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wip convergence value adapt

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CrazyRedMachine 2023-09-20 00:17:18 +02:00
parent e040371c80
commit e6bd21ee25
1 changed files with 64 additions and 0 deletions
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64
popnhax/dllmain.cc
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@ -4838,6 +4838,69 @@ bool patch_survival_spicy()
return true;
}
void (*skip_convergence_value_get_score)();
void (*real_convergence_value_compute)();
void hook_convergence_value_compute()
{
__asm("push eax\n");
__asm("mov eax, dword ptr [eax]\n"); // music id (edi-0x38 or edi-0x34 depending on game)
__asm("cmp ax, 0xBB8\n"); // skip if music id is >= 3000 (cs_omni and user customs)
__asm("jae force_convergence_value\n");
__asm("pop eax\n");
__asm("jmp %0\n"::"m"(real_convergence_value_compute));
__asm("force_convergence_value:\n");
__asm("pop eax\n");
__asm("xor eax, eax\n");
__asm("jmp %0\n"::"m"(skip_convergence_value_get_score));
}
bool patch_db_power_points()
{
DWORD dllSize = 0;
char *data = getDllData(g_game_dll_fn, &dllSize);
int64_t child_fun_loc = 0;
{
int64_t offset = search(data, dllSize, "\x8D\x46\xFF\x83\xF8\x0A\x0F", 7, 0);
if (offset == -1) {
#if DEBUG == 1
LOG("popnhax: patch_db: failed to retrieve struct size and offset\n");
#endif
return false;
}
uint32_t child_fun_rel = *(uint32_t *) ((int64_t)data + offset - 0x04);
child_fun_loc = offset + child_fun_rel;
}
{
int64_t pattern_offset = search(data, 0x40, "\x8d\x74\x01", 3, child_fun_loc);
if (pattern_offset == -1) {
LOG("popnhax: patch_db: failed to retrieve offset from base\n");
g_pfree_song_offset = 0x54; // best effort
return false;
}
g_pfree_song_offset = *(uint8_t *) ((int64_t)data + pattern_offset + 0x03);
}
/* Adapt convergence value computation (skip cs_omni and customs) */
{
int64_t pattern_offset = search(data, dllSize, "\x84\xC0\x75\x11\x8D\x44\x24\x38", 8, 0);
if (pattern_offset == -1) {
LOG("popnhax: patch_db: cannot find convergence value computation\n");
return false;
}
uint64_t patch_addr = (int64_t)data + pattern_offset + 0x08;
skip_convergence_value_get_score = (void(*)()) (patch_addr + 0x05);
MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_convergence_value_compute,
(void **)&real_convergence_value_compute);
}
return true;
}
BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
switch (ul_reason_for_call) {
case DLL_PROCESS_ATTACH: {
@ -5121,6 +5184,7 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserv
if (config.patch_db) {
LOG("popnhax: patching songdb\n");
/* must be called after force_datecode */
patch_db_power_points();
patch_database(config.force_unlocks);
}