#include <LiquidCrystal.h>
#include <Streaming.h>


LiquidCrystal lcd( 18, 11, 19, 20, 21, 22, 23 );

int status = 15;
int position = 0;
int mod = 0;
unsigned long prev = 0;
int score = 0;
int astx = 16;
int asty = 0;
void setup( )
{
  pinMode( status, OUTPUT ); 
  digitalWrite( status, HIGH );
  Serial.begin( 9600 );
  randomSeed( 4 ); //fair dice roll
  asty = random( 2 );
}

void loop( ) {  
  int x;
  
  x = digitalRead( 8 );
  if( x == 0 ) mod = 1;
  if ( millis( ) - prev > 200 ) {
    randomSeed( millis( ) );
    astx--;
    if( astx<=0 ) {
       if( asty==position ) {
         gameover( ); 
       } else {
         score++;
         astx = 16;
         asty = random( 2 );
       }
       
       
    }
    
    if( astx>3 && random( 2 ) == 1) asty = random( 2 );
    
    if( mod == 1 ) {
      mod = 0;
      position = position==1?0:1; 
    }
    lcd.clear( );
    
    prev = millis( );  
    position += mod;
    
    lcd.setCursor( astx, asty );
    lcd.print( "*" );
    lcd.setCursor( 0, position );
    lcd.print( "> " );
  }
  delay( 100 );
}

void gameover( ) {
  lcd.setCursor( 0, 0 );
  lcd.print( "GAME OVER!" );
  lcd.setCursor( 0, 1 );
  lcd.print( "Score: " );
  lcd.print( score );
  
  score = 0;
  astx = 16;
  asty = random( 2 );
  delay( 5000 );
}