Make console UTF-8 & VT sequences work reliably on Windows

CMakeLists.txt

@@ -29,6 +29,7 @@ elseif (MSVC)
     add_compile_options(/Zc:strictStrings-)
     add_compile_options(/MP)
     add_compile_options(/W0)
+    add_compile_options(/utf-8)
 endif ()
 if (NOT MSVC)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error -Wno-c++11-narrowing")

src/dusk/main.cpp

@@ -1,5 +1,24 @@
+#if _WIN32
+#define WINDOWS_LEAN_AND_MEAN
+#include <Windows.h>
+#endif
+
 int game_main(int argc, char* argv[]);
 
+void WindowsSetupConsole();
+
 int main(int argc, char* argv[]) {
+    WindowsSetupConsole();
     return game_main(argc, argv);
 }
+
+void WindowsSetupConsole() {
+#if _WIN32
+    SetConsoleOutputCP(CP_UTF8);
+
+    auto stdout = GetStdHandle(STD_OUTPUT_HANDLE);
+    DWORD consoleMode;
+    GetConsoleMode(stdout, &consoleMode);
+    SetConsoleMode(stdout, consoleMode | ENABLE_PROCESSED_OUTPUT | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
+#endif
+}