Added more controller options to idzio

Add axis reversal for dinput and single stick steering for xinput.

dist/idz/segatools.ini

@@ -45,6 +45,9 @@ mode=xinput
 ; Automatically reset the simulated shifter to Neutral when XInput Start is
 ; 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
 
 [dinput]
 ; Name of the DirectInput wheel to use (or any text that occurs in its name)
@@ -83,3 +86,7 @@ gear3=3
 gear4=4
 gear5=5
 gear6=6
+; Invert the accelerator and or brake axis
+; (Needed when using DirectInput for the Dualshock 4 for example)
+reverseAccelAxis=0
+reverseBrakeAxis=0

idzio/config.c

@@ -53,6 +53,17 @@ void idz_di_config_load(struct idz_di_config *cfg, const wchar_t *filename)
     cfg->shift_dn = GetPrivateProfileIntW(L"dinput", L"shiftDn", 0, filename);
     cfg->shift_up = GetPrivateProfileIntW(L"dinput", L"shiftUp", 0, filename);
 
+    cfg->reverse_brake_axis = GetPrivateProfileIntW(
+                            L"dinput",
+                            L"reverseBrakeAxis",
+                            0,
+                            filename);
+    cfg->reverse_accel_axis = GetPrivateProfileIntW(
+                            L"dinput",
+                            L"reverseAccelAxis",
+                            0,
+                            filename);
+
     for (i = 0 ; i < 6 ; i++) {
         swprintf_s(key, _countof(key), L"gear%i", i + 1);
         cfg->gear[i] = GetPrivateProfileIntW(L"dinput", key, i + 1, filename);
@@ -60,6 +71,18 @@ void idz_di_config_load(struct idz_di_config *cfg, const wchar_t *filename)
 
 }
 
+void idz_xi_config_load(struct idz_xi_config *cfg, const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    cfg->single_stick_steering = GetPrivateProfileIntW(
+                                L"io3",
+                                L"singleStickSteering",
+                                0,
+                                filename);
+}
+
 void idz_io_config_load(struct idz_io_config *cfg, const wchar_t *filename)
 {
     assert(cfg != NULL);
@@ -80,6 +103,7 @@ void idz_io_config_load(struct idz_io_config *cfg, const wchar_t *filename)
 
     idz_shifter_config_load(&cfg->shifter, filename);
     idz_di_config_load(&cfg->di, filename);
+    idz_xi_config_load(&cfg->xi, filename);
 }
 
 void idz_shifter_config_load(

idzio/config.h

@@ -18,6 +18,12 @@ struct idz_di_config {
     uint8_t shift_dn;
     uint8_t shift_up;
     uint8_t gear[6];
+    bool reverse_brake_axis;
+    bool reverse_accel_axis;
+};
+
+struct idz_xi_config {
+    bool single_stick_steering;
 };
 
 struct idz_io_config {
@@ -28,9 +34,11 @@ struct idz_io_config {
     int restrict_;
     struct idz_shifter_config shifter;
     struct idz_di_config di;
+    struct idz_xi_config xi;
 };
 
 void idz_di_config_load(struct idz_di_config *cfg, const wchar_t *filename);
+void idz_xi_config_load(struct idz_xi_config *cfg, const wchar_t *filename);
 void idz_io_config_load(struct idz_io_config *cfg, const wchar_t *filename);
 void idz_shifter_config_load(
         struct idz_shifter_config *cfg,

idzio/di.c

@@ -66,6 +66,8 @@ static uint8_t idz_di_shift_up;
 static uint8_t idz_di_view_chg;
 static uint8_t idz_di_start;
 static uint8_t idz_di_gear[6];
+static bool idz_di_reverse_brake_axis;
+static bool idz_di_reverse_accel_axis;
 
 HRESULT idz_di_init(
         const struct idz_di_config *cfg,
@@ -265,6 +267,8 @@ static HRESULT idz_di_config_apply(const struct idz_di_config *cfg)
     dprintf("Wheel: View Change button  : %i\n", cfg->view_chg);
     dprintf("Wheel: Shift Down button . : %i\n", cfg->shift_dn);
     dprintf("Wheel: Shift Up button . . : %i\n", cfg->shift_up);
+    dprintf("Wheel: Reverse Brake Axis  : %i\n", cfg->reverse_brake_axis);
+    dprintf("Wheel: Reverse Accel Axis  : %i\n", cfg->reverse_accel_axis);
     dprintf("Wheel: ---  End  configuration ---\n");
 
     if (cfg->shifter_name[0] != L'\0') {
@@ -287,6 +291,8 @@ static HRESULT idz_di_config_apply(const struct idz_di_config *cfg)
     idz_di_view_chg = cfg->view_chg;
     idz_di_shift_dn = cfg->shift_dn;
     idz_di_shift_up = cfg->shift_up;
+    idz_di_reverse_brake_axis = cfg->reverse_brake_axis;
+    idz_di_reverse_accel_axis = cfg->reverse_accel_axis;
 
     for (i = 0 ; i < 6 ; i++) {
         idz_di_gear[i] = cfg->gear[i];
@@ -501,6 +507,16 @@ static void idz_di_jvs_read_analogs(struct idz_io_analog_state *out)
     accel = (LONG *) &state.bytes[idz_di_off_accel];
 
     out->wheel = state.st.lX - 32768;
-    out->brake = 65535 - *brake;
-    out->accel = 65535 - *accel;
+
+    if (idz_di_reverse_brake_axis) {
+        out->brake = *brake;
+    } else {
+        out->brake = 65535 - *brake;
+    }
+    
+    if (idz_di_reverse_accel_axis) {
+        out->accel = *accel;
+    } else {
+        out->accel = 65535 - *accel;
+    }
 }

idzio/dllmain.c

@@ -30,7 +30,7 @@ HRESULT idz_io_jvs_init(void)
     if (wstr_ieq(idz_io_cfg.mode, L"dinput")) {
         hr = idz_di_init(&idz_io_cfg.di, idz_io_hmodule, &idz_io_backend);
     } else if (wstr_ieq(idz_io_cfg.mode, L"xinput")) {
-        hr = idz_xi_init(&idz_io_backend);
+        hr = idz_xi_init(&idz_io_cfg.xi, &idz_io_backend);
     } else {
         hr = E_INVALIDARG;
         dprintf("IDZ IO: Invalid IO mode \"%S\", use dinput or xinput\n",

idzio/xi.c

@@ -6,6 +6,7 @@
 #include <stdint.h>
 
 #include "idzio/backend.h"
+#include "idzio/config.h"
 #include "idzio/idzio.h"
 #include "idzio/shifter.h"
 #include "idzio/xi.h"
@@ -16,22 +17,45 @@ static void idz_xi_jvs_read_buttons(uint8_t *gamebtn_out);
 static void idz_xi_jvs_read_shifter(uint8_t *gear);
 static void idz_xi_jvs_read_analogs(struct idz_io_analog_state *out);
 
+static HRESULT idz_xi_config_apply(const struct idz_xi_config *cfg);
+
 static const struct idz_io_backend idz_xi_backend = {
     .jvs_read_buttons   = idz_xi_jvs_read_buttons,
     .jvs_read_shifter   = idz_xi_jvs_read_shifter,
     .jvs_read_analogs   = idz_xi_jvs_read_analogs,
 };
 
-HRESULT idz_xi_init(const struct idz_io_backend **backend)
+static bool idz_xi_single_stick_steering;
+
+HRESULT idz_xi_init(const struct idz_xi_config *cfg, const struct idz_io_backend **backend)
 {
+    HRESULT hr;
+    assert(cfg != NULL);
     assert(backend != NULL);
 
+    hr = idz_xi_config_apply(cfg);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
     dprintf("XInput: Using XInput controller\n");
     *backend = &idz_xi_backend;
 
     return S_OK;
 }
 
+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: ---  End  configuration ---\n");
+
+    idz_xi_single_stick_steering = cfg->single_stick_steering;
+
+    return S_OK;
+}
+
 static void idz_xi_jvs_read_buttons(uint8_t *gamebtn_out)
 {
     uint8_t gamebtn;
@@ -130,7 +154,12 @@ static void idz_xi_jvs_read_analogs(struct idz_io_analog_state *out)
         right = 0;
     }
 
-    out->wheel = (left + right) / 2;
+    if(idz_xi_single_stick_steering) {
+        out->wheel = left;
+    } else {
+        out->wheel = (left + right) / 2;
+    }
+
     out->accel = xi.Gamepad.bRightTrigger << 8;
     out->brake = xi.Gamepad.bLeftTrigger << 8;
 }

idzio/xi.h

@@ -5,5 +5,6 @@
 #include <windows.h>
 
 #include "idzio/backend.h"
+#include "idzio/config.h"
 
-HRESULT idz_xi_init(const struct idz_io_backend **backend);
+HRESULT idz_xi_init(const struct idz_xi_config *cfg, const struct idz_io_backend **backend);