package game;import java.util.Random;public class game{    int pane[][]=new int[4][4];    //棋盘    void showpane()    //显示棋盘    {        for(int a=0;a<=40;a++){            System.out.println();        }        System.out.printf("%50s\n"," |-----------------------|");                for(int i=0;i<=3;i++)            {            System.out.printf("%24s","");            for(int j=0;j<=3;j++)            {                                if(pane[i][j]==0)                    System.out.printf("%2s%4s","|"," ");                else                    System.out.printf("%2s%4d","|",pane[i][j]);                    if(j==3)                {                    System.out.printf("%2s\n","|");                    System.out.printf("%50s\n"," |-----------------------|");                }            }        }        System.out.printf("%50s\n","按w-向上移动；s-向下移动；a-向左移动；d-向右移动");        int gameOver=1;//   判断游戏结束条件        for(int i=0;i<4;i++){            for(int j=0;j<4;j++){                if(pane[i][j]==0){                    gameOver=0;                }            }        }        if(gameOver==1){            System.out.println("------游戏结束-----------游戏结束-----");            System.exit(0);        }    }    void newgame()    //开始游戏    {            for(int i=0;i<=3;i++)    //初始化棋盘            for(int j=0;j<=3;j++)                pane[i][j]=0;                Random random = new Random();        int m=random.nextInt(4);//产生一个0到4（不包括4的随机数）        int n=random.nextInt(4);        int p=random.nextInt(4);        int q=random.nextInt(4);                //在随机的位置上产生初值2        pane[m][n]=pane[p][q]=2;        showpane();    }    void up(){//向上操作        int i,j,three;        for(j=0;j<4;j++){  //上移动            three=0;            for(i=0;i<4;i++){                if(pane[i][j]>0){                    int t=pane[i][j];                    pane[i][j]=0;                    pane[three][j]=t;                    three++;                }            }        }        for(j=0;j<4;j++){  //合并数            for(i=0;i<3;i++){                if(pane[i][j]==pane[i+1][j]&&pane[i][j]!=0){                    pane[i][j]=pane[i][j]*2;                    pane[i+1][j]=0;                    int k=i+1;                    for(;k+1<=3&&pane[k+1][j]>0;k++){                        pane[k][j]=pane[k+1][j];                        pane[k+1][j]=0;                    }                }            }        }        random();//产生随机数        showpane();//刷新棋盘    }    void low(){ //向下        int i,j,three;        for(j=0;j<4;j++){//下移动             three=3;            for(i=3;i>=0;i--){                if(pane[i][j]>0){                    int t=pane[i][j];                    pane[i][j]=0;                    pane[i+three-i][j]=t;                    three--;                }            }        }        for(j=0;j<4;j++){//合并数            for(i=3;i>0;i--){                if(pane[i][j]==pane[i-1][j]&&pane[i][j]!=0){                    pane[i][j]=pane[i][j]*2;                    pane[i-1][j]=0;                    int k=i-1;                    for(;k-1>=0&&pane[k-1][j]>0;k--){                        pane[k][j]=pane[k-1][j];                        pane[k-1][j]=0;                    }                }            }        }        random();        showpane();    }    void left(){//向左        int i,j,three;        for(i=0;i<4;i++){//左移动            three=0;            for(j=0;j<4;j++){                if(pane[i][j]>0){                    int t=pane[i][j];                    pane[i][j]=0;                    pane[i][three]=t;                    three++;                }            }        }        for(i=0;i<4;i++){//合并数            for(j=0;j<3;j++){                if(pane[i][j]==pane[i][j+1]&&pane[i][j]!=0){                    pane[i][j]=pane[i][j]*2;                    pane[i][j+1]=0;                    int k=j+1;                    for(;k+1<=3&&pane[i][k+1]>0;k++){                        pane[i][k]=pane[i][k+1];                        pane[i][k+1]=0;                    }                }            }        }        random();        showpane();            }    void right(){//右移        int i,j,three;        for(i=0;i<4;i++){            three=3;            for(j=3;j>=0;j--){//右移动                if(pane[i][j]>0){                    int t=pane[i][j];                    pane[i][j]=0;                    pane[i][j+three-j]=t;                    three--;                }            }        }        for(i=0;i<4;i++){//合并数            for(j=3;j>0;j--){                if(pane[i][j]==pane[i][j-1]&&pane[i][j]!=0){                    pane[i][j]=pane[i][j]*2;                    pane[i][j-1]=0;                    int k=j-1;                    for(;k-1>=0&&pane[i][k-1]>0;k--){                        pane[i][k]=pane[i][k-1];                        pane[i][k-1]=0;                    }                }            }        }        random();        showpane();    }    void random(){//产生随机数        Random random = new Random();        int m=random.nextInt(4);//产生一个0到4（不包括4的随机数）        int n=random.nextInt(4);        for(;pane[m][n]!=0;){            m=random.nextInt(4);//产生一个0到4（不包括4的随机数）            n=random.nextInt(4);        }        pane[m][n]=2;    }    }