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

src/effect_big_clock.cpp

@@ -0,0 +1,43 @@
+#include "Effect.h"
+#include "effect_big_clock.h"
+#include "text.h"
+#include "functions.h"
+#include "ntp.h"
+
+void BigClockEffect::drawNumber(uint8_t number, int x, int y, CRGB color) {
+  char buffer[7];
+  sprintf(buffer, "%02d", number);
+  drawText(buffer, x, y, color);
+}
+
+void BigClockEffect::drawText(char *text, int x, int y, CRGB color) {
+  for (int i = 0; i < strlen(text); i++) {
+    drawSprite(font_char(numbers4x7, text[i]), x + i * 4, y, color);
+  }
+}
+
+unsigned char* BigClockEffect::font_char(unsigned char* font, char c) {
+  return &font[(c - 48) * 4];
+}
+
+void BigClockEffect::drawSprite(unsigned char* sprite, int xOffset, int yOffset, CRGB color) {
+  for ( byte y = 0; y < 7; y++) {
+    for ( byte x = 0; x < 4; x++) {
+      bool on = (sprite[x] >> y & 1) * 255;
+      if (on) {
+        leds[ XYsafe(x + xOffset, y + yOffset) ] = color;
+      }
+    }
+  }
+}
+
+void BigClockEffect::loop() {
+  clear();
+  drawNumber(ntpClient.getHours(), 0, 0, color_h);
+  drawNumber(ntpClient.getMinutes(), 8, 0, color_m);
+  /*if (ntpClient.getSeconds() & 1) {
+    leds[XYsafe(13, 2)] = color_colon;
+    leds[XYsafe(13, 5)] = color_colon;
+    }*/
+  drawNumber(ntpClient.getSeconds(), 8, 8, color_colon);
+}