C++ 游戏2048

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```////  header.h//  CPP////  Created by mac on 5/17/16.//  Copyright (c) 2016 Fyang. All rights reserved.//#ifndef HEADER_H_#define HEADER_H_#include <iostream>using namespace std;class G2048 {public:    G2048();    void display();    bool move_up();    bool move_down();    bool move_left();    bool move_right();    void get_newone();private:    int get_score();    bool is_gameover();    void up_swap(size_t, size_t, bool&);    void down_swap(size_t, size_t, bool&);    void left_swap(size_t, size_t, bool&);    void right_swap(size_t, size_t, bool&);    void up_add(bool&);    void down_add(bool&);    void left_add(bool&);    void right_add(bool&);private:    int game[4][4];};G2048::G2048() {    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 0; j < 4; ++j)            game[i][j] = 0;    }    get_newone();}void G2048::display() {    system("cls");    cout << "Game 2048 :\nUse up, down, left and right\nto move numbers! 'q' to quit!\n\n";    cout << "+-------+-------+-------+-------+\n";    cout << "|" << game[0][0] << "\t|" << game[0][1] << "\t|" << game[0][2] << "\t|" << game[0][3] << "\t|\n";    cout << "+-------+-------+-------+-------+\n";    cout << "|" << game[1][0] << "\t|" << game[1][1] << "\t|" << game[1][2] << "\t|" << game[1][3] << "\t|\n";    cout << "+-------+-------+-------+-------+\n";    cout << "|" << game[2][0] << "\t|" << game[2][1] << "\t|" << game[2][2] << "\t|" << game[2][3] << "\t|\n";    cout << "+-------+-------+-------+-------+\n";    cout << "|" << game[3][0] << "\t|" << game[3][1] << "\t|" << game[3][2] << "\t|" << game[3][3] << "\t|\n";    cout << "+-------+-------+-------+-------+\n";    cout << "\tScore : " << get_score() << endl;}int G2048::get_score(){    int score = 0;    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 0; j < 4; ++j) {            int n = game[i][j];            if (n >= 2048)                score += n * 4;            else if (n >= 512)                score += n * 3;            else if (n >= 128)                score += n * 2;            else                score += n;        }    }    return score;}bool G2048::is_gameover() {    for (size_t i = 0; i != 3; ++i)        for (size_t j = 0; j != 3; ++j)            if (game[i][j] == 0)                return false;    return true;}void G2048::get_newone() {    if (is_gameover()) {        cout << "Game OVER!";        return;    }    size_t i = rand() % 4;    size_t j = rand() % 4;    int n = rand() % 4;    if (!game[i][j]) game[i][j] = n ? 2 : 4;    else get_newone();}void G2048::up_swap(size_t x, size_t y, bool& moved) {    auto n = x;    while (n < 4) {        ++n;        if (game[n][y] != 0 && n < 4) {            swap(game[x][y], game[n][y]);            moved = true;            return;        }    }   }void G2048::up_add(bool& moved) {    for (size_t j = 0; j < 4; ++j) {        for (size_t i = 0; i < 4; ++i) {            if (game[i][j] != 0 && game[i][j] == game[i + 1][j]) {                game[i][j] += game[i + 1][j];                game[i + 1][j] = 0;                up_swap(i + 1, j, moved);            }        }    }}bool G2048::move_up() {    bool moved = false;    for (size_t j = 0; j < 4; ++j) {        for (size_t i = 0; i < 4; ++i) {            if (!game[i][j])                up_swap(i, j, moved);        }    }    up_add(moved);    return moved;}void G2048::down_swap(size_t x, size_t y, bool& moved) {    auto n = x;    while (n < 4) {        --n;        if (game[n][y] != 0 && n < 4) {            swap(game[x][y], game[n][y]);            moved = true;            return;        }    }}void G2048::down_add(bool& moved) {    for (size_t j = 0; j < 4; ++j) {        for (size_t i = 3; i < 4 && i >= 0; --i) {            if (game[i][j] != 0 && game[i][j] == game[i - 1][j]) {                game[i][j] += game[i - 1][j];                game[i - 1][j] = 0;                down_swap(i - 1, j, moved);            }        }    }}bool G2048::move_down() {    bool moved = false;    for (size_t j = 0; j < 4; ++j) {        for (size_t i = 3; i < 4 && i >= 0; --i) {            if (!game[i][j])                down_swap(i, j, moved);        }    }    down_add(moved);    return moved;}void G2048::left_swap(size_t x, size_t y, bool& moved) {    auto n = y;    while (n < 4) {        ++n;        if (game[x][n] != 0 && n < 4) {            swap(game[x][y], game[x][n]);            moved = true;            return;        }    }}void G2048::left_add(bool& moved) {    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 0; j < 4; ++j) {            if (game[i][j] != 0 && game[i][j] == game[i][j + 1]) {                game[i][j] += game[i][j + 1];                game[i][j + 1] = 0;                left_swap(i, j + 1, moved);            }        }    }}bool G2048::move_left() {    bool moved = false;    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 0; j < 4; ++j) {            if (!game[i][j])                left_swap(i, j, moved);        }    }    left_add(moved);    return moved;}void G2048::right_swap(size_t x, size_t y, bool& moved) {    auto n = y;    while (n < 4) {        --n;        if (game[x][n] != 0 && n < 4) {            swap(game[x][y], game[x][n]);            moved = true;            return;        }    }}void G2048::right_add(bool& moved) {    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 3; j < 4 && j >= 0; --j) {            if (game[i][j] != 0 && game[i][j] == game[i][j - 1]) {                game[i][j] += game[i][j - 1];                game[i][j - 1] = 0;                right_swap(i, j - 1, moved);            }        }    }}bool G2048::move_right() {    bool moved = false;    for (size_t i = 0; i < 4; ++i) {        for (size_t j = 3; j < 4 && j >= 0; --j) {            if (!game[i][j])                right_swap(i, j, moved);        }    }    right_add(moved);    return moved;}#endif // !

#include "Header.h"#include <conio.h>int main() {    G2048 newgame;    newgame.display();    int choice;    do {        choice = _getch();        switch (choice)        {        case 72:            if (newgame.move_up())                newgame.get_newone();            newgame.display();            break;        case 80:            if (newgame.move_down())                newgame.get_newone();            newgame.display();            break;        case 75:            if (newgame.move_left())                newgame.get_newone();            newgame.display();            break;        case 77:            if (newgame.move_right())                newgame.get_newone();            newgame.display();            break;        default:            break;        }    } while (choice != 'q');    system("pause");    return 0;}

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