From bec2d2a39f43a6bcc6a304808a848f2aab2fcc58 Mon Sep 17 00:00:00 2001 From: CrazyRedMachine Date: Tue, 22 Aug 2023 23:09:53 +0200 Subject: [PATCH] hispeed_auto --- dist/popnhax/popnhax.xml | 7 ++ popnhax/config.h | 2 + popnhax/dllmain.cc | 221 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 230 insertions(+) diff --git a/dist/popnhax/popnhax.xml b/dist/popnhax/popnhax.xml index a0e542d..088ad8e 100644 --- a/dist/popnhax/popnhax.xml +++ b/dist/popnhax/popnhax.xml @@ -43,6 +43,13 @@ 0 + + + 0 + + + 0 + 0 diff --git a/popnhax/config.h b/popnhax/config.h index 234f50f..b64642a 100644 --- a/popnhax/config.h +++ b/popnhax/config.h @@ -43,6 +43,8 @@ struct popnhax_config { uint8_t debounce; bool enhanced_polling_stats; int8_t enhanced_polling_priority; + uint8_t hispeed_auto; + uint16_t hispeed_default_bpm; }; #endif diff --git a/popnhax/dllmain.cc b/popnhax/dllmain.cc index edc27db..d76a254 100644 --- a/popnhax/dllmain.cc +++ b/popnhax/dllmain.cc @@ -164,6 +164,10 @@ PSMAP_MEMBER_REQ(PSMAP_PROPERTY_TYPE_BOOL, struct popnhax_config, enhanced_polli "/popnhax/enhanced_polling_stats") PSMAP_MEMBER_REQ(PSMAP_PROPERTY_TYPE_S8, struct popnhax_config, enhanced_polling_priority, "/popnhax/enhanced_polling_priority") +PSMAP_MEMBER_REQ(PSMAP_PROPERTY_TYPE_U8, struct popnhax_config, hispeed_auto, + "/popnhax/hispeed_auto") +PSMAP_MEMBER_REQ(PSMAP_PROPERTY_TYPE_U16, struct popnhax_config, hispeed_default_bpm, + "/popnhax/hispeed_default_bpm") PSMAP_END enum BufferIndexes { @@ -3974,6 +3978,217 @@ static bool patch_enhanced_polling_stats() return true; } +bool g_bypass_hispeed = false; //bypass target update for mystery bpm and soflan songs +uint32_t g_hispeed_addr = 0; +uint32_t g_target_bpm = 0; +bool g_mystery_bpm = 0; +uint16_t *g_base_bpm_ptr = 0; //will point to g_low_bpm or g_hi_bpm according to mode +uint16_t g_low_bpm = 0; +uint16_t g_hi_bpm = 0; +uint32_t g_hispeed = 0; + +bool g_set_hispeed_addr = false; +void (*real_set_hispeed)(); +void hook_set_hispeed() +{ + g_bypass_hispeed = false; + __asm("mov %0, eax\n":"=r"(g_hispeed_addr): :); + real_set_hispeed(); +} + +/* + * This is called a lot of times: when arriving on option select, and when changing/navigating *any* option + * I'm hooking here to set hi-speed to the target BPM + */ +double g_hispeed_double = 0; +void (*real_read_hispeed)(); +void hook_read_hispeed() +{ + __asm("push eax\n"); + __asm("push ecx\n"); + __asm("push edx\n"); + if ( g_bypass_hispeed ) //bypass for mystery BPM and soflan songs (to avoid hi-speed being locked since target won't change) + __asm("jmp leave_read_hispeed\n"); + + __asm("mov %0, word ptr [ebp+0xA1A]\n":"=a"(g_low_bpm): :); + __asm("mov %0, word ptr [ebp+0xA1C]\n":"=a"(g_hi_bpm): :); + __asm("mov %0, byte ptr [ebp+0xA1E]\n":"=a"(g_mystery_bpm): :); + + g_hispeed_double = (double)g_target_bpm / (double)(*g_base_bpm_ptr/10.0); + g_hispeed = (uint32_t)(g_hispeed_double+0.5); //rounding to nearest + if (g_hispeed > 0x64) g_hispeed = 0x0A; + if (g_hispeed < 0x0A) g_hispeed = 0x64; + + __asm("mov edi, dword ptr[%0]\n"::"m"(g_hispeed)); //fix hispeed initial display on option screen + __asm("mov eax, dword ptr[%0]\n"::"m"(g_hispeed_addr)); + __asm("mov dword ptr[eax], edi\n"); + + __asm("leave_read_hispeed:\n"); + __asm("pop edx\n"); + __asm("pop ecx\n"); + __asm("pop eax\n"); + + real_read_hispeed(); +} + +void (*real_increase_hispeed)(); +void hook_increase_hispeed() +{ + __asm("push eax\n"); + __asm("push edx\n"); + __asm("push ecx\n"); + + if ( g_mystery_bpm || g_low_bpm != g_hi_bpm ) + { + g_bypass_hispeed = true; + __asm("jmp leave_increase_hispeed\n"); + } + + //increase hispeed + __asm("mov ecx, dword ptr[edi]\n"); + __asm("inc ecx\n"); + __asm("cmp ecx, 0x65\n"); + __asm("jb skip_hispeed_rollover_high\n"); + __asm("mov ecx, 0x0A\n"); + __asm("skip_hispeed_rollover_high:\n"); + + //compute resulting bpm using exact same formula as game (base bpm in eax, multiplier in ecx) + __asm("movsx eax, %0\n"::"m"(g_hi_bpm)); + __asm("cwde\n"); + __asm("movsx ecx,cx\n"); + __asm("imul ecx,eax\n"); + __asm("mov eax, 0x66666667\n"); + __asm("imul ecx\n"); + __asm("sar edx,2\n"); + __asm("mov eax,edx\n"); + __asm("shr eax,0x1F\n"); + __asm("add eax,edx\n"); + + __asm("mov %0, eax\n":"=m"(g_target_bpm): :); + + __asm("leave_increase_hispeed:\n"); + __asm("pop ecx\n"); + __asm("pop edx\n"); + __asm("pop eax\n"); + real_increase_hispeed(); +} + +void (*real_decrease_hispeed)(); +void hook_decrease_hispeed() +{ + __asm("push eax\n"); + __asm("push edx\n"); + __asm("push ecx\n"); + if ( g_mystery_bpm || g_low_bpm != g_hi_bpm ) + { + g_bypass_hispeed = true; + __asm("jmp leave_decrease_hispeed\n"); + } + + //decrease hispeed + __asm("mov ecx, dword ptr[edi]\n"); + __asm("dec ecx\n"); + __asm("cmp ecx, 0x0A\n"); + __asm("jge skip_hispeed_rollover_low\n"); + __asm("mov ecx, 0x64\n"); + __asm("skip_hispeed_rollover_low:\n"); + + //compute resulting bpm using exact same formula as game (base bpm in eax, multiplier in ecx) + __asm("movsx eax, %0\n"::"m"(g_hi_bpm)); + __asm("cwde\n"); + __asm("movsx ecx,cx\n"); + __asm("imul ecx,eax\n"); + __asm("mov eax, 0x66666667\n"); + __asm("imul ecx\n"); + __asm("sar edx,2\n"); + __asm("mov eax,edx\n"); + __asm("shr eax,0x1F\n"); + __asm("add eax,edx\n"); + + __asm("mov %0, eax\n":"=m"(g_target_bpm): :); + + __asm("leave_decrease_hispeed:\n"); + __asm("pop ecx\n"); + __asm("pop edx\n"); + __asm("pop eax\n"); + real_decrease_hispeed(); +} + +bool patch_hispeed_auto(uint8_t mode, uint16_t default_bpm) +{ + DWORD dllSize = 0; + char *data = getDllData(g_game_dll_fn, &dllSize); + + g_base_bpm_ptr = &g_hi_bpm; + if (mode == 2) + g_base_bpm_ptr = &g_low_bpm; + + g_target_bpm = default_bpm; + /* retrieve hi-speed address */ + { + int64_t pattern_offset = search(data, dllSize, "\x66\x89\x0C\x07\x0F\xB6\x45\x04", 8, 0); + if (pattern_offset == -1) { + LOG("popnhax: auto hi-speed: cannot find hi-speed address\n"); + return false; + } + + uint64_t patch_addr = (int64_t)data + pattern_offset + 0x04; + + MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_set_hispeed, + (void **)&real_set_hispeed); + } + /* write new hispeed according to target bpm */ + { + int64_t pattern_offset = search(data, dllSize, "\x98\x50\x66\x8B\x85\x1A\x0A\x00\x00\x8B\xCF", 11, 0); + if (pattern_offset == -1) { + LOG("popnhax: auto hi-speed: cannot find hi-speed apply address\n"); + return false; + } + + uint64_t patch_addr = (int64_t)data + pattern_offset - 0x07; + + MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_read_hispeed, + (void **)&real_read_hispeed); + } + /* update target bpm on hispeed increase */ + { + int64_t pattern_offset = search(data, dllSize, "\x66\xFF\x07\x0F\xB7\x07\x66\x83\xF8\x64", 10, 0); + if (pattern_offset == -1) { + LOG("popnhax: auto hi-speed: cannot find hi-speed increase\n"); + return false; + } + + uint64_t patch_addr = (int64_t)data + pattern_offset; + + MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_increase_hispeed, + (void **)&real_increase_hispeed); + } + /* update target bpm on hispeed decrease */ + { + int64_t pattern_offset = search(data, dllSize, "\x66\xFF\x0F\x0F\xB7\x07\x66\x83\xF8\x0A", 10, 0); + if (pattern_offset == -1) { + LOG("popnhax: auto hi-speed: cannot find hi-speed decrease\n"); + return false; + } + + uint64_t patch_addr = (int64_t)data + pattern_offset; + + MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_decrease_hispeed, + (void **)&real_decrease_hispeed); + } + + LOG("popnhax: auto hi-speed enabled"); + if (g_target_bpm != 0) + LOG(" with default %hubpm", g_target_bpm); + if (mode == 1) + LOG(" (higher bpm target)"); + else if (mode == 2) + LOG(" (lower bpm target)"); + + LOG("\n"); + + return true; +} BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) { switch (ul_reason_for_call) { @@ -4255,6 +4470,12 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserv patch_enhanced_polling_stats(); } } + + if (config.hispeed_auto) + { + patch_hispeed_auto(config.hispeed_auto, config.hispeed_default_bpm); + } + #if DEBUG == 1 patch_get_time(); #endif