Magic Cube

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// Copyright 2020 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube is free software: you can redistribute it and/or modify                            //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Magic Cube is distributed in the hope that it will be useful,                                 //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.states;

import android.content.SharedPreferences;

import android.util.DisplayMetrics;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.Button;

import android.widget.ImageButton;

import android.widget.LinearLayout;

import android.widget.TextView;

import org.distorted.main.R;

import org.distorted.main.RubikActivity;

import org.distorted.main.RubikPostRender;

import org.distorted.objects.RubikObject;

import org.distorted.objects.RubikObjectList;

import org.distorted.scores.RubikScores;

import java.util.ArrayList;

import java.util.Timer;

import java.util.TimerTask;

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public class RubikStateSolving extends RubikStateAbstract implements RubikPostRender.ActionFinishedListener

  {

  private static final int DURATION_MILLIS = 750;

  private TextView mTime;

  private Timer mTimer;

  private long mStartTime;

  private boolean mRunning;

  private RubikScores mScores;

  private Button mBack;

  private ImageButton mPrevButton;

  private boolean mCanPrevMove;

  private ArrayList<Move> mMoves;

  private static class Move

    {

    private int mAxis, mRow, mAngle;

    Move(int axis, int row, int angle)

      {

      mAxis = axis;

      mRow  = row;

      mAngle= angle;

      }

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  RubikStateSolving()

    {

    mScores = RubikScores.getInstance();

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void leaveState(RubikActivity act)

    {

    stopCounting(act);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void enterState(final RubikActivity act)

    {

    mCanPrevMove = true;

    if( mMoves==null ) mMoves = new ArrayList<>();

    else               mMoves.clear();

    LayoutInflater inflater = act.getLayoutInflater();

    DisplayMetrics metrics = act.getResources().getDisplayMetrics();

    float scale = metrics.density;

    // TOP ////////////////////////////

    LinearLayout layoutTop = act.findViewById(R.id.upperBar);

    layoutTop.removeAllViews();

    mTime = (TextView)inflater.inflate(R.layout.upper_text, null);

    mTime.setText(R.string.ready);

    layoutTop.addView(mTime);

    // BOT ////////////////////////////

    LinearLayout layoutLeft = act.findViewById(R.id.mainBarLeft);

    layoutLeft.removeAllViews();

    if( mPrevButton==null ) setupPrevMoveButtom(act,scale);

    layoutLeft.addView(mPrevButton);

    LinearLayout layoutRight = act.findViewById(R.id.mainBarRight);

    layoutRight.removeAllViews();

    int padding = (int)(5*scale + 0.5f);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);

    mBack = new Button(act);

    mBack.setLayoutParams(params);

    mBack.setPadding(padding,0,padding,0);

    mBack.setText(R.string.back);

    mBack.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikState.goBack(act);

        }

      });

    layoutRight.addView(mBack);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  private void setupPrevMoveButtom(final RubikActivity act, float scale)

    {

    int padding = (int)( 3*scale + 0.5f);

    int width   = (int)(60*scale + 0.5f);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(width,LinearLayout.LayoutParams.MATCH_PARENT);

    mPrevButton = new ImageButton(act);

    mPrevButton.setLayoutParams(params);

    mPrevButton.setPadding(padding,0,padding,0);

    mPrevButton.setImageResource(R.drawable.left);

    mPrevButton.setEnabled(false);

    mPrevButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikPostRender post = act.getPostRender();

        backMove(post);

        }

      });

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  private void backMove(RubikPostRender post)

    {

    if( mCanPrevMove )

      {

      int numMoves = mMoves.size();

      if( numMoves>0 )

        {

        Move move = mMoves.remove(numMoves-1);

        RubikObject object = post.getObject();

        int axis  = move.mAxis;

        int row   = (1<<move.mRow);

        int angle = move.mAngle;

        int numRot= Math.abs(angle*object.getBasicAngle()/360);

        if( angle!=0 )

          {

          mCanPrevMove = false;

          post.addRotation(this, axis, row, -angle, numRot*DURATION_MILLIS);

          if( numMoves==1 )

            {

            mPrevButton.setEnabled(false);

            }

          }

        else

          {

          android.util.Log.e("solution", "error: trying to back move of angle 0");

          }

        }

      else

        {

        android.util.Log.e("solv", "error: no moves to back!");

        }

      }

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void addMove(int axis, int row, int angle)

    {

    mMoves.add(new Move(axis,row,angle));

    if( mMoves.size()==1 )

      {

      mPrevButton.setEnabled(true);

      }

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void savePreferences(SharedPreferences.Editor editor)

    {

    mScores.savePreferences(editor);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void restorePreferences(SharedPreferences preferences)

    {

    mScores.restorePreferences(preferences);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void startCounting(final RubikActivity act)

    {

    if( !mRunning )

      {

      mRunning = true;

      mStartTime = System.currentTimeMillis();

      mTimer = new Timer();

      mTimer.scheduleAtFixedRate(new TimerTask()

        {

        @Override

        public void run()

          {

          act.runOnUiThread(new Runnable()

            {

            @Override

            public void run()

              {

              int elapsed = (int)(System.currentTimeMillis()-mStartTime)/1000;

              mTime.setText(act.getString(R.string.tm_placeholder,elapsed/60,elapsed%60));

              }

            });

          }

        }, 0, 1000);

      }

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public long stopCounting(RubikActivity act)

    {

    if( mRunning )

      {

      act.runOnUiThread(new Runnable()

        {

        @Override

        public void run()

          {

          mTime.setText(R.string.solved);

          mBack.setClickable(false);

          }

        });

      if( mTimer!=null )

        {

        mTimer.cancel();

        mTimer = null;

        }

      mRunning = false;

      long timeTaken = System.currentTimeMillis()-mStartTime;

      RubikStatePlay play = (RubikStatePlay)RubikState.PLAY.getStateClass();

      int object  = play.getObject();

      int size    = play.getSize();

      int level   = play.getLevel();

      int realSize= RubikObjectList.getSizeIndex(object,size);

      boolean isNew = mScores.setRecord(object, realSize, level, timeTaken);

      return isNew ? timeTaken : -timeTaken;

      }

    return 0;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void onActionFinished(final long effectID)

    {

    mCanPrevMove = true;

    }

  }