Add newlines to draw text

src/dawn/display/draw/drawtext.c

@@ -18,11 +18,27 @@ void drawText(
 ) {
   if(len == 0) return;
   size_t rLen = mathMin(len, strlen(text));
+  if(rLen == 0) return;
   
-  assertTrue(x + rLen <= FRAME_WIDTH, "Text is too long.");
+  assertTrue(x < FRAME_WIDTH, "Text is too far right.");
   assertTrue(y < FRAME_HEIGHT, "Text is too low.");
   
-  uint16_t i = y * FRAME_WIDTH + x;
-  memcpy(&FRAME_BUFFER[i], text, rLen);
-  memset(&FRAME_COLOR[i], color, rLen);
+  char_t c;
+  uint16_t xPos = x;
+  uint16_t yPos = y * FRAME_WIDTH;
+  size_t i = 0;
+  do {
+    c = text[i++];
+    if(c == '\n') {
+      yPos += FRAME_WIDTH;
+      xPos = x;
+      continue;
+    }
+
+    assertTrue(xPos < FRAME_WIDTH, "Text overflows right.");
+    
+    FRAME_BUFFER[yPos + xPos] = c;
+    FRAME_COLOR[yPos + xPos] = color;
+    xPos++;
+  } while(i < rLen);
 }

src/dawn/display/draw/drawui.c

@@ -89,7 +89,7 @@ void drawUITextbox() {
   memset(&FRAME_COLOR[DRAW_UI_TEXTBOX_CURSOR_POS], COLOR_WHITE, 3);
   if(TEXTBOX.textIndex < TEXTBOX.textLength) return;
   
-  int32_t blink = (int32_t)(TIME.time * TEXTBOX_BLINKS_PER_SECOND) % 2;
+  int32_t blink = (int32_t)(TIME.time * DRAW_UI_TEXTBOX_BLINKS_PER_SECOND) % 2;
   FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 1] = blink ? '>' : ' ';
   FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 2] = blink ? ' ' : '>';
 }

src/dawn/display/draw/drawui.h

@@ -11,6 +11,7 @@
 #define DRAW_UI_TEXTBOX_WIDTH FRAME_WIDTH
 #define DRAW_UI_TEXTBOX_HEIGHT 8
 #define DRAW_UI_TEXTBOX_CURSOR_POS ((FRAME_HEIGHT * FRAME_WIDTH) - 4)
+#define DRAW_UI_TEXTBOX_BLINKS_PER_SECOND 2
 
 /**
  * Draws a UI box to the frame buffer.