Lights Out keymap for winry25t (#20538)

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

keyboards/winry/winry25tc/keymaps/lightsout/keymap.c

@@ -0,0 +1,136 @@
+/* Copyright 2023 Tom Parker-Shemilt <palfrey@tevp.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+
+#include QMK_KEYBOARD_H
+
+// clang-format off
+
+// Exact keymap is irrelevant as we're using rows/cols
+// but we need _something_ set so we're using no-ops
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        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_NO, KC_NO, KC_NO, KC_NO
+    )};
+
+bool tiles[5][5] = {
+    {false, false, false, false, false},
+    {false, false, false, false, false},
+    {false, false, false, false, false},
+    {false, false, false, false, false},
+    {false, false, false, false, false},
+};
+
+/* Because snake pattern of leds */
+const uint8_t remap[25] = {
+    20,21,22,23,24,
+    19,6,7,8,9,
+    18,5,0,1,10,
+    17,4,3,2,11,
+    16,15,14,13,12,
+};
+
+// clang-format on
+
+bool is_blank(void) {
+    for (uint8_t y = 0; y < 5; y++) {
+        for (uint8_t x = 0; x < 5; x++) {
+            if (tiles[x][y]) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+void do_move(uint8_t x, uint8_t y) {
+    tiles[x][y] ^= true;
+    if (x > 0) {
+        tiles[x - 1][y] ^= true;
+    }
+    if (y > 0) {
+        tiles[x][y - 1] ^= true;
+    }
+    if (x < 4) {
+        tiles[x + 1][y] ^= true;
+    }
+    if (y < 4) {
+        tiles[x][y + 1] ^= true;
+    }
+}
+
+void refresh_leds(void) {
+    for (uint8_t y = 0; y < 5; y++) {
+        for (uint8_t x = 0; x < 5; x++) {
+            uint8_t tile  = tiles[x][y];
+            uint8_t index = (y * 5) + x;
+            if (tile) {
+                setrgb(RGB_RED, &led[remap[index]]);
+            } else {
+                setrgb(RGB_WHITE, &led[remap[index]]);
+            }
+        }
+    }
+    rgblight_set();
+}
+
+uint8_t initial_moves = 1;
+
+void start_game(void) {
+    rgblight_mode(RGBLIGHT_MODE_STATIC_LIGHT);
+    srand(timer_read32());
+    while (true) {
+        for (uint8_t i = 0; i < initial_moves; i++) {
+            do_move(rand() % 5, rand() % 5);
+        }
+        if (!is_blank()) {
+            // Catch the "we picked the same location 2*N times" case
+            break;
+        }
+    }
+    refresh_leds();
+}
+
+void keyboard_post_init_user(void) {
+    rgblight_enable_noeeprom();
+    start_game();
+}
+
+bool won = false;
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    if (record->event.pressed) {
+        if (won) {
+            initial_moves++;
+            won = false;
+            start_game();
+        } else {
+            uint8_t x = record->event.key.col;
+            uint8_t y = record->event.key.row;
+            do_move(x, y);
+            if (is_blank()) {
+                rgblight_mode(RGBLIGHT_MODE_RAINBOW_SWIRL);
+                won = true;
+            }
+        }
+    }
+    refresh_leds();
+    return true;
+}