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Common.java
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Common.java
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import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
class AddressPort {
private String address;
private int port;
public AddressPort(String address, int port) {
this.address = address;
this.port = port;
}
@Override
public boolean equals(Object obj) {
AddressPort tmp = (AddressPort) obj;
return address.equals(tmp.address) && (port == tmp.port);
}
public String getAddress() {
return address;
}
public int getPort() {
return port;
}
@Override
public String toString() {
return address + ":" + port;
}
}
class User {
private String name;
private String address;
private int port;
public User() {}
public User(String name, String address, int port) {
this.name = name;
this.address = address;
this.port = port;
}
public String getName() { return name; }
public void setName(String string) { name = string; }
public String getAddress() { return address; }
public void setAddress(String string) { address = string; }
public int getPort() { return port; }
public void setPort(int number) { port = number; }
@Override
public boolean equals(Object obj) {
User user = (User) obj;
return this.address.equals(user.getAddress()) && this.port == user.getPort();
}
@Override
public String toString() {
return Json.toJson(this);
}
}
class Game {
private String name; // game name
private int grid; // grid length
private int score; // target score
private ArrayList<User> users; // user list
public Game() {}
public Game(String name, int grid, int score) {
this.name = name;
this.grid = grid;
this.score = score;
users = new ArrayList<User>();
}
public String getName() { return name; }
public void setName(String string) { name = string; }
public int getGrid() { return grid; }
public void setGrid(int number) { grid = number; }
public int getScore() { return score; }
public void setScore(int number) { score = number; }
public ArrayList<User> getUsers() { return users; }
public void setUsers(ArrayList<User> list) { users = list; }
}
enum MessageType {
OK,
TOKEN,
ACKNOWLEDGED,
USER_NOT_EXIST,
USER_ADDRESSPORT_UNAVAILABLE,
GAME_NAME_UNAVAILABLE,
GAME_NOT_EXIST,
GAME_USER_DUPLICATION,
GAME_USER_WELCOME,
GAME_USER_LEFT,
GAME_OVER,
RING_ENTRY_REQUEST,
RING_ENTRY_FAILED,
RING_ENTRY_SUCCEEDED,
NEIGHBORS_UPDATE,
USER_LIST_UPDATE,
SOCKET_CLOSURE,
POSITION_REQUEST,
POSITION_VALUE,
POSITION_UPDATE,
POSITION_CHECK,
POSITION_MATCH,
BOMB_LAUNCH,
BOMB_EXPLOSION,
BOMB_AREA_MATCH,
}
class Message {
private MessageType type;
private User sender;
private User recipient;
private HashMap<String, String> head;
private String body;
private String ackIdx;
public MessageType getType() { return type; }
public void setType(MessageType type) { this.type = type; }
public User getSender() { return sender; }
public void setSender(User user) { sender = user; }
public User getRecipient() { return recipient; }
public void setRecipient(User user) { recipient = user; }
public HashMap<String, String> getHead() { return head; }
public void setHead(HashMap<String, String> map) { head = map; }
public String getBody() { return body; }
public void setBody(String string) { body = string; }
public String getAckIdx() { return ackIdx; }
public void setAckIdx(String string) { ackIdx = string; }
@Override
public String toString() {
return Json.toJson(this);
}
}
class Json {
private static ObjectMapper mapper = new ObjectMapper();
public static String toJson(Object obj) {
try {
return mapper.writeValueAsString(obj);
} catch (JsonProcessingException exc) {
exc.printStackTrace();
}
return null;
}
public static Object fromJson(String json, Class cls) {
try {
return mapper.readValue(json, cls);
} catch (IOException exc) {
exc.printStackTrace();
}
return null;
}
}
class TimeoutException extends Exception {}
class Semaphore {
private int permits;
private int counter;
private boolean timeout;
public Semaphore(int permits) {
this.permits = this.counter = permits;
this.timeout = true;
}
public Semaphore(int permits, int counter) {
this.permits = permits;
this.counter = counter;
this.timeout = true;
}
public synchronized void acquire() {
while (counter <= 0) {
try {
wait();
} catch (InterruptedException exc) {
exc.printStackTrace();
}
}
--counter;
}
public synchronized void acquire(long timeout) throws TimeoutException {
while (counter <= 0) {
try {
wait(timeout);
} catch (InterruptedException exc) {
exc.printStackTrace();
}
if (this.timeout) {
throw new TimeoutException();
}
}
--counter;
}
public synchronized void release() {
counter = Math.min(counter + 1, permits);
this.timeout = false;
notify(); // notifyAll();
}
}