/*seeting.h*/
#pragma once
void set_textstyle(LOGFONT& f, int high, int wei); //設(shè)置輸出文字形式
void load_be_bk();      //加載初始背景
void help();        //幫助界面
void decorete(int x);      //初始界面裝飾
void home(int i);        //初始界面
bool exit();        //退出游戲
/*seeting.cpp*/
#include <graphics.h>
#include <conio.h>
#include <ctime>
#include <string.h>
#include "setting.h"

IMAGE be_bk01, be_bk02;
static int i = 0; //裝飾時(shí)計(jì)數(shù)

void set_textstyle(LOGFONT& f, int high, int wei)
{
 gettextstyle(&f);  // 獲取當(dāng)前字體設(shè)置
 f.lfHeight = high;  // 設(shè)置字體高度為 48
 f.lfWeight = wei;
 _tcscpy_s(f.lfFaceName, _T("宋體")); // 設(shè)置字體
 f.lfQuality = ANTIALIASED_QUALITY; // 設(shè)置輸出效果為抗鋸齒 
}

void decorate(int x) //裝飾
{
 if ((x/10) % 2 == 0)
 {
 setlinecolor(RGB(255, 250, 250));
 line(202, 662, 71, 549); line(1157, 403, 1117, 259); 
 setlinecolor(RGB(0, 238, 0));
 line(1004, 413, 1157, 403); line(1188, 504, 1020, 534); line(228, 388, 202, 131);
 setlinecolor(RGB(255, 69, 0));
 line(202, 131, 404, 261); line(471, 493, 228, 388); line(1020, 534, 1307, 563);
 setlinecolor(RGB(0, 245, 255));
 line(1303, 291, 1034, 332); line(66, 373, 437, 600);
 setlinecolor(RGB(191, 62, 255));
 line(1178, 666, 1287, 616); line(404, 261, 202, 131);
 }
 else
 {
 setlinecolor(RGB(255, 218, 185));
 line(1501, 155, 23, 213); line(437, 600, 471, 493); line(1287, 616, 1034, 644);
 setlinecolor(RGB(84, 255, 159));
 line(348, 315, 103, 263); line(269, 606, 39, 697); line(1094, 462, 1004, 413);
 setlinecolor(RGB(30, 144, 255));
 line(71, 549, 269, 606); line(103, 263, 66, 373); line(1307, 563, 1303, 291);
 setlinecolor(RGB(255, 255, 0));
 line(1034, 640, 1188, 504); line(1034, 332, 985, 254); line(39, 697, 348, 315);
 setlinecolor(RGB(255, 0, 255));
 line(1117, 259, 942, 593); line(942, 593, 1178, 666); line(985, 254, 1292, 105);
 }
 setlinecolor(RGB(255, 255, 255));
}

void load_be_bk() //加載幫助界面背景
{
 loadimage(&be_bk01, L"image\\be_bk01.jpg", 1360, 760);
 putimage(0, 0, &be_bk01);
}

void help() //幫助界面
{
 while (1)
 {
 BeginBatchDraw();
 load_be_bk();
 decorate(i);
 roundrect(526, 126, 834, 634, 30, 30);
 roundrect(528, 128, 832, 632, 30, 30);
 roundrect(530, 130, 830, 630, 30, 30);
 LOGFONT f;
 set_textstyle(f, 30, 5);
 settextstyle(&f);  // 設(shè)置字體樣式
 outtextxy(595, 170, _T("游 戲 須 知"));
 line(550, 220, 810, 220);
 set_textstyle(f, 20, 3);
 settextstyle(&f);
 outtextxy(555, 240, _T("① 按下 w a s d 移動飛機(jī)。"));
 outtextxy(555, 280, _T("② 按下 空格 發(fā)射子彈。"));
 outtextxy(555, 320, _T("③ 游戲中按 ESC 暫停。"));
 outtextxy(555, 360, _T("④ 每撞機(jī)一次,生命值減少20,"));
 outtextxy(555, 400, _T(" 通過本關(guān)，生命值恢復(fù)。"));

 set_textstyle(f, 15, 2);
 settextstyle(&f);
 outtextxy(625, 525, _T("按任意鍵返回"));
 line(550, 550, 810, 550);
 outtextxy(605, 570, _T("制作不易，請勿抄襲"));
 outtextxy(605, 600, _T("    ——木筆制作"));
 i++;
 EndBatchDraw();
 Sleep(10);
 if (_kbhit())
 {
 _getch(); break;
 }
 }

}


void home(int i) //初始界面
{
 BeginBatchDraw();
 loadimage(&be_bk02, L"image\\be_bk02.jpg", 1360, 760);
 putimage(0, 0, &be_bk02);
 int m = 465, n = 515; //輸出框上下邊界
 for (int t = 0; t < 4; t++)
 {
 for (int j = 0; j < 4; j++)
 {
 roundrect(1110 + j, m + j, 1300 - j, n - j, 30, 30);
 }
 m += 65;
 n += 65;
 }
 switch (i)
 {
 case 1:
 for (int j = 0; j < 30; j++)
 {
 setlinecolor(RGB(0+j*5, 255 - j * 4, 217 - j * 5));
 line(1120, 475 + j, 1290, 475 + j);
 }
 break;
 case 2:
 for (int j = 0; j < 30; j++)
 {
 setlinecolor(RGB(0 + j * 5, 255 - j * 4, 217 - j * 5));
 line(1120, 540 + j, 1290, 540 + j);
 }
 break;
 case 3:
 for (int j = 0; j < 30; j++)
 {
 setlinecolor(RGB(0 + j * 5, 255 - j * 4, 217 - j * 5));
 line(1120, 605 + j, 1290, 605 + j);
 }
 break;
 case 4:
 for (int j = 0; j < 30; j++)
 {
 setlinecolor(RGB(0 + j * 5, 255 - j * 4, 217 - j * 5));
 line(1120, 670 + j, 1290, 670 + j);
 }
 break;
 }
 setlinecolor(RGB(152, 245, 255));
 LOGFONT f;
 gettextstyle(&f);
 f.lfHeight = 30;
 f.lfWeight = 7;
 _tcscpy_s(f.lfFaceName, _T("隸書")); 
 f.lfQuality = ANTIALIASED_QUALITY;
 settextstyle(&f);
 setbkmode(TRANSPARENT); //透明字體背景
 settextcolor(RGB(255, 0, 0));
 outtextxy(1125, 475, _T("簡單模式(1)"));
 outtextxy(1125, 540, _T("困難模式(2)"));
 outtextxy(1125, 605, _T(" 幫 助 (3) "));
 outtextxy(1125, 670, _T(" 退 出 (4) "));
 f.lfHeight = 70;
 f.lfWeight = 30;
 _tcscpy_s(f.lfFaceName, _T("方正舒體"));
 settextstyle(&f);
 for (int j = 0; j < 5; j++)
 roundrect(950+j, 280+j, 1300-j, 410-j, 50, 50);
 settextcolor(RGB(255, 165, 0));
 outtextxy(960, 300, _T("外星人入侵"));
 EndBatchDraw();
}

bool exit() //退出游戲
{
 loadimage(&be_bk02, L"image\\be_bk02.jpg", 1360, 760);
 putimage(0, 0, &be_bk02);
 LOGFONT f;
 set_textstyle(f, 50, 20);
 settextcolor(RGB(255, 255, 255));
 outtextxy(390, 230, _T("是否要退出游戲?"));
 outtextxy(310, 320, _T("是（回車）否（任意鍵）"));
 FlushBatchDraw();
 char hit = _getch();
 if (hit == 13)
 return 1;
 else
 return 0;
}

/*music.h*/
#pragma once
#include <wtypes.h>
#include <string>
typedef int(__stdcall* w32mci)(const char*, char*, int, int);
typedef int(__stdcall* w32mcierror)(int, char*, int);
using namespace std;

class Mci
{
private:
 HINSTANCE hins;
 w32mci wmci;
 w32mcierror wmcierror;
public:
 Mci();
 ~Mci();
 char buf[256];
 bool send(string command);
};
class AudioClip
{
private:
 Mci mci;
 std::string filename;
 std::string alias;
 int length_ms;
public:
 AudioClip();
 ~AudioClip();
 bool load(const std::string& _filename);
 bool play(int start_ms = 0, int end_ms = -1);
 bool stop();
 bool pause();
 bool unpause();
 int milliseconds();
};

/*music.cpp*/
#include "music.h"
#include<iostream>
#include <string>
#include <cstring>
#include<random>
#include<time.h>
Mci::Mci()
{
 HINSTANCE hins = LoadLibraryA("winmm.dll");
 wmci = (w32mci)GetProcAddress(hins, "mciSendStringA");
 wmcierror = (w32mcierror)GetProcAddress(hins, "mciGetErrorStringA");
}
Mci::~Mci()
{
 FreeLibrary(hins);
}
bool Mci::send(std::string command)
{
 int errcode = wmci(command.c_str(), buf, 254, 0);
 if (errcode)
 {
 wmcierror(errcode, buf, 254);
 return false;
 }
 return true;
}
AudioClip::AudioClip()
{
 //do nothing
}
AudioClip::~AudioClip()
{
 std::string cmd;
 cmd = "close " + alias;
 mci.send(cmd);
}
bool AudioClip::load(const std::string& _filename)
{
 filename = _filename;
 for (unsigned int i = 0; i < filename.length(); i++)
 {
 if (filename[i] == '/')
 filename[i] = '\\';
 }
 alias = "mp3_";
 srand(time(NULL));
 char randstr[6];
 _itoa_s(rand() % 65536, randstr, 10);
 alias.append(randstr);
 std::string cmd;
 cmd = "open " + filename + " alias " + alias;
 if (mci.send(cmd) == false)
 return false;
 cmd = "set " + alias + " time format milliseconds";
 if (mci.send(cmd) == false)
 return false;
 cmd = "status " + alias + " length";
 if (mci.send(cmd) == false)
 return false;
 length_ms = atoi(mci.buf);
 return true;
}
bool AudioClip::play(int start_ms, int end_ms)
{
 if (end_ms == -1) end_ms = length_ms;
 std::string cmd;
 char start_str[16], end_str[16];
 _itoa_s(start_ms, start_str, 10);
 _itoa_s(end_ms, end_str, 10);
 cmd = "play " + alias + " from ";
 cmd.append(start_str);
 cmd.append(" to ");
 cmd.append(end_str);
 return mci.send(cmd);
}
bool AudioClip::stop()
{
 std::string cmd;
 cmd = "stop " + alias;
 if (mci.send(cmd) == false)
 return false;
 cmd = "seek " + alias + " to start";
 if (mci.send(cmd) == false)
 return false;
 return true;
}
bool AudioClip::pause()
{
 std::string cmd;
 cmd = "pause " + alias;
 if (mci.send(cmd) == false)
 return false;
 return true;
}
bool AudioClip::unpause()
{
 std::string cmd;
 cmd = "resume " + alias;
 if (mci.send(cmd) == false)
 return false;
 return true;
}
int AudioClip::milliseconds()
{
 return length_ms;
}

/*alien.h*/
#pragma once
#include <graphics.h>
class Alien
{
public:
 int alien_x = 0, alien_y = -40; //外星人坐標(biāo)
 IMAGE alien01;      //外星人圖片

 void load_alien();   //加載外星人圖片
 void show_alien();   //繪制外星人
 Alien();
};
/*alien.cpp*/
#include <deque>
#include "alien.h"
#include <graphics.h>

void Alien::load_alien()
{
 loadimage(&alien01, L"image\\alien.jpg", 40, 40);
}

void Alien::show_alien()
{
 putimage(alien_x, alien_y, &alien01);
}

Alien::Alien()
{
 load_alien();
}

/*airplane.h*/
#pragma once
class Airplane
{
public:
 int airplane_x = 650, airplane_y = 720; //飛機(jī)初始坐標(biāo)
 IMAGE plane01;       //飛機(jī)圖片
 IMAGE background;      //背景圖
 char key_hit;       //接受按鍵
 int airplane_speed = 10;     //飛船移動速度

 Airplane();  //構(gòu)造函數(shù)
 void load_image();//加載飛機(jī)圖片
 void show_plane();//繪制飛機(jī)圖片
 void show_bg(); //繪制背景圖片
 void key_Down(char hit); //按鍵響應(yīng)
};

/*airplane.cpp*/
#include <graphics.h>
#include <conio.h>
#include <Windows.h>
#include "Airplane.h"

void Airplane::load_image() //加載飛機(jī)圖片和背景圖
{
 loadimage(&plane01, L"image\\plane01.jpg", 60, 40);
 loadimage(&background, L"image\\background01.jpg", 1360, 760);
 rotateimage(&plane01, &plane01, 3.1415926);
}

void Airplane::show_bg() //繪制背景圖
{
 putimage(0, 0, &background);
}

void Airplane::show_plane() //繪制飛機(jī)圖片
{
 putimage(airplane_x, airplane_y, &plane01);
}

void Airplane::key_Down(char hit) //按鍵響應(yīng)
{
 key_hit = hit;
 switch (key_hit)
 {
 case 'w':
 case 'W': if(airplane_y > 500) airplane_y-=airplane_speed; break;
 case 's':
 case 'S': if (airplane_y < 720) airplane_y+= airplane_speed; break;
 case 'a':
 case 'A': if (airplane_x > 0) airplane_x-= airplane_speed; break;
 case 'd':
 case 'D': if (airplane_x < 1300) airplane_x+= airplane_speed; break;
 default: break;
 }
}

Airplane::Airplane()
{ 
 load_image();
 
}

/*bullet.h*/
#pragma once
class Bullet
{
public:
 int bullet_x = 0, bullet_y = 0; //子彈坐標(biāo)
 IMAGE bullet01;     //子彈圖片 
 int bullet_speed = 15;   //子彈速度

 void load_bullet(); //加載子彈圖片
 void show_bullet(); //繪制子彈圖片
 Bullet();
};
/*bullet.cpp*/
#include <graphics.h>
#include "bullet.h"

void Bullet::load_bullet()
{
 loadimage(&bullet01, L"image\\bullet.jpg", 10, 30);
}

void Bullet::show_bullet()
{
 putimage(bullet_x, bullet_y, &bullet01);
}

Bullet::Bullet()
{
 load_bullet();
}

/*launch.h*/
#pragma once

bool choose_all(char key, int &i); //初始選擇界面按鍵處理
void load_music01();     //加載初始界面音樂

/*launch.cpp*/
#include <iostream>
#include <Windows.h>
#include <graphics.h>
#include <conio.h>
#include<cstdlib>
#include <deque>
#include <vector>
#include <ctime>
#include <string>
#include <tchar.h>
#include "airplane.h"
#include "bullet.h"
#include "alien.h"
#include "music.h"
#include "setting.h"
using namespace std;

static int score = 0;  //得分
int tx = 0;     //存儲上次得分信息
static int level = 1;  //關(guān)卡
int player_eneygy = 100; //玩家血量
static int alien_speed = 1; //外星人移動速度
int alien_num = 5;   //初始外星人數(shù)量

AudioClip mu_be01, choose, level13, level46, level710, bulbul, gameov, levelup;   //音樂
void load_music01() //加載初始界面音樂
{
 mu_be01.load("music\\be_bg01.mp3");
 mu_be01.play();
}

void trans_int_ch(wchar_t*& wides, int num) //將數(shù)字轉(zhuǎn)換為能夠被outtextxy輸出的wchar_t型
{
 string temp = to_string(num);
 char s[100];
 int i;
 for (i = 0; i < temp.length(); i++)
 s[i] = temp[i];
 s[i] = '\0';
 int n = MultiByteToWideChar(0, 0, s, -1, NULL, 0);
 wchar_t* wide = new wchar_t[n];
 MultiByteToWideChar(0, 0, s, -1, wide, n);
 wides = wide;
}

void show_score_level()  //顯示得分和關(guān)卡信息
{
 LOGFONT f;
 set_textstyle(f, 20, 5);     //設(shè)置字體信息
 wchar_t* wides1 = NULL;
 trans_int_ch(wides1, score);
 roundrect(1220, 20, 1320, 50, 20, 20); //繪制得分信息框
 rectangle(1215, 15, 1325, 55);
 settextstyle(&f);
 outtextxy(1235, 27, _T("得分: "));
 settextstyle(&f);
 outtextxy(1290, 27, wides1);
 wchar_t* wides2 = NULL;
 trans_int_ch(wides2, level);
 roundrect(1220, 70, 1320, 100, 20, 20); //繪制得分信息框
 rectangle(1215, 65, 1325, 105);
 settextstyle(&f);
 outtextxy(1235, 77, _T("關(guān)卡: "));
 settextstyle(&f);
 outtextxy(1290, 77, wides2);
}

void show_energy() //顯示玩家血量
{
 LOGFONT f;
 set_textstyle(f, 25, 5);
 settextstyle(&f);
 setbkmode(TRANSPARENT); //透明字體背景
 wchar_t* ene = NULL;
 trans_int_ch(ene, player_eneygy);
 switch (player_eneygy)
 {
 case 100:
 setfillcolor(RGB(0, 238, 0));
 rectangle(15, 15, 165, 55);
 solidroundrect(20, 20, 160, 50, 8, 8);
 outtextxy(70, 22, ene);
 break;
 case 80:
 setfillcolor(RGB(192, 255, 62));
 rectangle(15, 15, 165, 55);
 solidroundrect(20, 20, 132, 50, 8, 8);
 outtextxy(70, 22, ene);
 break;
 case 60:
 setfillcolor(RGB(255, 215, 0));
 rectangle(15, 15, 165, 55);
 solidroundrect(20, 20, 104, 50, 8, 8);
 outtextxy(70, 22, ene);
 break;
 case 40:
 setfillcolor(RGB(238, 238, 0));
 rectangle(15, 15, 165, 55);
 solidroundrect(20, 20, 76, 50, 8, 8);
 outtextxy(70, 22, ene);
 break;
 case 20:
 setfillcolor(RGB(255, 0, 0));
 rectangle(15, 15, 165, 55);
 solidroundrect(20, 20, 48, 50, 8, 8);
 outtextxy(70, 22, ene);
 break;
 case 0:
 settextstyle(&f);
 outtextxy(70, 22, ene);
 break;
 default:
 break;
 }
}

void get_Cours(Bullet &b) //獲取鼠標(biāo)信息
{
 HWND hwnd = GetHWnd();  //獲取窗口句柄
 POINT point;  //鼠標(biāo)位置
 GetCursorPos(&point); // 獲取鼠標(biāo)指針位置（屏幕坐標(biāo)）
 ScreenToClient(hwnd, &point); // 將鼠標(biāo)指針位置轉(zhuǎn)換為窗口坐標(biāo)
 if (point.x >= 0 && point.x <= 1360 && point.y >= 500 && point.y <= 760)
 {
 b.bullet_x = point.x;
 b.bullet_y = point.y;
 }
}

void add_alien(deque<Alien>& a) //添加外星人
{
 Alien ali;
 int x = 0;  //作為隨機(jī)數(shù)
 while (1)
 {
 int i = 0;
 x = rand() % 1320;
 for (int k = 0; k < a.size(); k++)
 {
 if (x >= a[k].alien_x && x <= a[k].alien_x + 40)
 i++;
 }
 if (i == 0)
 break;
 else
 i = 0;
 }
 ali.alien_x = x;
 a.push_back(ali);
}

void update_level(deque<Alien>& a) //更新等級和外星人數(shù)量信息
{
 if (score > tx)
 if (score >= 10 && score % 10 == 0)
 {
 level++;
 levelup.load("music\\levelup.mp3");
 levelup.play();
 player_eneygy = 100;
 alien_speed *= 1.5;
 add_alien(a);
 tx = score;
 }
}

void update_energy(Airplane pl, deque<Alien> &a) //更新血量
{
 int i = 0, t = 0;
 for ( ; i < a.size(); i++)
 {
 if ((pl.airplane_x <= a[i].alien_x + 40 && pl.airplane_x + 60 >= a[i].alien_x && pl.airplane_y == a[i].alien_y + 30)||
 (pl.airplane_y <= a[i].alien_y + 40 && pl.airplane_y + 40 >= a[i].alien_y && 
 pl.airplane_x <= a[i].alien_x + 40 && pl.airplane_x + 60 >= a[i].alien_x))
 {
 player_eneygy -= 20;
 t++;
 break;
 }
 }
 if (t != 0)
 {
 a.erase(a.begin() + i);
 add_alien(a);
 }

}

void draw_bu_al(deque<Alien>& a, deque<Bullet>& b)  //更新并繪制外星人和子彈
{
 vector<int> as;
 vector<int> bs;
 for (int i = 0; i < a.size(); i++) //判斷子彈和外星人相撞
 {
 for (int j = 0; j < b.size(); j++)
 {
 if (a[i].alien_x <= b[j].bullet_x + 10 && a[i].alien_x + 40 >= b[j].bullet_x && a[i].alien_y+40 >= b[j].bullet_y)
 {
 bulbul.load("music\\bullet.mp3");
 bulbul.play();
 as.push_back(i);
 bs.push_back(j);
 score++;
 }
 }
 }
 if (!as.empty())
 for (int i = a.size() - 1; i >= 0; i--) //刪除碰撞后的外星人
 {
 int k = as.size() - 1;
 if (i == as[k])
 {
 a.erase(a.begin() + i);
 k--;
 add_alien(a); //每次刪除都新增一個(gè)外星人
 }
 }
 if (!bs.empty())
 for (int i = b.size() - 1; i >= 0; i--)  //刪除碰撞后的子彈
 {
 int k = bs.size() - 1;
 if (i == bs[k])
 {
 b.erase(b.begin() + i);
 k--;
 }
 }
 if(!a.empty())   //刪除飛出屏幕的外星人
 if (a[0].alien_y > 720)
 {
 a.pop_front();
 add_alien(a); //每次刪除都新增一個(gè)外星人
 }
 if (!b.empty())   //刪除飛出屏幕的子彈
 if (b[0].bullet_y < -20)
 b.pop_front();
 for (int i = 0; i < a.size(); i++) //繪制外星人
 {
 a[i].show_alien();
 a[i].alien_y += alien_speed;
 }
 for (int i = 0; i < b.size(); i++) //繪制子彈
 {
 if (b[i].bullet_x > 0 && b[i].bullet_x < 1350 && b[i].bullet_y > -29 && b[i].bullet_y < 730)
 b[i].show_bullet();
 b[i].bullet_y -= b[i].bullet_speed;
 }
}


bool launch(int a) //游戲運(yùn)行
{
 Airplane plane;
 Bullet bul;
 Alien ali;
 if (a == 1)
 {
 alien_speed = 3;
 alien_num = 5;
 plane.airplane_speed = 10;
 level13.load("music\\level01.mp3");
 level13.play();
 }
 if (a == 2)
 {
 alien_speed = 6;
 alien_num = 7;
 plane.airplane_speed = 20;
 level46.load("music\\level03.mp3");
 level46.play();
 }
 deque<Alien> aliens;
 deque<Bullet> bullets;
 ali.alien_x = rand() % 1320;
 aliens.push_back(ali);  //放入頭，便于后續(xù)操作
 
 for (int i = 0; i < alien_num - 1; i++)
 add_alien(aliens);
 char hit;      //記錄按鍵
 plane.show_bg();
 plane.show_plane();
 
 while (1)
 {
 BeginBatchDraw();
 srand((unsigned)time(NULL)); //隨機(jī)數(shù)種子
 plane.show_bg();
 update_energy(plane, aliens);
 show_energy();
 if (player_eneygy == 0)
 {
 gameov.load("music\\gameover.mp3");
 gameov.play();
 LOGFONT f;
 set_textstyle(f, 150, 10);
 settextstyle(&f);
 settextcolor(RGB(255, 255, 255));
 outtextxy(300, 230, _T("GAME OVER"));
 FlushBatchDraw();
 Sleep(1000);
 return 1;
 }
 update_level(aliens);
 show_score_level();
 get_Cours(bul);
 if (_kbhit())
 {
 hit = _getch();
 if (hit == ' ') //判斷是否往隊(duì)列里添加子彈
 {
 bul.bullet_x = plane.airplane_x + 25;
 bul.bullet_y = plane.airplane_y ;
 bullets.push_back(bul);
 }
 else if (hit == 27)
 {
 LOGFONT f;
 set_textstyle(f,40,10);
 settextstyle(&f);
 settextcolor(RGB(255, 255, 255));
 outtextxy(530, 230, _T("是否返回初始界面"));
 outtextxy(490, 320, _T("是（回車）否（任意鍵）"));
 FlushBatchDraw();
 hit = _getch();
 if (hit == 13)
  return 1;

 }
 else
 plane.key_Down(hit);
 }
 draw_bu_al(aliens, bullets);
 FlushBatchDraw();
 
 plane.show_plane();
 EndBatchDraw();
 //cleardevice();
 //Sleep(100);
 system("cls");

 }
 level13.stop();
 level46.stop();
 
}



bool choose_all(char key, int &i) //初始選擇界面按鍵處理
{
 switch (key)
 {
 case 72:
 if (i >= 2)
 {

 choose.load("music\\choose.mp3");
 choose.play();
 i--;
 home(i);
 }
 return 0;
 break;
 case 80:
 if (i <= 3)
 {

 choose.load("music\\choose.mp3");
 choose.play();
 i++;
 home(i);
 }
 return 0;
 break;
 case 13:
 choose.play();
 switch (i)
 {
 case 1:
 mu_be01.stop(); launch(1); return 0;
 break;
 case 2:
 mu_be01.stop(); launch(2); return 0;
 break;
 case 3:
 help(); return 0;
 break;
 case 4:
 if (exit())
 return 1;
 break;
 }
 break;
 default:
 return 0;
 break;
 }
}

/*main.cpp*/
#include <iostream>
#include <graphics.h>
#include <conio.h>
#include<windows.h>
#include<Mmsystem.h>
#include "launch.h"
#include "setting.h"
#pragma comment(lib,"winmm.lib")

using namespace std;

int main()
{
 int i = 1;
 char be_key; //初始界面按鍵輸入
 load_music01();
 initgraph(1360, 760);
 home(1);
 while (1)
 {
 home(i);
 be_key = _getch();
 if (choose_all(be_key, i))
 return 0;
 }

 closegraph();
}