added mqtt and cleanup

main/LEDMatrix.cpp

@@ -1,4 +1,5 @@
 #include "LEDMatrix.h"
+#include "font.h"
 
 LEDMatrix::LEDMatrix(uint8_t width, uint8_t height, uint16_t numLeds, uint16_t lastVisibleLed, CRGB* leds)
   : kMatrixWidth(width), kMatrixHeight(height), NUM_LEDS(numLeds), LAST_VISIBLE_LED(lastVisibleLed), leds(leds) {
@@ -40,4 +41,29 @@ void LEDMatrix::drawPixel(uint8_t x, uint8_t y, CRGB color) {
   if (index <= LAST_VISIBLE_LED) {
     leds[index] = color;
   }
+}
+
+void LEDMatrix::drawChar(char c, int x, int y, CRGB color) {
+  if (c < 32 || c > 127) return; // Ignore non-printable characters
+
+  for (int i = 0; i < 5; i++) {
+    uint8_t line = font[(c - 32) * 5 + i]; // Access the font array as a one-dimensional array
+    for (int j = 0; j < 7; j++) {
+      if (line & 0x1) {
+        drawPixel(x + i, y + j, color);
+      }
+      line >>= 1;
+    }
+  }
+}
+
+void LEDMatrix::drawText(const char* text, int x, int y, CRGB color) {
+  while (*text) {
+    drawChar(*text++, x, y, color);
+    x += 6; // Move to the next character position
+    if (x >= kMatrixWidth) { // Handle overflow to the next screen
+      x = 0;
+      y += 8; // Move to the next line
+    }
+  }
 }