539 lines
15 KiB
C
539 lines
15 KiB
C
/*
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* PANAGOTCHI -- a Tamagotchi-style virtual pet for the CH32V003F4P6 badge.
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*
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* Hardware (see pinout.md):
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* PA1 indicator LED (active-high)
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* PC0 OK button (active-low, internal pull-up)
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* PD5 Right button (active-low, internal pull-up)
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* PD6 Left button (active-low, internal pull-up)
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* PC1/PC2 SSD1306 128x64 OLED over I2C1 (driven by ssd1306_i2c.h)
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* PD2 passive piezo buzzer (square-wave bit-bang tone)
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*
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* Controls: Left / Right move the menu cursor, OK activates the selected
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* action. On the stats / dead screens any button returns / restarts.
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*/
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#include "ch32fun.h"
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#include <stdio.h>
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#define SSD1306_128X64 // 128x64 panel (see pinout.md / OLED size)
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#include "ssd1306_i2c.h"
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#include "ssd1306.h"
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#include "sprites.h"
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// ----------------------------------------------------------------- pins
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#define LED_PIN PA1
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#define BTN_OK PC0
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#define BTN_RIGHT PD5
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#define BTN_LEFT PD6
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#define BUZZER PD2
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// ----------------------------------------------------------------- tuning
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#define FRAME_MS 60 // main loop period
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#define TICK_FRAMES 250 // stat update every ~15 s (250 * 60 ms)
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#define ANIM_FRAMES 12 // how long an action reaction is shown
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// With the values below an untended pet survives roughly half an hour:
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// a need empties in ~20 min, after which health bleeds down over ~10 more.
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// ----------------------------------------------------------------- state
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enum { SCR_MAIN, SCR_STATS, SCR_DEAD, SCR_SETTINGS };
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// notification thresholds: gentle chirp at <50%, urgent at <20%
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enum { N_FOOD, N_FUN, N_ENGY, N_WASH, N_COUNT };
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typedef struct {
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int8_t satiety; // 0..100 (fullness)
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int8_t happy; // 0..100
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int8_t energy; // 0..100
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int8_t hygiene; // 0..100
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int8_t health; // 0..100
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uint16_t age_min; // age in game-minutes (one per tick)
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uint8_t poop; // 0..3 piles on the floor
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uint8_t sleeping; // 1 while napping
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uint8_t alive;
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} Pet;
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static Pet pet;
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static uint8_t screen;
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static uint8_t cursor; // selected menu icon 0..ICON_COUNT-1
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static uint8_t anim_exp; // expression forced during a reaction
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static uint8_t anim_timer; // frames remaining for the reaction
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static uint32_t frame; // free-running frame counter
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static uint16_t tick_acc; // frames since last stat tick
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static uint8_t warn_flag[N_COUNT]; // already chirped a <50% warning
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static uint8_t crit_flag[N_COUNT]; // already chirped a <20% warning
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// settings
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static uint8_t sound_on = 1;
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static uint8_t timeout_idx = 1; // index into screen_timeout_opts (default 30 s)
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static uint8_t set_sel = 0; // highlighted row on the settings screen
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// screen-off-on-inactivity options, in frames (0 = never sleep the display)
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static const uint16_t screen_timeout_opts[] = { 250, 500, 1000, 0 };
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static const char *const screen_timeout_names[] = { "15s", "30s", "60s", "Off" };
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#define TIMEOUT_OPT_COUNT 4
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#define SETTINGS_ROWS 3 // screen-off, sound, back
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// display power state
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static uint8_t disp_on = 1;
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static uint32_t idle_frames = 0; // frames since the last button activity
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// menu icon order must match sprites.h menu_icons[] / menu_labels[]
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enum { ACT_FEED, ACT_PLAY, ACT_SLEEP, ACT_CLEAN, ACT_HEAL, ACT_STATS, ACT_SETTINGS };
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// ----------------------------------------------------------------- helpers
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static int8_t clamp100(int v) { return v < 0 ? 0 : (v > 100 ? 100 : v); }
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// short square-wave beep on the passive piezo (blocking, ms-scale only)
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static void beep(uint16_t freq, uint16_t ms)
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{
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if (!sound_on) return;
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if (freq == 0) { Delay_Ms(ms); return; }
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uint32_t half = 500000u / freq; // half-period in us
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uint32_t cycles = ((uint32_t)ms * 1000u) / (half * 2u);
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for (uint32_t i = 0; i < cycles; i++) {
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funDigitalWrite(BUZZER, FUN_HIGH);
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Delay_Us(half);
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funDigitalWrite(BUZZER, FUN_LOW);
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Delay_Us(half);
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}
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}
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static void led_blink(void)
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{
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funDigitalWrite(LED_PIN, FUN_HIGH);
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Delay_Ms(30);
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funDigitalWrite(LED_PIN, FUN_LOW);
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}
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static void pet_reset(void)
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{
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pet.satiety = 80;
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pet.happy = 80;
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pet.energy = 90;
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pet.hygiene = 100;
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pet.health = 100;
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pet.age_min = 0;
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pet.poop = 0;
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pet.sleeping = 0;
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pet.alive = 1;
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screen = SCR_MAIN;
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cursor = 0;
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for (int i = 0; i < N_COUNT; i++) { warn_flag[i] = 0; crit_flag[i] = 0; }
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}
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// Chirp once when a need first drops below 50% (gentle) or 20% (urgent),
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// re-arming only after it recovers. Audible even while the screen is off,
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// so it works as a "tend to me" reminder.
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static void notify(uint8_t idx, int8_t val)
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{
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if (val < 20) {
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if (!crit_flag[idx]) { // urgent: descending triple
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beep(1568, 60); beep(1175, 60); beep(880, 90);
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crit_flag[idx] = 1; warn_flag[idx] = 1;
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}
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} else if (val < 50) {
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if (!warn_flag[idx]) { // gentle: single chirp
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beep(1568, 50);
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warn_flag[idx] = 1;
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}
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crit_flag[idx] = 0;
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} else {
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warn_flag[idx] = 0; crit_flag[idx] = 0;
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}
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}
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static void check_notifications(void)
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{
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notify(N_FOOD, pet.satiety);
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notify(N_FUN, pet.happy);
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notify(N_ENGY, pet.energy);
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notify(N_WASH, pet.hygiene);
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}
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// pick the expression frame to draw this instant
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static uint8_t current_expression(void)
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{
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if (!pet.alive) return EXP_DEAD;
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if (anim_timer) return anim_exp;
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if (pet.sleeping) return EXP_SLEEP;
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if (pet.health < 30 || pet.happy < 25 || pet.satiety < 20)
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return EXP_SAD;
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// idle, with an occasional blink
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if ((frame % 50) < 4) return EXP_BLINK;
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return EXP_IDLE;
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}
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// ----------------------------------------------------------------- actions
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static void react(uint8_t exp) { anim_exp = exp; anim_timer = ANIM_FRAMES; }
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static void do_action(uint8_t act)
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{
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switch (act) {
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case ACT_FEED:
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pet.satiety = clamp100(pet.satiety + 30);
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pet.hygiene = clamp100(pet.hygiene - 5);
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react(EXP_EAT);
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beep(880, 60); beep(1175, 80);
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led_blink();
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break;
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case ACT_PLAY:
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if (pet.energy < 15) { beep(220, 120); break; } // too tired
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pet.happy = clamp100(pet.happy + 25);
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pet.energy = clamp100(pet.energy - 12);
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react(EXP_HAPPY);
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beep(988, 60); beep(1319, 60); beep(1568, 90);
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led_blink();
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break;
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case ACT_SLEEP:
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pet.sleeping = !pet.sleeping;
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beep(pet.sleeping ? 440 : 660, 120);
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break;
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case ACT_CLEAN:
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pet.poop = 0;
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pet.hygiene = 100;
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pet.happy = clamp100(pet.happy + 5);
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beep(1319, 50); beep(1047, 50);
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break;
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case ACT_HEAL:
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pet.health = clamp100(pet.health + 35);
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beep(784, 60); beep(1047, 60); beep(1319, 90);
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led_blink();
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break;
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case ACT_STATS:
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screen = SCR_STATS;
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beep(659, 40);
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break;
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case ACT_SETTINGS:
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screen = SCR_SETTINGS;
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set_sel = 0;
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beep(659, 40);
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break;
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}
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}
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// ----------------------------------------------------------------- game tick
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static void game_tick(void)
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{
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pet.age_min++;
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if (pet.sleeping) {
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pet.energy = clamp100(pet.energy + 6);
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// needs still drift down slowly even while asleep
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pet.satiety = clamp100(pet.satiety - 1);
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if (pet.energy >= 100) pet.sleeping = 0; // wakes when rested
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} else {
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pet.satiety = clamp100(pet.satiety - 1);
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pet.energy = clamp100(pet.energy - 1);
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pet.happy = clamp100(pet.happy - 1);
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}
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// hygiene drifts every other tick
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if (pet.age_min & 1) pet.hygiene = clamp100(pet.hygiene - 1);
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// occasional bowel movements (derived from counters, no RNG needed)
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if (!pet.sleeping && pet.poop < 3 &&
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((pet.age_min * 7u + frame) & 0x1F) == 0)
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pet.poop++;
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// being dirty / full of poop slowly saps happiness
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if (pet.poop && (pet.age_min & 1)) pet.happy = clamp100(pet.happy - 1);
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if (pet.hygiene < 20 && (pet.age_min & 1)) pet.happy = clamp100(pet.happy - 1);
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// health responds to overall wellbeing
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int8_t lo = pet.satiety;
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if (pet.happy < lo) lo = pet.happy;
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if (pet.energy < lo) lo = pet.energy;
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if (pet.hygiene < lo) lo = pet.hygiene;
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if (lo < 15) pet.health = clamp100(pet.health - 3);
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else if (lo > 50) pet.health = clamp100(pet.health + 2);
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check_notifications();
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if (pet.health <= 0) {
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pet.alive = 0;
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screen = SCR_DEAD;
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beep(330, 200); beep(247, 200); beep(165, 400);
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}
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}
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// ----------------------------------------------------------------- drawing
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static void draw_center_str(int y, const char *s)
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{
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int len = 0;
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while (s[len]) len++;
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int x = (SSD1306_W - len * 8) / 2;
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if (x < 0) x = 0;
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ssd1306_drawstr(x, y, s, 1);
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}
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static void draw_menu_bar(void)
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{
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// 7 icons across the bottom (18 px slots), selected one boxed
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for (uint8_t i = 0; i < ICON_COUNT; i++) {
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int x = i * 18 + 1;
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ssd1306_drawImage(x, 48, menu_icons[i], ICON_W, ICON_H, 0);
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if (i == cursor)
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ssd1306_drawRect(x - 1, 47, ICON_W + 1, ICON_H + 1, 1);
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}
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}
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static void draw_main(void)
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{
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ssd1306_setbuf(0);
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// top bar: action label, with a tiny low-health warning
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draw_center_str(0, menu_labels[cursor]);
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if (pet.alive && pet.health < 30 && (frame & 8))
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ssd1306_drawstr(0, 0, "!", 1);
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ssd1306_drawFastHLine(0, 10, SSD1306_W, 1);
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// pet: gentle horizontal stroll + vertical bob (still while asleep)
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int px, py;
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if (pet.sleeping) {
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px = 48; py = 16;
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ssd1306_drawstr(px + PANA_W - 2, 14, "z", 1);
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ssd1306_drawstr(px + PANA_W + 4, 12, "Z", 1);
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} else {
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uint32_t t = frame % 80;
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px = (t < 40) ? 30 + t : 30 + (80 - t); // 30..70..30
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py = 14 + ((frame % 16) < 8 ? 0 : 1);
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}
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ssd1306_drawImage(px, py, pana_frames[current_expression()],
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PANA_W, PANA_H, 0);
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// floor + poop piles
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ssd1306_drawFastHLine(0, 46, SSD1306_W, 1);
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for (uint8_t i = 0; i < pet.poop; i++)
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ssd1306_drawImage(8 + i * 12, 38, spr_poop, 8, 8, 0);
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draw_menu_bar();
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ssd1306_refresh();
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}
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static void draw_bar(int y, const char *label, int8_t val)
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{
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ssd1306_drawstr(0, y, label, 1);
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int bx = 48, bw = 76;
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ssd1306_drawRect(bx, y, bw, 7, 1);
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int fill = (val * (bw - 2)) / 100;
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if (fill > 0) ssd1306_fillRect(bx + 1, y + 1, fill, 5, 1);
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}
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static void draw_stats(void)
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{
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ssd1306_setbuf(0);
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draw_center_str(0, "-- STATUS --");
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draw_bar(10, "FOOD", pet.satiety);
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draw_bar(19, "FUN ", pet.happy);
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draw_bar(28, "ENGY", pet.energy);
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draw_bar(37, "WASH", pet.hygiene);
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draw_bar(46, "HLTH", pet.health);
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char line[17];
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snprintf(line, sizeof(line), "Age %u %s", pet.age_min,
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pet.sleeping ? "Zzz" : "");
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ssd1306_drawstr(0, 56, line, 1);
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ssd1306_refresh();
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}
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static void draw_dead(void)
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{
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ssd1306_setbuf(0);
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ssd1306_drawImage(48, 8, spr_grave, 32, 32, 0);
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draw_center_str(44, "R.I.P.");
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char line[17];
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snprintf(line, sizeof(line), "lived %u min", pet.age_min);
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draw_center_str(52, line);
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ssd1306_refresh();
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}
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static void draw_settings(void)
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{
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ssd1306_setbuf(0);
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draw_center_str(0, "- SETTINGS -");
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ssd1306_drawFastHLine(0, 10, SSD1306_W, 1);
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char rows[SETTINGS_ROWS][17];
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snprintf(rows[0], 17, "Screen off:%s", screen_timeout_names[timeout_idx]);
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snprintf(rows[1], 17, "Sound: %s", sound_on ? "On" : "Off");
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snprintf(rows[2], 17, "Back");
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for (uint8_t r = 0; r < SETTINGS_ROWS; r++) {
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int y = 18 + r * 12;
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if (r == set_sel) ssd1306_fillRect(0, y - 1, SSD1306_W, 10, 1);
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// selected row drawn inverted (color 0 on the lit bar)
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ssd1306_drawstr(4, y, rows[r], r == set_sel ? 0 : 1);
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}
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draw_center_str(56, "L/R move OK use");
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ssd1306_refresh();
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}
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// ----------------------------------------------------------------- input
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typedef struct { uint8_t ok, left, right; } Buttons;
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static Buttons read_buttons(void)
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{
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// active-low: pressed reads 0
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Buttons b;
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b.ok = !funDigitalRead(BTN_OK);
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b.left = !funDigitalRead(BTN_LEFT);
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b.right = !funDigitalRead(BTN_RIGHT);
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return b;
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}
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// ----------------------------------------------------------------- setup
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static void gpio_setup(void)
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{
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funGpioInitAll();
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funPinMode(LED_PIN, GPIO_Speed_10MHz | GPIO_CNF_OUT_PP);
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funDigitalWrite(LED_PIN, FUN_LOW);
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funPinMode(BUZZER, GPIO_Speed_10MHz | GPIO_CNF_OUT_PP);
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funDigitalWrite(BUZZER, FUN_LOW);
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// buttons: input with internal pull-up (ODR high selects pull-up)
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funPinMode(BTN_OK, GPIO_CNF_IN_PUPD);
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funPinMode(BTN_LEFT, GPIO_CNF_IN_PUPD);
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funPinMode(BTN_RIGHT, GPIO_CNF_IN_PUPD);
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funDigitalWrite(BTN_OK, FUN_HIGH);
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funDigitalWrite(BTN_LEFT, FUN_HIGH);
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funDigitalWrite(BTN_RIGHT, FUN_HIGH);
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}
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static void splash(void)
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{
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ssd1306_setbuf(0);
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draw_center_str(4, "PANAGOTCHI");
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ssd1306_drawImage(48, 16, pana_idle, PANA_W, PANA_H, 0);
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draw_center_str(52, "press any key");
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ssd1306_refresh();
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beep(659, 80); beep(784, 80); beep(988, 120);
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// wait until a button is pressed (or ~4 s timeout)
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for (int i = 0; i < 200; i++) {
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Buttons b = read_buttons();
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if (b.ok || b.left || b.right) break;
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Delay_Ms(20);
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}
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}
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// ----------------------------------------------------------------- main
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int main(void)
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{
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SystemInit();
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gpio_setup();
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Delay_Ms(120); // let the OLED rail settle
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if (ssd1306_i2c_init()) { // non-zero == failure
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// no display: fall back to a heartbeat blink so the board still shows life
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while (1) { led_blink(); Delay_Ms(700); }
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}
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ssd1306_init();
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pet_reset();
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splash();
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Buttons prev = {0, 0, 0};
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while (1) {
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Buttons b = read_buttons();
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uint8_t ok_edge = b.ok && !prev.ok;
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uint8_t left_edge = b.left && !prev.left;
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uint8_t right_edge = b.right && !prev.right;
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uint8_t any_edge = ok_edge | left_edge | right_edge;
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prev = b;
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if (any_edge) idle_frames = 0;
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if (!disp_on) {
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// screen is asleep: the first press only wakes it (not an action)
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if (any_edge) {
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ssd1306_cmd(SSD1306_DISPLAYON);
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disp_on = 1;
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}
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} else {
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switch (screen) {
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case SCR_MAIN:
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if (left_edge) {
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cursor = (cursor + ICON_COUNT - 1) % ICON_COUNT;
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beep(1047, 25);
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}
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if (right_edge) {
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cursor = (cursor + 1) % ICON_COUNT;
|
|
beep(1047, 25);
|
|
}
|
|
if (ok_edge) do_action(cursor);
|
|
draw_main();
|
|
break;
|
|
|
|
case SCR_STATS:
|
|
if (any_edge) { screen = SCR_MAIN; beep(880, 30); }
|
|
draw_stats();
|
|
break;
|
|
|
|
case SCR_SETTINGS:
|
|
if (left_edge) {
|
|
set_sel = (set_sel + SETTINGS_ROWS - 1) % SETTINGS_ROWS;
|
|
beep(1047, 25);
|
|
}
|
|
if (right_edge) {
|
|
set_sel = (set_sel + 1) % SETTINGS_ROWS;
|
|
beep(1047, 25);
|
|
}
|
|
if (ok_edge) {
|
|
if (set_sel == 0) { // cycle screen-off timeout
|
|
timeout_idx = (timeout_idx + 1) % TIMEOUT_OPT_COUNT;
|
|
beep(880, 40);
|
|
} else if (set_sel == 1) { // toggle sound
|
|
sound_on = !sound_on;
|
|
beep(988, 60); // only audible if just enabled
|
|
} else { // Back
|
|
screen = SCR_MAIN;
|
|
beep(880, 30);
|
|
}
|
|
}
|
|
draw_settings();
|
|
break;
|
|
|
|
case SCR_DEAD:
|
|
if (ok_edge) { // start a new pet
|
|
pet_reset();
|
|
beep(659, 80); beep(988, 120);
|
|
}
|
|
draw_dead();
|
|
break;
|
|
}
|
|
|
|
// sleep the display after the configured idle period
|
|
uint16_t timeout = screen_timeout_opts[timeout_idx];
|
|
if (timeout && idle_frames >= timeout) {
|
|
ssd1306_cmd(SSD1306_DISPLAYOFF);
|
|
disp_on = 0;
|
|
}
|
|
}
|
|
|
|
if (anim_timer) anim_timer--;
|
|
|
|
// advance game time independent of screen / display state
|
|
if (pet.alive && ++tick_acc >= TICK_FRAMES) {
|
|
tick_acc = 0;
|
|
game_tick();
|
|
}
|
|
|
|
frame++;
|
|
idle_frames++;
|
|
Delay_Ms(FRAME_MS);
|
|
}
|
|
}
|