Make it less visually busy, for living on our wall

picker.cpp

@@ -0,0 +1,16 @@
+#include <Arduino.h>
+#include <stdint.h>
+#include "picker.h"
+
+Picker::Picker() {
+    val = random(1, 256);
+}
+
+bool Picker::Pick(uint8_t likelihood) {
+    if ((val > 0) && (val <= likelihood)) {
+        val = 0;
+        return true;
+    }
+    val -= likelihood;
+    return false;
+}

picker.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdint.h>
+
+class Picker {
+public:
+    Picker();
+    bool Pick(uint8_t);
+private:
+    uint8_t val;
+};

wallart.ino

@@ -1,4 +1,5 @@
 #include <FastLED.h>
+#include "picker.h"
 
 #define NEOPIXEL_PIN 2
 #define GRIDLEN 50
@@ -8,8 +9,8 @@
 
 CRGB grid[GRIDLEN];
 
-void fade() {
-  int reps = 300 + random(GRIDLEN);
+void fade(int cycles = 2) {
+  int reps = (cycles*GRIDLEN) + random(GRIDLEN);
   int hue = random(256);
   for (int i = 0; i < reps; i++) {
     for (int pos = 0; pos < 8; pos++) {
@@ -20,7 +21,7 @@ void fade() {
   }
 }
 
-void singleCursor() {
+void singleCursor(int count = 80) {
   for (int i = 0; i < 80; i++) {
     grid[20] = CHSV(0, 210, 127 * (i%2));
     FastLED.show();
@@ -29,10 +30,10 @@ void singleCursor() {
 }
 
 #define NUM_SPARKS 3
-void sparkle() {
+void sparkle(int cycles=50) {
   int pos[NUM_SPARKS] = {0};
-  for (int i = 0; i < 50; i++) {
-    for (int j = 0; j < NUM_SPARKS; j++) {
+  for (int i = 0; i < cycles; i++) {
+    for (int j = 0; j < GRIDLEN/16; j++) {
       pos[j] = random(GRIDLEN);
       grid[pos[j]] = CRGB::Gray;
     }
@@ -46,7 +47,7 @@ void sparkle() {
 
 #define NUM_GLITCH 4
 #define GLITCH_FRAMES 64
-void glitchPulse() {
+void glitchPulse(int cycles=1000) {
   int steps[NUM_GLITCH] = {0};
   int pos[NUM_GLITCH] = {0};
   CRGB color[NUM_GLITCH];
@@ -56,7 +57,7 @@ void glitchPulse() {
     color[i] = CRGB::Brown;
   }
   
-  for (int frame = 0; frame < 1000; frame++) {
+  for (int frame = 0; frame < cycles; frame++) {
     for (int i = 0; i < NUM_GLITCH; i++) {
       if (steps[i] == 0) {
         steps[i] = GLITCH_FRAMES;
@@ -77,7 +78,34 @@ void glitchPulse() {
     FastLED.show();
     delay(100);
   }
+}
 
+void conwayish(int cycles=1000) {
+  uint8_t total[GRIDLEN];
+  uint8_t left[GRIDLEN] = {0};
+  uint8_t hue = random(0, 64);
+
+  for (int i = 0; i < GRIDLEN; i++) {
+    total[i] = random(64, 256);
+    left[i] = total[i];
+  }
+
+  for (int frame = 0; frame < cycles; frame++) {
+    for (int i = 0; i < GRIDLEN; i++) {
+      if (left[i] == 0) {
+        left[i] = total[i];
+        if (grid[i].getLuma() == 0) {
+          grid[i].setHSV(hue, 180, 192);
+        } else {
+          grid[i] = CRGB::Black;
+        }
+      } else {
+        left[i]--;
+      }
+    }
+    FastLED.show();
+    delay(20);
+  }
 }
 
 void setup() {
@@ -87,8 +115,18 @@ void setup() {
 }
 
 void loop() {
-  fade();
-  singleCursor();
-  sparkle();
-  glitchPulse();
+  Picker p;
+
+  if (p.Pick(1)) {
+    fade();
+    singleCursor(20);
+  } else if (p.Pick(1)) {
+    sparkle();
+  } else if (p.Pick(4)) {
+    singleCursor();
+  } else if (p.Pick(8)) {
+    conwayish();
+  } else if (p.Pick(8)) {
+    glitchPulse();
+  }
 }