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/*
* 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 <time.h>
#endif
#include <stdlib.h>
#include <string.h>
#include "tarot_face.h"
#define NUM_TAROT_CARDS 22
#define TAROT_ANIMATION_TICK_FREQUENCY 8
// --------------
// Custom methods
// --------------
static char *major_arcana[NUM_TAROT_CARDS] = {
" 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",
"W orld",
};
static void tarot_display(tarot_state_t *state) {
char buf[8];
if (state->drawn_cards[0] != 0xff) {
sprintf(buf, "%d", state->current_card + 1);
watch_display_string(buf, 3);
sprintf(buf, "%s", major_arcana[state->drawn_cards[state->current_card]]);
watch_display_string(buf, 4);
if (state->drawn_cards[state->current_card] == NUM_TAROT_CARDS - 1) {
// special tweak for "World"
watch_set_pixel(1, 20);
watch_set_pixel(2, 21);
watch_set_pixel(1, 17);
}
}
}
static uint8_t draw_one_card(void) {
// Emulator: use rand. Hardware: use arc4random.
#if __EMSCRIPTEN__
return rand() % NUM_TAROT_CARDS;
#else
return arc4random_uniform(NUM_TAROT_CARDS);
#endif
}
static void pick_cards(tarot_state_t *state) {
// this is all a bit verbose but I prefer simplicity over clever tricks
state->drawn_cards[0] = draw_one_card();
state->drawn_cards[1] = draw_one_card();
while (state->drawn_cards[1] == state->drawn_cards[0])
state->drawn_cards[1] = draw_one_card();
state->drawn_cards[2] = draw_one_card();
while (state->drawn_cards[2] == state->drawn_cards[1] ||
state->drawn_cards[2] == state->drawn_cards[0])
state->drawn_cards[2] = draw_one_card();
state->current_card = 0;
}
static void display_animation(tarot_state_t *state) {
if (state->is_picking) {
if (state->animation_frame == 0) {
watch_display_string(" ", 7);
watch_set_pixel(1, 4);
watch_set_pixel(1, 6);
state->animation_frame = 1;
} else if (state->animation_frame == 1) {
watch_clear_pixel(1, 4);
watch_clear_pixel(1, 6);
watch_set_pixel(2, 4);
watch_set_pixel(0, 6);
state->animation_frame = 2;
} else if (state->animation_frame == 2) {
watch_clear_pixel(2, 4);
watch_clear_pixel(0, 6);
watch_set_pixel(2, 5);
watch_set_pixel(0, 5);
state->animation_frame = 3;
} else if (state->animation_frame == 3) {
state->animation_frame = 0;
state->is_picking = false;
movement_request_tick_frequency(1);
tarot_display(state);
}
}
}
// ---------------------------
// Standard watch face methods
// ---------------------------
void tarot_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
(void) settings;
(void) watch_face_index;
if (*context_ptr == NULL) {
*context_ptr = malloc(sizeof(tarot_state_t));
memset(*context_ptr, 0, sizeof(tarot_state_t));
}
// Emulator only: Seed random number generator
#if __EMSCRIPTEN__
srand(time(NULL));
#endif
}
void tarot_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
tarot_state_t *state = (tarot_state_t *)context;
watch_display_string("TA", 0);
state->current_card = 0;
state->drawn_cards[0] = 0xff;
}
bool tarot_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
(void) settings;
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:
watch_display_string(" draWW", 4);
watch_clear_pixel(2, 3);
watch_clear_pixel(1, 4);
break;
case EVENT_TICK:
display_animation(state);
break;
case EVENT_MODE_BUTTON_UP:
movement_move_to_next_face();
break;
case EVENT_LIGHT_BUTTON_UP:
// Change how many sides the die has
if (state->drawn_cards[0] != 0xff) {
state->current_card = (state->current_card + 1) % 3;
tarot_display(state);
}
break;
case EVENT_ALARM_BUTTON_UP:
// Draw cards
watch_display_string(" ", 4);
pick_cards(state);
state->is_picking = true;
// card picking animation begins on next tick and new cards will be displayed on completion
movement_request_tick_frequency(TAROT_ANIMATION_TICK_FREQUENCY);
break;
case EVENT_LOW_ENERGY_UPDATE:
watch_display_string("SLEEP ", 4);
break;
default:
break;
}
return true;
}
void tarot_face_resign(movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
}
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