Better and more SimpleEffects.

* Calculations are done using doubles for much easier code.
* Binary flags instead of boolean variables for configuration.
* New effects sineline, barbershop and zigzag.

include/SimpleEffect.h

@@ -1,21 +1,30 @@
 #pragma once
 #include "Effect.h"
 #include "prototypes.h"
+#include <cmath>
+
+#define SE_CYCLE_COLORS 1           // Slowly cycle through the rainbow.
+#define SE_RANDOM_PIXEL_COLORS 2    // Every pixel gets a random color every frame.
+#define SE_ONLY_POSITIVE 4          // Only use colors, not white. This is equivalent to running your output through abs()
+#define SE_FADEOUT 8                // Fades the old image out. Returning 0 doesn't change the pixel's value.
+#define SE_RANDOM_STATIC_COLOR 16   // Sets a random static color at start of the effect.
+#define SE_DEBUG 32                 // Prints debug messages.
 
 class SimpleEffect : public Effect {
 protected:
     Window* window = &Window::window_full; // Use a full screen window per default.
-    boolean _fade_out = false;
-    boolean _random_colors = false;
-    boolean _cycle_color = true;
     uint8_t _color = 0;
+    uint16_t _flags;
     String _name;
     simple_effect_t _method;
 public:
-    SimpleEffect(String name, simple_effect_t method): _name { name }, _method { method } {};
-    SimpleEffect* with_fadeout() { _fade_out=true; return this;}
-    SimpleEffect* with_random_colors() { _random_colors=true; return this;}
-    SimpleEffect* with_static_color(uint8_t color) { _cycle_color=false; _color=color; return this; }
+    SimpleEffect(String name, uint16_t flags, simple_effect_t method): _name { name }, _method { method } {
+        _flags = flags;
+        if (_flags & SE_RANDOM_STATIC_COLOR) {
+            _color = random8();
+            _flags &= ~SE_CYCLE_COLORS & ~SE_RANDOM_PIXEL_COLORS;
+        }
+    };
     void loop(uint16_t ms) override;
     String get_name() { return _name; };
     boolean can_be_shown_with_clock() { return true; }

include/effects.h

@@ -4,7 +4,7 @@
 #include "effects/clock.h"
 #include "effects/timer.h"
 
-#define SIMPLE_EFFECT [](accum88 t, uint16_t i, uint8_t x, uint8_t y)->int8_t
+#define SIMPLE_EFFECT(name, use_in_cycle, flags, ...) {name, use_in_cycle, [](){ return new SimpleEffect(name, flags, [](double t, uint16_t i, uint8_t x, uint8_t y)->double __VA_ARGS__ ); }}
 
 struct EffectEntry {
 	const char* name;

include/prototypes.h

@@ -33,4 +33,4 @@ typedef struct {
     uint16_t y;
 } Coords;
 
-typedef std::function<int8_t(accum88, uint16_t, uint8_t, uint8_t)> simple_effect_t;
+typedef std::function<double(double, uint16_t, uint8_t, uint8_t)> simple_effect_t;