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fix autohispeed

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CrazyRedMachine 2024-01-02 23:52:49 +01:00
parent ccf3a4c8f8
commit 2535fba8d6
1 changed files with 26 additions and 5 deletions
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31
popnhax/dllmain.cc
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@ -4311,6 +4311,7 @@ uint16_t *g_base_bpm_ptr = 0; //will point to g_low_bpm or g_hi_bpm according to
uint16_t g_low_bpm = 0;
uint16_t g_hi_bpm = 0;
uint16_t g_longest_bpm = 0;
uint16_t g_low_bpm_ebp_offset = 0;
unsigned char *g_chart_addr = 0;
typedef struct chart_chunk_s {
@ -4453,9 +4454,14 @@ void hook_read_hispeed()
__asm("push ecx\n");
__asm("push edx\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): :);
__asm("mov ecx, ebp\n");
__asm("add cx, word ptr [%0]\n"::"a"(&g_low_bpm_ebp_offset));
__asm __volatile__("mov %0, word ptr [ecx]\n":"=a"(g_low_bpm): :);
__asm("add cx, 2\n");
__asm __volatile__("mov %0, word ptr [ecx]\n":"=a"(g_hi_bpm): :);
__asm("add cx, 2\n");
__asm __volatile__("mov %0, byte ptr [ecx]\n":"=a"(g_mystery_bpm): :);
if ( g_bypass_hispeed || g_target_bpm == 0 ) //bypass for mystery BPM and soflan songs (to avoid hi-speed being locked since target won't change)
{
@ -4590,13 +4596,28 @@ bool patch_hispeed_auto(uint8_t mode, uint16_t default_bpm)
}
/* write new hispeed according to target bpm */
{
int64_t pattern_offset = search(data, dllSize, "\x98\x50\x66\x8B\x85", 5, 0);
/* improve compatibility with newer games */
int64_t pattern_offset = search(data, dllSize, "\xEB\x57\x8B\xBC\x24\x50\x01\x00\x00\x66\x8B\x85", 12, 0);
if (pattern_offset == -1) {
LOG("popnhax: auto hi-speed: cannot find chart BPM address offset\n");
return false;
}
uint64_t patch_addr = (int64_t)data + pattern_offset + 0x1C;
g_low_bpm_ebp_offset = *((uint16_t *)(patch_addr));
if (g_low_bpm_ebp_offset != 0x0A1A && g_low_bpm_ebp_offset != 0x0A1E)
{
LOG("popnhax: auto hi-speed: WARNING: unexpected BPM address offset (%hu), might not work\n", g_low_bpm_ebp_offset);
}
pattern_offset = search(data, dllSize, "\x98\x50\x66\x8B\x85", 5, 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;
patch_addr = (int64_t)data + pattern_offset - 0x07;
MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hook_read_hispeed,
(void **)&real_read_hispeed);