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idac, idz, swdc: Fixed DInput brake/accel, added cubic steering

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This commit is contained in:
Dniel97 2023-08-15 17:20:27 +02:00
parent 28ef2d719a
commit 3dc2ec6e69
Signed by untrusted user: Dniel97
GPG Key ID: 6180B3C768FB2E08
17 changed files with 257 additions and 84 deletions
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21
dist/idac/segatools.ini vendored
View File

@ -65,6 +65,18 @@ path=
; Leave empty if you want to use Segatools built-in gamepad/wheel input.
path=
; -----------------------------------------------------------------------------
; Input settings
; -----------------------------------------------------------------------------
; Keyboard bindings are specified as hexadecimal (prefixed with 0x) or decimal
; (not prefixed with 0x) virtual-key codes, a list of which can be found here:
;
; https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
;
; This is, admittedly, not the most user-friendly configuration method in the
; world. An improved solution will be provided later.
[io4]
; Test button virtual-key code. Default is the 1 key.
test=0x31
@ -72,6 +84,7 @@ test=0x31
service=0x32
; Keyboard button to increment coin counter. Default is the 3 key.
coin=0x33
; Input API selection for IO4 input emulator.
; Set "xinput" to use a gamepad and "dinput" to use a steering wheel.
mode=xinput
@ -79,20 +92,22 @@ mode=xinput
; pressed (e.g. when navigating menus between races).
autoNeutral=1
; Use the left thumbstick for steering instead of both on XInput Controllers.
; Not recommended as it will not give you the precision needed for this game
; Not recommended as it will not give you the precision needed for this game.
singleStickSteering=1
; Use linear steering instead of the default non-linear cubing steering.
linearSteering=0
; Adjust scaling for steering wheel input.
;
; This setting scales the steering wheel input so that the maximum positive
; and minimum negative steering inputs reported in the operator menu's input
; test screen do not exceed the value below. The maximum possible value is 128,
; and the value that matches the input range of a real cabinet is 97.
; and the value that matches the input range of a real cabinet is 128.
;
; NOTE: This is not the same thing as DirectInput steering wheel movement
; range! Segatools cannot control the maximum angle of your physical steering
; wheel controller, this setting is vendor-specific and can only be adjusted
; in the Control Panel.
restrict=97
restrict=128
[dinput]
; Name of the DirectInput wheel to use (or any text that occurs in its name)

30
dist/idz/segatools.ini vendored
View File

@ -8,6 +8,11 @@ option=
; NOTE: This has nothing to do with Windows %APPDATA%.
appdata=
[aime]
; Controls emulation of the Aime card reader assembly.
enable=1
aimePath=DEVICE\aime.txt
[dns]
; Insert the hostname or IP address of the server you wish to use here.
; Note that 127.0.0.1, localhost etc are specifically rejected.
@ -50,7 +55,26 @@ path=
; Leave empty if you want to use Segatools built-in gamepad/wheel input.
path=
; -----------------------------------------------------------------------------
; Input settings
; -----------------------------------------------------------------------------
; Keyboard bindings are specified as hexadecimal (prefixed with 0x) or decimal
; (not prefixed with 0x) virtual-key codes, a list of which can be found here:
;
; https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
;
; This is, admittedly, not the most user-friendly configuration method in the
; world. An improved solution will be provided later.
[io3]
; Test button virtual-key code. Default is the 1 key.
test=0x31
; Service button virtual-key code. Default is the 2 key.
service=0x32
; Keyboard button to increment coin counter. Default is the 3 key.
coin=0x33
; Input API selection for JVS input emulator.
; Set "xinput" to use a gamepad and "dinput" to use a steering wheel.
mode=xinput
@ -58,8 +82,10 @@ mode=xinput
; pressed (e.g. when navigating menus between races).
autoNeutral=1
; Use the left thumbstick for steering instead of both on XInput Controllers.
; Not recommended as it will not give you the precision needed for this game
singleStickSteering=0
; Not recommended as it will not give you the precision needed for this game.
singleStickSteering=1
; Use linear steering instead of the default non-linear cubing steering.
linearSteering=0
; Adjust scaling for steering wheel input.
;
; This setting scales the steering wheel input so that the maximum positive

21
dist/swdc/segatools.ini vendored
View File

@ -40,6 +40,18 @@ path=
; Leave empty if you want to use Segatools built-in gamepad/wheel input.
path=
; -----------------------------------------------------------------------------
; Input settings
; -----------------------------------------------------------------------------
; Keyboard bindings are specified as hexadecimal (prefixed with 0x) or decimal
; (not prefixed with 0x) virtual-key codes, a list of which can be found here:
;
; https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
;
; This is, admittedly, not the most user-friendly configuration method in the
; world. An improved solution will be provided later.
[io4]
; Test button virtual-key code. Default is the 1 key.
test=0x31
@ -49,22 +61,25 @@ service=0x32
coin=0x33
; Input API selection for IO4 input emulator.
; Set "xinput" to use a gamepad and "dinput" to use a steering wheel.
mode=xinput
; Use the left thumbstick for steering instead of both on XInput Controllers.
; Not recommended as it will not give you the precision needed for this game
; Not recommended as it will not give you the precision needed for this game.
singleStickSteering=1
; Use linear steering instead of the default non-linear cubing steering.
linearSteering=0
; Adjust scaling for steering wheel input.
;
; This setting scales the steering wheel input so that the maximum positive
; and minimum negative steering inputs reported in the operator menu's input
; test screen do not exceed the value below. The maximum possible value is 128,
; and the value that matches the input range of a real cabinet is 97.
; and the value that matches the input range of a real cabinet is 128.
;
; NOTE: This is not the same thing as DirectInput steering wheel movement
; range! Segatools cannot control the maximum angle of your physical steering
; wheel controller, this setting is vendor-specific and can only be adjusted
; in the Control Panel.
restrict=97
restrict=128
[dinput]
; Name of the DirectInput wheel to use (or any text that occurs in its name)

2
idachook/dllmain.c
View File

@ -75,7 +75,7 @@ static DWORD CALLBACK idac_pre_startup(void)
spike_hook_init(L".\\segatools.ini");
dprintf("--- End idac_pre_startup ---\n");
dprintf("--- End idac_pre_startup ---\n");
/* Jump to EXE start address */

6
idacio/config.c
View File

@ -81,6 +81,12 @@ void idac_xi_config_load(struct idac_xi_config *cfg, const wchar_t *filename)
L"singleStickSteering",
0,
filename);
cfg->linear_steering = GetPrivateProfileIntW(
L"io4",
L"linearSteering",
0,
filename);
}
void idac_io_config_load(struct idac_io_config *cfg, const wchar_t *filename)

1
idacio/config.h
View File

@ -24,6 +24,7 @@ struct idac_di_config {
struct idac_xi_config {
bool single_stick_steering;
bool linear_steering;
};
struct idac_io_config {

8
idacio/di.c
View File

@ -262,8 +262,8 @@ static HRESULT idac_di_config_apply(const struct idac_di_config *cfg)
dprintf("Wheel: --- Begin configuration ---\n");
dprintf("Wheel: Device name . . . . : Contains \"%S\"\n",
cfg->device_name);
dprintf("Wheel: Brake axis . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Accelerator axis . : %S\n", brake_axis->name);
dprintf("Wheel: Brake axis . . . . : %S\n", brake_axis->name);
dprintf("Wheel: Accel axis . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Start button . . . : %i\n", cfg->start);
dprintf("Wheel: View Change button : %i\n", cfg->view_chg);
dprintf("Wheel: Shift Down button . : %i\n", cfg->shift_dn);
@ -286,8 +286,8 @@ static HRESULT idac_di_config_apply(const struct idac_di_config *cfg)
dprintf("Shifter: --- End configuration ---\n");
}
idac_di_off_brake = accel_axis->off;
idac_di_off_accel = brake_axis->off;
idac_di_off_brake = brake_axis->off;
idac_di_off_accel = accel_axis->off;
idac_di_start = cfg->start;
idac_di_view_chg = cfg->view_chg;
idac_di_shift_dn = cfg->shift_dn;

94
idacio/xi.c
View File

@ -1,16 +1,16 @@
#include <windows.h>
#include <xinput.h>
#include "idacio/xi.h"
#include <assert.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <windows.h>
#include <xinput.h>
#include "idacio/backend.h"
#include "idacio/config.h"
#include "idacio/idacio.h"
#include "idacio/shifter.h"
#include "idacio/xi.h"
#include "util/dprintf.h"
static void idac_xi_get_gamebtns(uint8_t *gamebtn_out);
@ -20,15 +20,15 @@ static void idac_xi_get_analogs(struct idac_io_analog_state *out);
static HRESULT idac_xi_config_apply(const struct idac_xi_config *cfg);
static const struct idac_io_backend idac_xi_backend = {
.get_gamebtns = idac_xi_get_gamebtns,
.get_shifter = idac_xi_get_shifter,
.get_analogs = idac_xi_get_analogs,
.get_gamebtns = idac_xi_get_gamebtns,
.get_shifter = idac_xi_get_shifter,
.get_analogs = idac_xi_get_analogs,
};
static bool idac_xi_single_stick_steering;
static bool idac_xi_linear_steering;
HRESULT idac_xi_init(const struct idac_xi_config *cfg, const struct idac_io_backend **backend)
{
HRESULT idac_xi_init(const struct idac_xi_config *cfg, const struct idac_io_backend **backend) {
HRESULT hr;
assert(cfg != NULL);
assert(backend != NULL);
@ -45,24 +45,23 @@ HRESULT idac_xi_init(const struct idac_xi_config *cfg, const struct idac_io_back
return S_OK;
}
HRESULT idac_io_poll(void)
{
HRESULT idac_io_poll(void) {
return S_OK;
}
static HRESULT idac_xi_config_apply(const struct idac_xi_config *cfg)
{
static HRESULT idac_xi_config_apply(const struct idac_xi_config *cfg) {
dprintf("XInput: --- Begin configuration ---\n");
dprintf("XInput: Single Stick Steering : %i\n", cfg->single_stick_steering);
dprintf("XInput: Linear Steering . . . : %i\n", cfg->linear_steering);
dprintf("XInput: --- End configuration ---\n");
idac_xi_single_stick_steering = cfg->single_stick_steering;
idac_xi_linear_steering = cfg->linear_steering;
return S_OK;
}
static void idac_xi_get_gamebtns(uint8_t *gamebtn_out)
{
static void idac_xi_get_gamebtns(uint8_t *gamebtn_out) {
uint8_t gamebtn;
XINPUT_STATE xi;
WORD xb;
@ -102,8 +101,7 @@ static void idac_xi_get_gamebtns(uint8_t *gamebtn_out)
*gamebtn_out = gamebtn;
}
static void idac_xi_get_shifter(uint8_t *gear)
{
static void idac_xi_get_shifter(uint8_t *gear) {
bool shift_dn;
bool shift_up;
XINPUT_STATE xi;
@ -144,8 +142,32 @@ static void idac_xi_get_shifter(uint8_t *gear)
*gear = idac_shifter_current_gear();
}
static void idac_xi_get_analogs(struct idac_io_analog_state *out)
{
static int apply_non_linear_transform(int value, int deadzone_center) {
const int max_input = 32767;
const double power_factor = 3.0;
// Apply deadzone only after passing the center threshold
if (abs(value) < deadzone_center) {
return 0;
}
// Scale the value to the range [-1.0, 1.0]
double scaled_value = (abs(value) - deadzone_center) / (double)(max_input - deadzone_center);
// Apply a non-linear transform (cubing in this case) and preserve the sign
double signed_value = copysign(pow(scaled_value, power_factor), value);
// Scale the value back to the range [-32770, 32767]
int transformed_value = (int)(signed_value * max_input);
// Clamp the value to the range [-32767, 32767]
transformed_value = (transformed_value > max_input) ? max_input : transformed_value;
transformed_value = (transformed_value < -max_input) ? -max_input : transformed_value;
return transformed_value;
}
static void idac_xi_get_analogs(struct idac_io_analog_state *out) {
XINPUT_STATE xi;
int left;
int right;
@ -156,27 +178,33 @@ static void idac_xi_get_analogs(struct idac_io_analog_state *out)
XInputGetState(0, &xi);
left = xi.Gamepad.sThumbLX;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
right = xi.Gamepad.sThumbRX;
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
if (!idac_xi_linear_steering) {
// Apply non-linear transform for both sticks
left = apply_non_linear_transform(left, XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE);
right = apply_non_linear_transform(right, XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE);
} else {
right = 0;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else {
right = 0;
}
}
if (idac_xi_single_stick_steering) {
out->wheel = left;
// dprintf("XInput: Single Stick Steering: %i\n", out->wheel);
} else {
out->wheel = (left + right) / 2;
}

2
idzhook/dllmain.c
View File

@ -107,7 +107,7 @@ static DWORD CALLBACK idz_pre_startup(void)
spike_hook_init(L".\\segatools.ini");
dprintf("--- End idz_pre_startup ---\n");
dprintf("--- End idz_pre_startup ---\n");
/* Jump to EXE start address */

6
idzio/config.c
View File

@ -81,6 +81,12 @@ void idz_xi_config_load(struct idz_xi_config *cfg, const wchar_t *filename)
L"singleStickSteering",
0,
filename);
cfg->linear_steering = GetPrivateProfileIntW(
L"io3",
L"linearSteering",
0,
filename);
}
void idz_io_config_load(struct idz_io_config *cfg, const wchar_t *filename)

1
idzio/config.h
View File

@ -24,6 +24,7 @@ struct idz_di_config {
struct idz_xi_config {
bool single_stick_steering;
bool linear_steering;
};
struct idz_io_config {

8
idzio/di.c
View File

@ -262,8 +262,8 @@ static HRESULT idz_di_config_apply(const struct idz_di_config *cfg)
dprintf("Wheel: --- Begin configuration ---\n");
dprintf("Wheel: Device name . . . . : Contains \"%S\"\n",
cfg->device_name);
dprintf("Wheel: Brake axis . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Accelerator axis . : %S\n", brake_axis->name);
dprintf("Wheel: Brake axis . . . . : %S\n", brake_axis->name);
dprintf("Wheel: Accel axis . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Start button . . . : %i\n", cfg->start);
dprintf("Wheel: View Change button : %i\n", cfg->view_chg);
dprintf("Wheel: Shift Down button . : %i\n", cfg->shift_dn);
@ -286,8 +286,8 @@ static HRESULT idz_di_config_apply(const struct idz_di_config *cfg)
dprintf("Shifter: --- End configuration ---\n");
}
idz_di_off_brake = accel_axis->off;
idz_di_off_accel = brake_axis->off;
idz_di_off_brake = brake_axis->off;
idz_di_off_accel = accel_axis->off;
idz_di_start = cfg->start;
idz_di_view_chg = cfg->view_chg;
idz_di_shift_dn = cfg->shift_dn;

64
idzio/xi.c
View File

@ -1,6 +1,7 @@
#include <windows.h>
#include <xinput.h>
#include <math.h>
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
@ -26,6 +27,7 @@ static const struct idz_io_backend idz_xi_backend = {
};
static bool idz_xi_single_stick_steering;
static bool idz_xi_linear_steering;
HRESULT idz_xi_init(const struct idz_xi_config *cfg, const struct idz_io_backend **backend)
{
@ -49,9 +51,11 @@ static HRESULT idz_xi_config_apply(const struct idz_xi_config *cfg)
{
dprintf("XInput: --- Begin configuration ---\n");
dprintf("XInput: Single Stick Steering : %i\n", cfg->single_stick_steering);
dprintf("XInput: Linear Steering . . . : %i\n", cfg->linear_steering);
dprintf("XInput: --- End configuration ---\n");
idz_xi_single_stick_steering = cfg->single_stick_steering;
idz_xi_linear_steering = cfg->linear_steering;
return S_OK;
}
@ -123,6 +127,31 @@ static void idz_xi_jvs_read_shifter(uint8_t *gear)
*gear = idz_shifter_current_gear();
}
static int apply_non_linear_transform(int value, int deadzone_center) {
const int max_input = 32767;
const double power_factor = 3.0;
// Apply deadzone only after passing the center threshold
if (abs(value) < deadzone_center) {
return 0;
}
// Scale the value to the range [-1.0, 1.0]
double scaled_value = (abs(value) - deadzone_center) / (double)(max_input - deadzone_center);
// Apply a non-linear transform (cubing in this case) and preserve the sign
double signed_value = copysign(pow(scaled_value, power_factor), value);
// Scale the value back to the range [-32770, 32767]
int transformed_value = (int)(signed_value * max_input);
// Clamp the value to the range [-32767, 32767]
transformed_value = (transformed_value > max_input) ? max_input : transformed_value;
transformed_value = (transformed_value < -max_input) ? -max_input : transformed_value;
return transformed_value;
}
static void idz_xi_jvs_read_analogs(struct idz_io_analog_state *out)
{
XINPUT_STATE xi;
@ -135,23 +164,28 @@ static void idz_xi_jvs_read_analogs(struct idz_io_analog_state *out)
XInputGetState(0, &xi);
left = xi.Gamepad.sThumbLX;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
right = xi.Gamepad.sThumbRX;
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
if (!idz_xi_linear_steering) {
// Apply non-linear transform for both sticks
left = apply_non_linear_transform(left, XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE);
right = apply_non_linear_transform(right, XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE);
} else {
right = 0;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else {
right = 0;
}
}
if(idz_xi_single_stick_steering) {

6
swdcio/config.c
View File

@ -71,6 +71,12 @@ void swdc_xi_config_load(struct swdc_xi_config *cfg, const wchar_t *filename)
L"singleStickSteering",
0,
filename);
cfg->linear_steering = GetPrivateProfileIntW(
L"io4",
L"linearSteering",
0,
filename);
}
void swdc_io_config_load(struct swdc_io_config *cfg, const wchar_t *filename)

1
swdcio/config.h
View File

@ -26,6 +26,7 @@ struct swdc_di_config {
struct swdc_xi_config {
bool single_stick_steering;
bool linear_steering;
};
struct swdc_io_config {

8
swdcio/di.c
View File

@ -246,8 +246,8 @@ static HRESULT swdc_di_config_apply(const struct swdc_di_config *cfg)
dprintf("Wheel: --- Begin configuration ---\n");
dprintf("Wheel: Device name . . . . : Contains \"%S\"\n",
cfg->device_name);
dprintf("Wheel: Brake axis . . . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Accelerator axis . . . : %S\n", brake_axis->name);
dprintf("Wheel: Brake axis . . . . . . : %S\n", brake_axis->name);
dprintf("Wheel: Accel axis . . . . . . : %S\n", accel_axis->name);
dprintf("Wheel: Start button . . . . . : %i\n", cfg->start);
dprintf("Wheel: View Change button . . : %i\n", cfg->view_chg);
dprintf("Wheel: Shift Down button . . : %i\n", cfg->shift_dn);
@ -260,8 +260,8 @@ static HRESULT swdc_di_config_apply(const struct swdc_di_config *cfg)
dprintf("Wheel: Reverse Accel Axis . . : %i\n", cfg->reverse_accel_axis);
dprintf("Wheel: --- End configuration ---\n");
swdc_di_off_brake = accel_axis->off;
swdc_di_off_accel = brake_axis->off;
swdc_di_off_brake = brake_axis->off;
swdc_di_off_accel = accel_axis->off;
swdc_di_start = cfg->start;
swdc_di_view_chg = cfg->view_chg;
swdc_di_shift_dn = cfg->shift_dn;

62
swdcio/xi.c
View File

@ -1,6 +1,7 @@
#include <windows.h>
#include <xinput.h>
#include <math.h>
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
@ -23,6 +24,7 @@ static const struct swdc_io_backend swdc_xi_backend = {
};
static bool swdc_xi_single_stick_steering;
static bool swdc_xi_linear_steering;
HRESULT swdc_xi_init(const struct swdc_xi_config *cfg, const struct swdc_io_backend **backend)
{
@ -51,9 +53,11 @@ static HRESULT swdc_xi_config_apply(const struct swdc_xi_config *cfg)
{
dprintf("XInput: --- Begin configuration ---\n");
dprintf("XInput: Single Stick Steering : %i\n", cfg->single_stick_steering);
dprintf("XInput: Linear Steering . . . : %i\n", cfg->linear_steering);
dprintf("XInput: --- End configuration ---\n");
swdc_xi_single_stick_steering = cfg->single_stick_steering;
swdc_xi_linear_steering = cfg->linear_steering;
return S_OK;
}
@ -123,6 +127,31 @@ static void swdc_xi_get_gamebtns(uint16_t *gamebtn_out)
*gamebtn_out = gamebtn;
}
static int apply_non_linear_transform(int value, int deadzone_center) {
const int max_input = 32767;
const double power_factor = 3.0;
// Apply deadzone only after passing the center threshold
if (abs(value) < deadzone_center) {
return 0;
}
// Scale the value to the range [-1.0, 1.0]
double scaled_value = (abs(value) - deadzone_center) / (double)(max_input - deadzone_center);
// Apply a non-linear transform (cubing in this case) and preserve the sign
double signed_value = copysign(pow(scaled_value, power_factor), value);
// Scale the value back to the range [-32770, 32767]
int transformed_value = (int)(signed_value * max_input);
// Clamp the value to the range [-32767, 32767]
transformed_value = (transformed_value > max_input) ? max_input : transformed_value;
transformed_value = (transformed_value < -max_input) ? -max_input : transformed_value;
return transformed_value;
}
static void swdc_xi_get_analogs(struct swdc_io_analog_state *out)
{
XINPUT_STATE xi;
@ -135,23 +164,28 @@ static void swdc_xi_get_analogs(struct swdc_io_analog_state *out)
XInputGetState(0, &xi);
left = xi.Gamepad.sThumbLX;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
right = xi.Gamepad.sThumbRX;
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
if (!swdc_xi_linear_steering) {
// Apply non-linear transform for both sticks
left = apply_non_linear_transform(left, XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE);
right = apply_non_linear_transform(right, XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE);
} else {
right = 0;
if (left < -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left += XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else if (left > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) {
left -= XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE;
} else {
left = 0;
}
if (right < -XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right += XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else if (right > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
right -= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE;
} else {
right = 0;
}
}
if (swdc_xi_single_stick_steering) {