Android Open Source - Tetris_android Game Activity

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From Project

Back to project page Tetris_android.

License

The source code is released under:

GNU General Public License

Java Source Code

package fr.tiphedor.tetris;
//from  w  ww  .j a  v  a2s.  c om
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;


import com.google.android.gms.games.Game;

import java.util.Timer;
import java.util.TimerTask;


public class GameActivity extends Activity {

    /**
     * This array contains the game board itself.
     */
    private int[][] gameBoard;

    /**
     * Object referencing the piece currently played
     */
    private Piece piece;

    /**
     * Contains <code>true</code> if game is lost, <code>false</code> instate.
     */
    boolean gameOver;

    /**
     * Temporal variable used to determine if it's time for a pice to fall.
     */
    long previousTime;

    /**
     * @see #previousTime
     */
    long timeBefore;

    /**
     * This class is called when te program starts and stay awake the whole time.
     */
    private GestureDetector gestureDetector;

    private TetrisView tV;

    private Timer timer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        gameBoard = new int[10][22];

        gestureDetector = new GestureDetector(new SwipeGestureDetector());

        piece = new Piece(gameBoard);

        tV = new TetrisView(this);
        tV.setPiece(piece);
        setContentView(tV);

        final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
        alertDialog.setTitle("Game over !");
        alertDialog.setMessage("Partie termine ! Score final : " + tV.getPiece().getScore());
        alertDialog.setButton("Ok... :(", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                Intent intGameOver = new Intent(GameActivity.this, MenuActivity.class);
                startActivity(intGameOver);
                finish();
            }
        });
        alertDialog.setIcon(R.drawable.ic_launcher);

        int delay = 500; // delay for 1 sec.
        int period = 500; // repeat every 10 sec.
        timer = new Timer();
        timer.scheduleAtFixedRate(new TimerTask() {
            public void run() {
                tV.getPiece().moveDown();
                if(tV.getPiece().isGameOver()) {
                    timer.cancel();
                    GameActivity.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            alertDialog.show();
                        }
                    });
                }
            }
        }, delay, period);



    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.game, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if(item.getItemId() == R.id.menuGameAbort) {
            Intent intAbort = new Intent(GameActivity.this, MenuActivity.class);
            startActivity(intAbort);
            finish();
        }
        return true;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (gestureDetector.onTouchEvent(event)) {
            return true;
        }
        return super.onTouchEvent(event);
    }

    private void onLeftSwipe() {
        tV.getPiece().moveLeft();
    }

    private void onRightSwipe() {
        tV.getPiece().moveRight();
    }

    private void onSingleTapConfirmed() {
        tV.getPiece().rotateClockwise();
    }

    private class SwipeGestureDetector extends GestureDetector.SimpleOnGestureListener {
        // Swipe properties, you can change it to make the swipe
        // longer or shorter and speed
        private static final int SWIPE_MIN_DISTANCE = 120;
        private static final int SWIPE_MAX_OFF_PATH = 200;
        private static final int SWIPE_THRESHOLD_VELOCITY = 200;

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            try {
                float diffAbs = Math.abs(e1.getY() - e2.getY());
                float diff = e1.getX() - e2.getX();
                float yDiff = e1.getY() - e2.getY();

                if (diffAbs > SWIPE_MAX_OFF_PATH)
                    return false;

                // Left swipe
                if (diff > SWIPE_MIN_DISTANCE
                        && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                    GameActivity.this.onLeftSwipe();

                    // Right swipe
                } else if (-diff > SWIPE_MIN_DISTANCE
                        && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                    GameActivity.this.onRightSwipe();
                }
            } catch (Exception e) {
                Log.e("YourActivity", "Error on gestures");
            }
            return false;
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent event) {
            GameActivity.this.onSingleTapConfirmed();
            return true;
        }
    }
}

Java Source Code List

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