#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int pot=0;
int lastpot=20;
int seed=0;
int counter=40;
int speed=40;
int scrollcounter=0;
bool currentloop=true;
uint8_t arrow[8] = {
  0b00100,
  0b01010,
  0b10001,
  0b10001,
  0b10001,
  0b11111,
  0b00000,
  0b00000,
};
uint8_t darkarrow[8] = {
  0b11011,
  0b10101,
  0b01110,
  0b01110,
  0b01110,
  0b00000,
  0b11111,
  0b11111,
};

void setup() {
  lcd.begin(16,2);
  lcd.createChar(3,arrow);
  lcd.createChar(2,darkarrow);
  pinMode(7,INPUT_PULLUP);
  pinMode(6,OUTPUT);
  pinMode(8,OUTPUT);
  Serial.begin(115200);
}

void loop() {
  lcd.clear();
  lcd.print(" game 1  game 2 ");
  for(int i=0;i<16;i++){
    lcd.setCursor(i,1);
    if(i==7||i==8){
      continue;
    }
    lcd.write(255);
  }
  while(digitalRead(7)==HIGH){
    lcd.setCursor(lastpot,1);
    if(lastpot==7||lastpot==8){
      lcd.print(" ");
    }
    else{
      lcd.write(255);
    }
    pot=map(analogRead(A0),0,1023,0,15);
    lastpot=pot;
    lcd.setCursor(pot,1);
    if(pot<7||pot>8){
      lcd.print("\x02");
    }
    else{
      lcd.print("\x03");
    }
    delay(100);
  }
  if(pot<7){
    game1();
  }
  else if(pot>8){
    game2();
  }
}

int flashGreen() {
  digitalWrite(8, HIGH);
  delay(400);
  digitalWrite(8, LOW);
}

int game1() {
  flashGreen();
  lcd.clear();
  seed=0;
  speed=40;
  counter=50;
  while(1){
    if(counter>speed){
      if(bitRead(seed,pot)==1){ //check if ^ is under #
        digitalWrite(6,HIGH);
        delay(500);
        digitalWrite(6,LOW);
        return;
      }
      for(int i=0;i<16;i++){ //clear top row
        lcd.setCursor(i,0);
        lcd.print(" ");
      }
      seed=random(0,65535); //generate and print random # top row
      for(int i=15;i>=0;i--){ 
        lcd.setCursor(i,0);
        if(bitRead(seed,i)==1){
          lcd.print("#");
        }
      }
      counter=0;
      if(speed>10){
        speed=speed-4;
      }
    }
    else{
      counter++;
    }
    lcd.setCursor(lastpot,1); //draw ^ at current position
    lcd.print(" ");
    pot=map(analogRead(A0),0,1023,0,15);
    lastpot=pot;
    lcd.setCursor(pot,1);
    lcd.print("\x03");
    delay(100);
  }
}
int game2() {
  flashGreen();
  counter=0;
  int obst[25];
  int row=0;
  while(1){
    if(currentloop==true){ //make and draw blocks
      seed=random(1,9);
      for(int i=0;i<seed;i++){ //generate random block length
        obst[1+i]=1;
      }
      row=random(0,2);
      for(int i=0;i<25;i++){
        Serial.println(String(obst[i]));
      }
      Serial.println("break");
      currentloop=false;
    }
    if(counter>7){
      lcd.clear();
      for(int i=0;i<16;i++){ //draw blocks
        lcd.setCursor(i,row);
        if(bitRead(obst[i+scrollcounter],0)==1){
          lcd.write(255);
        }
      }
      counter=0;
      scrollcounter++;
    }
    if(scrollcounter>seed+17){
      currentloop=true;
      scrollcounter=0;
    }
    counter++;
    lcd.setCursor(lastpot,1); //draw ^ at current position
    lcd.print(" ");
    pot=map(analogRead(A0),0,1023,0,15);
    lastpot=pot;
    lcd.setCursor(pot,1);
    lcd.print("\x03");
    delay(100);
  }
}