Adding loop function

arduino/cosplay_lights/cosplay_lights.ino

@@ -5,7 +5,7 @@
  * A single button navigates between shows:
  *   1 tap  — next show
  *   2 taps — previous show
- *   hold   — reset to show 0 (slow blue pulse)
+ *   hold   — reset to show 0 (blue breath)
  *
  * To add or update shows:
  *   1. Add or edit a .txt file in converter/shows/
@@ -66,10 +66,19 @@ static float step_progress(const Step& step) {
     return (t < 1.0f) ? t : 1.0f;
 }
 
-// Complete the current step and advance to the next (loops at end of show).
+// Complete the current step and advance to the next.
+// SHOW_LOOP wraps back to step 0; SHOW_SINGLE loads the next show when the last step ends.
 static void advance_step(CRGB reached_color) {
     s_from_color = reached_color;
-    s_step_index = (s_step_index + 1) % s_show.length;
+    uint16_t next = s_step_index + 1;
+    if (next >= s_show.length) {
+        if (s_show.mode == SHOW_SINGLE) {
+            load_show((s_show_index + 1) % SHOW_COUNT);
+            return;
+        }
+        next = 0;
+    }
+    s_step_index = next;
     s_step_start = millis();
 }
 
@@ -78,7 +87,7 @@ static void advance_step(CRGB reached_color) {
 void setup() {
     leds_begin();
     button_begin(BUTTON_PIN);
-    load_show(0);   // start on show 0 — slow blue pulse
+    load_show(0);   // start on show 0 — blue breath
 }
 
 void loop() {
@@ -93,7 +102,7 @@ void loop() {
         load_show((s_show_index + SHOW_COUNT - 1) % SHOW_COUNT);
     }
     if (evt == BTN_HOLD) {
-        // Reset to show 0 (blue pulse) from any position.
+        // Reset to show 0 (blue breath) from any position.
         load_show(0);
     }
 

arduino/cosplay_lights/lightshow_format.h

@@ -12,16 +12,21 @@
 #include <avr/pgmspace.h>
 #include <stdint.h>
 
+// Show playback modes.
+#define SHOW_LOOP   0  // repeat the show indefinitely
+#define SHOW_SINGLE 1  // play once, then auto-advance to the next show
+
 // One step in a lightshow: a target color and the time to reach it.
 struct Step {
     uint8_t  r, g, b;        // Target RGB color (0–255 each)
     uint16_t duration_ms;    // Milliseconds to fade from the previous color (0 = instant)
 };
 
-// Descriptor for one complete show: a pointer to its PROGMEM Step array and its length.
+// Descriptor for one complete show.
 struct ShowDef {
     const Step* steps;    // Pointer to a PROGMEM Step array
     uint16_t    length;   // Number of steps in the array
+    uint8_t     mode;     // SHOW_LOOP or SHOW_SINGLE
 };
 
 // Read one Step from PROGMEM into a regular struct.
@@ -41,5 +46,6 @@ inline ShowDef read_show_def(const ShowDef* ptr) {
     ShowDef sd;
     sd.steps  = (const Step*)pgm_read_word(&ptr->steps);
     sd.length = pgm_read_word(&ptr->length);
+    sd.mode   = pgm_read_byte(&ptr->mode);
     return sd;
 }

arduino/cosplay_lights/show_blue_breath.h

@@ -0,0 +1,15 @@
+// Generated by convert_all.py from: blue_breath.txt
+// Do not edit manually — edit the .txt file and run: make shows
+// SPDX-License-Identifier: BSD-2-Clause
+
+#pragma once
+#include "lightshow_format.h"
+
+const Step SHOW_BLUE_BREATH[] PROGMEM = {
+    {  5,   0,  24,     0},  // #050018, 0ms
+    { 32,  32, 255,  2500},  // #2020FF, 2500ms
+    { 32,  32, 255,   400},  // #2020FF, 400ms
+    {  5,   0,  24,  2500},  // #050018, 2500ms
+    {  5,   0,  24,   800},  // #050018, 800ms
+};
+const uint16_t SHOW_BLUE_BREATH_LENGTH = 5;

arduino/cosplay_lights/show_blue_pulse.h

@@ -1,13 +0,0 @@
-// Generated by convert_all.py from: blue_pulse.txt
-// Do not edit manually — edit the .txt file and run: make shows
-// SPDX-License-Identifier: BSD-2-Clause
-
-#pragma once
-#include "lightshow_format.h"
-
-const Step SHOW_BLUE_PULSE[] PROGMEM = {
-    {  5,   0,  37,     0},  // #050025, 0ms
-    { 40,  40, 255,  3000},  // #2828FF, 3000ms
-    {  5,   0,  37,  3000},  // #050025, 3000ms
-};
-const uint16_t SHOW_BLUE_PULSE_LENGTH = 3;

arduino/cosplay_lights/shows.h

@@ -4,7 +4,7 @@
 // Do not edit manually — add .txt files to converter/shows/ instead.
 // =====================================================================
 //
-// Show 0 is always the home/reset show (slow blue pulse).
+// Show 0 is always the home/reset show (blue breath).
 // Holding the button resets back to show 0.
 //
 // SPDX-License-Identifier: BSD-2-Clause
@@ -13,17 +13,17 @@
 #include "lightshow_format.h"
 
 // ---- Individual show data ----------------------------------------------
-#include "show_blue_pulse.h"
+#include "show_blue_breath.h"
 #include "show_example_fade.h"
 #include "show_example_party.h"
 #include "show_example_pulse.h"
 
 // ---- Show index (PROGMEM) ----------------------------------------------
 const ShowDef SHOWS[] PROGMEM = {
-    {SHOW_BLUE_PULSE, SHOW_BLUE_PULSE_LENGTH},  // 0 — home show
-    {SHOW_EXAMPLE_FADE, SHOW_EXAMPLE_FADE_LENGTH},  // 1
-    {SHOW_EXAMPLE_PARTY, SHOW_EXAMPLE_PARTY_LENGTH},  // 2
-    {SHOW_EXAMPLE_PULSE, SHOW_EXAMPLE_PULSE_LENGTH},  // 3
+    {SHOW_BLUE_BREATH, SHOW_BLUE_BREATH_LENGTH, SHOW_LOOP},  // 0 — home show
+    {SHOW_EXAMPLE_FADE, SHOW_EXAMPLE_FADE_LENGTH, SHOW_LOOP},  // 1
+    {SHOW_EXAMPLE_PARTY, SHOW_EXAMPLE_PARTY_LENGTH, SHOW_LOOP},  // 2
+    {SHOW_EXAMPLE_PULSE, SHOW_EXAMPLE_PULSE_LENGTH, SHOW_LOOP},  // 3
 };
 
 const uint8_t SHOW_COUNT = 4;