Initial implementation of HeisserDraht buzz wire game

ESP32-C3 based hot wire game with WS2812B LED effects, SSD1306 OLED display, debounced touch detection, and full game state machine (IDLE → COUNTDOWN → PLAYING → GAME_OVER). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-22 00:24:52 +01:00
commit 01e79a4eb2
9 changed files with 619 additions and 0 deletions
--- a/led_effects.cpp
+++ b/led_effects.cpp
@@ -0,0 +1,132 @@
+#include "led_effects.h"
+#include "config.h"
+#include "game_logic.h"
+#include <Adafruit_NeoPixel.h>
+
+static Adafruit_NeoPixel strip(NUM_LEDS, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
+
+// ── Helpers ─────────────────────────────────────────────────────────
+
+static uint32_t colorWheel(uint8_t pos) {
+  pos = 255 - pos;
+  if (pos < 85)  return strip.Color(255 - pos * 3, 0, pos * 3);
+  if (pos < 170) { pos -= 85; return strip.Color(0, pos * 3, 255 - pos * 3); }
+  pos -= 170;
+  return strip.Color(pos * 3, 255 - pos * 3, 0);
+}
+
+// ── Animations ──────────────────────────────────────────────────────
+
+static void animIdle() {
+  // Rainbow chase
+  static uint16_t hue = 0;
+  for (int i = 0; i < NUM_LEDS; i++) {
+    strip.setPixelColor(i, colorWheel((i * 256 / NUM_LEDS + hue) & 0xFF));
+  }
+  hue += 2;
+  strip.show();
+}
+
+static void animCountdown() {
+  GameData& gd = gameGetData();
+  uint32_t color;
+  switch (gd.countdownValue) {
+    case 3:  // fall through
+    case 2:  color = strip.Color(255, 0, 0); break;   // Red
+    case 1:  color = strip.Color(255, 180, 0); break;  // Yellow
+    default: color = strip.Color(0, 255, 0); break;    // Green (GO!)
+  }
+  for (int i = 0; i < NUM_LEDS; i++) {
+    strip.setPixelColor(i, color);
+  }
+  strip.show();
+}
+
+static void animPlaying() {
+  GameData& gd = gameGetData();
+  unsigned long totalMs = (unsigned long)GAME_DURATION_S * 1000UL;
+  float progress = 1.0f - (float)gd.elapsedMs / (float)totalMs;
+  if (progress < 0.0f) progress = 0.0f;
+
+  int litLeds = (int)(progress * NUM_LEDS + 0.5f);
+
+  for (int i = 0; i < NUM_LEDS; i++) {
+    if (i < litLeds) {
+      // Color transitions: green → yellow → red as time depletes
+      if (progress > 0.5f)      strip.setPixelColor(i, strip.Color(0, 255, 0));
+      else if (progress > 0.2f) strip.setPixelColor(i, strip.Color(255, 180, 0));
+      else                      strip.setPixelColor(i, strip.Color(255, 0, 0));
+    } else {
+      strip.setPixelColor(i, 0);
+    }
+  }
+  strip.show();
+}
+
+static void animGameOverWin() {
+  // Green/gold sparkle
+  static unsigned long lastSparkle = 0;
+  unsigned long now = millis();
+  if (now - lastSparkle > 80) {
+    lastSparkle = now;
+    for (int i = 0; i < NUM_LEDS; i++) {
+      if (random(3) == 0)
+        strip.setPixelColor(i, strip.Color(255, 215, 0));  // Gold
+      else
+        strip.setPixelColor(i, strip.Color(0, 180, 0));    // Green
+    }
+    strip.show();
+  }
+}
+
+static void animGameOverLose() {
+  // Pulsing red breathing
+  static uint8_t breathVal = 0;
+  static int8_t  breathDir = 2;
+  breathVal += breathDir;
+  if (breathVal >= 250 || breathVal <= 5) breathDir = -breathDir;
+
+  for (int i = 0; i < NUM_LEDS; i++) {
+    strip.setPixelColor(i, strip.Color(breathVal, 0, 0));
+  }
+  strip.show();
+}
+
+// ── Public API ──────────────────────────────────────────────────────
+
+void ledsInit() {
+  strip.begin();
+  strip.setBrightness(LED_BRIGHTNESS);
+  strip.show();
+}
+
+void ledsSetBrightness(uint8_t b) {
+  strip.setBrightness(b);
+}
+
+void ledsTouchFlash() {
+  // Blocking 3x red blink (~300ms total)
+  for (int flash = 0; flash < 3; flash++) {
+    for (int i = 0; i < NUM_LEDS; i++)
+      strip.setPixelColor(i, strip.Color(255, 0, 0));
+    strip.show();
+    delay(50);
+    for (int i = 0; i < NUM_LEDS; i++)
+      strip.setPixelColor(i, 0);
+    strip.show();
+    delay(50);
+  }
+}
+
+void ledsUpdate() {
+  GameData& gd = gameGetData();
+  switch (gd.state) {
+    case STATE_IDLE:      animIdle(); break;
+    case STATE_COUNTDOWN: animCountdown(); break;
+    case STATE_PLAYING:   animPlaying(); break;
+    case STATE_GAME_OVER:
+      if (gd.won) animGameOverWin();
+      else        animGameOverLose();
+      break;
+  }
+}