chouka/solutions/lesson_gui_6.cpp

// =====================================================================
// 第 6 课：完整抽卡游戏 —— 老师完整答案
// =====================================================================

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Box.H>
#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <string>

// ===== 卡片数据 =====
std::string normal_cards[5] = {
    "小火龙", "水跃鱼", "绿草龟", "小电鼠", "土拨仔"
};
std::string rare_cards[5] = {
    "烈焰飞龙", "冰霜之狼", "暗影豹", "风暴鹰", "水晶鹿"
};
std::string super_cards[3] = {
    "雷霆神龙", "凤凰王", "深海巨兽"
};

// ===== 游戏状态 =====
int coins = 500;
int total_normal = 0;
int total_rare = 0;
int total_super = 0;

// ===== 全局控件 =====
Fl_Window *window;
Fl_Box *result_box;
Fl_Box *stats_box;
Fl_Box *coins_box;

void update_coins_display() {
    char buf[50];
    std::sprintf(buf, "金币：%d", coins);
    coins_box->label(buf);
    if (coins < 100) {
        coins_box->labelcolor(FL_RED);
    } else {
        coins_box->labelcolor(fl_rgb_color(0, 100, 0));
    }
}

void update_stats_display() {
    char buf[100];
    std::sprintf(buf, "累计：普通 %d  |  稀有 %d  |  超稀有 %d",
                 total_normal, total_rare, total_super);
    stats_box->label(buf);
}

// 抽一张卡：返回卡名，rare_level 引用参数表示稀有度（0/1/2）
std::string get_card(int &rare_level) {
    int r = std::rand() % 100;
    if (r < 70) {
        rare_level = 0;
        total_normal++;
        return normal_cards[std::rand() % 5];
    } else if (r < 95) {
        rare_level = 1;
        total_rare++;
        return rare_cards[std::rand() % 5];
    } else {
        rare_level = 2;
        total_super++;
        return super_cards[std::rand() % 3];
    }
}

void draw_one_callback(Fl_Widget *w, void *data) {
    if (coins < 10) {
        result_box->label("金币不够！单抽需要 10 金币。\n点\"重置\"恢复金币。");
        result_box->labelcolor(FL_RED);
        result_box->labelsize(16);
        return;
    }

    coins -= 10;
    update_coins_display();

    int level = 0;
    std::string card = get_card(level);

    std::string result;
    if (level == 0) {
        result = "☆ 普通卡 ☆\n     " + card;
        result_box->labelcolor(fl_rgb_color(128, 128, 128));
    } else if (level == 1) {
        result = "★ 稀有卡 ★\n     " + card;
        result_box->labelcolor(FL_BLUE);
    } else {
        result = "★★★ 超稀有卡！！ ★★★\n     " + card;
        result_box->labelcolor(FL_RED);
    }

    result_box->labelsize(24);
    result_box->label(result.c_str());
    update_stats_display();
}

void draw_ten_callback(Fl_Widget *w, void *data) {
    if (coins < 100) {
        result_box->label("金币不够！十连抽需要 100 金币。\n点\"重置\"恢复金币。");
        result_box->labelcolor(FL_RED);
        result_box->labelsize(16);
        return;
    }

    coins -= 100;
    update_coins_display();

    std::string all = "";
    int ten_normal = 0, ten_rare = 0, ten_super = 0;

    for (int i = 1; i <= 10; i++) {
        int level = 0;
        std::string card = get_card(level);

        all += "第" + std::to_string(i) + "抽：";
        if (level == 0) {
            all += "普通  " + card;
            ten_normal++;
        } else if (level == 1) {
            all += "★稀有  " + card;
            ten_rare++;
        } else {
            all += "★★★超稀有  " + card;
            ten_super++;
        }
        all += "\n";
    }

    char summary[80];
    std::sprintf(summary, "\n--- 本次：普通%d  稀有%d  超稀有%d ---",
                 ten_normal, ten_rare, ten_super);
    all += summary;

    result_box->labelsize(14);
    result_box->label(all.c_str());
    result_box->labelcolor(FL_BLACK);
    update_stats_display();
}

void reset_callback(Fl_Widget *w, void *data) {
    coins = 500;
    total_normal = 0;
    total_rare = 0;
    total_super = 0;
    update_coins_display();
    update_stats_display();
    result_box->labelsize(20);
    result_box->label("游戏已重置！\n金币回到 500，统计清零。\n开始抽卡吧！");
    result_box->labelcolor(FL_BLACK);
}

void quit_callback(Fl_Widget *w, void *data) {
    window->hide();
}

int main() {
    std::srand(std::time(nullptr));

    window = new Fl_Window(440, 560, "抽卡大冒险");

    Fl_Button *btn1 = new Fl_Button(30, 15, 150, 50, "单抽\n(10金币)");
    btn1->labelsize(16);
    btn1->callback(draw_one_callback);

    Fl_Button *btn10 = new Fl_Button(260, 15, 150, 50, "十连抽\n(100金币)");
    btn10->labelsize(16);
    btn10->callback(draw_ten_callback);

    coins_box = new Fl_Box(30, 75, 380, 30, "");
    coins_box->labelsize(20);
    coins_box->labelfont(FL_BOLD);
    update_coins_display();

    result_box = new Fl_Box(20, 115, 400, 270, "欢迎来到抽卡大冒险！\n点击上方按钮开始抽卡～");
    result_box->labelsize(20);
    result_box->align(FL_ALIGN_TOP | FL_ALIGN_LEFT);
    result_box->box(FL_DOWN_BOX);

    stats_box = new Fl_Box(20, 400, 400, 30, "");
    stats_box->labelsize(14);
    update_stats_display();

    Fl_Button *btn_reset = new Fl_Button(100, 450, 100, 40, "重置");
    btn_reset->callback(reset_callback);

    Fl_Button *btn_quit = new Fl_Button(240, 450, 100, 40, "退出");
    btn_quit->callback(quit_callback);

    window->end();
    window->show();
    return Fl::run();
}