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mirror of https://github.com/CrazyRedMachine/popnhax.git synced 2024-11-24 06:10:12 +01:00

disable usbPadReadLast and include 5ms debounce

This commit is contained in:
CrazyRedMachine 2023-07-17 14:20:28 +02:00
parent fc11cceeb6
commit 17e536a090

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@ -1908,14 +1908,27 @@ static bool patch_add_to_base_offset(int8_t delta) {
bool g_enhanced_poll_ready = false;
int (*usbPadRead)(uint32_t*);
int (*usbPadReadLast)(unsigned char*);
#if DEBUG >=2
FILE *debug_fp;
#endif
uint32_t g_last_button_state = 0;
int32_t g_button_state[9] = {0};
static unsigned int __stdcall enhanced_polling_proc(void *ctx)
{
#if DEBUG >=2
debug_fp = fopen("polling.log", "w");
#endif
HMODULE hinstLib = GetModuleHandleA("ezusb.dll");
usbPadRead = (int(*)(uint32_t*))GetProcAddress(hinstLib, "?usbPadRead@@YAHPAK@Z");
static uint8_t button_debounce[9] = {0};
/*
usbPadReadLast = (int(*)(unsigned char*)) GetProcAddress(hinstLib, "?usbPadReadLast@@YAHPAE@Z");
uint8_t history[40] = {0};
*/
for (int i=0; i<9; i++)
{
g_button_state[i] = -1;
@ -1926,44 +1939,66 @@ static unsigned int __stdcall enhanced_polling_proc(void *ctx)
Sleep(500);
}
#if DEBUG == 1
uint32_t curr_time = 0;
#if DEBUG >= 1
uint16_t count = 0;
uint32_t currtime = timeGetTime();
uint32_t count_time = timeGetTime();
#endif
while (g_enhanced_poll_ready)
{
#if DEBUG == 1
curr_time = timeGetTime();
#if DEBUG >= 1
if (count == 0)
{
currtime = timeGetTime();
count_time = timeGetTime();
}
#endif
uint32_t pad_bits;
usbPadRead(&pad_bits);
g_last_button_state = pad_bits;
unsigned int buttonState = 0;
buttonState |= (pad_bits >> 8) & 0x1FF;
//usbPadReadLast(history);
#if DEBUG == 2
fprintf(stderr, "history : ");
for (int i = 0; i<40; i++)
{
fprintf(stderr, "%02x ", history[i]);
if (!((i+1)%16)) fprintf(stderr, "\n");
}
fprintf(stderr, "--------------\n");
#endif
int ret = usbPadRead(&pad_bits);
if (ret == 0)
g_last_button_state = pad_bits;
unsigned int buttonState = (g_last_button_state >> 8) & 0x1FF;
for (int i = 0; i < 9; i++)
{
if ( ((buttonState >> i)&1) )
{
if (g_button_state[i] == -1)
{
g_button_state[i] = timeGetTime();
g_button_state[i] = curr_time;
}
button_debounce[i] = 5; // 5ms of debounce on release (since we're forced to stub usbPadReadLast)
}
else
g_button_state[i] = -1;
{
if (button_debounce[i]>0)
{
button_debounce[i]--;
}
if (button_debounce[i] == 0)
g_button_state[i] = -1;
}
}
#if DEBUG == 1
#if DEBUG >= 1
count++;
if (count == 100)
if (count == 1000)
{
fprintf(stderr, "did 100 iterations in %ld milliseconds\n", timeGetTime() - currtime);
fprintf(debug_fp, "did 1000 iterations in %ld milliseconds\n", timeGetTime() - count_time);
count = 0;
}
fflush(debug_fp);
#endif
Sleep(1);
}
@ -1975,15 +2010,17 @@ uint32_t buttonGetMillis(uint8_t button)
if (g_button_state[button] == -1)
return 0;
uint32_t but = g_button_state[button]; //prevent race
uint32_t but = g_button_state[button];
uint32_t curr = timeGetTime();
if (but <= curr)
{
#if DEBUG == 1
fprintf(stderr, "button %d has been pressed for %d millis already, adjust!\n", button, curr-but);
uint32_t res = curr - but;
#if DEBUG >= 2
/*enabling debug here will mess up timing eval */
fprintf(debug_fp, "%ld: buttonGetMillis: button %d : %d millis\n", timeGetTime(), button, res);
fflush(debug_fp);
#endif
return curr - but;
return res;
}
return 0;
@ -1992,15 +2029,14 @@ uint32_t buttonGetMillis(uint8_t button)
uint32_t usbPadReadHook_addr = 0;
int usbPadReadHook(uint32_t *pad_bits)
{
__asm("nop\n");
__asm("nop\n");
/* thread is not running, return real call */
if (!g_enhanced_poll_ready)
return usbPadRead(pad_bits);
g_enhanced_poll_ready = true; // ioboard is ready, game can now poll inputs like crazy
/* return last known input */
*pad_bits = g_last_button_state;
#if DEBUG >= 2
fprintf(debug_fp, "%ld: usbPadReadHook: %x\n", timeGetTime(), *pad_bits);
fflush(debug_fp);
#endif
return 0;
}
@ -2008,7 +2044,6 @@ uint8_t g_poll_index = 0;
uint32_t g_poll_offset = 0;
void (*real_enhanced_poll)();
void patch_enhanced_poll() {
g_enhanced_poll_ready = true; //thread can now start polling inputs like crazy
/* eax contains button being checked [0-8] */
/* esi contains delta about to be evaluated */
/* we need to do esi -= pressed_since[%eax]; to fix the offset accurately */
@ -2070,9 +2105,11 @@ static bool patch_enhanced_polling()
uint32_t as_int = (uint32_t)addr;
LOG("usbPadReadHook address is %x (and pointer to it at %p, %x)\n", usbPadReadHook_addr, &usbPadReadHook_addr, as_int);
uint64_t patch_addr = (int64_t)data + pattern_offset - 0x04; //-06 to be at call, -03 is address
uint64_t patch_addr = (int64_t)data + pattern_offset - 0x04; // usbPadRead function address
patch_memory(patch_addr, (char*)&as_int, 4); // game will call usbPadReadHook instead of real usbPadRead
patch_addr = (int64_t)data + pattern_offset - 20;
patch_memory(patch_addr, (char*)"\x90\x90\x90\x90\x90\x90", 6); // don't call usbPadReadLast
}