Add somewhat glitchy but valid word wrapping. See issue #3

pwn_zero/include/pwnagotchi.h

@@ -115,7 +115,7 @@ enum PwnagotchiMode {
 typedef struct {
     /// Current face
     enum PwnagotchiFace face;
-    char* faceStr;
+    // char* faceStr;
     /// CH channel display at top left
     char channel[PWNAGOTCHI_MAX_CHANNEL_LEN];
     /// AP text shown at the top

pwn_zero/src/pwnagotchi.c

@@ -4,14 +4,14 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <math.h>
 
 #include <furi.h>
 
 Pwnagotchi* pwnagotchi_alloc() {
     Pwnagotchi* pwn = malloc(sizeof(Pwnagotchi));
 
-    pwn->face = Grateful;
-    pwn->faceStr = GRATEFUL;
+    pwn->face = Cool;
     pwn->friendFace = NoFace;
 
     strncpy(pwn->channel, "*", 2);
@@ -246,7 +246,49 @@ void pwnagotchi_draw_mode(Pwnagotchi* pwn, Canvas* canvas) {
 
 void pwnagotchi_draw_message(Pwnagotchi* pwn, Canvas* canvas) {
     canvas_set_font(canvas, FontSecondary);
-    canvas_draw_str(canvas, PWNAGOTCHI_MESSAGE_J, PWNAGOTCHI_MESSAGE_I, pwn->message);
+    int fontHeight = canvas_current_font_height(canvas);
+
+    // Apparently W is the widest character (USING a for a more average approach)
+    size_t charLength = canvas_string_width(canvas, "a");
+
+    size_t horizSpace = FLIPPER_SCREEN_WIDTH - PWNAGOTCHI_MESSAGE_J;
+    size_t charSpaces = floor(((double) horizSpace) / charLength);
+    size_t messagePixLen = canvas_string_width(canvas, pwn->message);
+    size_t maxLines = floor((PWNAGOTCHI_MESSAGE_I - PWNAGOTCHI_LINE2_END_I) / ((double) fontHeight));
+
+    size_t requiredLines = ceil(((double) messagePixLen) / horizSpace);
+
+    size_t charIndex = 0;
+    for (size_t i = 0; i < requiredLines && i < maxLines - 1; i++) {
+        // Allocate the line with room for two more characters (a space and then another char)
+        size_t allocSize = charSpaces + 2;
+        char* line = malloc(sizeof(char) * allocSize);
+
+        // Copy the allotted characters into line
+        memcpy(line, (pwn->message + charIndex), allocSize);
+
+        // Now loop backwards and cut it off at a space if we end with a letter
+        size_t backspaceCount = 0;
+        if (line[allocSize - 1] != ' ' && line[allocSize - 1] != '\0') {
+            for (int j = allocSize - 1; j >= 0; j--) {
+                if (line[j] == ' ') {
+                    line[j] = '\0';
+                    break;
+                }
+                backspaceCount++;
+
+            }
+        }
+
+        // Lets make sure if backspaceCount is too large that we cut the word instead of drawing off the screen
+        if (backspaceCount >= charSpaces) {backspaceCount = 0;}
+
+        canvas_draw_str(canvas, PWNAGOTCHI_MESSAGE_J, PWNAGOTCHI_MESSAGE_I + (i * fontHeight), line);
+
+        charIndex += (charSpaces - backspaceCount + 1);
+        free(line);
+    }
+
 }
 
 void pwnagotchi_free(Pwnagotchi* pwn) {