问题：读取存档后只有dt（地图）2维数组的不显示

注：+键存档（进入世界后）

不了解具体情况可以试试存储一个世界，然后读档

#include<bits/stdc++.h>
#include<conio.h>
#include<windows.h>

using namespace std;

int dt[150][500];
int pmx1, pmx2, pmy1, pmy2, mx, my; // 屏幕xy和角色xy
int dmgd; // 地面高度
string bb[12]; int bbs[12] = {0}; char id[12]; // 背包与物品ID
int zzx, zzy; // 游戏指针坐标（zzx，zzy）
char jw[20]; int zz_jw; // 键位和键位指针
int tick = 10; // 游戏刻（10tick/s）
int kscd_zz = 0; // 主菜单指针

void bc() {
    system("cls");
    cout << "要等一下存档有点慢，\n看到有存档文件就可以关掉程序了";
    Sleep(10000);

    FILE* fp = fopen("sj.json", "w");
    if (fp == NULL) {
        cout << "无法打开文件进行写入" << endl;
        return;
    }
    for (int i = 0; i < 150; i++) {
        for (int j = 0; j < 500; j++) {
            fprintf(fp, "%d ", dt[i][j]);
        }
        fprintf(fp, "\n");
    }
    fprintf(fp, "%d %d %d %d\n", pmx1, pmx2, mx, my);
    for (int i = 0; i <= 10; i++) {
        fprintf(fp, "%d\n", bbs[i]);
    }
    fclose(fp);
}

void jw_ui() {
    string sc_pm; // 单缓冲存储
    sc_pm += "按键：\n上"; sc_pm += jw[1]; if (zz_jw == 1) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "下"; sc_pm += jw[2]; if (zz_jw == 2) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "左"; sc_pm += jw[3]; if (zz_jw == 3) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "右"; sc_pm += jw[4]; if (zz_jw == 4) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "背包"; sc_pm += jw[5]; if (zz_jw == 5) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "摧毁"; sc_pm += jw[6]; if (zz_jw == 6) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "放置"; sc_pm += jw[7]; if (zz_jw == 7) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "放置确定"; sc_pm += jw[8]; if (zz_jw == 8) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "切换指针模式"; sc_pm += jw[9]; if (zz_jw == 9) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "改按键"; sc_pm += jw[10]; if (zz_jw == 10) { sc_pm += "√\n"; } else { sc_pm += "\n"; };
    sc_pm += "按键查看"; sc_pm += jw[11]; if (zz_jw == 11) { sc_pm += "√\n"; } else { sc_pm += "\n"; };

    system("cls");
    cout << sc_pm; // 输出缓冲
}

void dthz_1() {
    string sc_pm; // 单缓冲存储
    for (int i = pmy1; i < pmy2; i++) {
        for (int j = pmx1; j < pmx2; j++) {
            if (i == my && j == mx) { sc_pm += "@"; }
            else if (dt[i][j] == 0) { sc_pm += " "; }
            else if (dt[i][j] == 1) { sc_pm += id[1]; }
            else if (dt[i][j] == 2) { sc_pm += id[2]; }
            else if (dt[i][j] == 3) { sc_pm += id[3]; }
            else if (dt[i][j] == 4) { sc_pm += id[4]; }
            else if (dt[i][j] == 5) { sc_pm += id[5]; }
            else if (dt[i][j] == 6) { sc_pm += id[6]; }
            else if (dt[i][j] == 7) { sc_pm += id[7]; }
            else if (dt[i][j] == 8) { sc_pm += id[8]; }
            else if (dt[i][j] == 9) { sc_pm += id[9]; }
            else if (dt[i][j] == 10) { sc_pm += id[10]; }
        }
        sc_pm += "\n";
    }
    system("cls");
    cout << sc_pm; // 输出缓冲
    cout << "屏幕最左x:" << pmx1 << "\n屏幕最右x:" << pmx2 << "\n屏幕最上" << 150 - pmy1 << "\n屏幕最下" << 150 - pmy2 << "\n我的坐标" << "(" << mx << "," << 150 - my << ")";
}

void dthz_2() {
    string sc_pm; // 单缓冲存储
    for (int i = pmy1; i < pmy2; i++) {
        for (int j = pmx1; j < pmx2; j++) {
            if (i == zzy && j == zzx) { sc_pm += "."; }
            else if (i == my && j == mx) { sc_pm += "@"; }
            else if (dt[i][j] == 0) { sc_pm += " "; }
            else if (dt[i][j] == 1) { sc_pm += id[1]; }
            else if (dt[i][j] == 2) { sc_pm += id[2]; }
            else if (dt[i][j] == 3) { sc_pm += id[3]; }
            else if (dt[i][j] == 4) { sc_pm += id[4]; }
            else if (dt[i][j] == 5) { sc_pm += id[5]; }
            else if (dt[i][j] == 6) { sc_pm += id[6]; }
            else if (dt[i][j] == 7) { sc_pm += id[7]; }
            else if (dt[i][j] == 8) { sc_pm += id[8]; }
            else if (dt[i][j] == 9) { sc_pm += id[9]; }
            else if (dt[i][j] == 10) { sc_pm += id[10]; }
        }
        sc_pm += "\n";
    }
    system("cls");
    cout << sc_pm; // 输出缓冲
    cout << "屏幕最左x:" << pmx1 << "\n屏幕最右x:" << pmx2 << "\n屏幕最上" << 150 - pmy1 << "\n屏幕最下" << 150 - pmy2 << "\n我的坐标" << "(" << mx << "," << 150 - my << ")";
}

void zl() {
    if (dt[my + 2][mx] == 0 && dt[my + 1][mx] == 0) {
        my++;
        if (pmy2 - my <= 3) {
            pmy1++;
            pmy2 = pmy1 + 9;
        }
        dthz_1();
    }
}

void aj_jc() {
    if (kbhit()) {
        char ch1 = getch();
        if (ch1 == jw[12]) {
            bc();
            return;
        }
        if (ch1 == jw[3]) {
            mx--;
            if ((mx - pmx1) < 10) {
                pmx1--;
                pmx2 = pmx1 + 31;
            }
            if (mx == 0 || dt[my][mx] != 0) {
                mx++;
            }
            else {
                if (pmx1 == 0) {
                    pmx1++;
                    pmx2 = pmx1 + 31;
                }
                dthz_1();
            }
        }
        if (ch1 == jw[4]) {
            mx++;
            if ((pmx2 - mx) < 10) {
                pmx1++;
                pmx2 = pmx1 + 31;
            }
            if (mx == 500 || dt[my][mx] != 0) {
                mx--;
            }
            else {
                if (pmx2 == 501) {
                    pmx1--;
                    pmx2 = pmx1 + 31;
                }
                dthz_1();
            }
        }
        if (ch1 == jw[1]) {
            if (my != 1) {
                if (my - pmy1 == 3) {
                    pmy1--;
                    pmy2 = pmy1 + 9;
                }
                if (dt[my + 1][mx] != 0 && dt[my - 1][mx] == 0) {
                    my--;
                    dthz_1();
                }
            }
        }
        if (ch1 == jw[2]) {
            if (my != 149) {
                if (pmy2 - my == 3) {
                    pmy1++;
                    pmy2 = pmy1 + 9;
                }
                if (dt[my + 1][mx] == 0) {
                    my++;
                    dthz_1();
                }
            }
        }
        if (ch1 == jw[5]) {
            system("cls");
            cout << "背包：\n";
            for (int i = 1; i <= 10; i++) {
                cout << bb[i] << "有：" << bbs[i] << "个\n";
            }
            while (1) {
                if (kbhit()) {
                    char ch2 = getch();
                    if (ch2 != jw[5] && ch2 != jw[11]) {
                        dthz_1();
                        break;
                    }
                }
            }
        }
        if (ch1 == jw[9]) {
            zzx = mx; zzy = my;
            dthz_2();
            while (1) {
                if (kbhit()) {
                    char ch2 = getch();
                    if (ch2 == jw[9]) {
                        dthz_1();
                        break;
                    }
                    if (ch2 == jw[3]) {
                        if (zzx - 1 != mx && zzx != 1) {
                            zzx--;
                            dthz_2();
                        }
                    }
                    if (ch2 == jw[4]) {
                        if (zzx + 1 != mx && zzx != 500) {
                            zzx++;
                            dthz_2();
                        }
                    }
                    if (ch2 == jw[1]) {
                        if (zzy - 1 != my && zzy != 0) {
                            zzy--;
                            dthz_2();
                        }
                    }
                    if (ch2 == jw[2]) {
                        if (zzy + 1 != my && zzy != 149) {
                            zzy++;
                            dthz_2();
                        }
                    }
                    if (ch2 == jw[6]) {
                        if (zzx != mx || zzy != my) {
                            if (dt[zzy][zzx] != 0) {
                                bbs[dt[zzy][zzx]] += 1;
                                dt[zzy][zzx] = 0;
                                dthz_2();
                            }
                        }
                    }
                    if (ch2 == jw[7]) {
                        if (zzx != mx || zzy != my) {
                            if (dt[zzy][zzx] == 0) {
                                int bbzz = 1;
                                system("cls");
                                cout << "背包：\n";
                                for (int i = 1; i <= 10; i++) {
                                    cout << bb[i] << "有：" << bbs[i] << "个";
                                    if (i == bbzz) {
                                        cout << "√\n";
                                    }
                                    else {
                                        cout << "\n";
                                    }
                                }
                                while (1) {
                                    if (kbhit()) {
                                        char ch2 = getch();
                                        if (ch2 == jw[4] || ch2 == jw[2]) {
                                            bbzz++;
                                            if (bbzz > 10) {
                                                bbzz = 1;
                                            }
                                            system("cls");
                                            cout << "背包：\n";
                                            for (int i = 1; i <= 10; i++) {
                                                cout << bb[i] << "有：" << bbs[i] << "个";
                                                if (i == bbzz) {
                                                    cout << "√\n";
                                                }
                                                else {
                                                    cout << "\n";
                                                }
                                            }
                                        }
                                        if (ch2 == jw[1] || ch2 == jw[3]) {
                                            bbzz--;
                                            if (bbzz < 1) {
                                                bbzz = 10;
                                            }
                                            system("cls");
                                            cout << "背包：\n";
                                            for (int i = 1; i <= 10; i++) {
                                                cout << bb[i] << "有：" << bbs[i] << "个";
                                                if (i == bbzz) {
                                                    cout << "√\n";
                                                }
                                                else {
                                                    cout << "\n";
                                                }
                                            }
                                        }
                                        if (ch2 == jw[8]) {
                                            if (bbs[bbzz] - 1 >= 0) {
                                                bbs[bbzz]--;
                                                dt[zzy][zzx] = bbzz;
                                                dthz_2();
                                                break;
                                            }
                                        }
                                        if (ch2 == jw[7]) {
                                            dthz_2();
                                            break;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
                Sleep(1000 / tick);
            }
        }
        if (ch1 == jw[11]) {
            system("cls");
            cout << "按键说明：\n正常模式：" << jw[1] << "上 " << jw[2] << "下 " << jw[3] << "左 " << jw[4] << "右 " << jw[9] << "切换指针模式 " << jw[11] << "按键说明 " << jw[5] << "背包 " << jw[10] << "修改键位\n\n指针模式：" << jw[1] << "上 " << jw[2] << "下 " << jw[3] << "左 " << jw[4] << "右 " << jw[9] << "切换正常模式 " << jw[6] << "挖掘 " << jw[7] << "防置（空格确认）（用wsad选择）\n按" << jw[11] << "即可退出哦~~~";
            while (1) {
                if (kbhit()) {
                    char ch2 = getch();
                    if (ch2 == jw[11]) {
                        dthz_1();
                        break;
                    }
                }
            }
        }
        if (ch1 == jw[10]) {
            zz_jw = 1;
            jw_ui();
            while (1) {
                if (kbhit()) {
                    char ch2 = getch();
                    if (ch2 == jw[3] || ch2 == jw[1]) {
                        if (zz_jw != 1) {
                            zz_jw--;
                            jw_ui();
                        }
                    }
                    if (ch2 == jw[4] || ch2 == jw[2]) {
                        if (zz_jw != 11) {
                            zz_jw++;
                            jw_ui();
                        }
                    }
                    if (ch2 == jw[8]) {
                        system("cls");
                        cout << "改成？";
                        while (1) {
                            if (kbhit()) {
                                char ch3 = getch();
                                jw[zz_jw] = ch3;
                                jw_ui();
                                break;
                            }
                        }
                    }
                    if (ch2 == jw[10]) {
                        dthz_1();
                        break;
                    }
                }
            }
        }
    }
}

/*开始菜单*/
void kscd_hz() {
    system("cls");
    cout << "1.新游戏"; if (kscd_zz == 0) { cout << "√"; } cout << endl;
    cout << "2.我要读档！！！"; if (kscd_zz == 1) { cout << "√"; } cout << endl;
    cout << "空格确定" << endl;
}

/*梦开始的地方*/
int main() {
    /*窗口设置*/
    system("mode con cols=36 lines=20");
    system("color 3F");

    cout << "按w，s来选择吧！" << endl; kscd_hz();
    while (1) {
        if (kbhit()) {
            char kscd_ch;
            kscd_ch = getch();
            if (kscd_ch == 'w') {
                kscd_zz--;
                if (kscd_zz == -1) {
                    kscd_zz++;
                }
                kscd_hz();
            }
            if (kscd_ch == 's') {
                kscd_zz++;
                if (kscd_zz == 2) {
                    kscd_zz--;
                }
                kscd_hz();
            }
            if (kscd_ch == ' ') {
                break;
            }
        }
    }

    id[1] = '^'; // ^
    id[2] = '#'; // #
    id[3] = '$'; // $
    id[4] = '%'; // %
    id[5] = '*'; // *
    id[6] = ' '; //
    id[7] = ' '; //
    id[8] = ' '; //
    id[9] = ' '; //
    id[10] = ' '; //

    bb[1] = "泥土";
    bb[2] = "石头";
    bb[3] = "原木";
    bb[4] = "树叶";
    bb[5] = "树苗";
    bb[6] = "未知";
    bb[7] = "未知";
    bb[8] = "未知";
    bb[9] = "未知";
    bb[10] = "未知";

    jw[1] = 'w';
    jw[2] = 's';
    jw[3] = 'a';
    jw[4] = 'd';
    jw[5] = 'b';
    jw[6] = 'j';
    jw[7] = 'k';
    jw[8] = ' ';
    jw[9] = '~';
    jw[10] = '?';
    jw[11] = 'p';
    jw[12] = '+';

    if (kscd_zz == 0) {
        cout << "设置*屏幕最左x（0~469）:";
        cin >> pmx1; pmx2 = pmx1 + 31;
        while (pmx1 <= -1 || pmx2 >= 501) {
            cout << "重输入（0~469）:";
            cin >> pmx1;
            pmx2 = pmx1 + 31;
        }
        cout << "设置*地面高度(145~5):";
        cin >> dmgd;
        while (dmgd < 5 || dmgd > 145) {
            cout << "设置*地面高度(145~5):";
            cin >> dmgd;
        }
        dmgd = 150 - dmgd;
        mx = pmx1 + 16;
        my = dmgd - 1;
        pmy1 = my - 4;
        pmy2 = pmy1 + 9;

        for (int i = 0; i < 150; i++) { // 生成地形与树苗
            for (int j = 0; j < 500; j++) {
                if (i == dmgd) {
                    dt[i][j] = 1;
                }
                else if (i > dmgd) {
                    dt[i][j] = 2;
                }
                else {
                    int sj_tree;
                    sj_tree = rand() % 10;
                    if (sj_tree == 0) {
                        dt[i][j] = 5;
                    }
                    else {
                        dt[i][j] = 0;
                    }
                }
            }
        }
        for (int i = 1; i < 150; i++) { // 移除浮空树苗
            for (int j = 0; j < 500; j++) {
                if (dt[i][j] == 5) {
                    if (dt[i + 1][j] != 1) {
                        dt[i][j] = 0;
                    }
                }
            }
        }

        for (int i = 3; i < 150; i++) { // 树苗拓展生成树
            for (int j = 2; j < 498; j++) {
                if (dt[i][j] == 5) {
                    dt[i][j] = 3; dt[i - 1][j] = 3; dt[i - 2][j] = 3;
                    dt[i - 1][j + 1] = 4; dt[i - 1][j - 1] = 4; dt[i - 1][j + 2] = 4; dt[i - 1][j - 2] = 4;
                    dt[i - 2][j + 1] = 4; dt[i - 2][j - 1] = 4; dt[i - 2][j + 2] = 4; dt[i - 2][j - 2] = 4;
                    dt[i - 3][j + 1] = 4; dt[i - 3][j - 1] = 4; dt[i - 3][j] = 4;
                    j += 3; // 防止连续生成树，但又不破坏树苗
                }
            }
        }
    }
    else if (kscd_zz == 1) {
        FILE* fp = fopen("sj.json", "r");
        if (fp == NULL) {
            cout << "无法打开文件进行读取" << endl;
            return 1;
        }
        for (int i = 0; i < 150; i++) {
            for (int j = 0; j < 500; j++) {
                fscanf(fp, "%d", &dt[i][j]);
            }
        }
        fscanf(fp, "%d %d %d %d", &pmx1, &pmx2, &mx, &my);
        for (int i = 0; i <= 10; i++) {
            fscanf(fp, "%d", &bbs[i]);
        }
        fclose(fp);
    }

    dthz_1();
    cout << "\n@是你哦~\n如果你是新手得话，记得按p查看操作哦~";
    while (1) {
        aj_jc(); // 检测按键
        zl(); // 游戏重力检测
        Sleep(1000 / tick); // 游戏刻
    }
    return 0;
}