int outputEnable = 5;
#define t1 10
#define t2 100
#define t3  50
//How many of the shift registers - change this

#define number_of_74hc595s 2

//do not touch
#define numOfRegisterPins number_of_74hc595s * 8
boolean registers[numOfRegisterPins];

void setup() {
  pinMode(dataPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(outputEnable, OUTPUT);
  Serial.begin(9600);
  clearLed(0);
  turnOutputsOn();

}

void loop(){
effect_11(1);
}

void loop1() {
strobe(10);
clearLed(0);

strobe2(10);
clearLed(0);

  effect_1(1);
  clearLed(0);

  effect_2(2);
  clearLed(0);

  effect_3(2);
  clearLed(0);

  effect_4(4);
  clearLed(0);

  effect_5(2);
  clearLed(0);

  effect_6(1);
  clearLed(0);

  effect_7(2);
  clearLed(0);

  effect_8(2);
  clearLed(0);

  effect_9(1);
  clearLed(0);

  effect_10(1);
  clearLed(0);

  effect_11(2);
  clearLed(0);

  effect_12(1);
  clearLed(0);

  effect_13(1);
  clearLed(0);

  effect_14(1);
  clearLed(0);

  effect_15(4);
  clearLed(0);

  effect_16(1);
  clearLed(0);

  effect_17(1);
  clearLed(0);

  effect_18(4);
  clearLed(0);

  effect_4(4);

}

//////////////////////////////////////////////////////////// Effect 1
void effect_1(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 4; i++) {
      registersWrite(i, HIGH);
      delay(200);
    }
    clearLed(10);
    for (int i = 4; i < 7; i++) {
      registersWrite(i, HIGH);
      delay(200);
    }
    clearLed(10);
    for (int i = 7; i < 10; i++) {
      registersWrite(i, HIGH);
      delay(200);
    }
    clearLed(10);
    for (int i = 10; i < 13; i++) {
      registersWrite(i, HIGH);
      delay(200);
    }
    clearLed(10);
    for (int i = 13; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(200);
    }
    clearLed(10);
  }
}

void strobe(int effectcount){
for (int i = 1; i <= effectcount; i++) {
for (int i = 0; i < 8; i++) {
      registersWrite(i, HIGH);      
      //registersWrite(i, LOW);
      //delay(5);      
    }
    clearLed(0);
    
for (int i = 15; i >= 8; i--) {
      registersWrite(i, HIGH);
      //delay(20);
      //registersWrite(i, LOW);
      clearLed(0); 
    } 
    
    }  
}

void strobe2(int effectcount){
for (int i = 1; i <= effectcount; i++) {
for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      //delay(1);
      registersWrite(i, LOW);
    }
 
    }  
}

/////////////////////////////////////////////////////////////Effect 2
void effect_2(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(t1);
      registersWrite(i + 1, HIGH);
      delay(t1);
      registersWrite(i + 2, HIGH);
      delay(t1);
      registersWrite(i + 3, HIGH);
      delay(t1);
      registersWrite(i, LOW);
      delay(t1);
      registersWrite(i + 1, LOW);
      delay(t1);
    }
    clearLed(0);
    for (int i = 15; i >= 0; i--) {
      registersWrite(i, HIGH);
      delay(t1);
      registersWrite(i - 1, HIGH);
      delay(t1);
      registersWrite(i - 2, HIGH);
      delay(t1);
      registersWrite(i - 3, HIGH);
      delay(t1);
      registersWrite(i, LOW);
      delay(t1);
      registersWrite(i - 1, LOW);
      delay(t1);
    }
  }
}

////////////////////////////////////////////////////////Effect 3
void effect_3(int effectcount) {
  for (int j = 1; j <= effectcount; j++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(50);
    }

    for (int i = 15; i >= 0; i--) {
      registersWrite(i, LOW);
      delay(50);
    }
  }
}

//////////////////////////////////////////////////////////Effect 4
void effect_4(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    byte led = 0b10101010;
    byte led1 = 0b10101010;
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, MSBFIRST, led);
    shiftOut(dataPin, clockPin, LSBFIRST, led1);
    digitalWrite(latchPin, HIGH);
    delay(100);

    byte led2 = 0b01010101;
    byte led3 = 0b01010101;
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, MSBFIRST, led2);
    shiftOut(dataPin, clockPin, LSBFIRST, led3);
    digitalWrite(latchPin, HIGH);
    delay(100);
  }
}

/////////////////////////////////////////////////////////Effect 5
void effect_5(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    byte led = 0b11111111;
    byte led1 = 0b11111111;
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, MSBFIRST, led);
    shiftOut(dataPin, clockPin, LSBFIRST, led1);
    digitalWrite(latchPin, HIGH);
    turnOutputsOn();
    delay(100);
    turnOutputsOff();
    delay(100);
  }
}

/////////////////////////////////////////////////////////Effect 6
void effect_6(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    int count = 16;
    for (int i = 0; i < 16; i++) {
      clearLed(0);
      registersWrite(i, HIGH);  // chaser 1
      registersWrite(count, HIGH); // chaser 2
      count--;
    }
  }
}

/////////////////////////////////////////////////////////////Effect 7
void effect_7(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    int count2 = 16;
    for (int i = 0; i < 16; i++) {
      clearLed(0);
      registersWrite(i, HIGH);  // chaser 1
      registersWrite(i - 1, HIGH);
      registersWrite(count2, HIGH); // chaser 2
      registersWrite(count2 - 1, HIGH); // chaser 2
      count2--;
    }
  }
}

///////////////////////////////////////////////////////////////Effect 8
void effect_8(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    unsigned int leds = 0B1111111111111111;
    turnOutputsOff();
    updateShiftRegister(leds);
    delay(500);
    for (byte b = 255; b > 0; b--) {
      analogWrite(outputEnable, b);
      delay(8);
    }
  }
}

//////////////////////////////////////////////////////////////Effect 9
void effect_9(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      for (int k = i; k < 16; k++) {
        registersWrite(k, HIGH);
        delay(100);
        registersWrite(k, LOW);
        delay(10);
      }
      registersWrite(i, HIGH);
      delay(20);
    }
  }
}

//////////////////////////////////////////////////////////////////Effect 10
void effect_10(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 15; i >= 0; i--) {
      for (int k = 0; k < i; k++) {
        registersWrite(k, HIGH);
        delay(20);
        registersWrite(k, LOW);
        delay(10);
      }
      registersWrite(i, HIGH);
      delay(20);
    }
  }
}

////////////////////////////////////////////////////////////Effect 11
void effect_11(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(30);
      registersWrite(i + 2, LOW);
      delay(30);
      registersWrite(i - 5, LOW);
    } 
    clearLed(0);
    for (int i = 15; i >= 0; i--) {
      registersWrite(i, HIGH);
      delay(30);
      registersWrite(i - 2, LOW);
      delay(30);
      registersWrite(i + 5, LOW);
    }
  }
}

///////////////////////////////////////////////////////////////Effect 12
void effect_12(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 8; i++) {
      for (int k = i; k < 8; k++) {
        registersWrite(k, HIGH);
        registersWrite(15 - k, HIGH);
        delay(20);
        registersWrite(k, LOW);
        registersWrite(15 - k, LOW);
        delay(20);
      }
      registersWrite(i, HIGH);
      registersWrite(15 - i, HIGH);
    }
  }
}

/////////////////////////////////////////////////////////////////Effect 13
void effect_13(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 7; i >= 0; i--) {
      for (int k = 0; k <= i; k++) {
        registersWrite(k, HIGH);
        registersWrite(15 - k, HIGH);
        delay(20);
        registersWrite(k, LOW);
        registersWrite(15 - k, LOW);
        delay(20);
      }
      registersWrite(i, HIGH);
      registersWrite(15 - i, HIGH);
    }
  }
}

////////////////////////////////////////////////////////////Effect 14
void effect_14(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(t3);
    }
    for (int i = 0; i < 16; i++) {
      registersWrite(i, LOW);
      delay(t3);
    }
    for (int i = 15; i >= 0; i--) {
      registersWrite(i, HIGH);
      delay(t3);
    }
    for (int i = 15; i >= 0; i--) {
      registersWrite(i, LOW);
      delay(t3);
    }
  }
}

/////////////////////////////////////////////////////////////Effect 15
void effect_15(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
    }
    for (int i = 0; i < 16; i++) {
      registersWrite(i, LOW);
    }
  }
}

////////////////////////////////////////////////////////////Effect 16
void effect_16(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      i = i + 1;
      registersWrite(i, HIGH);
      delay(50);
    }
    clearLed(20);
    for (int i = 17; i >= 0; i--) {
      int  j = i * 2;
      registersWrite(j, HIGH);
      delay(50);
    }
    for (int i = 17; i >= 0; i--) {
      int  j = i * 2;
      registersWrite(j, LOW);
      delay(50);
    }
  }
}

////////////////////////////////////////////////////////////Effect 17
void effect_17(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    unsigned int leds = 0B0101010101010101;
    turnOutputsOff();
    updateShiftRegister(leds);
    delay(500);
    analogWrite (outputEnable, 255);
    for ( byte bright = 255; bright > 0; bright -= 5 ){
      analogWrite ( outputEnable, bright );
      delay ( 20 );
    }
    analogWrite ( outputEnable, 0 );
    for ( byte bright = 0; bright < 255; bright += 5 ){
      analogWrite ( outputEnable, bright );
      delay ( 20 );
    }
  }
}

////////////////////////////////////////////////////////////Effect 18
void effect_18(int effectcount) {
  for (int i = 1; i <= effectcount; i++) {
    for (int i = 0; i < 16; i++) {
      registersWrite(i, HIGH);
      delay(10);
    }
    for (int i = 16; i > 3; i--) {
      registersWrite(i, LOW);
    }
  }
}

////////////////////////////////////////////////////////////
void updateShiftRegister(unsigned int leds) {
  byte lowLED  = lowByte(leds);
  byte highLED = highByte(leds);
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, highLED);
  shiftOut(dataPin, clockPin, MSBFIRST, lowLED);
  digitalWrite(latchPin, HIGH);
}

/////////////////////////////////////////////////////////////
void clearLed(int clearSpeed) {
  for (int i = 0; i < 16; i++) {
    registersWrite(i, LOW);
    delay(clearSpeed);
  }
}

////////////////////////////////////////////////////////////
void turnOutputsOn() {
  digitalWrite(outputEnable, LOW);
}

void turnOutputsOff() {
  digitalWrite(outputEnable, HIGH);
}

////////////////////////////////////////////////////////////
void registersWrite(int index, int value) {
  registers[index] = value;
  digitalWrite(latchPin, LOW);
  turnOutputsOn();
  for (int i = numOfRegisterPins - 1; i >=  0; i--) {
    digitalWrite(clockPin, LOW);
    int val = registers[i];
    digitalWrite(dataPin, val);
    digitalWrite(clockPin, HIGH);
  }
  digitalWrite(latchPin, HIGH);
  delay(5);
}