Android Open Source - Tilt-snake Game Activity

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Back to project page Tilt-snake.

License

The source code is released under:

Apache License

Java Source Code

package com.awhittle.tiltsnake;
//  ww w .java 2 s  .  c  o m
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;

public class GameActivity extends Activity {

    private GLSurfaceView mGLView;
  private SensorManager mManager;
  private Sensor mGravSensor;
  private static final int sType = Sensor.TYPE_ACCELEROMETER;  //Sensor type
  public static int dir;
  public static boolean snakeAlive = true;
  public static int counter = 0;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //Keep screen awake
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
      
      //Initialize sensor and sensor manager
    mManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
    mGravSensor = mManager.getDefaultSensor(sType);
    
    // Create a GLSurfaceView instance and set it
      // as the ContentView for this Activity.
      mGLView = new MyGLSurfaceView(this);
      setContentView(mGLView);
    
    }

  private SensorEventListener mSensorListener = new SensorEventListener() {
    
    @Override
      public void onSensorChanged(SensorEvent event) {
      
      setDirection(event);
      
      //If snake is dead, end game
      if(!snakeAlive){
        gotoEnd(mGLView);
      }  
    }
      @Override
      public void onAccuracyChanged(Sensor sensor, int accuracy) {
        //Not needed for game
      }
    };
    
    @Override
    protected void onResume() {
      super.onResume();
      mGLView.onResume();
      //Register sensor
      mManager.registerListener(mSensorListener, mManager.getDefaultSensor(sType), SensorManager.SENSOR_DELAY_GAME);
    }

    @Override
    protected void onPause() {
      super.onPause();
      mGLView.onPause();
      //Unregister sensor
      mManager.unregisterListener(mSensorListener);
    }
    
    @Override
    protected void onDestroy() {
      super.onDestroy();
      //Unregister sensor, if it hasn't been so already
      if (mGravSensor != null) {
        mManager.unregisterListener(mSensorListener);
      } 
    }
    
    @Override
    public void onBackPressed(){
      //End game
        gotoEnd(mGLView); 
    }
    
    public void gotoEnd(View v) {
      //Save high score
      SharedPreferences settings = getSharedPreferences(MainActivity.PREF_NAME, 0);
      Saving.saveScore(settings, counter);
      
      //Unregister sensor, if it hasn't been so already
      if (mGravSensor != null) {
        mManager.unregisterListener(mSensorListener);
      } 
        
      //Terminate activity
      finish();
      android.os.Process.killProcess(android.os.Process.myPid());
      
      //Go back to start screen
      Intent intent = new Intent(this, MainActivity.class);
      startActivity(intent);
    }
    
    private void setDirection(SensorEvent event){
      dir = Direction.getDirection(event);
    }
    
}

Java Source Code List

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