260 lines
8.5 KiB
Java
Executable File
260 lines
8.5 KiB
Java
Executable File
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package com.example.tictactoe.library;
|
|
|
|
import java.util.Random;
|
|
|
|
import android.app.Activity;
|
|
import android.os.Bundle;
|
|
import android.os.Handler;
|
|
import android.os.Message;
|
|
import android.os.Handler.Callback;
|
|
import android.view.View;
|
|
import android.view.View.OnClickListener;
|
|
import android.widget.Button;
|
|
import android.widget.TextView;
|
|
|
|
import com.example.tictactoe.library.GameView.ICellListener;
|
|
import com.example.tictactoe.library.GameView.State;
|
|
|
|
|
|
public class GameActivity extends Activity {
|
|
|
|
/** Start player. Must be 1 or 2. Default is 1. */
|
|
public static final String EXTRA_START_PLAYER =
|
|
"com.example.tictactoe.library.GameActivity.EXTRA_START_PLAYER";
|
|
|
|
private static final int MSG_COMPUTER_TURN = 1;
|
|
private static final long COMPUTER_DELAY_MS = 500;
|
|
|
|
private Handler mHandler = new Handler(new MyHandlerCallback());
|
|
private Random mRnd = new Random();
|
|
private GameView mGameView;
|
|
private TextView mInfoView;
|
|
private Button mButtonNext;
|
|
|
|
/** Called when the activity is first created. */
|
|
@Override
|
|
public void onCreate(Bundle bundle) {
|
|
super.onCreate(bundle);
|
|
|
|
/*
|
|
* IMPORTANT: all resource IDs from this library will eventually be merged
|
|
* with the resources from the main project that will use the library.
|
|
*
|
|
* If the main project and the libraries define the same resource IDs,
|
|
* the application project will always have priority and override library resources
|
|
* and IDs defined in multiple libraries are resolved based on the libraries priority
|
|
* defined in the main project.
|
|
*
|
|
* An intentional consequence is that the main project can override some resources
|
|
* from the library.
|
|
* (TODO insert example).
|
|
*
|
|
* To avoid potential conflicts, it is suggested to add a prefix to the
|
|
* library resource names.
|
|
*/
|
|
setContentView(R.layout.lib_game);
|
|
|
|
mGameView = (GameView) findViewById(R.id.game_view);
|
|
mInfoView = (TextView) findViewById(R.id.info_turn);
|
|
mButtonNext = (Button) findViewById(R.id.next_turn);
|
|
|
|
mGameView.setFocusable(true);
|
|
mGameView.setFocusableInTouchMode(true);
|
|
mGameView.setCellListener(new MyCellListener());
|
|
|
|
mButtonNext.setOnClickListener(new MyButtonListener());
|
|
}
|
|
|
|
@Override
|
|
protected void onResume() {
|
|
super.onResume();
|
|
|
|
State player = mGameView.getCurrentPlayer();
|
|
if (player == State.UNKNOWN) {
|
|
player = State.fromInt(getIntent().getIntExtra(EXTRA_START_PLAYER, 1));
|
|
if (!checkGameFinished(player)) {
|
|
selectTurn(player);
|
|
}
|
|
}
|
|
if (player == State.PLAYER2) {
|
|
mHandler.sendEmptyMessageDelayed(MSG_COMPUTER_TURN, COMPUTER_DELAY_MS);
|
|
}
|
|
if (player == State.WIN) {
|
|
setWinState(mGameView.getWinner());
|
|
}
|
|
}
|
|
|
|
|
|
private State selectTurn(State player) {
|
|
mGameView.setCurrentPlayer(player);
|
|
mButtonNext.setEnabled(false);
|
|
|
|
if (player == State.PLAYER1) {
|
|
mInfoView.setText("Player 1's turn -- that's you!");
|
|
mGameView.setEnabled(true);
|
|
|
|
} else if (player == State.PLAYER2) {
|
|
mInfoView.setText("Player 2's turn (that's the computer)");
|
|
mGameView.setEnabled(false);
|
|
}
|
|
|
|
return player;
|
|
}
|
|
|
|
private class MyCellListener implements ICellListener {
|
|
public void onCellSelected() {
|
|
if (mGameView.getCurrentPlayer() == State.PLAYER1) {
|
|
int cell = mGameView.getSelection();
|
|
mButtonNext.setEnabled(cell >= 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
private class MyButtonListener implements OnClickListener {
|
|
|
|
public void onClick(View v) {
|
|
State player = mGameView.getCurrentPlayer();
|
|
|
|
if (player == State.WIN) {
|
|
GameActivity.this.finish();
|
|
|
|
} else if (player == State.PLAYER1) {
|
|
int cell = mGameView.getSelection();
|
|
if (cell >= 0) {
|
|
mGameView.stopBlink();
|
|
mGameView.setCell(cell, player);
|
|
finishTurn();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private class MyHandlerCallback implements Callback {
|
|
public boolean handleMessage(Message msg) {
|
|
if (msg.what == MSG_COMPUTER_TURN) {
|
|
|
|
// Pick a non-used cell at random. That's about all the AI you need for this game.
|
|
State[] data = mGameView.getData();
|
|
int used = 0;
|
|
while (used != 0x1F) {
|
|
int index = mRnd.nextInt(9);
|
|
if (((used >> index) & 1) == 0) {
|
|
used |= 1 << index;
|
|
if (data[index] == State.EMPTY) {
|
|
mGameView.setCell(index, mGameView.getCurrentPlayer());
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
finishTurn();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private State getOtherPlayer(State player) {
|
|
return player == State.PLAYER1 ? State.PLAYER2 : State.PLAYER1;
|
|
}
|
|
|
|
private void finishTurn() {
|
|
State player = mGameView.getCurrentPlayer();
|
|
if (!checkGameFinished(player)) {
|
|
player = selectTurn(getOtherPlayer(player));
|
|
if (player == State.PLAYER2) {
|
|
mHandler.sendEmptyMessageDelayed(MSG_COMPUTER_TURN, COMPUTER_DELAY_MS);
|
|
}
|
|
}
|
|
}
|
|
|
|
public boolean checkGameFinished(State player) {
|
|
State[] data = mGameView.getData();
|
|
boolean full = true;
|
|
|
|
int col = -1;
|
|
int row = -1;
|
|
int diag = -1;
|
|
|
|
// check rows
|
|
for (int j = 0, k = 0; j < 3; j++, k += 3) {
|
|
if (data[k] != State.EMPTY && data[k] == data[k+1] && data[k] == data[k+2]) {
|
|
row = j;
|
|
}
|
|
if (full && (data[k] == State.EMPTY ||
|
|
data[k+1] == State.EMPTY ||
|
|
data[k+2] == State.EMPTY)) {
|
|
full = false;
|
|
}
|
|
}
|
|
|
|
// check columns
|
|
for (int i = 0; i < 3; i++) {
|
|
if (data[i] != State.EMPTY && data[i] == data[i+3] && data[i] == data[i+6]) {
|
|
col = i;
|
|
}
|
|
}
|
|
|
|
// check diagonals
|
|
if (data[0] != State.EMPTY && data[0] == data[1+3] && data[0] == data[2+6]) {
|
|
diag = 0;
|
|
} else if (data[2] != State.EMPTY && data[2] == data[1+3] && data[2] == data[0+6]) {
|
|
diag = 1;
|
|
}
|
|
|
|
if (col != -1 || row != -1 || diag != -1) {
|
|
setFinished(player, col, row, diag);
|
|
return true;
|
|
}
|
|
|
|
// if we get here, there's no winner but the board is full.
|
|
if (full) {
|
|
setFinished(State.EMPTY, -1, -1, -1);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private void setFinished(State player, int col, int row, int diagonal) {
|
|
|
|
mGameView.setCurrentPlayer(State.WIN);
|
|
mGameView.setWinner(player);
|
|
mGameView.setEnabled(false);
|
|
mGameView.setFinished(col, row, diagonal);
|
|
|
|
setWinState(player);
|
|
}
|
|
|
|
private void setWinState(State player) {
|
|
mButtonNext.setEnabled(true);
|
|
mButtonNext.setText("Back");
|
|
|
|
String text;
|
|
|
|
if (player == State.EMPTY) {
|
|
text = "This is a tie! No one wins!";
|
|
} else if (player == State.PLAYER1) {
|
|
text = "Player 1 (you) wins!";
|
|
} else {
|
|
text = "Player 2 (computer) wins!";
|
|
}
|
|
mInfoView.setText(text);
|
|
}
|
|
}
|