Replace WinMain with the main function (#16)

Co-authored-by: Alexander Batalov <alex.batalov@gmail.com>

src/args.cc

@@ -16,32 +16,10 @@ void argsInit(CommandLineArguments* commandLineArguments)
 }
 
 // 0x4E3BA4
-bool argsParse(CommandLineArguments* commandLineArguments, char* commandLine)
+bool argsParse(CommandLineArguments* commandLineArguments, int argc, char* argv[])
 {
     const char* delim = " \t";
 
-    int argc = 0;
-
-    // Get the number of arguments in command line.
-    if (*commandLine != '\0') {
-        char* copy = strdup(commandLine);
-        if (copy == NULL) {
-            argsFree(commandLineArguments);
-            return false;
-        }
-
-        char* tok = strtok(copy, delim);
-        while (tok != NULL) {
-            argc++;
-            tok = strtok(NULL, delim);
-        }
-
-        free(copy);
-    }
-
-    // Make a room for argv[0] - program name.
-    argc++;
-
     commandLineArguments->argc = argc;
     commandLineArguments->argv = (char**)malloc(sizeof(*commandLineArguments->argv) * argc);
     if (commandLineArguments->argv == NULL) {
@@ -74,23 +52,8 @@ bool argsParse(CommandLineArguments* commandLineArguments, char* commandLine)
     }
 
     // Copy arguments from command line into argv.
-    if (*commandLine != '\0') {
-        char* copy = strdup(commandLine);
-        if (copy == NULL) {
-            argsFree(commandLineArguments);
-            return false;
-        }
-
-        int arg = 1;
-
-        char* tok = strtok(copy, delim);
-        while (tok != NULL) {
-            commandLineArguments->argv[arg] = strdup(tok);
-            tok = strtok(NULL, delim);
-            arg++;
-        }
-
-        free(copy);
+    for (int i = 1; i < argc; i++) { // skip argv[0]
+        commandLineArguments->argv[i] = strdup(argv[i]);
     }
 
     return true;

src/args.h

@@ -9,7 +9,7 @@ typedef struct CommandLineArguments {
 } CommandLineArguments;
 
 void argsInit(CommandLineArguments* commandLineArguments);
-bool argsParse(CommandLineArguments* commandLineArguments, char* commandLine);
+bool argsParse(CommandLineArguments* commandLineArguments, int argc, char* argv[]);
 void argsFree(CommandLineArguments* commandLineArguments);
 
 #endif /* ARGS_H */

src/win32.cc

@@ -5,7 +5,7 @@
 #include "main.h"
 #include "window_manager.h"
 
-#include <signal.h>
+#include <SDL.h>
 
 // 0x51E430
 DirectSoundCreateProc* gDirectSoundCreateProc = NULL;
@@ -13,15 +13,6 @@ DirectSoundCreateProc* gDirectSoundCreateProc = NULL;
 // 0x51E434
 HWND gProgramWindow = NULL;
 
-// 0x51E438
-HINSTANCE gInstance = NULL;
-
-// 0x51E43C
-LPSTR gCmdLine = NULL;
-
-// 0x51E440
-int gCmdShow = 0;
-
 // 0x51E444
 bool gProgramIsActive = false;
 
@@ -32,28 +23,19 @@ HANDLE _GNW95_mutex = NULL;
 HMODULE gDSoundDLL = NULL;
 
 // 0x4DE700
-int WINAPI WinMain(_In_ HINSTANCE hInst, _In_opt_ HINSTANCE hPrevInst, _In_ LPSTR lpCmdLine, _In_ int nCmdShow)
+int main(int argc, char* argv[])
 {
     CommandLineArguments args;
 
     _GNW95_mutex = CreateMutexA(0, TRUE, "GNW95MUTEX");
     if (GetLastError() == ERROR_SUCCESS) {
-        ShowCursor(0);
-        if (_InitInstance()) {
+        SDL_ShowCursor(SDL_DISABLE);
         if (_LoadDirectX()) {
-                gInstance = hInst;
-                gCmdLine = lpCmdLine;
-                gCmdShow = nCmdShow;
             argsInit(&args);
-                if (argsParse(&args, lpCmdLine)) {
-                    signal(1, _SignalHandler);
-                    signal(3, _SignalHandler);
-                    signal(5, _SignalHandler);
+            if (argsParse(&args, argc, argv)) {
                 gProgramIsActive = true;
                 falloutMain(args.argc, args.argv);
                 argsFree(&args);
-                    return 1;
-                }
             }
         }
         CloseHandle(_GNW95_mutex);
@@ -61,32 +43,6 @@ int WINAPI WinMain(_In_ HINSTANCE hInst, _In_opt_ HINSTANCE hPrevInst, _In_ LPST
     return 0;
 }
 
-// 0x4DE864
-bool _InitInstance()
-{
-    OSVERSIONINFOA osvi;
-    bool result;
-
-    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
-
-#pragma warning(suppress : 4996 28159)
-    if (!GetVersionExA(&osvi)) {
-        return true;
-    }
-
-    result = true;
-
-    if (osvi.dwPlatformId == 0 || osvi.dwPlatformId == 2 && osvi.dwMajorVersion < 4) {
-        result = false;
-    }
-
-    if (!result) {
-        MessageBoxA(NULL, "This program requires Windows 95 or Windows NT version 4.0 or greater.", "Wrong Windows Version", MB_ICONSTOP);
-    }
-
-    return result;
-}
-
 // 0x4DE8D0
 bool _LoadDirectX()
 {
@@ -107,7 +63,7 @@ bool _LoadDirectX()
 err:
     _UnloadDirectX();
     
-    MessageBoxA(NULL, "This program requires Windows 95 with DirectX 3.0a or later or Windows NT version 4.0 with Service Pack 3 or greater.", "Could not load DirectX", MB_ICONSTOP);
+    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Could not load DirectX", "This program requires DirectX 3.0a or later.", NULL);
 
     return false;
 }
@@ -120,9 +76,3 @@ void _UnloadDirectX(void)
         gDSoundDLL = NULL;
     }
 }
-
-// 0x4DE9F4
-void _SignalHandler(int sig)
-{
-    // TODO: Incomplete.
-}

src/win32.h

@@ -15,16 +15,11 @@ typedef HRESULT(__stdcall DirectSoundCreateProc)(GUID*, LPDIRECTSOUND*, IUnknown
 
 extern DirectSoundCreateProc* gDirectSoundCreateProc;
 extern HWND gProgramWindow;
-extern HINSTANCE gInstance;
-extern LPSTR gCmdLine;
-extern int gCmdShow;
 extern bool gProgramIsActive;
 extern HANDLE _GNW95_mutex;
 extern HMODULE gDSoundDLL;
 
-bool _InitInstance();
 bool _LoadDirectX();
 void _UnloadDirectX(void);
-void _SignalHandler(int sig);
 
 #endif /* WIN32_H */

src/window_manager.cc

@@ -10,6 +10,8 @@
 #include "text_font.h"
 #include "window_manager_private.h"
 
+#include <SDL.h>
+
 static_assert(sizeof(struc_177) == 572, "wrong size");
 static_assert(sizeof(Window) == 68, "wrong size");
 static_assert(sizeof(Button) == 124, "wrong size");
@@ -1242,8 +1244,8 @@ void programWindowSetTitle(const char* title)
     strncpy(gProgramWindowTitle, title, 256);
     gProgramWindowTitle[256 - 1] = '\0';
 
-    if (gProgramWindow != NULL) {
-        SetWindowTextA(gProgramWindow, gProgramWindowTitle);
+    if (gSdlWindow != nullptr) {
+        SDL_SetWindowTitle(gSdlWindow, gProgramWindowTitle);
     }
 }
 
@@ -1296,12 +1298,14 @@ int paletteCloseFileImpl(int fd)
 // 0x4D8200
 bool showMesageBox(const char* text)
 {
-    HCURSOR cursor = LoadCursorA(gInstance, MAKEINTRESOURCEA(IDC_ARROW));
-    HCURSOR prev = SetCursor(cursor);
-    ShowCursor(TRUE);
-    MessageBoxA(NULL, text, NULL, MB_ICONSTOP);
-    ShowCursor(FALSE);
-    SetCursor(prev);
+    SDL_Cursor* prev = SDL_GetCursor();
+    SDL_Cursor* cursor = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
+    SDL_SetCursor(cursor);
+    SDL_ShowCursor(SDL_ENABLE);
+    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, NULL, text, NULL);
+    SDL_ShowCursor(SDL_DISABLE);
+    SDL_SetCursor(prev);
+    SDL_FreeCursor(cursor);
     return true;
 }
 

third_party/sdl2/CMakeLists.txt

@@ -20,4 +20,4 @@ endif()
 
 add_subdirectory(${sdl2_SOURCE_DIR} ${sdl2_BINARY_DIR} EXCLUDE_FROM_ALL)
 target_include_directories(fallout2-ce PUBLIC ${sdl2_SOURCE_DIR} ${sdl2_BINARY_DIR})
-target_link_libraries(fallout2-ce SDL2-static)
+target_link_libraries(fallout2-ce SDL2-static SDL2::SDL2main)