59 lines
1.2 KiB
Java
59 lines
1.2 KiB
Java
// interfaces/Games.java
|
|
// ©2015 MindView LLC: see Copyright.txt
|
|
// A Game framework using Factory Methods.
|
|
import static com.mindviewinc.util.Print.*;
|
|
|
|
interface Game { boolean move(); }
|
|
interface GameFactory { Game getGame(); }
|
|
|
|
class Checkers implements Game {
|
|
private int moves = 0;
|
|
private static final int MOVES = 3;
|
|
@Override
|
|
public boolean move() {
|
|
print("Checkers move " + moves);
|
|
return ++moves != MOVES;
|
|
}
|
|
}
|
|
|
|
class CheckersFactory implements GameFactory {
|
|
@Override
|
|
public Game getGame() { return new Checkers(); }
|
|
}
|
|
|
|
class Chess implements Game {
|
|
private int moves = 0;
|
|
private static final int MOVES = 4;
|
|
@Override
|
|
public boolean move() {
|
|
print("Chess move " + moves);
|
|
return ++moves != MOVES;
|
|
}
|
|
}
|
|
|
|
class ChessFactory implements GameFactory {
|
|
@Override
|
|
public Game getGame() { return new Chess(); }
|
|
}
|
|
|
|
public class Games {
|
|
public static void playGame(GameFactory factory) {
|
|
Game s = factory.getGame();
|
|
while(s.move())
|
|
;
|
|
}
|
|
public static void main(String[] args) {
|
|
playGame(new CheckersFactory());
|
|
playGame(new ChessFactory());
|
|
}
|
|
}
|
|
/* Output:
|
|
Checkers move 0
|
|
Checkers move 1
|
|
Checkers move 2
|
|
Chess move 0
|
|
Chess move 1
|
|
Chess move 2
|
|
Chess move 3
|
|
*/
|