项目架构重构，代码整理

src/source/app/TetrisMedia.cpp

@@ -0,0 +1,229 @@
+#include "stdafx.h"
+#include "Tetris.h"
+#include "TetrisAppInternal.h"
+#include "TetrisAssets.h"
+#include <shellapi.h>
+#include <string>
+
+static bool bgmPlaying = false;
+static bool bgmUsingMci = false;
+static constexpr const wchar_t* kBgmAlias = L"TereisBgm";
+static constexpr const wchar_t* kReviveVideoAlias = L"TereisReviveVideo";
+
+/**
+ * @brief 尝试通过 MCI 循环播放指定音乐文件。
+ */
+static bool TryPlayMciLoop(const std::wstring& path, bool forceMpegVideo)
+{
+    if (!FileExists(path))
+    {
+        return false;
+    }
+
+    mciSendStringW((std::wstring(L"close ") + kBgmAlias).c_str(), nullptr, 0, nullptr);
+
+    std::wstring openCommand = L"open \"" + path + L"\" ";
+    if (forceMpegVideo)
+    {
+        openCommand += L"type mpegvideo ";
+    }
+    openCommand += L"alias ";
+    openCommand += kBgmAlias;
+
+    if (mciSendStringW(openCommand.c_str(), nullptr, 0, nullptr) != 0)
+    {
+        return false;
+    }
+
+    std::wstring playCommand = std::wstring(L"play ") + kBgmAlias + L" repeat";
+    if (mciSendStringW(playCommand.c_str(), nullptr, 0, nullptr) != 0)
+    {
+        mciSendStringW((std::wstring(L"close ") + kBgmAlias).c_str(), nullptr, 0, nullptr);
+        return false;
+    }
+
+    bgmPlaying = true;
+    bgmUsingMci = true;
+    return true;
+}
+
+/**
+ * @brief 停止背景音乐并释放当前使用的播放设备。
+ */
+void StopBackgroundMusic()
+{
+    if (bgmUsingMci)
+    {
+        mciSendStringW((std::wstring(L"stop ") + kBgmAlias).c_str(), nullptr, 0, nullptr);
+        mciSendStringW((std::wstring(L"close ") + kBgmAlias).c_str(), nullptr, 0, nullptr);
+    }
+    else
+    {
+        PlaySoundW(nullptr, nullptr, 0);
+    }
+
+    bgmPlaying = false;
+    bgmUsingMci = false;
+}
+
+/**
+ * @brief 按资源优先级查找并启动背景音乐。
+ */
+void StartBackgroundMusic()
+{
+    if (!bgmEnabled || bgmPlaying)
+    {
+        return;
+    }
+
+    const wchar_t* bgmWavRelativePath = L"assets\\audio\\bgm.wav";
+    const std::wstring bgmWavCandidates[] =
+    {
+        BuildAssetPath(bgmWavRelativePath),
+        BuildWorkingDirAssetPath(bgmWavRelativePath)
+    };
+
+    for (const std::wstring& candidate : bgmWavCandidates)
+    {
+        if (FileExists(candidate) &&
+            PlaySoundW(candidate.c_str(), nullptr, SND_FILENAME | SND_ASYNC | SND_LOOP))
+        {
+            bgmPlaying = true;
+            bgmUsingMci = false;
+            return;
+        }
+    }
+
+    const wchar_t* oggRelativePath = L"assets\\audio\\bgm.ogg";
+    const std::wstring oggCandidates[] =
+    {
+        BuildAssetPath(oggRelativePath),
+        BuildWorkingDirAssetPath(oggRelativePath)
+    };
+
+    for (const std::wstring& candidate : oggCandidates)
+    {
+        if (TryPlayMciLoop(candidate, false) || TryPlayMciLoop(candidate, true))
+        {
+            return;
+        }
+    }
+
+    const wchar_t* fallbackWavRelativePath = L"assets\\audio\\background.wav";
+    const std::wstring fallbackWavCandidates[] =
+    {
+        BuildAssetPath(fallbackWavRelativePath),
+        BuildWorkingDirAssetPath(fallbackWavRelativePath)
+    };
+
+    for (const std::wstring& candidate : fallbackWavCandidates)
+    {
+        if (FileExists(candidate) &&
+            PlaySoundW(candidate.c_str(), nullptr, SND_FILENAME | SND_ASYNC | SND_LOOP))
+        {
+            bgmPlaying = true;
+            bgmUsingMci = false;
+            return;
+        }
+    }
+
+    bgmEnabled = false;
+}
+
+/**
+ * @brief 切换背景音乐开关并刷新窗口。
+ */
+void ToggleBackgroundMusic(HWND hWnd)
+{
+    bgmEnabled = !bgmEnabled;
+    if (bgmEnabled)
+    {
+        StartBackgroundMusic();
+    }
+    else
+    {
+        StopBackgroundMusic();
+    }
+    InvalidateRect(hWnd, nullptr, FALSE);
+}
+
+/**
+ * @brief 播放复活视频，先尝试 MCI，全屏播放失败时退回系统默认播放器。
+ */
+bool PlayReviveVideo(HWND hWnd)
+{
+    std::wstring videoPath = BuildAssetPath(L"assets\\video\\video.avi");
+    if (!FileExists(videoPath))
+    {
+        videoPath = BuildWorkingDirAssetPath(L"assets\\video\\video.avi");
+    }
+    if (!FileExists(videoPath))
+    {
+        videoPath = BuildAssetPath(L"assets\\video\\video.mp4");
+    }
+    if (!FileExists(videoPath))
+    {
+        videoPath = BuildWorkingDirAssetPath(L"assets\\video\\video.mp4");
+    }
+    if (!FileExists(videoPath))
+    {
+        return false;
+    }
+
+    bool shouldResumeBgm = bgmEnabled;
+    if (bgmPlaying)
+    {
+        StopBackgroundMusic();
+    }
+
+    bool played = false;
+    for (int attempt = 0; attempt < 2 && !played; attempt++)
+    {
+        bool forceMpegVideo = attempt == 0;
+        mciSendStringW((std::wstring(L"close ") + kReviveVideoAlias).c_str(), nullptr, 0, nullptr);
+
+        std::wstring openCommand = L"open \"" + videoPath + L"\" ";
+        if (forceMpegVideo)
+        {
+            openCommand += L"type mpegvideo ";
+        }
+        openCommand += L"alias ";
+        openCommand += kReviveVideoAlias;
+
+        if (mciSendStringW(openCommand.c_str(), nullptr, 0, hWnd) == 0)
+        {
+            std::wstring playCommand = std::wstring(L"play ") + kReviveVideoAlias + L" fullscreen wait";
+            MCIERROR playResult = mciSendStringW(playCommand.c_str(), nullptr, 0, hWnd);
+            mciSendStringW((std::wstring(L"close ") + kReviveVideoAlias).c_str(), nullptr, 0, nullptr);
+            played = playResult == 0;
+        }
+    }
+
+    if (!played)
+    {
+        SHELLEXECUTEINFOW shellInfo = {};
+        shellInfo.cbSize = sizeof(shellInfo);
+        shellInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
+        shellInfo.hwnd = hWnd;
+        shellInfo.lpVerb = L"open";
+        shellInfo.lpFile = videoPath.c_str();
+        shellInfo.nShow = SW_SHOWNORMAL;
+
+        if (ShellExecuteExW(&shellInfo))
+        {
+            if (shellInfo.hProcess != nullptr)
+            {
+                WaitForSingleObject(shellInfo.hProcess, INFINITE);
+                CloseHandle(shellInfo.hProcess);
+            }
+            played = true;
+        }
+    }
+
+    if (shouldResumeBgm)
+    {
+        StartBackgroundMusic();
+    }
+
+    return played;
+}