Splitting the code into single files is done. \o/

src/effect_cycle.cpp

@@ -0,0 +1,30 @@
+#include "effect_cycle.h"
+
+void CycleEffect::changeEffect() {
+  Effect* new_effect;
+  do {
+    int new_id = random8(cycle_effects->size());
+    new_effect = cycle_effects->get(new_id);
+  } while (&new_effect == &effect);
+  effect = new_effect;
+  effectSince = millis();
+}
+
+boolean CycleEffect::can_be_shown_with_clock() {
+  return effect->can_be_shown_with_clock();
+};
+boolean CycleEffect::clock_as_mask() {
+  return effect->clock_as_mask();
+};
+
+void CycleEffect::loop() {
+  if (!effect) changeEffect(); // If this is the first run, we have to select an effect first!
+  effect->loop();
+  // Don't use EVERY_N_SECONDS(config_effect_cycle_time) here because that function isn't relly made
+  // to be used with changing values.
+  EVERY_N_SECONDS(1) {
+    if (effectSince + EFFECT_CYCLE_TIME*1000 < millis()) {
+      changeEffect();
+    }
+  }
+}