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ddr: add support for analog axis-only pads and handle left+right / up+down input (#659)

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## 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.
This commit is contained in:
bicarus
2026-04-27 20:17:54 -07:00
committed by GitHub
parent 37218e7fe0
commit 6bc1357d6a
10 changed files with 351 additions and 128 deletions
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src/spice2x/acio/mdxf/mdxf.cpp
+17 -5
View File
@@ -2,6 +2,7 @@
#include "mdxf_poll.h"
#include "avs/game.h"
#include "games/ddr/ddr.h"
#include "games/ddr/io.h"
#include "launcher/launcher.h"
#include "rawinput/rawinput.h"
@@ -357,14 +358,17 @@ static bool __cdecl ac_io_mdxf_update_control_status_buffer_impl(int node, MDXFP
// decide on button map
const size_t *button_map = nullptr;
int player = 0;
switch (node) {
case 17:
case 25:
button_map = &buttons_p1[0];
player = 1;
break;
case 18:
case 26:
button_map = &buttons_p2[0];
player = 2;
break;
}
@@ -374,19 +378,27 @@ static bool __cdecl ac_io_mdxf_update_control_status_buffer_impl(int node, MDXFP
if (source == EXTERNAL_POLL) {
// get buttons
auto &buttons = games::ddr::get_buttons();
// get analogs
bool analog_left = false;
bool analog_right = false;
games::ddr::get_analog_x_axis(player, analog_left, analog_right);
bool analog_up = false;
bool analog_down = false;
games::ddr::get_analog_y_axis(player, analog_up, analog_down);
uint8_t up_down = 0;
uint8_t left_right = 0;
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[0]))) {
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[0])) || analog_up) {
up_down |= 0xF0;
}
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[1]))) {
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[1])) || analog_down) {
up_down |= 0x0F;
}
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[2]))) {
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[2])) || analog_left) {
left_right |= 0xF0;
}
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[3]))) {
if (GameAPI::Buttons::getState(RI_MGR, buttons.at(button_map[3])) || analog_right) {
left_right |= 0x0F;
}
current_state = (uint16_t(up_down) << 8) | left_right;