793 lines
24 KiB
C
793 lines
24 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2023 Tobias Raayoni Last / @randogoth
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "toss_up_face.h"
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#if __EMSCRIPTEN__
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#include <time.h>
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#else
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#include "saml22j18a.h"
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#endif
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static const char heads[] = { '8', 'h', '4', 'E', '(' };
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static const char tails[] = { '0', '+', 'N', '3', ')' };
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static const uint8_t dd[] = {2, 4, 6, 8, 10,12,20,24,30,32,36,48,99};
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static void _roll_dice_multiple(char* result, uint8_t* dice, uint8_t num_dice);
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static void _sort_coins(char* token, uint8_t num_bits, uint8_t bits, char* heads, char* tails);
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void _display_coins(char* token, bool* bit_array, uint8_t length, toss_up_state_t *state);
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static void _toss_up_face_display(toss_up_state_t *state);
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static void _dice_animation(toss_up_state_t *state);
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static void _coin_animation(toss_up_state_t *state);
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// PUBLIC FUNCTIONS ///////////////////////////////////////////////////////////
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void toss_up_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
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(void) watch_face_index;
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(void) settings;
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if (*context_ptr == NULL) {
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*context_ptr = malloc(sizeof(toss_up_state_t));
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memset(*context_ptr, 0, sizeof(toss_up_state_t));
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toss_up_state_t *state = (toss_up_state_t *)*context_ptr;
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// defaults
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state->coin_num = 1;
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state->dice_num = 1;
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state->dice_sides[0] = 6;
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state->dice_sides[1] = 6;
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state->dice_sides[2] = 6;
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state->coin_style[0] = '8';
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state->coin_style[1] = '0';
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}
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}
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void toss_up_face_activate(movement_settings_t *settings, void *context) {
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(void) settings;
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(void) context;
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}
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bool toss_up_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
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toss_up_state_t *state = (toss_up_state_t *)context;
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uint8_t i = 0;
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switch (event.event_type) {
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case EVENT_ACTIVATE:
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watch_display_string(" Coins ", 0);
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break;
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case EVENT_TICK:
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if ( state->animate ) {
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state->animation = (state->animation + 1);
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_toss_up_face_display(state);
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}
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break;
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case EVENT_LIGHT_BUTTON_DOWN:
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break;
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case EVENT_LIGHT_BUTTON_UP:
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if ( state->animate ) break;
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// change between coins and dice
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if ( state->mode <= 1 ) state->mode = 2;
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else if ( state->mode >= 2 ) state->mode = 0;
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_toss_up_face_display(state);
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break;
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case EVENT_ALARM_BUTTON_UP:
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// toss
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if ( state->animate ) break;
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switch (state->mode) {
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case 0:
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state->mode++;
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// fall through
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case 1:
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state->animate = true;
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for (i = 0; i < state->coin_num; i++) {
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state->coins[i] = divine_bit();
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}
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break;
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case 2:
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state->mode++;
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// fall through
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case 3:
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state->animate = true;
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for (i = 0; i < state->dice_num; i++) {
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state->dice[i] = roll_dice(state->dice_sides[i]);
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}
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break;
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default:
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break;
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}
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_toss_up_face_display(state);
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break;
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case EVENT_LIGHT_LONG_PRESS:
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if ( state->animate ) break;
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state->animate = false;
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switch (state->mode) {
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case 0: // change to default coin style
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state->coin_style[0] = heads[0];
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state->coin_style[1] = tails[0];
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state->coinface = 0;
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break;
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case 1: // change the coin style
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state->coinface = (state->coinface + 1) % 5;
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state->coin_style[0] = heads[state->coinface];
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state->coin_style[1] = tails[state->coinface];
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break;
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case 2: // change to default dice sides
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state->dice_sides[0] = 6;
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state->dice_sides[1] = 6;
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state->dice_sides[2] = 6;
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state->dd = 0;
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break;
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case 3: // change the sides of the dice
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state->dd = (state->dd + 1) % 13;
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state->dice_sides[state->dice_num-1] = dd[state->dd];
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state->dice[state->dice_num-1] = dd[state->dd];
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break;
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default:
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break;
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}
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_toss_up_face_display(state);
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break;
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case EVENT_ALARM_LONG_PRESS:
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if ( state->animate ) break;
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state->animate = false;
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switch (state->mode) {
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case 0: // back to one coin
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state->coin_num = 1;
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break;
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case 1: // up to 6 coins total
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state->coin_num = (state->coin_num % 6) + 1;
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break;
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case 2: // back to one dice
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state->dice_num = 1;
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break;
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case 3: // add up to 3 dice total
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state->dice_num = (state->dice_num % 3) + 1;
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state->dd = 0;
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break;
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default:
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break;
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}
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_toss_up_face_display(state);
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break;
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default:
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return movement_default_loop_handler(event, settings);
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}
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return true;
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}
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void toss_up_face_resign(movement_settings_t *settings, void *context) {
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(void) settings;
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(void) context;
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}
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// STATIC FUNCTIONS ///////////////////////////////////////////////////////////
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/** @brief handles the display
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*/
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static void _toss_up_face_display(toss_up_state_t *state) {
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char buf[11] = {0};
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char token[7] = {0};
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switch ( state->mode ) {
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case 0: // coins title
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sprintf(buf, " Coins ");
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break;
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case 1: // coins divination
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_coin_animation(state);
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if ( !state->animate ) {
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watch_clear_display();
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_display_coins(token, state->coins, state->coin_num, state);
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sprintf(buf, " %s", token);
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}
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break;
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case 2: // dice title
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sprintf(buf, " Dice ");
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break;
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case 3: // dice divination
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_dice_animation(state);
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if ( !state->animate ) {
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_roll_dice_multiple(token, state->dice, state->dice_num + 1);
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sprintf(buf, " %s", token);
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}
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break;
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default:
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break;
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}
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watch_display_string(buf, 0);
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}
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/** @brief divination method to derive a bit from 32 TRNG bits
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*/
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uint8_t divine_bit(void) {
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uint32_t stalks;
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do { // modulo bias filter
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stalks = get_true_entropy(); // get 32 TRNG bits as stalks
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} while (stalks >= INT32_MAX || stalks <= 0);
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uint8_t pile1_xor = 0;
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uint8_t pile2_xor = 0;
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// Divide the stalks into two piles, alternating ends
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for (uint8_t i = 0; i < 16; i++) {
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uint8_t left_bit = (stalks >> (31 - 2*i)) & 1;
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uint8_t right_bit = (stalks >> (30 - 2*i)) & 1;
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if (i % 2 == 0) {
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pile1_xor ^= left_bit;
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pile2_xor ^= right_bit;
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} else {
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pile1_xor ^= right_bit;
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pile2_xor ^= left_bit;
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}
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}
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// Take the XOR of the pile results
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uint8_t result_xor = pile1_xor ^ pile2_xor;
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// Output 1 if result_xor is 1, 0 otherwise
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return result_xor;
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}
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/** @brief get 32 True Random Number bits
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*/
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uint32_t get_true_entropy(void) {
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#if __EMSCRIPTEN__
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return rand() % INT32_MAX;
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#else
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hri_mclk_set_APBCMASK_TRNG_bit(MCLK);
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hri_trng_set_CTRLA_ENABLE_bit(TRNG);
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while (!hri_trng_get_INTFLAG_reg(TRNG, TRNG_INTFLAG_DATARDY)); // Wait for TRNG data to be ready
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hri_trng_clear_CTRLA_ENABLE_bit(TRNG);
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hri_mclk_clear_APBCMASK_TRNG_bit(MCLK);
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return hri_trng_read_DATA_reg(TRNG); // Read a single 32-bit word from TRNG and return it
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#endif
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}
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// COIN FUNCTIONS /////////////////////////////////////////////////////////////
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/** @brief sort tossed coins into a pile of heads and a pile of tails
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*/
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static void _sort_coins(char* token, uint8_t num_bits, uint8_t bits, char* heads, char* tails) {
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uint8_t num_ones = 0;
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for (uint8_t i = 0; i < num_bits; i++) {
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if ((bits >> i) & 1) {
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*token++ = *heads;
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num_ones++;
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}
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}
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if ( num_bits < 6 ) {
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for (uint8_t i = 0; i < (6 - num_bits); i++) {
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*token++ = ' ';
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}
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}
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for (uint8_t i = 0; i < (num_bits - num_ones); i++) {
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*token++ = *tails;
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}
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}
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/** @brief convert bool array of coinflips to integer for sorting
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*/
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void _display_coins(char* token, bool* bit_array, uint8_t length, toss_up_state_t *state) {
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uint8_t bits = 0;
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for (uint8_t i = 0; i < length; i++) {
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if (bit_array[i]) {
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bits |= (1 << (length - 1 - i));
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}
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}
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_sort_coins(token, length, bits, &state->coin_style[0], &state->coin_style[1]);
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}
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/** @brief coin animation
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*/
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static void _coin_animation(toss_up_state_t *state) {
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bool heads = false;
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bool tails = false;
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for (uint8_t i = 0; i < state->coin_num; i++) {
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if (state->coins[i] == true) {
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heads = true;
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} else {
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tails = true;
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}
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}
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movement_request_tick_frequency(32);
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switch ( state->animation ) {
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case 0:
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watch_display_string(" ", 4);
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if ( heads ) {
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watch_set_pixel(0, 18);
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watch_set_pixel(2, 18);
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} else {
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state->animation = 12;
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}
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break;
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case 1:
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if ( heads ) {
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watch_set_pixel(1, 18);
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}
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break;
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case 2:
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if ( heads ) {
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watch_set_pixel(0, 19);
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watch_set_pixel(2, 19);
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}
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break;
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case 3:
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if ( heads ) {
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watch_clear_pixel(0, 18);
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watch_clear_pixel(2, 18);
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}
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break;
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case 4:
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if ( heads ) {
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watch_clear_pixel(1, 18);
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}
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break;
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case 5:
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if ( heads ) {
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watch_clear_pixel(0, 19);
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watch_clear_pixel(2, 19);
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watch_set_pixel(1, 17);
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watch_set_pixel(0, 20);
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}
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break;
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case 6:
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if ( heads ) {
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watch_set_pixel(2, 20);
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watch_set_pixel(0, 21);
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}
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break;
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case 7:
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if ( heads ) {
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watch_set_pixel(1, 21);
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watch_set_pixel(2, 21);
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}
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break;
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case 8:
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if ( heads ) {
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watch_clear_pixel(1, 17);
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watch_clear_pixel(0, 20);
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}
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break;
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case 9:
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if ( heads ) {
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watch_clear_pixel(2, 20);
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watch_clear_pixel(0, 21);
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}
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break;
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case 10:
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if ( heads ) {
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watch_clear_pixel(1, 21);
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watch_clear_pixel(2, 21);
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watch_set_pixel(1, 22);
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watch_set_pixel(2, 22);
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}
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break;
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case 11:
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if ( heads ) {
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watch_set_pixel(0, 22);
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}
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break;
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case 12:
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if ( heads ) {
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watch_set_pixel(2, 23);
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watch_set_pixel(0, 23);
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}
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if ( tails ) {
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watch_set_pixel(0, 18);
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watch_set_pixel(2, 18);
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}
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break;
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case 13:
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if ( heads ) {
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watch_clear_pixel(1, 22);
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watch_clear_pixel(2, 22);
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}
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if ( tails ) {
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watch_set_pixel(1, 18);
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}
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break;
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case 14:
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if ( heads ) {
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watch_clear_pixel(0, 22);
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}
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if ( tails ) {
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watch_set_pixel(0, 19);
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watch_set_pixel(2, 19);
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}
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break;
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case 15:
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if ( heads ) {
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watch_clear_pixel(2, 23);
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watch_clear_pixel(0, 23);
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watch_set_pixel(2, 0);
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watch_set_pixel(1, 0);
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}
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if ( tails ) {
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watch_clear_pixel(0, 18);
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watch_clear_pixel(2, 18);
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}
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break;
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case 16:
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if ( heads ) {
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watch_set_pixel(2, 1);
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watch_set_pixel(0, 0);
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}
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if ( tails ) {
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watch_clear_pixel(1, 18);
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}
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break;
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case 17:
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if ( heads ) {
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watch_set_pixel(2, 10);
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watch_set_pixel(0, 1);
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}
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if ( tails ) {
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watch_clear_pixel(0, 19);
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watch_clear_pixel(2, 19);
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watch_set_pixel(1, 17);
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watch_set_pixel(0, 20);
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}
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break;
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case 18:
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if ( heads ) {
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watch_clear_pixel(2, 0);
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watch_clear_pixel(1, 0);
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}
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if ( tails ) {
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watch_set_pixel(2, 20);
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watch_set_pixel(0, 21);
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}
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break;
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case 19:
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if ( heads ) {
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watch_clear_pixel(2, 1);
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watch_clear_pixel(0, 0);
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}
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if ( tails ) {
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watch_set_pixel(1, 21);
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watch_set_pixel(2, 21);
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}
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break;
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case 20:
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if ( heads ) {
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watch_set_pixel(2, 1);
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watch_set_pixel(0, 0);
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}
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if ( tails ) {
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watch_clear_pixel(1, 17);
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watch_clear_pixel(0, 20);
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}
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break;
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case 21:
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if ( heads ) {
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watch_set_pixel(2, 0);
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watch_set_pixel(1, 0);
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}
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if ( tails ) {
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watch_clear_pixel(2, 20);
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watch_clear_pixel(0, 21);
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}
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break;
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case 22:
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if ( heads ) {
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watch_clear_pixel(2, 10);
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watch_clear_pixel(0, 1);
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}
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if ( tails ) {
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watch_clear_pixel(1, 21);
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watch_clear_pixel(2, 21);
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watch_set_pixel(1, 22);
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watch_set_pixel(2, 22);
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}
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break;
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case 23:
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if ( heads ) {
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watch_clear_pixel(2, 1);
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watch_clear_pixel(0, 0);
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}
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if ( tails ) {
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watch_set_pixel(0, 22);
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}
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break;
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case 24:
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if ( heads ) {
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watch_set_pixel(2, 23);
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watch_set_pixel(0, 23);
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watch_clear_pixel(2, 0);
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watch_clear_pixel(1, 0);
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}
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if ( tails ) {
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watch_set_pixel(2, 23);
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watch_set_pixel(0, 23);
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}
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break;
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case 25:
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if ( heads ) {
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watch_set_pixel(0, 22);
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}
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if ( tails ) {
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watch_clear_pixel(1, 22);
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watch_clear_pixel(2, 22);
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}
|
|
break;
|
|
case 26:
|
|
if ( heads ) {
|
|
watch_set_pixel(1, 22);
|
|
watch_set_pixel(2, 22);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(0, 22);
|
|
}
|
|
break;
|
|
case 27:
|
|
if ( heads ) {
|
|
watch_clear_pixel(2, 23);
|
|
watch_clear_pixel(0, 23);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(2, 23);
|
|
watch_clear_pixel(0, 23);
|
|
watch_set_pixel(2, 0);
|
|
watch_set_pixel(1, 0);
|
|
}
|
|
break;
|
|
case 28:
|
|
if ( heads ) {
|
|
watch_clear_pixel(0, 22);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(2, 1);
|
|
watch_set_pixel(0, 0);
|
|
}
|
|
break;
|
|
case 29:
|
|
if ( heads ) {
|
|
watch_set_pixel(1, 21);
|
|
watch_set_pixel(2, 21);
|
|
watch_clear_pixel(1, 22);
|
|
watch_clear_pixel(2, 22);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(2, 10);
|
|
watch_set_pixel(0, 1);
|
|
}
|
|
break;
|
|
case 30:
|
|
if ( heads ) {
|
|
watch_set_pixel(2, 20);
|
|
watch_set_pixel(0, 21);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(1, 0);
|
|
watch_clear_pixel(2, 0);
|
|
}
|
|
break;
|
|
case 31:
|
|
if ( heads ) {
|
|
watch_set_pixel(1, 17);
|
|
watch_set_pixel(0, 20);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(2, 1);
|
|
watch_clear_pixel(0, 0);
|
|
}
|
|
break;
|
|
case 32:
|
|
if ( heads ) {
|
|
watch_clear_pixel(1, 21);
|
|
watch_clear_pixel(2, 21);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(2, 10);
|
|
watch_clear_pixel(0, 1);
|
|
watch_set_pixel(0, 2);
|
|
watch_set_pixel(1, 2);
|
|
}
|
|
break;
|
|
case 33:
|
|
if ( heads ) {
|
|
watch_clear_pixel(2, 20);
|
|
watch_clear_pixel(0, 21);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(2, 2);
|
|
watch_set_pixel(0, 3);
|
|
}
|
|
break;
|
|
case 34:
|
|
if ( heads ) {
|
|
watch_set_pixel(0, 19);
|
|
watch_set_pixel(2, 19);
|
|
watch_clear_pixel(1, 17);
|
|
watch_clear_pixel(0, 20);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(2, 3);
|
|
watch_set_pixel(0, 4);
|
|
}
|
|
break;
|
|
case 35:
|
|
if ( heads ) {
|
|
watch_set_pixel(1, 18);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(1, 2);
|
|
watch_clear_pixel(0, 2);
|
|
}
|
|
break;
|
|
case 36:
|
|
if ( heads ) {
|
|
watch_set_pixel(0, 18);
|
|
watch_set_pixel(2, 18);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(2, 2);
|
|
watch_clear_pixel(0, 3);
|
|
}
|
|
break;
|
|
case 37:
|
|
if ( heads ) {
|
|
watch_clear_pixel(0, 19);
|
|
watch_clear_pixel(2, 19);
|
|
}
|
|
if ( tails ) {
|
|
watch_clear_pixel(2, 3);
|
|
watch_clear_pixel(0, 4);
|
|
watch_set_pixel(1, 4);
|
|
watch_set_pixel(0, 5);
|
|
}
|
|
break;
|
|
case 38:
|
|
if ( heads ) {
|
|
watch_clear_pixel(1, 18);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(2, 4);
|
|
watch_set_pixel(0, 6);
|
|
}
|
|
break;
|
|
case 39:
|
|
if ( heads ) {
|
|
watch_clear_pixel(0, 18);
|
|
watch_clear_pixel(2, 18);
|
|
}
|
|
if ( tails ) {
|
|
watch_set_pixel(1, 6);
|
|
watch_set_pixel(2, 5);
|
|
}
|
|
state->animate = false;
|
|
state->animation = 0;
|
|
movement_request_tick_frequency(1);
|
|
}
|
|
}
|
|
|
|
// DICE FUNCTIONS /////////////////////////////////////////////////////////////
|
|
|
|
/** @brief rolls a dice
|
|
*/
|
|
uint8_t roll_dice(uint8_t sides) {
|
|
uint8_t bits_needed = 0;
|
|
uint8_t temp_sides = sides - 1;
|
|
uint8_t result = 0;
|
|
while (temp_sides > 0) {
|
|
bits_needed++; // how many bits do we need to represent this number?
|
|
temp_sides >>= 1; // Shift right to check the next bit
|
|
}
|
|
do {
|
|
result = 0;
|
|
for (int i = 0; i < bits_needed; i++) {
|
|
result <<= 1; // Shift left to make room for the next bit
|
|
result |= divine_bit(); // Add the next bit to the result
|
|
}
|
|
} while ( result > sides -1 );
|
|
return result + 1; // Add 1 to convert the range from 0 to sides-1 to 1 to sides
|
|
}
|
|
|
|
/** @brief roll multiple dice and print a char array for displaying them
|
|
*/
|
|
static void _roll_dice_multiple(char* result, uint8_t* dice, uint8_t num_dice) {
|
|
// initialize the result array to all spaces
|
|
memset(result, ' ', 6);
|
|
|
|
// roll the dice and write the result to the result array
|
|
for (uint8_t i = 0; i < num_dice-1; i++) {
|
|
uint8_t dice_result = dice[i];
|
|
uint8_t tens_digit = dice_result / 10;
|
|
uint8_t ones_digit = dice_result % 10;
|
|
result[(i * 2)] = tens_digit == 0 ? ' ' : (char)('0' + tens_digit);
|
|
result[(i * 2) + 1] = (char)('0' + ones_digit);
|
|
}
|
|
}
|
|
|
|
/** @brief dice animation
|
|
*/
|
|
static void _dice_animation(toss_up_state_t *state) {
|
|
watch_display_string(" ", 4);
|
|
for (uint8_t i = 0; i < state->dice_num; i++) {
|
|
watch_display_string("0",i*2 + 5);
|
|
}
|
|
movement_request_tick_frequency(16);
|
|
switch ( state->animation ) {
|
|
case 0:
|
|
watch_clear_pixel(1, 17);
|
|
watch_clear_pixel(0, 0);
|
|
watch_clear_pixel(1, 6);
|
|
break;
|
|
case 1:
|
|
watch_clear_pixel(2, 20);
|
|
watch_clear_pixel(1, 0);
|
|
watch_clear_pixel(0, 6);
|
|
break;
|
|
case 2:
|
|
watch_clear_pixel(2, 21);
|
|
watch_clear_pixel(2, 0);
|
|
watch_clear_pixel(0, 5);
|
|
break;
|
|
case 3:
|
|
watch_clear_pixel(1, 21);
|
|
watch_clear_pixel(2, 1);
|
|
watch_clear_pixel(1, 4);
|
|
break;
|
|
case 4:
|
|
watch_clear_pixel(0, 21);
|
|
watch_clear_pixel(2, 10);
|
|
watch_clear_pixel(2, 4);
|
|
break;
|
|
case 5:
|
|
watch_clear_pixel(0, 20);
|
|
watch_clear_pixel(0, 1);
|
|
watch_clear_pixel(2, 5);
|
|
break;
|
|
case 6:
|
|
watch_clear_pixel(1, 17);
|
|
watch_clear_pixel(0, 0);
|
|
watch_clear_pixel(1, 6);
|
|
break;
|
|
case 7:
|
|
watch_clear_pixel(2, 20);
|
|
watch_clear_pixel(1, 0);
|
|
watch_clear_pixel(0, 6);
|
|
break;
|
|
case 8:
|
|
watch_clear_pixel(2, 21);
|
|
watch_clear_pixel(2, 0);
|
|
watch_clear_pixel(0, 5);
|
|
break;
|
|
case 9:
|
|
watch_clear_pixel(1, 21);
|
|
watch_clear_pixel(2, 1);
|
|
watch_clear_pixel(1, 4);
|
|
break;
|
|
case 10:
|
|
watch_clear_pixel(0, 21);
|
|
watch_clear_pixel(2, 10);
|
|
watch_clear_pixel(2, 4);
|
|
break;
|
|
case 11:
|
|
watch_clear_pixel(0, 20);
|
|
watch_clear_pixel(0, 1);
|
|
watch_clear_pixel(2, 5);
|
|
state->animate = false;
|
|
state->animation = 0;
|
|
movement_request_tick_frequency(1);
|
|
}
|
|
} |