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path: root/keyboards/massdrop/ctrl/keymaps/responsive_pattern/keymap.c
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#include QMK_KEYBOARD_H

// uint8_t keyboard_leds(void)
#include <tmk_core/protocol/arm_atsam/main_arm_atsam.h>


#if ISSI3733_LED_COUNT == 119
#   define KEY_LED_COUNT 87
#elif ISSI3733_LED_COUNT == 105
#   define KEY_LED_COUNT 67
#endif

#define min(x, y) (x < y ? x : y)


extern issi3733_led_t *lede;
extern issi3733_led_t led_map[];

enum ctrl_keycodes {
    L_BRI = SAFE_RANGE, //LED Brightness Increase
    L_BRD,              //LED Brightness Decrease
    L_PTN,              //LED Pattern Select Next
    L_PTP,              //LED Pattern Select Previous
    L_PSI,              //LED Pattern Speed Increase
    L_PSD,              //LED Pattern Speed Decrease
    L_T_MD,             //LED Toggle Mode
    L_T_ONF,            //LED Toggle On / Off
    L_ON,               //LED On
    L_OFF,              //LED Off
    L_T_BR,             //LED Toggle Breath Effect
    L_T_PTD,            //LED Toggle Scrolling Pattern Direction
    U_T_AUTO,           //USB Extra Port Toggle Auto Detect / Always Active
    U_T_AGCR,           //USB Toggle Automatic GCR control
    DBG_TOG,            //DEBUG Toggle On / Off
    DBG_MTRX,           //DEBUG Toggle Matrix Prints
    DBG_KBD,            //DEBUG Toggle Keyboard Prints
    DBG_MOU,            //DEBUG Toggle Mouse Prints
    MD_BOOT,            //Restart into bootloader after hold timeout

    L_SP_PR,            //LED Splash Pattern Select Previous
    L_SP_NE,            //LED Splash Pattern Select Next

    L_SP_WD,            //LED Splash Widen Wavefront width
    L_SP_NW,            //LED Splash Narrow Wavefront width

    L_SP_FA,            //LED Splash wave travel speed faster (shorter period)
    L_SP_SL,            //LED Splash wave travel speed slower (longer period)

    L_CP_PR,            //LED Color Pattern Select Previous
    L_CP_NX,            //LEB Color Pattern Select Next
};

#define TG_NKRO MAGIC_TOGGLE_NKRO //Toggle 6KRO / NKRO mode
#define ______ KC_TRNS

keymap_config_t keymap_config;

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [0] = LAYOUT(
        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,             KC_PSCR, KC_SLCK, KC_PAUS, \
        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,   KC_INS,  KC_HOME, KC_PGUP, \
        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,   KC_DEL,  KC_END,  KC_PGDN, \
        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT, \
        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                              KC_UP, \
        KC_LCTL, KC_LGUI, KC_LALT,                   KC_SPC,                             KC_RALT, MO(1),   KC_APP,  KC_RCTL,            KC_LEFT, KC_DOWN, KC_RGHT \
    ),
    [1] = LAYOUT(
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,            KC_MUTE, _______, _______, \
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,   KC_MPLY, KC_MSTP, KC_VOLU, \
        L_T_BR,  L_PSD,   L_BRI,   L_PSI,   _______, _______, _______, U_T_AUTO,U_T_AGCR,_______, MO(2),   _______, _______, _______,   KC_MPRV, KC_MNXT, KC_VOLD, \
        L_T_PTD, L_PTP,   L_BRD,   L_PTN,   _______, _______, _______, _______, _______, _______, _______, _______, _______, \
        _______, L_T_MD,  L_T_ONF, _______, _______, MD_BOOT, TG_NKRO, _______, _______, _______, _______, _______,                              _______, \
        _______, _______, _______,                   _______,                            _______, _______, _______, _______,            _______, _______, _______ \
    ),
    [2] = LAYOUT(
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,            _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,   _______, _______, _______, \
        L_CP_NX, L_SP_SL, L_SP_WD, L_SP_FA, _______, _______, L_CP_NX, L_SP_SL, L_SP_WD, L_SP_FA, _______, _______, _______, _______,   _______, _______, _______, \
        L_CP_PR, L_SP_PR, L_SP_NW, L_SP_NE, _______, _______, L_CP_PR, L_SP_PR, L_SP_NW, L_SP_NE, _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, TG_NKRO, _______, _______, _______, _______, _______,                              _______, \
        _______, _______, _______,                   _______,                            _______, _______, _______, _______,            _______, _______, _______ \
    ),
    /*
    [X] = LAYOUT(
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,            _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,   _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,   _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
        _______, _______, _______, _______, _______, _______, TG_NKRO, _______, _______, _______, _______, _______,                              _______, \
        _______, _______, _______,                   _______,                            _______, _______, _______, _______,            _______, _______, _______ \
    ),
    */
};

// see: /tmk_core/common/keycode.h
uint8_t KEYCODE_TO_LED_ID[256];
uint8_t DISTANCE_MAP[KEY_LED_COUNT+1][KEY_LED_COUNT+1];
struct user_led_t {
    uint8_t state;
    uint8_t r;
    uint8_t g;
    uint8_t b;
} USER_LED[KEY_LED_COUNT] = {

};

struct {
    uint8_t PATTERN_INDEX;
    uint8_t WAVE_FRONT_WIDTH;
    uint16_t WAVE_PERIOD;
    uint8_t COLOR_PATTERN_INDEX;
    uint8_t TRAVEL_DISTANCE;
} USER_CONFIG = {
    .PATTERN_INDEX = 1,
    .WAVE_FRONT_WIDTH = 3,
    .WAVE_PERIOD = 50,
    .COLOR_PATTERN_INDEX = 0,
    .TRAVEL_DISTANCE = 25,
};

uint8_t ktli(uint16_t keycode){
    if(keycode < 256){
        // the array is initialized in `matrix_init_user()`
        return KEYCODE_TO_LED_ID[keycode];
    }
    switch(keycode){
    // definition of MO(layer): quantum/quantum_keycodes.h: line 614
    case MO(1): return 82;
    }
    return 0;
};

// Runs just one time when the keyboard initializes.
static void init_keycode_to_led_map(void){
    uint16_t LED_MAP[MATRIX_ROWS][MATRIX_COLS] = LAYOUT(
            1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,
            20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,
            36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
            52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,
#if KEY_LED_COUNT >= 87
            68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87
#endif
    );

    uint16_t key = 0;
    for(uint8_t y = 0; y < MATRIX_ROWS; ++y){
        for(uint8_t x = 0; x < MATRIX_COLS; ++x){
            key = keymaps[0][y][x];
            if(key < 256){
                KEYCODE_TO_LED_ID[key] = LED_MAP[y][x];
            }
        }
    }
}
// https://docs.qmk.fm/#/feature_terminal
#define KEY_POSITION_MAP_ROWS 6
#define KEY_POSITION_MAP_COLUMNS 20
static void init_distance_map(void){
    uint16_t KEY_POSITION_MAP[KEY_POSITION_MAP_ROWS][KEY_POSITION_MAP_COLUMNS] = {
        { KC_NO,   KC_ESC,  KC_NO,   KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_NO,  KC_F5,  KC_F6,   KC_F7,  KC_F8,   KC_F9,    KC_F10,  KC_F11,  KC_F12,  KC_NO,   KC_PSCR, KC_SLCK, KC_PAUS,  },
        // { KC_NO,   KC_NO,   KC_NO,   KC_NO,  KC_NO,  KC_NO,  KC_NO,  KC_NO,  KC_NO,  KC_NO,   KC_NO,  KC_NO,   KC_NO,    KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,    },
        { KC_NO,   KC_GRV,  KC_1,    KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,    KC_9,   KC_0,    KC_MINS,  KC_EQL,  KC_BSPC, KC_BSPC, KC_NO,   KC_INS,  KC_HOME, KC_PGUP,  },
        { KC_NO,   KC_TAB,  KC_Q,    KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,    KC_O,   KC_P,    KC_LBRC,  KC_RBRC, KC_BSLS, KC_BSLS, KC_NO,   KC_DEL,  KC_END,  KC_PGDN,  },
        { KC_NO,   KC_CAPS, KC_A,    KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,    KC_L,   KC_SCLN, KC_QUOT,  KC_ENT,  KC_ENT,  KC_ENT,  KC_NO,   KC_NO,   KC_NO,   KC_NO,    },
        { KC_NO,   KC_LSFT, KC_Z,    KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM, KC_DOT, KC_SLSH, KC_RSFT,  KC_RSFT, KC_RSFT, KC_RSFT, KC_NO,   KC_NO,   KC_UP,   KC_NO,    },
        { KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_SPC, KC_SPC, KC_SPC, KC_SPC, KC_SPC, KC_RALT, KC_NO,  MO(1),   KC_APP,   KC_RCTL, KC_RCTL, KC_RCTL, KC_NO,   KC_LEFT, KC_DOWN, KC_RIGHT, },
    };
    uint8_t columns = KEY_POSITION_MAP_COLUMNS;
    uint8_t rows = KEY_POSITION_MAP_ROWS;

    for(uint8_t y = 0; y < rows; ++y){
        for(uint8_t x = 0; x < columns; ++x){
            uint8_t id1 = ktli(KEY_POSITION_MAP[y][x]);

            for(uint8_t j = y; j < rows; ++j){
                for(uint8_t i = 0; i < columns; ++i){
                    uint8_t id2 = ktli(KEY_POSITION_MAP[j][i]);

                    if(id1 == id2) continue;

                    uint8_t dx = abs(i - x);
                    uint8_t dy = abs(j - y);
                    uint8_t dis = dx + dy;
                    if(i < x && j > y){
                        dis -= min(dx, dy);
                    }

                    uint8_t _dis = DISTANCE_MAP[id1][id2];
                    if(_dis && _dis <= dis) continue;
                    DISTANCE_MAP[id1][id2] = dis;
                    DISTANCE_MAP[id2][id1] = dis;
                }
            }
        }
    }
}
void matrix_init_user(void) {
    init_keycode_to_led_map();
    init_distance_map();
};

// /tmk_core/protocol/arm_atsam/led_matrix.c: line 244
uint8_t led_enabled;
float led_animation_speed;
uint8_t led_animation_direction;
uint8_t led_animation_orientation;
uint8_t led_animation_breathing;
uint8_t led_animation_breathe_cur;
uint8_t breathe_step;
uint8_t breathe_dir;
uint64_t led_next_run;

uint8_t led_animation_id;
uint8_t led_lighting_mode;

issi3733_led_t *led_cur;
uint8_t led_per_run;
float breathe_mult;

// overrided /tmk_core/protocol/arm_atsam/led_matrix.c: line 484
void rgb_matrix_init_user(void){
    led_animation_speed = ANIMATION_SPEED_STEP * 15;
    led_per_run = 15;
}

// overrided /tmk_core/protocol/arm_atsam/led_matrix.c: line 262
void led_matrix_run(void)
{
    float ro;
    float go;
    float bo;
    float po;
    uint8_t led_this_run = 0;
    led_setup_t *f = (led_setup_t*)led_setups[led_animation_id];

    if (led_cur == 0) //Denotes start of new processing cycle in the case of chunked processing
    {
        led_cur = led_map;

        breathe_mult = 1;

        if (led_animation_breathing)
        {
            led_animation_breathe_cur += breathe_step * breathe_dir;

            if (led_animation_breathe_cur >= BREATHE_MAX_STEP)
                breathe_dir = -1;
            else if (led_animation_breathe_cur <= BREATHE_MIN_STEP)
                breathe_dir = 1;

            //Brightness curve created for 256 steps, 0 - ~98%
            breathe_mult = 0.000015 * led_animation_breathe_cur * led_animation_breathe_cur;
            if (breathe_mult > 1) breathe_mult = 1;
            else if (breathe_mult < 0) breathe_mult = 0;
        }
    }

    uint8_t fcur = 0;
    uint8_t fmax = 0;

    //Frames setup
    while (f[fcur].end != 1)
    {
        fcur++; //Count frames
    }

    fmax = fcur; //Store total frames count

    struct user_led_t user_led_cur;
    while (led_cur < lede && led_this_run < led_per_run)
    {
        ro = 0;
        go = 0;
        bo = 0;

        uint8_t led_index = led_cur - led_map;                  // only this part differs from the original function.
        if(led_index < KEY_LED_COUNT){                          //
            user_led_cur = USER_LED[led_index];                 // `struct user_led_t USER_LED[]` is stored globally.
        }                                                       //
                                                                //
        if(led_index < KEY_LED_COUNT && user_led_cur.state){    // `user_led_cur` is just for convenience
            ro = user_led_cur.r;                                //
            go = user_led_cur.g;                                //
            bo = user_led_cur.b;                                //
        }                                                       //
        else if (led_lighting_mode == LED_MODE_KEYS_ONLY && led_cur->scan == 255)
        {
            //Do not act on this LED
        }
        else if (led_lighting_mode == LED_MODE_NON_KEYS_ONLY && led_cur->scan != 255)
        {
            //Do not act on this LED
        }
        else if (led_lighting_mode == LED_MODE_INDICATORS_ONLY)
        {
            //Do not act on this LED (Only show indicators)
        }
        else
        {
            //Act on LED
            for (fcur = 0; fcur < fmax; fcur++)
            {

                if (led_animation_orientation)
                {
                  po = led_cur->py;
                }
                else
                {
                  po = led_cur->px;
                }

                float pomod;
                pomod = (float)(g_tick % (uint32_t)(1000.0f / led_animation_speed)) / 10.0f * led_animation_speed;

                //Add in any moving effects
                if ((!led_animation_direction && f[fcur].ef & EF_SCR_R) || (led_animation_direction && (f[fcur].ef & EF_SCR_L)))
                {
                    pomod *= 100.0f;
                    pomod = (uint32_t)pomod % 10000;
                    pomod /= 100.0f;

                    po -= pomod;

                    if (po > 100) po -= 100;
                    else if (po < 0) po += 100;
                }
                else if ((!led_animation_direction && f[fcur].ef & EF_SCR_L) || (led_animation_direction && (f[fcur].ef & EF_SCR_R)))
                {
                    pomod *= 100.0f;
                    pomod = (uint32_t)pomod % 10000;
                    pomod /= 100.0f;
                    po += pomod;

                    if (po > 100) po -= 100;
                    else if (po < 0) po += 100;
                }

                //Check if LED's po is in current frame
                if (po < f[fcur].hs) continue;
                if (po > f[fcur].he) continue;
                //note: < 0 or > 100 continue

                //Calculate the po within the start-stop percentage for color blending
                po = (po - f[fcur].hs) / (f[fcur].he - f[fcur].hs);

                //Add in any color effects
                if (f[fcur].ef & EF_OVER)
                {
                    ro = (po * (f[fcur].re - f[fcur].rs)) + f[fcur].rs;// + 0.5;
                    go = (po * (f[fcur].ge - f[fcur].gs)) + f[fcur].gs;// + 0.5;
                    bo = (po * (f[fcur].be - f[fcur].bs)) + f[fcur].bs;// + 0.5;
                }
                else if (f[fcur].ef & EF_SUBTRACT)
                {
                    ro -= (po * (f[fcur].re - f[fcur].rs)) + f[fcur].rs;// + 0.5;
                    go -= (po * (f[fcur].ge - f[fcur].gs)) + f[fcur].gs;// + 0.5;
                    bo -= (po * (f[fcur].be - f[fcur].bs)) + f[fcur].bs;// + 0.5;
                }
                else
                {
                    ro += (po * (f[fcur].re - f[fcur].rs)) + f[fcur].rs;// + 0.5;
                    go += (po * (f[fcur].ge - f[fcur].gs)) + f[fcur].gs;// + 0.5;
                    bo += (po * (f[fcur].be - f[fcur].bs)) + f[fcur].bs;// + 0.5;
                }
            }
        }

        //Clamp values 0-255
        if (ro > 255) ro = 255; else if (ro < 0) ro = 0;
        if (go > 255) go = 255; else if (go < 0) go = 0;
        if (bo > 255) bo = 255; else if (bo < 0) bo = 0;

        if (led_animation_breathing)
        {
            ro *= breathe_mult;
            go *= breathe_mult;
            bo *= breathe_mult;
        }

        *led_cur->rgb.r = (uint8_t)ro;
        *led_cur->rgb.g = (uint8_t)go;
        *led_cur->rgb.b = (uint8_t)bo;

#ifdef USB_LED_INDICATOR_ENABLE
        if (keyboard_leds())
        {
            uint8_t kbled = keyboard_leds();
            if (
                #if USB_LED_NUM_LOCK_SCANCODE != 255
                (led_cur->scan == USB_LED_NUM_LOCK_SCANCODE && kbled & (1<<USB_LED_NUM_LOCK)) ||
                #endif //NUM LOCK
                #if USB_LED_CAPS_LOCK_SCANCODE != 255
                (led_cur->scan == USB_LED_CAPS_LOCK_SCANCODE && kbled & (1<<USB_LED_CAPS_LOCK)) ||
                #endif //CAPS LOCK
                #if USB_LED_SCROLL_LOCK_SCANCODE != 255
                (led_cur->scan == USB_LED_SCROLL_LOCK_SCANCODE && kbled & (1<<USB_LED_SCROLL_LOCK)) ||
                #endif //SCROLL LOCK
                #if USB_LED_COMPOSE_SCANCODE != 255
                (led_cur->scan == USB_LED_COMPOSE_SCANCODE && kbled & (1<<USB_LED_COMPOSE)) ||
                #endif //COMPOSE
                #if USB_LED_KANA_SCANCODE != 255
                (led_cur->scan == USB_LED_KANA_SCANCODE && kbled & (1<<USB_LED_KANA)) ||
                #endif //KANA
                (0))
            {
                if (*led_cur->rgb.r > 127) *led_cur->rgb.r = 0;
                else *led_cur->rgb.r = 255;
                if (*led_cur->rgb.g > 127) *led_cur->rgb.g = 0;
                else *led_cur->rgb.g = 255;
                if (*led_cur->rgb.b > 127) *led_cur->rgb.b = 0;
                else *led_cur->rgb.b = 255;
            }
        }
#endif //USB_LED_INDICATOR_ENABLE

        led_cur++;
        led_this_run++;
    }
}

#define KEY_STROKES_LENGTH 20
struct {
    bool alive;
    uint8_t led_id;
    uint32_t time;
} KEY_STROKES[KEY_STROKES_LENGTH] = {{}};




void set_led_rgb(uint8_t led_id, uint8_t r, uint8_t g, uint8_t b){
    issi3733_led_t *target_led = (led_map + led_id);
    *target_led->rgb.r = r;
    *target_led->rgb.g = g;
    *target_led->rgb.b = b;
}


uint8_t DISTANCE_FROM_LAST_KEYSTROKE[KEY_LED_COUNT+1];
void calculate_keystroke_distance(void){
    bool alive;
    uint8_t led_id, period_passed;
    uint32_t t;


    for(uint8_t i = 0; i <= KEY_LED_COUNT; ++i){
        DISTANCE_FROM_LAST_KEYSTROKE[i] = 0;
    }

    for(uint8_t i = 0; i < KEY_STROKES_LENGTH; ++i){
        if(KEY_STROKES[i].alive){
            t = timer_elapsed32(KEY_STROKES[i].time);
            alive = 0;
            led_id = KEY_STROKES[i].led_id;
            period_passed = t / USER_CONFIG.WAVE_PERIOD;

            uint8_t delta_period;
            for(uint8_t j = 1; j <= KEY_LED_COUNT; ++j){
                delta_period = period_passed - DISTANCE_MAP[led_id][j];
                if(( delta_period < USER_CONFIG.WAVE_FRONT_WIDTH) && (
                    DISTANCE_MAP[led_id][j] <= USER_CONFIG.TRAVEL_DISTANCE
                )){
                    switch(USER_CONFIG.PATTERN_INDEX){
                    case 3:
                    case 4:
                    case 5:
                    case 6:
                        DISTANCE_FROM_LAST_KEYSTROKE[j] += delta_period;
                        break;
                    default:
                        DISTANCE_FROM_LAST_KEYSTROKE[j] = 1;
                        break;
                    }
                    alive = 1;
                }
            }
            KEY_STROKES[i].alive = alive;
        }
    }
}

#define COLOR_PATTERN_RGB_COUNT 18
static uint8_t COLOR_PATTERNS[][COLOR_PATTERN_RGB_COUNT][3] = {
    { // default rainbow color
        {255,   0,   0}, {255,   0,   0}, {255, 127,   0},
        {255, 127,   0}, {255, 255,   0}, {255, 255,   0},
        {120, 255,   0}, {120, 255,   0}, {  0, 255,   0},
        {  0, 255,   0}, {  0, 255, 120}, {  0, 255, 120},
        {  0,   0, 255}, {  0,   0, 255}, { 75,   0, 130},
        { 75,   0, 130}, { 43,   0, 130}, { 43,   0, 130},
    }, { // light rainbow color
        {248,  12,  18}, {238,  17,   0}, {255,  51,  17},
        {255,  68,  32}, {255, 102,  68}, {255, 153,  51},
        {254, 174,  45}, {204, 187,  51}, {208, 195,  16},
        {170, 204,  34}, {105, 208,  37}, { 34, 204, 170},
        { 18, 189, 185}, { 17, 170, 187}, { 68,  68, 221},
        { 51,  17, 187}, { 59,  12, 189}, { 68,  34, 153},
    }, { // white flat
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
        {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
    }, { // white fade, cos curve
        {255, 255, 255}, {255, 255, 255}, {252, 252, 252},
        {247, 247, 247}, {240, 240, 240}, {232, 232, 232},
        {221, 221, 221}, {209, 209, 209}, {196, 196, 196},
        {181, 181, 181}, {164, 164, 164}, {147, 147, 147},
        {128, 128, 128}, {108, 108, 108}, { 88,  88,  88},
        { 66,  66,  66}, { 45,  45,  45}, { 23,  23,  23},
    },
};
static const uint8_t COLOR_PATTERNS_COUNT = (
        sizeof(COLOR_PATTERNS) / sizeof(COLOR_PATTERNS[0]));

void set_user_led_rgb(uint8_t i, uint8_t r, uint8_t g, uint8_t b){
    USER_LED[i-1].state = 1;
    USER_LED[i-1].r = r;
    USER_LED[i-1].g = g;
    USER_LED[i-1].b = b;
}
void unset_user_led_rgb(uint8_t i){
    USER_LED[i-1].state = 0;
}
void set_indicator_led_rgb(uint8_t i,
        uint8_t layer, uint8_t r, uint8_t g, uint8_t b){
    USER_LED[i-1].state |= 1 << layer;
    USER_LED[i-1].r = r;
    USER_LED[i-1].g = g;
    USER_LED[i-1].b = b;
}
void unset_indicator_led_rgb(uint8_t i, uint8_t layer){
    USER_LED[i-1].state &= ~(1 << layer);
}

void refresh_pattern_indicators(void){
    static uint8_t GRV_123456[] = {
        KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6,
    };

    if(layer_state >= 0x04){
        for(uint8_t i = 0; i < 7; ++i){
            if(i == USER_CONFIG.PATTERN_INDEX){
                set_indicator_led_rgb(ktli(GRV_123456[i]), 2, 0, 0, 255);
            } else{
                set_indicator_led_rgb(ktli(GRV_123456[i]), 2, 0, 255, 0);
            }
        }
    } else{
        for(uint8_t i = 0; i < 7; ++i){
            unset_indicator_led_rgb(ktli(GRV_123456[i]), 2);
        }
    }
}
void refresh_color_pattern_indicators(void){
    static uint8_t ZXCVBNM_COMM_DOT[] = {
        KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT,
    };

    if(layer_state >= 0x04){
        uint8_t (*c)[3] = &COLOR_PATTERNS[USER_CONFIG.COLOR_PATTERN_INDEX][0];
        for(uint8_t i = 0; i < 9; ++i){
            set_indicator_led_rgb(ktli(ZXCVBNM_COMM_DOT[i]),
                    2, c[i][0], c[i][1], c[i][2]);
        }
    } else{
        for(uint8_t i = 0; i < 9; ++i){
            unset_indicator_led_rgb(ktli(ZXCVBNM_COMM_DOT[i]), 2);
        }
    }
}

// Runs constantly in the background, in a loop.
void matrix_scan_user(void) {
    static uint32_t scan_timer = 0;
    static uint8_t last_layer = 0;

    uint8_t layer = 0;
    if(layer_state >= 0x04){
        layer = 2;
    } else if(layer_state >= 0x02){
        layer = 1;
    }

    calculate_keystroke_distance();


    #define USE_PATTERN 0
    #define BLACK_RGB 1
    #define COLOR_RGB 2
    uint8_t ci; // color index
    uint8_t *rgb;
    uint8_t handle_type;
    uint8_t distance;
    for(uint8_t i = 1; i <= KEY_LED_COUNT; ++i){
        if(USER_LED[i-1].state >= 2) continue;

        handle_type = USE_PATTERN;
        distance = DISTANCE_FROM_LAST_KEYSTROKE[i];

        switch(USER_CONFIG.PATTERN_INDEX){
        case 0: handle_type = USE_PATTERN; break;
        case 1: handle_type = distance ? USE_PATTERN : BLACK_RGB; break;
        case 2: handle_type = distance ? BLACK_RGB : USE_PATTERN; break;
        case 3: handle_type = distance ? COLOR_RGB : BLACK_RGB; break;
        case 4: handle_type = distance ? COLOR_RGB : USE_PATTERN; break;
        case 5:
        case 6: handle_type = distance ? COLOR_RGB : USE_PATTERN; break;
        }
        switch(handle_type){
        case USE_PATTERN: unset_user_led_rgb(i); break;
        case BLACK_RGB: set_user_led_rgb(i, 0, 0, 0); break;
        case COLOR_RGB:
            ci = (DISTANCE_FROM_LAST_KEYSTROKE[i] * COLOR_PATTERN_RGB_COUNT /
                    USER_CONFIG.WAVE_FRONT_WIDTH) % COLOR_PATTERN_RGB_COUNT;
            rgb = &COLOR_PATTERNS[USER_CONFIG.COLOR_PATTERN_INDEX][ci][0];

            set_user_led_rgb(i, rgb[0], rgb[1], rgb[2]);
            break;
        }
    }


    // could be moved to process_record_user()
    if(layer != last_layer){

        static uint8_t QWEASDP[] = {
            KC_Q, KC_W, KC_E, KC_A, KC_S, KC_D, KC_P,
        };
        static uint8_t YUIOHJKL[] = {
            KC_Y, KC_U, KC_I, KC_O, KC_H, KC_J, KC_K, KC_L,
        };

        switch(last_layer){
        case 1:
            for(uint8_t i = 0; i < 7; ++i){
                unset_indicator_led_rgb(ktli(QWEASDP[i]), 1);
            }
            break;
        case 2:
            for(uint8_t i = 0; i < 6; ++i){
                unset_indicator_led_rgb(ktli(QWEASDP[i]), 2);
            }
            for(uint8_t i = 0; i < 8; ++i){
                unset_indicator_led_rgb(ktli(YUIOHJKL[i]), 2);
            }
            unset_indicator_led_rgb(ktli(KC_TAB), 2);
            unset_indicator_led_rgb(ktli(KC_CAPS), 2);
            break;
        }


        switch(layer){
        case 1:
            for(uint8_t i = 0; i < 7; ++i){
                set_indicator_led_rgb(ktli(QWEASDP[i]), 1, 255, 0, 0);
            }
            break;
        case 2:
            for(uint8_t i = 0; i < 6; ++i){
                set_indicator_led_rgb(ktli(QWEASDP[i]), 2, 0, 255, 0);
            }
            for(uint8_t i = 0; i < 8; ++i){
                set_indicator_led_rgb(ktli(YUIOHJKL[i]), 2, 0, 255, 0);
            }
            set_indicator_led_rgb(ktli(KC_TAB), 2, 0, 255, 0);
            set_indicator_led_rgb(ktli(KC_CAPS), 2, 0, 255, 0);
            break;
        }

        refresh_pattern_indicators();
        refresh_color_pattern_indicators();
        last_layer = layer;
    }


    switch(layer){
    case 0:
        if(timer_elapsed32(scan_timer) > 2000){
            scan_timer = timer_read32();
        } else if(timer_elapsed32(scan_timer) > 1000){
            // set_user_led_rgb(ktli(KC_F5), 255, 255, 255);
        }
        break;
    case 1:
        break;
    case 2:
        break;
    }

};

#define MODS_SHIFT  (get_mods() & MOD_BIT(KC_LSHIFT) || get_mods() & MOD_BIT(KC_RSHIFT))
#define MODS_CTRL  (get_mods() & MOD_BIT(KC_LCTL) || get_mods() & MOD_BIT(KC_RCTRL))
#define MODS_ALT  (get_mods() & MOD_BIT(KC_LALT) || get_mods() & MOD_BIT(KC_RALT))

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    static uint32_t key_timer;


    switch (keycode) {
        case L_BRI:
            if (record->event.pressed) {
                if (LED_GCR_STEP > LED_GCR_MAX - gcr_desired) gcr_desired = LED_GCR_MAX;
                else gcr_desired += LED_GCR_STEP;
                if (led_animation_breathing) gcr_breathe = gcr_desired;
            }
            return false;
        case L_BRD:
            if (record->event.pressed) {
                if (LED_GCR_STEP > gcr_desired) gcr_desired = 0;
                else gcr_desired -= LED_GCR_STEP;
                if (led_animation_breathing) gcr_breathe = gcr_desired;
            }
            return false;
        case L_PTN:
            if (record->event.pressed) {
                if (led_animation_id == led_setups_count - 1) led_animation_id = 0;
                else led_animation_id++;
            }
            return false;
        case L_PTP:
            if (record->event.pressed) {
                if (led_animation_id == 0) led_animation_id = led_setups_count - 1;
                else led_animation_id--;
            }
            return false;
        case L_PSI:
            if (record->event.pressed) {
                led_animation_speed += ANIMATION_SPEED_STEP;
            }
            return false;
        case L_PSD:
            if (record->event.pressed) {
                led_animation_speed -= ANIMATION_SPEED_STEP;
                if (led_animation_speed < 0) led_animation_speed = 0;
            }
            return false;
        case L_T_MD:
            if (record->event.pressed) {
                led_lighting_mode++;
                if (led_lighting_mode > LED_MODE_MAX_INDEX) led_lighting_mode = LED_MODE_NORMAL;
            }
            return false;
        case L_T_ONF:
            if (record->event.pressed) {
                led_enabled = !led_enabled;
                I2C3733_Control_Set(led_enabled);
            }
            return false;
        case L_ON:
            if (record->event.pressed) {
                led_enabled = 1;
                I2C3733_Control_Set(led_enabled);
            }
            return false;
        case L_OFF:
            if (record->event.pressed) {
                led_enabled = 0;
                I2C3733_Control_Set(led_enabled);
            }
            return false;
        case L_T_BR:
            if (record->event.pressed) {
                led_animation_breathing = !led_animation_breathing;
                if (led_animation_breathing) {
                    gcr_breathe = gcr_desired;
                    led_animation_breathe_cur = BREATHE_MIN_STEP;
                    breathe_dir = 1;
                }
            }
            return false;
        case L_T_PTD:
            if (record->event.pressed) {
                led_animation_direction = !led_animation_direction;
            }
            return false;
        case U_T_AUTO:
            if (record->event.pressed && MODS_SHIFT && MODS_CTRL) {
                TOGGLE_FLAG_AND_PRINT(usb_extra_manual, "USB extra port manual mode");
            }
            return false;
        case U_T_AGCR:
            if (record->event.pressed && MODS_SHIFT && MODS_CTRL) {
                TOGGLE_FLAG_AND_PRINT(usb_gcr_auto, "USB GCR auto mode");
            }
            return false;
        case DBG_TOG:
            if (record->event.pressed) {
                TOGGLE_FLAG_AND_PRINT(debug_enable, "Debug mode");
            }
            return false;
        case DBG_MTRX:
            if (record->event.pressed) {
                TOGGLE_FLAG_AND_PRINT(debug_matrix, "Debug matrix");
            }
            return false;
        case DBG_KBD:
            if (record->event.pressed) {
                TOGGLE_FLAG_AND_PRINT(debug_keyboard, "Debug keyboard");
            }
            return false;
        case DBG_MOU:
            if (record->event.pressed) {
                TOGGLE_FLAG_AND_PRINT(debug_mouse, "Debug mouse");
            }
            return false;
        case MD_BOOT:
            if (record->event.pressed) {
                key_timer = timer_read32();
            } else {
                if (timer_elapsed32(key_timer) >= 500) {
                    reset_keyboard();
                }
            }
            return false;

















        case L_SP_PR: // previous dripple pattern
        case L_SP_NE: // next dripple pattern
            if (record->event.pressed) {
#define PATTERN_COUNT 7
                uint8_t incre = keycode == L_SP_PR ? PATTERN_COUNT-1 : 1;
                USER_CONFIG.PATTERN_INDEX += incre;
                USER_CONFIG.PATTERN_INDEX %= PATTERN_COUNT;

                if(USER_CONFIG.PATTERN_INDEX <= 4){
                    USER_CONFIG.TRAVEL_DISTANCE = 25;
                    USER_CONFIG.COLOR_PATTERN_INDEX = 0;
                    USER_CONFIG.WAVE_PERIOD = 50;
                }

                switch(USER_CONFIG.PATTERN_INDEX){
                case 0: // None
                    break;
                case 1: // background off, wave on
                    USER_CONFIG.WAVE_FRONT_WIDTH = 2;
                    break;
                case 2: // background on, wave off
                    USER_CONFIG.WAVE_FRONT_WIDTH = 5;
                    break;
                case 3: // background off, rainbow wave
                    USER_CONFIG.WAVE_FRONT_WIDTH = 10;
                    break;
                case 4: // background on, rainbow wave
                    USER_CONFIG.WAVE_FRONT_WIDTH = 10;
                    break;
                case 5:
                    USER_CONFIG.WAVE_FRONT_WIDTH = 10;

                    USER_CONFIG.COLOR_PATTERN_INDEX = 2;
                    USER_CONFIG.TRAVEL_DISTANCE = 0;
                    USER_CONFIG.WAVE_PERIOD = 100;
                    break;
                case 6:
                    USER_CONFIG.WAVE_FRONT_WIDTH = 25;

                    USER_CONFIG.COLOR_PATTERN_INDEX = 3;
                    USER_CONFIG.TRAVEL_DISTANCE = 2;
                    USER_CONFIG.WAVE_PERIOD = 10;
                    break;
                }

                // remove effect after changing pattern
                for(int i = 0; i < KEY_STROKES_LENGTH; ++i){
                    KEY_STROKES[i].alive = 0;
                }
                refresh_pattern_indicators();
                refresh_color_pattern_indicators();
            }
            return false;
        case L_SP_WD:
        case L_SP_NW:
            if(record->event.pressed){
                short incre = keycode == L_SP_WD ? 1 : -1;
                USER_CONFIG.WAVE_FRONT_WIDTH += incre;
                if(USER_CONFIG.WAVE_FRONT_WIDTH < 1){
                    USER_CONFIG.WAVE_FRONT_WIDTH = 1;
                }
            }
            return false;
        case L_SP_FA:
        case L_SP_SL:
            if(record->event.pressed){
                short incre = keycode == L_SP_FA ? -1 : 1;

                USER_CONFIG.WAVE_PERIOD += 10 * incre;
                if(USER_CONFIG.WAVE_PERIOD < 10){
                    USER_CONFIG.WAVE_PERIOD = 10;
                }
            }
            return false;
        // these are the keys not in range 0x04 - 0x52
        case L_CP_PR:
        case L_CP_NX:
            if(record->event.pressed){
                uint8_t incre = keycode == L_CP_PR ? COLOR_PATTERNS_COUNT - 1 : 1;
                USER_CONFIG.COLOR_PATTERN_INDEX += incre;
                USER_CONFIG.COLOR_PATTERN_INDEX %= COLOR_PATTERNS_COUNT;
                refresh_color_pattern_indicators();
            }
            return false;
        default:
            if (record->event.pressed){
                uint8_t led_id = ktli(keycode);
                if(led_id){
                    for(int i = 0; i < KEY_STROKES_LENGTH; ++i){
                        if(!KEY_STROKES[i].alive){
                            KEY_STROKES[i].alive = 1;
                            KEY_STROKES[i].led_id = led_id;
                            KEY_STROKES[i].time = timer_read32();
                            break;
                        }
                    }
                }
            }
            return true; //Process all other keycodes normally
    }
}