Added effect 'gol': Conway's Game of Life.

include/Window.h

@@ -7,11 +7,12 @@ class Window {
 public:
 	const uint8_t x, y;
 	const uint8_t width, height;
+	uint16_t count;
 	static Window* getFullWindow();
 	
 	Window(): Window(0, 0, LED_WIDTH, LED_HEIGHT) {};
 	Window(uint8_t x, uint8_t y) : Window(x, y, LED_WIDTH-x, LED_HEIGHT-y) {};
-	Window(uint8_t x, uint8_t y, uint8_t width, uint8_t height) : x(x), y(y), width(width), height(height) {};
+	Window(uint8_t x, uint8_t y, uint8_t width, uint8_t height) : x(x), y(y), width(width), height(height) { count = width*height; };
 
 	void clear();
 	void clear(CRGB* color);

include/config.sample.h

@@ -69,6 +69,8 @@
 #define EFFECT_FIREWORK_BLUR 200
 #define EFFECT_FIREWORK_FADEOUT_SPEED 5
 
+#define EFFECT_GOL_START_PERCENTAGE 128
+#define EFFECT_GOL_BLEND_SPEED 5
  
 // Stop editing here
 

include/effect_gol.h

@@ -0,0 +1,23 @@
+#pragma once
+#include "Effect.h"
+
+class GolEffect : public Effect {
+private:
+	uint8_t *_data;
+	uint8_t *_old;
+	uint8_t _blend;
+	uint8_t _hue = 0;
+	uint8_t _old_hue = 0;
+	uint16_t _step;
+	
+	void _advance();
+	void _draw();
+	void _initialize();
+
+public:
+	GolEffect();
+	void start();
+	void stop();
+	void loop();
+	bool can_be_shown_with_clock();
+};

src/effect_gol.cpp

@@ -0,0 +1,98 @@
+#include "effect_gol.h"
+#include "my_fastled.h"
+
+GolEffect::GolEffect() {
+	this->window = new Window(0, 0, LED_WIDTH, LED_HEIGHT-6);
+}
+
+bool GolEffect::can_be_shown_with_clock() { return true; }
+
+void GolEffect::start() {
+	_data = new uint8_t[this->window->count];
+	_old = new uint8_t[this->window->count];
+	for(uint16_t i=0; i<this->window->count; i++) {
+		_old[i] = 0;
+	}
+	_initialize();
+}
+
+void GolEffect::_initialize() {
+	for(uint16_t i=0; i<this->window->count; i++) {
+		_data[i] = random8() < EFFECT_GOL_START_PERCENTAGE ? 1 : 0;
+	}
+	_old_hue = _hue;
+	_hue = random8();
+	_step = 0;
+}
+
+void GolEffect::stop() {
+	delete[] _data;
+	delete[] _old;
+}
+
+void GolEffect::loop() {
+	if (EFFECT_GOL_BLEND_SPEED + _blend > 255) {
+		_blend = 0;
+		_advance();
+	} else {
+		_blend += EFFECT_GOL_BLEND_SPEED;
+	}
+	
+	_draw();
+}
+
+void GolEffect::_advance() {
+	_step++;
+	_old_hue = _hue;
+	if (_step >= EFFECT_GOL_RESTART_AFTER_STEPS) {
+		_initialize();
+	} else {
+		for(uint16_t i=0; i<this->window->count; i++) {
+			_old[i] = _data[i];
+		}
+		uint8_t w = this->window->width;
+		uint16_t changes = 0;
+		for(uint8_t x=0; x<this->window->width; x++) for(uint8_t y=0; y<this->window->height; y++) {
+			uint16_t index = y*w + x;
+			uint8_t count = 
+				(x>0 && y>0 && _old[index - w - 1]) +
+				(y>0 && _old[index - w]) +
+				(x<this->window->width-1 && y>0 && _old[index - w + 1]) +
+				
+				(x>0 && _old[index - 1]) +
+				(x<this->window->width-1 && _old[index + 1]) +
+				
+				(x>0 && y<this->window->height-1 && _old[index + w - 1]) +
+				(y<this->window->height-1 && _old[index + w]) +
+				(x<this->window->width-1 && y<this->window->height-1 && _old[index + w + 1]);
+			if (_old[index]==0 && count==3) {
+				// birth
+				_data[index]=1;
+				changes++;
+			}
+			if (_old[index]>0) {
+				if (count<2 || count>3) {
+					//death
+					_data[index]=0;
+					changes++;
+				} else if (_data[index] < 255) {
+					//ageing
+					_data[index]++;
+				}
+			}
+		}
+		
+		if (changes == 0) {
+			_initialize();
+		}
+	}
+}
+
+void GolEffect::_draw() {
+	for(uint16_t i=0; i<this->window->count; i++) {
+		CRGB o = _old[i]==0 ? CRGB::Black : (CRGB)CHSV(_old_hue, 180, 255);
+		CRGB n = _data[i]==0 ? CRGB::Black : (CRGB)CHSV(_hue, 180, 255);
+		CRGB result = nblend(o, n, _blend);
+		this->window->setPixelByIndex(i, &result);
+	}
+}

src/effects.cpp

@@ -16,6 +16,7 @@
 #include "effect_snake.h"
 #include "effect_fire.h"
 #include "effect_firework.h"
+#include "effect_gol.h"
 
 SimpleList<EffectEntry>* effects;
 SimpleList<Effect*>* cycle_effects;
@@ -38,6 +39,7 @@ ConfettiEffect effect_confetti;
 SnakeEffect effect_snake;
 FireEffect effect_fire;
 FireworkEffect effect_firework;
+GolEffect effect_gol;
 
 Effect* current_effect;
 
@@ -62,6 +64,7 @@ void setup_effects() {
 	effects->add((EffectEntry){"snake", (Effect *)&effect_snake});
 	effects->add((EffectEntry){"fire", (Effect *)&effect_fire});
 	effects->add((EffectEntry){"firework", (Effect *)&effect_firework});
+	effects->add((EffectEntry){"gol", (Effect *)&effect_gol});
 
 	cycle_effects->add(&effect_sinematrix3);
 	cycle_effects->add(&effect_multi_dynamic);
@@ -69,6 +72,7 @@ void setup_effects() {
 	cycle_effects->add(&effect_confetti);
 	cycle_effects->add(&effect_single_dynamic);
 	cycle_effects->add(&effect_snake);
+	cycle_effects->add(&effect_gol);
 
 	current_effect = &effect_cycle;
 }