/* * MIT License * * Copyright (c) 2022 Jeremy O'Brien * Base code copied from Spencer Bywater's probability face * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ // Emulator only: need time() to seed the random number generator. #if __EMSCRIPTEN__ #include #endif #include #include #include "tarot_face.h" #define TAROT_ANIMATION_TICK_FREQUENCY 8 #define FLIPPED_BIT_POS 7 #define FLIPPED_MASK ((uint8_t)(1 << FLIPPED_BIT_POS)) // -------------- // Custom methods // -------------- static char fallback_major_arcana[][7] = { " FOOL ", "Mgcian", "HPrsts", "En&prs", // Empress "En&por", // Emperor "Hiroph", "Lovers", "Chriot", "Strgth", "Hrn&it", // Hermit " Frtun", "Justce", "Hangn&", // Hangman " death", " tmprn", " devil", " Tower", " Star", "n&OON ", // Moon " Sun ", "Jdgmnt", " World", }; #define NUM_MAJOR_ARCANA (sizeof(fallback_major_arcana) / sizeof(*fallback_major_arcana)) static char custom_major_arcana[][7] = { "Fool ", "Mgcian", "HPrsts", "Empres", "Empror", "Hiroph", "Lovers", "Chriot", "Strgth", "Hermit", "Fortun", "Justce", "Hangmn", " death", "Tmprnc", " devil", " Tower", "Star ", " Moon", " Sun ", "Jdgmnt", " World", }; static char suits[][7] = { " wands", " cups", "swords", " coins", }; #define NUM_MINOR_ARCANA 56 #define NUM_CARDS_PER_SUIT 14 #define NUM_TAROT_CARDS (NUM_MAJOR_ARCANA + NUM_MINOR_ARCANA) static void init_deck(tarot_state_t *state) { memset(state->drawn_cards, 0xff, sizeof(state->drawn_cards)); state->current_card = 0; } static void tarot_display(tarot_state_t *state) { char smallbuf[4]; char *start_end_string; char *fallback_start_end_string; uint8_t card; bool flipped; // deck is initialized; show current draw mode and return if (state->drawn_cards[0] == 0xff) { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_clear_indicator(WATCH_INDICATOR_SIGNAL); } else { watch_clear_indicator(WATCH_INDICATOR_ARROWS); } watch_display_text_with_fallback(WATCH_POSITION_TOP_LEFT, "Tar", "TA"); sprintf(smallbuf, "%2d", state->num_cards_to_draw); watch_display_text(WATCH_POSITION_TOP_RIGHT, smallbuf); if (state->major_arcana_only) { watch_display_text_with_fallback(WATCH_POSITION_BOTTOM, " Major", "n&ajor"); } else { watch_display_text(WATCH_POSITION_BOTTOM, " All"); } return; } // show a special status if we're looking at the first or last card in the spread if (state->current_card == 0) { start_end_string = "Str"; fallback_start_end_string = "St"; } else if (state->current_card == state->num_cards_to_draw - 1) { start_end_string = "End"; fallback_start_end_string = "En"; } else { start_end_string = " "; fallback_start_end_string = " "; } // figure out the card we're showing card = state->drawn_cards[state->current_card]; flipped = (card & FLIPPED_MASK) ? true : false; // check flipped bit card &= ~FLIPPED_MASK; // remove the flipped bit watch_display_text_with_fallback(WATCH_POSITION_TOP, start_end_string, fallback_start_end_string); if (card < NUM_MAJOR_ARCANA) { // major arcana // show no rank, card name watch_display_text(WATCH_POSITION_TOP_RIGHT, " "); watch_display_text_with_fallback(WATCH_POSITION_BOTTOM, custom_major_arcana[card], fallback_major_arcana[card]); } else { // minor arcana uint8_t suit = (card - NUM_MAJOR_ARCANA) / NUM_CARDS_PER_SUIT; uint8_t rank = ((card - NUM_MAJOR_ARCANA) % NUM_CARDS_PER_SUIT) + 1; // show start/end, rank + suit sprintf(smallbuf, "%2d", rank); watch_display_text(WATCH_POSITION_TOP_RIGHT, smallbuf); watch_display_text(WATCH_POSITION_BOTTOM, suits[suit]); } if (flipped) { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_set_indicator(WATCH_INDICATOR_SIGNAL); } else { watch_set_indicator(WATCH_INDICATOR_ARROWS); } } else { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_clear_indicator(WATCH_INDICATOR_SIGNAL); } else { watch_clear_indicator(WATCH_INDICATOR_ARROWS); } } } static uint8_t get_rand_num(uint8_t num_values) { // Emulator: use rand. Hardware: use arc4random. #if __EMSCRIPTEN__ return rand() % num_values; #else return arc4random_uniform(num_values); #endif } static uint8_t draw_one_card(tarot_state_t *state) { if (state->major_arcana_only) { return get_rand_num(NUM_MAJOR_ARCANA); } else { return get_rand_num(NUM_TAROT_CARDS); } } static bool already_drawn(tarot_state_t *state, uint8_t drawn_card) { for (int i = 0; state->drawn_cards[i] != 0xff && i < state->num_cards_to_draw; i++) { if ((state->drawn_cards[i] & ~FLIPPED_MASK) == drawn_card) { return true; } } return false; } static void pick_cards(tarot_state_t *state) { uint8_t card; for (int i = 0; i < state->num_cards_to_draw; i++) { card = draw_one_card(state); while (already_drawn(state, card)) { card = draw_one_card(state); } card |= get_rand_num(2) << FLIPPED_BIT_POS; // randomly flip the card state->drawn_cards[i] = card; } } static void display_animation(tarot_state_t *state) { watch_display_text(WATCH_POSITION_SECONDS, " "); if (state->animation_frame == 0) { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_set_pixel(1, 4); // 9F watch_set_pixel(1, 6); // 9C } else { watch_set_pixel(2, 6); // 9F watch_set_pixel(2, 7); // 9C } state->animation_frame = 1; } else if (state->animation_frame == 1) { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_clear_pixel(1, 4); // 9F watch_clear_pixel(1, 6); // 9C watch_set_pixel(2, 4); // 9A watch_set_pixel(0, 6); // 9D } else { watch_clear_pixel(2, 6); // 9F watch_clear_pixel(2, 7); // 9C watch_set_pixel(3, 6); // 9A watch_set_pixel(0, 7); // 9D } state->animation_frame = 2; } else if (state->animation_frame == 2) { if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_clear_pixel(2, 4); // 9A watch_clear_pixel(0, 6); // 9D watch_set_pixel(2, 5); // 9B watch_set_pixel(0, 5); // 9E } else { watch_clear_pixel(3, 6); // 9A watch_clear_pixel(0, 6); // 9D watch_set_pixel(3, 7); // 9B watch_set_pixel(0, 6); // 9E } state->animation_frame = 3; } else if (state->animation_frame == 3) { state->animation_frame = 0; movement_request_tick_frequency(1); state->is_picking = false; tarot_display(state); } } // --------------------------- // Standard watch face methods // --------------------------- void tarot_face_setup(uint8_t watch_face_index, void ** context_ptr) { (void) watch_face_index; if (*context_ptr == NULL) { *context_ptr = malloc(sizeof(tarot_state_t)); memset(*context_ptr, 0, sizeof(tarot_state_t)); tarot_state_t *state = (tarot_state_t *)*context_ptr; state->major_arcana_only = true; state->num_cards_to_draw = 3; } // Emulator only: Seed random number generator #if __EMSCRIPTEN__ srand(time(NULL)); #endif } void tarot_face_activate(void *context) { tarot_state_t *state = (tarot_state_t *)context; watch_display_text_with_fallback(WATCH_POSITION_TOP, "Tarot", "TA"); init_deck(state); } bool tarot_face_loop(movement_event_t event, void *context) { tarot_state_t *state = (tarot_state_t *)context; if (state->is_picking && event.event_type != EVENT_TICK) { return true; } switch (event.event_type) { case EVENT_ACTIVATE: if (watch_sleep_animation_is_running()) watch_stop_sleep_animation(); tarot_display(state); break; case EVENT_TICK: if (state->is_picking) { display_animation(state); } break; case EVENT_LIGHT_BUTTON_UP: if (state->drawn_cards[0] == 0xff) { // deck is inited; cycle through # cards to draw state->num_cards_to_draw++; if (state->num_cards_to_draw > 10) { state->num_cards_to_draw = 3; } } else { // cycle through the drawn cards state->current_card = (state->current_card + 1) % state->num_cards_to_draw; } tarot_display(state); break; case EVENT_LIGHT_LONG_PRESS: if (state->drawn_cards[0] == 0xff) { // at main screen; cycle major arcana mode state->major_arcana_only = !state->major_arcana_only; } else { // at card view screen; go back to draw screen init_deck(state); } tarot_display(state); break; case EVENT_ALARM_BUTTON_UP: // Draw cards watch_display_text(WATCH_POSITION_BOTTOM, " "); if (watch_get_lcd_type() == WATCH_LCD_TYPE_CLASSIC) { watch_clear_indicator(WATCH_INDICATOR_SIGNAL); } else { watch_clear_indicator(WATCH_INDICATOR_ARROWS); } init_deck(state); pick_cards(state); // card picking animation begins on next tick and new cards will be displayed on completion state->is_picking = true; movement_request_tick_frequency(TAROT_ANIMATION_TICK_FREQUENCY); break; case EVENT_LOW_ENERGY_UPDATE: if (!watch_sleep_animation_is_running()) { watch_start_sleep_animation(1000); } break; case EVENT_LIGHT_BUTTON_DOWN: // don't light up every time light is hit break; default: movement_default_loop_handler(event); break; } return true; } void tarot_face_resign(void *context) { (void) context; }