[Keymap] Add new IIDX gamepad keymap for Synth Labs Solo (qmk#18741)

Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/synthlabs/solo/config.h

@@ -53,6 +53,6 @@
 #define BOOTMAGIC_LITE_ROW 1
 #define BOOTMAGIC_LITE_COLUMN 1
 
-#define JOYSTICK_BUTTON_COUNT 8
+#define JOYSTICK_BUTTON_COUNT 13
 #define JOYSTICK_AXES_COUNT 1
 #define JOYSTICK_AXES_RESOLUTION 16

keyboards/synthlabs/solo/keymaps/gamepad/readme.md

@@ -1,3 +1,3 @@
 # Gamepad Synth Labs Solo Layout
 
-This keymap is intended for usage as a IIDX controller. The rotary encoder is mapped as a virtual 1-axis joystick.
+This keymap is intended for usage as a generic gamepad. The rotary encoder is mapped as a virtual 1-axis joystick.

keyboards/synthlabs/solo/keymaps/iidx/keymap.c

@@ -0,0 +1,72 @@
+// Copyright 2022 Aaron Hong (@hongaaronc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+#include "joystick.h"
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_all(
+                                    JS_BUTTON0,JS_BUTTON1,JS_BUTTON2,JS_BUTTON3,JS_BUTTON4,JS_BUTTON5,JS_BUTTON6,
+        JS_BUTTON8, MO(1), JS_BUTTON7,
+                                    JS_BUTTON0,JS_BUTTON1,JS_BUTTON2,JS_BUTTON3,JS_BUTTON4,JS_BUTTON5,JS_BUTTON6
+    ),
+    [1] = LAYOUT_all(
+                                    JS_BUTTON9,JS_BUTTON0,JS_BUTTON10, _______,JS_BUTTON11,JS_BUTTON1,JS_BUTTON12,
+        _______, _______, _______,
+                                    JS_BUTTON10,JS_BUTTON0,JS_BUTTON9, _______,JS_BUTTON11,JS_BUTTON1,JS_BUTTON12
+    ),
+};
+
+#if defined(ENCODER_MAP_ENABLE)
+/* The amount of time the encoder has to remain stationary, before unregistering encoder bindings */
+uint16_t encoder_stationary_release_delay_ms = 25;
+
+uint16_t encoder_last_update_time = 0;
+
+enum {
+    CCW_JOYSTICK_BUTTON = 8,
+    CW_JOYSTICK_BUTTON = 7,
+};
+
+enum {
+    CCW_MACRO = SAFE_RANGE,
+    CW_MACRO,
+};
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case CCW_MACRO:
+            unregister_joystick_button(CW_JOYSTICK_BUTTON);
+            register_joystick_button(CCW_JOYSTICK_BUTTON);
+            encoder_last_update_time = timer_read(); /* Update the last time that the encoder was detected as rotated */
+            return false;
+        case CW_MACRO:
+            unregister_joystick_button(CCW_JOYSTICK_BUTTON);
+            register_joystick_button(CW_JOYSTICK_BUTTON);
+            encoder_last_update_time = timer_read();  /* Update the last time that the encoder was detected as rotated */
+            return false;
+        default:
+            return true;
+    }
+}
+
+void housekeeping_task_user(void) {
+    uint16_t current_time = timer_read();
+    uint16_t elapsed_time_since_last_update = current_time - encoder_last_update_time;
+
+    /* If an encoder has been stationary for encoder_stationary_release_delay_ms, then unregister the joystick buttons for both directions */
+    if (elapsed_time_since_last_update >= encoder_stationary_release_delay_ms) {
+        unregister_joystick_button(CCW_JOYSTICK_BUTTON);
+        unregister_joystick_button(CW_JOYSTICK_BUTTON);
+    }
+}
+
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [0] =   { ENCODER_CCW_CW(
+                CCW_MACRO,
+                CW_MACRO
+            ) },
+    [1] =   { ENCODER_CCW_CW(_______, _______) },
+};
+#endif

keyboards/synthlabs/solo/keymaps/iidx/readme.md

@@ -0,0 +1,16 @@
+# IIDX Synth Labs Solo Layout
+
+This keymap is intended for usage as a gamepad for [beatmania IIDX INFINITAS](https://p.eagate.573.jp/game/infinitas/2/index.html).
+
+This keycap follows the default keymapping for the game, shown here:
+
+![Default Keymapping Settings Screen](https://i.imgur.com/Va48FnZ.png)
+
+The face buttons correspond directly to ボタン 1 - ボタン 7
+
+Turning the knob clockwise corresponds to スクラッチ-右回転
+Turning the knob counter-clockwise corresponds to スクラッチ-左回転
+
+While holding down the knob button
+* The bottom row of face buttons corresponds to ボタン E1 - ボタン E4
+* The top-left and top-right face buttons correspond to ボタン 1 and ボタン 2, for adjustment of in-game scroll speed

keyboards/synthlabs/solo/keymaps/iidx/rules.mk

@@ -0,0 +1,3 @@
+JOYSTICK_ENABLE = yes
+DEBOUNCE_TYPE = sym_eager_pk
+ENCODER_MAP_ENABLE = yes