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fix N 0 appearing on song select

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CrazyRedMachine 2024-05-02 00:04:07 +02:00
parent b282cfa8f4
commit c3f4f9b93e
1 changed files with 39 additions and 0 deletions
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39
popnhax/dllmain.cc
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@ -1411,6 +1411,43 @@ static bool patch_purelong()
return true;
}
void (*real_normal0)();
void hook_normal0()
{
// getChartDifficulty returns 0xFFFFFFFF when there's no chart,
// but the game assumes there's always a normal chart so there's no check in this case
// and it returns 0... let's fix this
__asm("cmp ebx, 1\n"); //chart id
__asm("jne process_normal0\n");
__asm("cmp eax, 0\n"); //difficulty
__asm("jne process_normal0\n");
__asm("or eax, 0xFFFFFFFF\n");
__asm("process_normal0:\n");
real_normal0();
}
static bool patch_normal0()
{
DWORD dllSize = 0;
char *data = getDllData(g_game_dll_fn, &dllSize);
{
int64_t pattern_offset = search(data, dllSize, "\x83\xC4\x08\x8B\xF8\x89\x7C\x24\x3C", 9, 0);
if (pattern_offset == -1) {
LOG("popnhax: Couldn't find song list display function\n");
return false;
}
uint64_t patch_addr = (int64_t)data + pattern_offset;
MH_CreateHook((LPVOID)patch_addr, (LPVOID)hook_normal0,
(void **)&real_normal0);
}
return true;
}
static bool get_music_limit(uint32_t* limit) {
// avoid doing the search multiple times
static uint32_t music_limit = 0;
@ -1676,6 +1713,8 @@ static bool patch_database() {
patch_purelong();
patch_normal0();
{
int64_t pattern_offset = search(data, dllSize, "\x8D\x44\x24\x10\x88\x4C\x24\x10\x88\x5C\x24\x11\x8D\x50\x01", 15, 0);
if (pattern_offset != -1) {