<?php
// Clase Abstract pieza
abstract class Pieza
{
protected $filaActual = 0;
protected $columnaActual = 0;
protected $color = "red";
// Metodos Abstractos a ser implementados en las subclasses
public abstract function MovimientoValido($fila, $columna);
public abstract function FormaPieza();
public function Mover($fila, $columna)
{
// utilizando metodo abstracto que se implementara en las subclasses
if($this->MovimientoValido($fila, $columna))
{
$this->filaActual = $fila;
$this->columnaActual = $columna;
return true;
}
else
{
return false;
}
}
public function Mostrar()
{
// utilizando metodo abstracto que se implementara en las subclasses
echo $this->FormaPieza();
}
}
// Clase PiezaCirculo -> esta solo puede moverse verticamente de a un lugar
class PiezaCirculo extends Pieza
{
//Constructor
public function PiezaCirculo($color, $fila, $columna)
{
$this->color = $color;
$this->filaActual = $fila;
$this->columnaActual = $columna;
}
public function MovimientoValido($fila, $columna)
{
if($this->columnaActual != $columna)
{
return false;
}
if($this->filaActual - 1 != $fila && $this->filaActual + 1 != $fila)
{
return false;
}
return true;
}
public function FormaPieza()
{
return "O";
}
}
// Clase PiezaCruz -> esta solo puede moverse horizontalmente de a un lugar
class PiezaCruz extends Pieza
{
//Constructor
public function PiezaCruz($color, $fila, $columna)
{
$this->color = $color;
$this->filaActual = $fila;
$this->columnaActual = $columna;
}
public function MovimientoValido($fila, $columna)
{
if($this->filaActual != $fila)
{
return false;
}
if($this->columnaActual - 1 != $columna && $this->columnaActual + 1 != $columna)
{
return false;
}
return true;
}
public function FormaPieza()
{
return "X";
}
}
// Tablero que contiene las piezas
class Tablero
{
private $casillas;
// Constructor
public function Tablero()
{
// Array de 3 x 3 con las Piezas
$this->casillas = array
(
array(new PiezaCruz("red", 0, 0), new PiezaCirculo("red", 0, 1), new PiezaCruz("red", 0, 2), new PiezaCirculo("red", 0, 3)),
array(null ,null , null, null),
array(null ,null , null, null),
array(new PiezaCruz("green", 3, 0),new PiezaCirculo("green", 3, 1), new PiezaCruz("green", 3, 2), new PiezaCirculo("green", 3, 3)),
);
$this->DibujarTablero();
}
public function MoverPieza($fila, $columna, $filaDest, $columnaDest)
{
// TODO: Validar fila, columna filaDest, columanDest (que esten dentro dle tablero)
$pieza = $this->casillas[$fila][$columna];
// utilizacion del metodo mover qwue llama al metodo abstractro(polimorfismo)
if($pieza->Mover($filaDest, $columnaDest))
{
// Muevo lña pieza en el tablero
$this->casillas[$fila][$columna] = null;
$this->casillas[$filaDest][$columnaDest] = $pieza;
}
else
{
echo "Movimiento no Permitido para la Pieza\n";
}
$this->DibujarTablero();
}
private function DibujarTablero()
{
echo "-----------------\n";
for ($i = 0; $i < 4; $i++) {
echo" | ";
for ($j = 0; $j < 4; $j++) {
$pieza = $this->casillas[$i][$j];
if($pieza != null)
{
$pieza->Mostrar();
echo" | ";
}
else
{
echo " | ";
}
}
echo "\n";
}
echo "-----------------\n";
}
}
$tablero = new Tablero();
// Movimiento valido (circulo verticalmente)
$tablero->MoverPieza(0, 1, 1, 1);
// Movimiento valido (circulo verticalmente)
$tablero->MoverPieza(3, 3, 2, 3);
// Movimiento valido (cruz horizontalmente)
$tablero->MoverPieza(0, 0, 0, 1);
// Movimiento invalido (cruz verticalmente)
$tablero->MoverPieza(3, 0, 2, 0);
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