From a2f7e37d8adf2047e1f3b0ea1227ac9d51514783 Mon Sep 17 00:00:00 2001
From: Matthew Wozniak <me@woz.blue>
Date: Fri, 1 Nov 2024 13:47:31 -0400
Subject: play demo using the demoplayer object

---
 main.c | 44 ++++++++++++++++++++++++++++++++++----------
 1 file changed, 34 insertions(+), 10 deletions(-)

(limited to 'main.c')

diff --git a/main.c b/main.c
index e16786e..376c615 100644
--- a/main.c
+++ b/main.c
@@ -10,20 +10,38 @@
 #define WIN32_LEAN_AND_MEAN
 #include <Windows.h>
 
+void (*orig_cbuf_addtext)(char *);
+void hook_cbuf_addtext(char *str) {
+	orig_cbuf_addtext(str);
+	info("%s", str);
+	// this is the last thing that happens when the game is opened
+	if (!strcmp(str, "exec modsettings.cfg mod\n")) {
+		demoplayer->vt->start_playback(demoplayer, "demo.dem", false);
+	}
+}
+
+char *cmdline;
+char WINAPI *hook_GetCommandLineA(void) {
+	return cmdline;
+}
+
 void *(WINAPI *orig_LoadLibraryExA)(const char *, void *, int);
 void WINAPI *hook_LoadLibraryExA(const char *filename, void *hfile, int flags) {
+	// if the dll is already loaded, don't run our code again
+	if (os_dlhandle(filename))
+		return orig_LoadLibraryExA(filename, hfile, flags);
 	void *ret = orig_LoadLibraryExA(filename, hfile, flags);
 	if (!ret) return ret;
-	// cut down to basename
+	// cut down to basename for display
 	const char *basename = filename;
 	for (const char *p = filename; *p; p++)
 		if (*p == '\\') basename = p + 1;
 	info("loaded %s", basename);
 
-	// last dll to load
-	if (!strcmp(basename, "serverbrowser.dll")) {
-		api_init();
-		// TODO: figure out hooks that run AFTER valve.rc is called
+	if (!strcmp(basename, "engine.dll")) {
+		if (!api_init()) die("couldn't get apis");
+		orig_cbuf_addtext = (void (*)(char *))
+			hook_inline((void *)cbuf_addtext, (void *)hook_cbuf_addtext);
 	}
 	return ret;
 }
@@ -31,19 +49,25 @@ void WINAPI *hook_LoadLibraryExA(const char *filename, void *hfile, int flags) {
 typedef int (*LauncherMain_t)(void *instance, void *prev_inst, char *cmdline,
 		int cmd_show);
 
-int main(int argc, char **argv) {
+int main(/* int argc, char **argv */) {
 	SetDllDirectoryA("bin/");
 
-	void *launcher_dll = os_dlopen("launcher");
-	LauncherMain_t launcher_main =
-		(LauncherMain_t)os_dlsym(launcher_dll, "LauncherMain");
+	// TODO: make this changeable by the user
+	cmdline = "hl2.exe -console -w 1280 -h 720 -window -high -dxlevel 95";
 
 	hook_init();
 	orig_LoadLibraryExA = (typeof(orig_LoadLibraryExA))hook_dllapi("kernel32",
 			"LoadLibraryExA", (void *)hook_LoadLibraryExA);
+	hook_dllapi("kernel32", "GetCommandLineA", (void *)hook_GetCommandLineA);
+
+	info("GetCommandLineA() = %s", GetCommandLineA()); 
+
+	void *launcher_dll = os_dlopen("launcher");
+	LauncherMain_t launcher_main =
+		(LauncherMain_t)os_dlsym(launcher_dll, "LauncherMain");
 
 	if (!launcher_main) die("couldn't open launcher");
-	launcher_main(NULL, NULL, NULL, 0);
+	launcher_main(NULL, NULL, cmdline, 0);
 }
 
 // vi: sw=4 ts=4 noet tw=80 cc=80
-- 
cgit v1.2.3-54-g00ecf