// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
// defino los nuevo caracter o imagenes
byte letra1[8] = { B01110, B10111, B11111, B11111, B10000, B11111, B11111, B01110 }; // PAC
byte letra2[8] = { B01111, B10110, B11100, B11000, B11000, B11100, B11110, B01111 }; 

byte letra8[8] = { B01110, B11101, B11111, B11111, B00001, B11111, B11111, B01110 }; // PAC IZQ
byte letra9[8] = { B11110, B01101, B00111, B00011, B00011, B00111, B01111, B11110 }; 

byte letra3[8] = { B01110, B11111, B10101, B11111, B11111, B11111, B10101, B10101 }; //fantasma

byte letra0[8] = { B00000, B00000, B00000, B00000, B00000, B00000, B00000, B00000 }; // blanco
byte letra4[8] = { B01111, B10110, B11100, B11000, B11000, B11100, B11110, B01111 }; // atrapado
byte letra5[8] = { B01110, B10101, B11011, B11111, B01110, B01110, B00000, B00000 }; // Muerto
byte letra6[8] = { B00111, B00110, B00110, B00110, B00110, B00110, B00110, B00111 }; // Der
byte letra7[8] = { B01110, B10111, B11111, B11111, B10000, B11111, B11111, B01110 }; // Izq

int x=0;
int y=0;
int arriba=6;
int abajo=7;
int derecha=8;
int izquierda=9;
int der1=2;
int der2=7;
int posx=19;
int posy=3;
int x_a=0;
int y_a=0;

void setup() {
  lcd.begin(20, 4);
  lcd.createChar(1, letra1);      // asigna los nuevos caracteres por numeros
  lcd.createChar(2, letra2);
  lcd.createChar(3, letra3);
  lcd.createChar(0, letra0);
  lcd.createChar(4, letra4);
  lcd.createChar(5, letra5);
  lcd.createChar(6, letra6);
  lcd.createChar(7, letra7);
  lcd.createChar(8, letra8);
  lcd.createChar(9, letra9);
  
  pinMode(arriba,INPUT);
  pinMode(abajo,INPUT);
  pinMode(derecha,INPUT);
  pinMode(izquierda,INPUT);


 
}

void loop() {
  //lcd.setCursor(0,0);// Se posiciona en la primera linea
 // lcd.print("Hello World!!!!");
 // lcd.setCursor(0,1);// Se posiciona en la segunda linea
 // lcd.print("Hola mundo!!!!");

 //posx = random(0,19);
 //posy = random(0,3);

 lcd.setCursor(posx,posy);
  lcd.write(byte(3));
  
  lcd.setCursor(x,y);  // imagen PAC 1
  lcd.write(byte(der1)); 
  delay(100);

  lcd.setCursor(x,y);  // imagen PAC 2
  lcd.write(byte(der2));
  delay(100);
//*****************************************
if (digitalRead(derecha)==HIGH){

x_a = random(-2,2);
//y_a = random(-2,2);

posx=posx+x_a;
//posy=posy+y_a;

if(posx>19){
  posx=19;
}
if(posx<0){
  posx=0;;
}
  if(posy<0){
  posy=0;
}
 if(posy>3){
  posy=3;
}



  der1=2;
  der2=7;
lcd.clear();
x++;
if(x>=20){
  x=0;
}
}
//********************************************
if (digitalRead(izquierda)==HIGH){

x_a = random(-2,2);
//y_a = random(-2,2);

posx=posx+x_a;
//posy=posy+y_a;

if(posx>19){
  posx=19;
}
if(posx<0){
  posx=0;;
}
  if(posy<0){
  posy=0;
}
 if(posy>3){
  posy=3;
}

  der1=8;
  der2=9;
lcd.clear();
x--;
if(x<=-1){
  x=19;
}
}
//**********************************************
if (digitalRead(arriba)==HIGH){

posx = random(0,19);
posy = random(0,3);

lcd.clear();
y--;
if(y<=-1){
  y=3;
}
}
//*****************************************
if (digitalRead(abajo)==HIGH){

posx = random(0,19);
posy = random(0,3);

lcd.clear();
y++;
if(y>=4){
  y=0;
}
}
//******************************************
}