Game.java

package org.yohfee.kantoroid;

import org.yohfee.kantoroid.GameEventListener;

public class Game {

  private final GameEventListener listener;
  private long score;
  private float bonus;
  private float prevX;
  private float prevY;
  private float prevZ;
  private int count;

  public Game(GameEventListener listener) {
    this.listener = listener;
    score = 0;
    bonus = 1;
    count = 0;
    prevX = 0;
    prevY = 0;
    prevZ = 0;
  }

  public void send(float x, float y, float z) {
    if (x == prevX) bonus += 0.1;
    if (y == prevY) bonus += 0.5;
    if (z == prevZ) bonus += 0.2;
    if (x != prevX || y != prevY || z != prevZ) bonus = 1;
    score += Math.abs(Math.tan(Math.toRadians(y))) * (90 - Math.abs(z)) * bonus;
    listener.onSent();
    prevX = x;
    prevY = y;
    prevZ = z;
    if (++count == 200) listener.onFinish();
  }

  public long getScore() {
    return score;
  }

  public String getResult() {
    if (score < 1000) return "竿燈力…たったの" + score + "か…ゴミめ…";
    if (score < 5000) return "ほう…竿燈力" + score + "。こんなやつもいたのか。";
    if (score < 10000) return score + "…バカめ!その程度の竿燈力でオレたちにはむかうつもりか…!?";
    if (score < 30000) return "竿燈力" + score + "だと!そいつは何かのマチガイだ…";
    if (score < 50000) return "竿燈力" + score + "…!!バカな…!!";
    if (score < 100000) return "これはすごい!竿燈力" + score + "まであがりましたよ。わたしの竿燈力は530000です。";
    return "竿燈力" + score + "…(ボンッ!!)";
  }
}

GameEventListener.java

package org.yohfee.kantoroid;

public interface GameEventListener {

  public void onSent();

  public void onFinish();

}

KantoroidActivity.java

package org.yohfee.kantoroid;

import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;

import org.yohfee.kantoroid.Game;
import org.yohfee.kantoroid.GameEventListener;

public class KantoroidActivity extends Activity
  implements SensorEventListener, OnClickListener, GameEventListener {

  private SensorManager manager;
  private TextView score;
  private Button button;
  private Game game;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    manager = (SensorManager)getSystemService(SENSOR_SERVICE);
    score = (TextView)findViewById(R.id.score);
    button = (Button)findViewById(R.id.button);
    button.setOnClickListener(this);
  }

  @Override
  public void onResume() {
    super.onResume();
    List<Sensor> sensors = manager.getSensorList(Sensor.TYPE_ORIENTATION);
    if (sensors.size() == 0) {
      new AlertDialog.Builder(this)
        .setMessage("傾きセンサーついてないよ！")
        .setPositiveButton("OK", null)
        .show();
      finish();
    } else {
      manager.registerListener(this, sensors.get(0), SensorManager.SENSOR_DELAY_NORMAL);
    }
  }

  @Override
  public void onStop() {
    manager.unregisterListener(this);
    super.onStop();
  }

  public void onClick(View v) {
    button.setEnabled(false);
    game = new Game(this);
  }

  public void onSent() {
    score.setText("竿燈力" + game.getScore());
  }

  public void onFinish() {
    new AlertDialog.Builder(this)
      .setTitle(R.string.app_name)
      .setMessage(game.getResult())
      .setPositiveButton("OK", null)
      .show();
    button.setEnabled(true);
    game = null;
  }

  public void onAccuracyChanged(final Sensor sensor, int accuracy) {				
  }

  public void onSensorChanged(final SensorEvent event) {
    if (game != null && event.sensor.getType() == Sensor.TYPE_ORIENTATION) {
      Log.d("KANTOROID", "ORIENTATION\t" + event.values[0] + "\t" + event.values[1] + "\t" + event.values[2]);
      float x = event.values[0];
      float y = event.values[1];
      float z = event.values[2];
      game.send(x, y, z);
    }
  }
}