From c1c5685e3a3197b4664e99d3e409f852919275a6 Mon Sep 17 00:00:00 2001
From: QCDLZCLW3K <1329-33c17f40@users.noreply.dev.s-ul.net>
Date: Wed, 25 May 2022 09:04:35 +0900
Subject: [PATCH] Force game to always think a debugger isn't present

---
 src/main/ddrhook1/master.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/main/ddrhook1/master.c b/src/main/ddrhook1/master.c
index 022267b..b30836a 100644
--- a/src/main/ddrhook1/master.c
+++ b/src/main/ddrhook1/master.c
@@ -12,8 +12,10 @@
 #include "util/log.h"
 
 static HMODULE(STDCALL *real_LoadLibraryA)(const char *name);
+static BOOL(STDCALL *real_IsDebuggerPresent)();
 
 static HMODULE STDCALL my_LoadLibraryA(const char *name);
+static BOOL STDCALL my_IsDebuggerPresent();
 
 static const struct hook_symbol master_kernel32_syms[] = {
     {
@@ -21,8 +23,23 @@ static const struct hook_symbol master_kernel32_syms[] = {
         .patch = my_LoadLibraryA,
         .link = (void **) &real_LoadLibraryA,
     },
+    {
+        .name = "IsDebuggerPresent",
+        .patch = my_IsDebuggerPresent,
+        .link = (void **) &real_IsDebuggerPresent,
+    },
 };
 
+static BOOL STDCALL my_IsDebuggerPresent()
+{
+    // DDR X has different code paths for when a debugger is attached,
+    // but we want the normal path and not the debugger path.
+    // The biggest noticeable difference is that when a debugger is attached
+    // it will show fway.mpg (a car driving) instead of the sky background
+    // on the menus.
+    return FALSE;
+}
+
 static HMODULE STDCALL my_LoadLibraryA(const char *name)
 {
     HMODULE result;