[Android]四子棋游戏开发源码和分析

最近写了一个四子棋，说实话，我个人比较喜欢Java应用开发和JavaEE开发，但是对于Android游戏开发真的没有什么经验，所以在这个游戏开发的过程中遇见的问题贴一下分享一下：

四子棋的规则和五子棋判断胜负很类似，但是棋子的下落和俄罗斯方块很类似（点击某一列，该列就从上方以动画的形式下落）

废话不多说，先看运行效果：

游戏设计过程中遇见的问题：

1.加载bitmap图片的时候，原来图片的分辨率为130 * 130，被加载到了内存中后，尺寸为390 * 390，查了资料才知道Android会自动缩放图片，所以加载图片的时候需要一个options：

BitmapFactory.Options options = new BitmapFactory.Options();options.inScaled = false;Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(),color.equals("red") ? R.drawable.circle_red : R.drawable.circle_green,options);

2.bitmap缩放的方法：

Matrix matrix = new Matrix();matrix.setScale(scaleX, scaleY);Bitmap bitmap = createBitMapCopy();Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);

3.View的平移动画写法：

TranslateAnimation translateAnimation = new TranslateAnimation(0, 0, -points.get(position).y, 0);translateAnimation.setDuration(1024);gameView.setAnimation(translateAnimation);

4.源代码贴一下：

package site.iknown.connect4;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.graphics.Point;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.transition.Transition;import android.view.MotionEvent;import android.view.View;import android.view.animation.Animation;import android.view.animation.TranslateAnimation;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;/** * Created by IamBestCoder on 17/5/16. */public class GameActivity extends AppCompatActivity implements View.OnClickListener{    private FrameLayout frameLayout = null;    private int countClick = 0;    private ImageView greenImage = null;    private ImageView redImage = null;    private int map[][] = new int[9][10];    private TextView greenText = null;    private TextView redText = null;    private TextView scoreView = null;    //游戏者    private Player green = null;    private Player red = null;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        getSupportActionBar().hide();        setContentView(R.layout.activity_game);        //游戏者取值        green = (Player) getIntent().getSerializableExtra("green");        red = (Player) getIntent().getSerializableExtra("red");        //设置文本        greenText = (TextView) findViewById(R.id.game_text_green);        redText = (TextView) findViewById(R.id.game_text_red);        greenText.setText(green.getName());        redText.setText(red.getName());        scoreView = (TextView) findViewById(R.id.game_text_score);        findViewById(R.id.game_play).setOnClickListener(this);        findViewById(R.id.game_back).setOnClickListener(this);        //ImageView        greenImage = (ImageView) findViewById(R.id.game_image_green);        redImage = (ImageView) findViewById(R.id.game_image_red);        //framelayout        frameLayout = (FrameLayout) findViewById(R.id.game_view);        frameLayout.setOnTouchListener(new View.OnTouchListener()        {            @Override            public boolean onTouch(View v, MotionEvent event)            {                switch (event.getAction())                {                    case MotionEvent.ACTION_DOWN:                        //计算缩放比                        float scaleX =                                (float) (frameLayout.getWidth() / 700);                        float scaleY =                                (float) (frameLayout.getHeight() / 600);                        countClick++;                        String color = null;                        if (countClick % 2 == 0)                        {                            greenImage.setVisibility(View.VISIBLE);                            redImage.setVisibility(View.INVISIBLE);                            scaleX /= 13 / 7;                            scaleY /= 13 / 7;                            color = "red";                        } else                        {                            greenImage.setVisibility(View.INVISIBLE);                            redImage.setVisibility(View.VISIBLE);                            color = "green";                            scaleX /= 12 / 7;                            scaleY /= 12 / 7;                        }                        int width = frameLayout.getWidth() / 7;                        int height = frameLayout.getHeight() / 6;                        boolean isContinue = true;                        int i = 0;                        //纵轴坐标合集                        ArrayList<Point> points = null;                        while (isContinue && i < 7)                        {                            i++;                            points = new ArrayList<Point>();                            int circleX = width * i - (int) (width * 0.5);                            for (int j = 1; j <= 6; j++)                            {                                //中心点的位置应该是这个格子的中心                                int circleY = height * j - (int) (height * 0.5);                                points.add(new Point(circleX, circleY));                            }                            //找出所在行数                            if (Math.abs(event.getX() * 1. - circleX * 1.) <= 64)                            {                                isContinue = false;                            }                        }                        //最后画点的位置                        int position = findEmptyPosition(i);                        Point point = points.get(position);                        View gameView =                                new GameView(GameActivity.this, point.x, point.y, scaleX, scaleY,                                        color);                        //动画                        frameLayout.addView(gameView);                        TranslateAnimation translateAnimation =                                new TranslateAnimation(0, 0, -points.get(position).y, 0);                        translateAnimation.setDuration(1024);                        gameView.setAnimation(translateAnimation);                        //更新map                        map[position][i] = countClick % 2 == 0 ? 2 : 1;                        //判断是否有冠军产生                        int winner = createWinner();                        if (winner != 0)                        {                            //更新比分                            if (winner == 1)                            {                                green.setSocre(green.getSocre() + 1);                            } else if (winner == 2)                            {                                red.setSocre(red.getSocre() + 1);                            }                            showScore();                            //结果                            View view = View.inflate(GameActivity.this, R.layout.view_winner, null);                            ImageView winnerImage = (ImageView) view.findViewById(R.id.over_image);                            TextView winnerText = (TextView) view.findViewById(R.id.over_text);                            //设置文本和图片                            winnerImage.setImageResource(                                    winner == 1 ? R.drawable.person_green : R.drawable.person_red);                            winnerText.setText(winner == 1 ? green.getName() : red.getName());                            //对话框                            AlertDialog.Builder builder =                                    new AlertDialog.Builder(GameActivity.this);                            builder.setView(view).setPositiveButton("Continue",                                    new DialogInterface.OnClickListener()                                    {                                        @Override                                        public void onClick(DialogInterface dialog, int which)                                        {                                            frameLayout.removeAllViews();                                            //清空集合                                            map = new int[9][10];                                        }                                    }).create().show();                        }                        break;                }                return false;            }        });    }    private int createWinner()    {        //判断是否有冠军产生        int winner = 0;        for (int i = 0; i < 6; i++)        {            for (int j = 0; j < 7; j++)            {                int n = map[i][j];                if (n != 0)                {                    if ((n == map[i + 1][j + 1] && n == map[i + 2][j + 2] &&                            n == map[i + 3][j + 3]) ||                            (n == map[i][j + 1] && n == map[i][j + 2] && n == map[i][j + 3]) ||                            (n == map[i + 1][j] && n == map[i + 2][j] && n == map[i + 3][j]) ||                            (i >= 3 && (n == map[i - 1][j + 1] && n == map[i - 2][j + 2] &&                                    n == map[i - 3][j + 3])))                    {                        winner = n;                    }                }            }            System.out.println();        }        return winner;    }    private int findEmptyPosition(int i)    {        //找到空的位置        for (int j = 5; j >= 0; j--)        {            if (map[j][i] != 1 && map[j][i] != 2)            {                return j;            }        }        return 0;    }    private void showScore()    {        scoreView.setText(green.getSocre() + " : " + red.getSocre());    }    @Override    public void onClick(View v)    {        switch (v.getId())        {            case R.id.game_back:                //返回                finish();                break;            case R.id.game_play:                //再来一局                Toast.makeText(GameActivity.this, "Game over!", Toast.LENGTH_LONG).show();                green.setSocre(0);                red.setSocre(0);                //清屏                frameLayout.removeAllViews();                //清空集合                map = new int[9][10];                showScore();                break;            default:                break;        }    }}