项目架构重构，代码整理

src/source/common/TetrisAssets.cpp

@@ -0,0 +1,60 @@
+#include "stdafx.h"
+#include "TetrisAssets.h"
+
+/**
+ * @brief 根据程序所在目录拼出项目资源文件的绝对路径。
+ */
+std::wstring BuildAssetPath(const wchar_t* relativePath)
+{
+    wchar_t modulePath[MAX_PATH] = {};
+    GetModuleFileNameW(nullptr, modulePath, MAX_PATH);
+
+    std::wstring basePath(modulePath);
+    size_t lastSlash = basePath.find_last_of(L"\\/");
+    if (lastSlash != std::wstring::npos)
+    {
+        basePath.resize(lastSlash);
+    }
+
+    std::wstring projectRelative = basePath + L"\\..\\..\\" + relativePath;
+    wchar_t fullPath[MAX_PATH] = {};
+    DWORD result = GetFullPathNameW(projectRelative.c_str(), MAX_PATH, fullPath, nullptr);
+    if (result > 0 && result < MAX_PATH)
+    {
+        return fullPath;
+    }
+
+    return projectRelative;
+}
+
+/**
+ * @brief 根据当前工作目录拼出项目资源文件的绝对路径。
+ */
+std::wstring BuildWorkingDirAssetPath(const wchar_t* relativePath)
+{
+    wchar_t currentDirectory[MAX_PATH] = {};
+    DWORD length = GetCurrentDirectoryW(MAX_PATH, currentDirectory);
+    if (length == 0 || length >= MAX_PATH)
+    {
+        return L"";
+    }
+
+    std::wstring candidate = std::wstring(currentDirectory) + L"\\" + relativePath;
+    wchar_t fullPath[MAX_PATH] = {};
+    DWORD result = GetFullPathNameW(candidate.c_str(), MAX_PATH, fullPath, nullptr);
+    if (result > 0 && result < MAX_PATH)
+    {
+        return fullPath;
+    }
+
+    return candidate;
+}
+
+/**
+ * @brief 判断指定路径是否存在且不是目录。
+ */
+bool FileExists(const std::wstring& path)
+{
+    DWORD attributes = GetFileAttributesW(path.c_str());
+    return attributes != INVALID_FILE_ATTRIBUTES && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0;
+}