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spice2x.github.io/src/spice2x/games/ddr/ddr.cpp
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bicarus 6bc1357d6a ddr: add support for analog axis-only pads and handle left+right / up+down input (#659) 
## Link to GitHub Issue or related Pull Request, if one exists
n/a

## Description of change
Some crappy DDR soft mats (either USB-based or console pads with crappy
adapters that lack a dedicated "DDR pad mode") use X and Y analog axis
for arrows, which means they cannot cleanly report Up+Down or Left+Right
input.

According to some ancient Stepmania code, a lot of these report a middle
value (value between center and right, for example, for left+right).
Borrow this hack from Stepmania and implement it in spice as analog
input for DDR.

Also, for rawinput/xinput automatic bind scenario, update the logic so
that face buttons are always detected before analog axis / dpads for
consistency. This would help with binding any DDR pads that
simultaneously input face buttons / dpad / analog axis, so that we can
prefer face buttons when detected.

## Testing
I don't have any soft mats that have this, but it was tested with an
xbox controller.
2026-04-27 20:17:54 -07:00

341 lines
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#include "ddr.h"
#include "acioemu/handle.h"
#include "avs/game.h"
#include "hooks/avshook.h"
#include "hooks/cfgmgr32hook.h"
#include "hooks/devicehook.h"
#include "hooks/setupapihook.h"
#include "hooks/sleephook.h"
#include "hooks/input/dinput8/hook.h"
#include "util/deferlog.h"
#include "util/utils.h"
#include "util/libutils.h"
#include "util/fileutils.h"
#include "util/detour.h"
#include "cfg/configurator.h"
#include "io.h"
#include "p3io/foot.h"
#include "p3io/p3io.h"
#include "p3io/sate.h"
#include "p3io/usbmem.h"
#include "p4io/p4io.h"
#include <cstring>
using namespace acioemu;
namespace games::ddr {
// settings
bool SDMODE = false;
bool NO_CODEC_REGISTRATION = false;
uint8_t DDR_TAPELEDS[TAPELED_DEVICE_COUNT][50][3] {};
static decltype(SendMessage) *SendMessage_real = nullptr;
static SHORT WINAPI GetAsyncKeyState_hook(int vKey) {
// disable debug keys
return 0;
}
static LRESULT WINAPI SendMessage_hook(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) {
// ignore broadcasts
if (hWnd == HWND_BROADCAST) {
return 1;
}
// fallback
return SendMessage_real(hWnd, Msg, wParam, lParam);
}
bool contains_only_ascii(const std::wstring& str) {
for (auto c: str) {
if (c > 127) {
return false;
}
}
return true;
}
DDRGame::DDRGame() : Game("Dance Dance Revolution") {
}
void DDRGame::register_codecs() {
// find where spice.exe / spice64.exe is located
const auto &spice_bin_path = libutils::module_file_name(nullptr).parent_path();
// find the com directory
std::filesystem::path dir = "";
if (MODULE_PATH == spice_bin_path) {
// try: \com
dir = spice_bin_path / "com";
} else {
// try: modules\..\com
dir = MODULE_PATH / ".." / "com";
}
if (fileutils::dir_exists(dir)) {
log_info("ddr", "looking for codecs in this directory: {}", dir);
} else {
log_info("ddr", "codecs directory not found: {}", dir);
return;
}
for (const auto &file : std::filesystem::directory_iterator(dir)) {
const auto &filename = file.path().filename();
const auto extension = filename.extension().wstring();
if (wcsicmp(extension.c_str(), L".dll") != 0) {
continue;
}
log_info("ddr", "found DLL: {}, size: {} bytes", filename, file.file_size());
if (filename == "k-clvsd.dll" || filename.wstring().find(L"xactengine") == 0) {
const std::wstring wcmd = L"regsvr32.exe /s \"" + file.path().wstring() + L"\"";
const std::string cmd = fmt::format("regsvr32.exe /s \"{}\"", file.path());
int result = 0;
std::thread t([wcmd, &result]() {
result = _wsystem(wcmd.c_str());
});
t.join();
if (result == 0) {
log_info("ddr", "`{}` returned {}", cmd, result);
} else {
log_warning("ddr", "`{}` failed, returned {}", cmd, result);
deferredlogs::defer_error_messages({
"DDR codec registration failure",
fmt::format(" {} failed to register with error {}", filename, result)});
}
static std::once_flag printed;
std::call_once(printed, [file]() {
if (!contains_only_ascii(file.path().wstring())) {
log_warning(
"ddr",
"BAD PATH ERROR\n\n"
"!!! !!!\n"
"!!! filesystem path to codec contains non-ASCII characters! !!!\n"
"!!! this may cause failures when loading codecs, and !!!\n"
"!!! potentially leading the game to crash! !!!\n"
"!!! !!!\n"
);
deferredlogs::defer_error_messages({
"path to DDR codecs contain non-Latin characters",
" this may lead to movies not playing, white screen issue,",
" game hanging, or potentially a crash",
" move the game to a directory that does not contain non-Latin characters",
" if you encountered any issues"});
}
});
}
}
}
void DDRGame::pre_attach() {
if (!cfg::CONFIGURATOR_STANDALONE && avs::game::is_model("TDX")) {
log_warning(
"ddr",
"BAD MODEL NAME ERROR\n\n\n"
"!!! model name set to TDX, this is WRONG and will break your game !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! spice2x does not yet support TDX, use MDX instead. !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! model name set to TDX, this is WRONG and will break your game !!!\n\n\n"
);
log_fatal("ddr", "BAD MODEL NAME ERROR - TDX specified, should be MDX instead");
}
if (!cfg::CONFIGURATOR_STANDALONE && avs::game::DEST[0] == 'U') {
log_warning(
"ddr",
"U-REGION WARNING\n\n\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! <dest> is set to U region !!!\n"
"!!! !!!\n"
"!!! While this is legal, unless you have compatible data, this !!!\n"
"!!! will most likely crash your game or fail to boot. !!!\n"
"!!! !!!\n"
"!!! It is recommended that you stick with J region. !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! !!!\n"
"!!! !!!\n\n\n"
);
}
if (!cfg::CONFIGURATOR_STANDALONE) {
if (!NO_CODEC_REGISTRATION) {
this->register_codecs();
} else {
log_warning(
"ddr",
"skipping codec registration (-ddrnocodec), "
"game may crash if you didn't register codecs before launching the game");
}
}
}
void DDRGame::attach() {
Game::attach();
// dinput hook on this dll since the game dll doesn't load it
auto game_mdx = libutils::try_library(MODULE_PATH / "gamemdx.dll");
hooks::input::dinput8::init(game_mdx);
// init device hook
devicehook_init();
// init SETUP API
setupapihook_init(avs::game::DLL_INSTANCE);
// DDR ACE actually uses another DLL for things
if (game_mdx != nullptr) {
setupapihook_init(game_mdx);
}
// add fake devices
if (avs::game::DLL_NAME == "arkmdxbio2.dll") {
devicehook_add(new acioemu::ACIOHandle(L"COM1"));
if (avs::game::SPEC[0] == 'I') {
// settings (bio2)
SETUPAPI_SETTINGS settingsbio2 {};
const char property2[] = "BIO2(VIDEO)";
settingsbio2.class_guid[0] = 0x4D36E978;
settingsbio2.class_guid[1] = 0x11CEE325;
settingsbio2.class_guid[2] = 0x8C1BF;
settingsbio2.class_guid[3] = 0x1803E12B;
memcpy(settingsbio2.property_devicedesc, property2, sizeof(property2));
setupapihook_add(settingsbio2);
// cfgmgr (bio2)
CFGMGR32_HOOK_SETTING settingbio2 {};
settingbio2.device_id = "USB\\VID_1CCF&PID_804C";
settingbio2.device_node_id = "USB\\VID_1CCF&PID_804C&MI_00\\?&????????&?&????";
cfgmgr32hook_init(avs::game::DLL_INSTANCE);
cfgmgr32hook_add(settingbio2);
}
} else if (avs::game::DLL_NAME == "arkmdxp4.dll") {
devicehook_add(new DDRP4IOHandle());
} else {
devicehook_add(new DDRFOOTHandle());
devicehook_add(new DDRSATEHandle());
devicehook_add(new DDRUSBMEMHandle());
devicehook_add(new DDRP3IOHandle());
}
// has nothing to do with P3IO, but is enough to trick the game into SD/HD mode
const char *settings_property = ddr::SDMODE ? "Generic Television" : "Generic Monitor";
const char settings_detail[] = R"(\\.\P3IO)";
// settings 1
SETUPAPI_SETTINGS settings1 {};
settings1.class_guid[0] = 0x1FA4A480;
settings1.class_guid[1] = 0x40C7AC60;
settings1.class_guid[2] = 0x7952ACA7;
settings1.class_guid[3] = 0x5A57340F;
memcpy(settings1.property_devicedesc, settings_property, strlen(settings_property) + 1);
memcpy(settings1.interface_detail, settings_detail, sizeof(settings_detail));
// settings 2
SETUPAPI_SETTINGS settings2 {};
settings2.class_guid[0] = 0x4D36E96E;
settings2.class_guid[1] = 0x11CEE325;
settings2.class_guid[2] = 0x8C1BF;
settings2.class_guid[3] = 0x1803E12B;
memcpy(settings2.property_devicedesc, settings_property, strlen(settings_property) + 1);
memcpy(settings2.interface_detail, settings_detail, sizeof(settings_detail));
const char settings_detail_p4io[] = R"(\\.\P4IO)";
// settings p4io
SETUPAPI_SETTINGS settingsp4io {};
settingsp4io.class_guid[0] = 0x8B7250A5;
settingsp4io.class_guid[1] = 0x46C94F61;
settingsp4io.class_guid[2] = 0x68E63A84;
settingsp4io.class_guid[3] = 0x206A4706;
memcpy(settingsp4io.property_devicedesc, settings_property, strlen(settings_property) + 1);
memcpy(settingsp4io.interface_detail, settings_detail_p4io, sizeof(settings_detail_p4io));
// add settings
setupapihook_add(settings1);
setupapihook_add(settings2);
setupapihook_add(settingsp4io);
// misc hooks
detour::iat_try("GetAsyncKeyState", GetAsyncKeyState_hook, avs::game::DLL_INSTANCE);
detour::iat_try("GetKeyState", GetAsyncKeyState_hook, avs::game::DLL_INSTANCE);
SendMessage_real = detour::iat_try("SendMessageW", SendMessage_hook, avs::game::DLL_INSTANCE);
detour::iat_try("SendMessageA", SendMessage_hook, avs::game::DLL_INSTANCE);
}
void DDRGame::detach() {
Game::detach();
// dispose device hook
devicehook_dispose();
}
static void get_analog_xy_axis(Analog &analog, bool &less, bool &more) {
if (!analog.isSet()) {
return;
}
const auto value = GameAPI::Analogs::getState(RI_MGR, analog);
// stepmania linux source:
// https://github.com/stepmania/stepmania/blob/d55acb1ba26f1c5b5e3048d6d6c0bd116625216f/src/arch/InputHandler/InputHandler_Linux_Event.cpp#L410
// for example, value cap with range [0, 255]:
// 127 = 0.498, neutral
// 128 = 0.502, both
// apparently some adapters report values like above; this obviously makes a lot of
// assumptions about bit width of the HID value cap and how the adapter reports
// neutral/both values, but this is good enough for parity with stepmania and its many forks
if (0.5001f < value && value < 0.75f) {
less |= true;
more |= true;
} else if (value <= 0.25f) {
less |= true;
} else if (value >= 0.75f) {
more |= true;
}
}
void get_analog_x_axis(int player, bool &left, bool &right) {
if (player != 1 && player != 2) {
log_fatal("ddr", "invalid player number: {}, expected 1 or 2", player);
return;
}
auto &analog = get_analogs().at(player == 1 ? Analogs::P1_LEFT_RIGHT : Analogs::P2_LEFT_RIGHT);
get_analog_xy_axis(analog, left, right);
}
void get_analog_y_axis(int player, bool &up, bool &down) {
if (player != 1 && player != 2) {
log_fatal("ddr", "invalid player number: {}, expected 1 or 2", player);
return;
}
auto &analog = get_analogs().at(player == 1 ? Analogs::P1_UP_DOWN : Analogs::P2_UP_DOWN);
get_analog_xy_axis(analog, up, down);
}
}
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