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.Gravity;

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.patterns.RubikPattern;

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public class RubikStateSolution extends RubikStateAbstract implements RubikPostRender.ActionFinishedListener

  {

  private static final int DURATION_MILLIS = 750;

  private Button mBackButton;

  private ImageButton mPrevButton, mNextButton;

  private TextView mMovesText;

  private int[][] mMoves;

  private int mCurrMove, mNumMoves;

  private boolean mCanRotate;

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

  void leaveState(RubikActivity act)

    {

    RubikObject object = act.getObject();

    object.solve();

    }

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

  void enterState(final RubikActivity act)

    {

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

    final float scale = metrics.density;

    LayoutInflater inflater = act.getLayoutInflater();

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

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

    layoutTop.removeAllViews();

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

    text.setText(R.string.solution);

    layoutTop.addView(text);

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

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

    if( mNextButton==null ) setupNextButton(act,scale);

    if( mMovesText ==null ) setupTextView(act,scale);

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

    layoutLeft.removeAllViews();

    layoutLeft.addView(mPrevButton);

    layoutLeft.addView(mMovesText);

    layoutLeft.addView(mNextButton);

    if( mBackButton==null ) setupBackButton(act,scale);

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

    layoutRight.removeAllViews();

    layoutRight.addView(mBackButton);

    }

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

  private void setupPrevButton(final RubikActivity act, final float scale)

    {

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

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,LinearLayout.LayoutParams.MATCH_PARENT,1.0f);

    mPrevButton = new ImageButton(act);

    mPrevButton.setLayoutParams(params);

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

    mPrevButton.setImageResource(R.drawable.left);

    mPrevButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikPostRender post = act.getPostRender();

        backMove(post);

        mMovesText.setText(act.getString(R.string.mo_placeholder,mCurrMove,mNumMoves));

        }

      });

    }

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

  private void setupNextButton(final RubikActivity act, final float scale)

    {

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

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,LinearLayout.LayoutParams.MATCH_PARENT, 1.0f);

    mNextButton = new ImageButton(act);

    mNextButton.setLayoutParams(params);

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

    mNextButton.setImageResource(R.drawable.right);

    mNextButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikPostRender post = act.getPostRender();

        makeMove(post);

        mMovesText.setText(act.getString(R.string.mo_placeholder,mCurrMove,mNumMoves));

        }

      });

    }

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

  private void setupTextView(final RubikActivity act, final float scale)

    {

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

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,LinearLayout.LayoutParams.MATCH_PARENT,2.0f);

    mMovesText = new TextView(act);

    mMovesText.setTextSize(20);

    mMovesText.setLayoutParams(params);

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

    mMovesText.setGravity(Gravity.CENTER);

    mMovesText.setText(act.getString(R.string.mo_placeholder,mCurrMove,mNumMoves));

    }

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

  private void setupBackButton(final RubikActivity act, final float scale)

    {

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

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

    mBackButton = new Button(act);

    mBackButton.setLayoutParams(backParams);

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

    mBackButton.setText(R.string.back);

    mBackButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikState.goBack(act);

        }

      });

    }

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

  private void makeMove(RubikPostRender post)

    {

    if( mCanRotate )

      {

      mCurrMove++;

      if( mCurrMove>mNumMoves )

        {

        mCurrMove= 0;

        post.initializeObject(null);

        }

      else

        {

        int axis     = mMoves[mCurrMove-1][0];

		    int rowBitmap= mMoves[mCurrMove-1][1];

		    int bareAngle= mMoves[mCurrMove-1][2];

        int angle    = bareAngle*(360/post.getObject().getBasicAngle());

        int numRot   = Math.abs(bareAngle);

        if( angle!=0 )

          {

          mCanRotate = false;

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

          }

        else

          {

          android.util.Log.e("solution", "error: solution contains angle 0");

          }

        }

      }

    else

      {

      android.util.Log.e("solution", "failed to make move!");

      }

    }

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

  private void backMove(RubikPostRender post)

    {

    if( mCanRotate )

      {

      mCurrMove--;

      if( mCurrMove<0 )

        {

        mCurrMove=mNumMoves;

        post.initializeObject(mMoves);

        }

      else

        {

        int axis     = mMoves[mCurrMove][0];

		    int rowBitmap= mMoves[mCurrMove][1];

		    int bareAngle= mMoves[mCurrMove][2];

        int angle    = bareAngle*(360/post.getObject().getBasicAngle());

        int numRot   = Math.abs(bareAngle);

        if( angle!=0 )

          {

          mCanRotate = false;

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

          }

        else

          {

          android.util.Log.e("solution", "error: solution contains angle 0");

          }

        }

      }

    else

      {

      android.util.Log.e("solution", "failed to back move!");

      }

    }

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

  void setupMoves(final RubikActivity act, String moves)

    {

    mCanRotate= true;

    mCurrMove = 0;

    mNumMoves = moves.length()/4;

    mMoves    = new int[mNumMoves][3];

    RubikPattern.parseMoves(mMoves,mNumMoves,moves);

    mMovesText.setText(act.getString(R.string.mo_placeholder,mCurrMove,mNumMoves));

    }

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

  public void savePreferences(SharedPreferences.Editor editor)

    {

    mBackButton= null;

    mPrevButton= null;

    mNextButton= null;

    mMovesText = null;

    }

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

  public void restorePreferences(SharedPreferences preferences)

    {

    }

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

  public void onActionFinished(final long effectID)

    {

    mCanRotate = true;

    }

  }