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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
Download Patch File Download Diff File Expand all files Collapse all files
src/spice2x/games/ddr/p3io/p3io.cpp
+49 -1
View File
@@ -498,32 +498,80 @@ int games::ddr::DDRP3IOHandle::device_io(
// shift table
static size_t shift_table[] = {
30, 28, 29, 8, 9, 10, 11, 12, 24, 25, 14, 15, 16, 17, 18, 19, 20, 26, 27, 22, 23
30, 28, 29, // service, test, coin
8, // p1 start
9, 10, 11, 12, // p1 panel
24, 25, 14, 15, // p1 menu
16, // p2 start
17, 18, 19, 20, // p2 panel
26, 27, 22, 23 // p2 menu
};
static size_t button_table[] = {
Buttons::SERVICE,
Buttons::TEST,
Buttons::COIN_MECH,
Buttons::P1_START,
Buttons::P1_PANEL_UP,
Buttons::P1_PANEL_DOWN,
Buttons::P1_PANEL_LEFT,
Buttons::P1_PANEL_RIGHT,
Buttons::P1_MENU_UP,
Buttons::P1_MENU_DOWN,
Buttons::P1_MENU_LEFT,
Buttons::P1_MENU_RIGHT,
Buttons::P2_START,
Buttons::P2_PANEL_UP,
Buttons::P2_PANEL_DOWN,
Buttons::P2_PANEL_LEFT,
Buttons::P2_PANEL_RIGHT,
Buttons::P2_MENU_UP,
Buttons::P2_MENU_DOWN,
Buttons::P2_MENU_LEFT,
Buttons::P2_MENU_RIGHT,
};
// get analogs
struct {
bool up;
bool down;
bool left;
bool right;
} analog_values[2] = {};
games::ddr::get_analog_x_axis(1, analog_values[0].left, analog_values[0].right);
games::ddr::get_analog_y_axis(1, analog_values[0].up, analog_values[0].down);
games::ddr::get_analog_x_axis(2, analog_values[1].left, analog_values[1].right);
games::ddr::get_analog_y_axis(2, analog_values[1].up, analog_values[1].down);
if (analog_values[0].up) {
controls |= 1 << 9;
}
if (analog_values[0].down) {
controls |= 1 << 10;
}
if (analog_values[0].left) {
controls |= 1 << 11;
}
if (analog_values[0].right) {
controls |= 1 << 12;
}
if (analog_values[1].up) {
controls |= 1 << 17;
}
if (analog_values[1].down) {
controls |= 1 << 18;
}
if (analog_values[1].left) {
controls |= 1 << 19;
}
if (analog_values[1].right) {
controls |= 1 << 20;
}
// update states
auto &buttons = get_buttons();
size_t count = 0;