pulling menu logic into own file, added cursor sprite

Makefile

@@ -8,4 +8,4 @@ clean:
 	rm -rf ./build ./slangin.hex
 
 run: slangin.hex
-	sim_arduboy -p 8 ./slangin.hex
+	sim_arduboy -p 6 ./slangin.hex

menu.ino

@@ -0,0 +1,95 @@
+/*
+Slangin'
+Menu Helpers
+Author: Rudis Muiznieks
+License: WTFPL
+*/
+
+const uint8_t PROGMEM spriteMenuCursor[] = {
+  3, 5,
+  0x1f, 0x0e, 0x04,
+};
+
+void computeMenuSizes(const bool small, const bool cols,
+    const int itemCount, const String items[],
+    int& x1, int& x2, int& y) {
+  const int charWidth = small ? 4 : 5;
+  const int charHeight = small ? 8 : 9;
+
+  if (cols) { // two colums
+    int col1Count = round(itemCount / 2.0);
+    int col2Count = itemCount - col1Count;
+    int col1Width = 0;
+    int col2Width = 0;
+    for (int i = 0; i < col1Count; i++) {
+      const int newLen = items[i].length();
+      if (newLen > col1Width) col1Width = newLen;
+    }
+    for (int i = 0; i < col2Count; i++) {
+      const int newLen = items[i + col1Count].length();
+      if (newLen > col2Width) col2Width = newLen;
+    }
+    x1 = 66 - round((col1Width + col2Width + 2.5) * (charWidth / 2.0));
+    x2 = x1 + round((col1Width + 2.5) * charWidth);
+    y = 40 - round(col1Count * (charHeight / 2.0));
+  } else { // one column
+    int colWidth = 0;
+    for (int i = 0; i < itemCount; i++) {
+      const int newLen = items[i].length();
+      if (newLen > colWidth) colWidth = newLen;
+    }
+    x1 = 66 - round(colWidth * (charWidth / 2.0));
+    x2 = -1;
+    y = 40 - round(itemCount * (charHeight / 2.0));
+  }
+}
+
+void drawMenu(const bool small, const bool cols,
+    const int itemCount, const String items[]) {
+  const int charWidth = small ? 4 : 5;
+  const int charHeight = small ? 8 : 9;
+  int x1, x2, y;
+  computeMenuSizes(small, cols, itemCount, items, x1, x2, y);
+  const int col1Count = round(itemCount / 2.0);
+  for (int i = 0; i < itemCount; i++) {
+    int cx, cy;
+    if (cols) { // two columns
+      const bool col1 = i < col1Count;
+      cx = col1 ? x1 : x2;
+      cy = col1
+        ? i * charHeight + y
+        : (i - col1Count) * charHeight + y;
+    } else { // one column
+      cx = x1;
+      cy = i * charHeight + y;
+    }
+    if (small) {
+      font3x5.setCursor(cx, cy);
+      font3x5.print(items[i]);
+    } else {
+      font4x6.setCursor(cx, cy);
+      font4x6.print(items[i]);
+    }
+  }
+}
+
+void drawMenuIndicator(const int menuSelected, const bool small,
+    const bool cols, const int itemCount, const String items[]) {
+  const int charWidth = small ? 4 : 5;
+  const int charHeight = small ? 8 : 9;
+  int x1, x2, y;
+  computeMenuSizes(small, cols, itemCount, items, x1, x2, y);
+  int cx, cy;
+  if (cols) { // two columns
+    const int col1Count = round(itemCount / 2.0);
+    const bool col1 = menuSelected < col1Count;
+    cx = col1 ? x1 : x2;
+    cy = col1
+      ? menuSelected * charHeight + y
+      : (menuSelected - col1Count) * charHeight + y;
+  } else { // one column
+    cx = x1;
+    cy = menuSelected * charHeight + y;
+  }
+  Sprites::drawOverwrite(cx - 4, cy + (small ? 1 : 2), spriteMenuCursor, 0);
+}

slangin.ino

@@ -5,10 +5,12 @@ License: WTFPL
 */
 
 #include <Arduboy2.h>
-#include "src/Font4x6.h";
+#include "src/fonts/Font3x5.h";
+#include "src/fonts/Font4x6.h";
 
 Arduboy2 arduboy;
 Font4x6 font4x6 = Font4x6();
+Font3x5 font3x5 = Font3x5();
 
 enum GameState {
   STATE_TITLE = 0,
@@ -86,18 +88,23 @@ void loop() {
 
   String menu[8];
   int menuLength = 0;
+  bool menuCols = false;
   bool menuSmall = false;
+  int menuSelected = 0;
 
   if (!screenInitialized) {
+    menuSelected = 0;
     arduboy.clear();
     switch (sGameState) {
       case STATE_TITLE:
-        drawTitle(F("Slangin'"));
+        arduboy.setCursor(25, 10);
+        arduboy.print(F("Slangin' v0.9"));
         menu[0] = F("New Game");
-        menu[1] = F("Continue");
-        menuLength = 2;
-        menuSmall = true;
-        draw1ColMenu(menuSmall, menuLength, menu);
+        menuLength = 1;
+        menuSmall = false;
+        menuCols = false;
+        drawMenu(menuSmall, menuCols, menuLength, menu);
+        drawMenuIndicator(menuSelected, menuSmall, menuCols, menuLength, menu);
         break;
     }
     arduboy.display();
@@ -108,62 +115,6 @@ void loop() {
 /* screen draw heplers */
 /***********************/
 void drawTitle(const String title) {
-  arduboy.setCursor(6, 8);
-  arduboy.print(title);
-}
-
-void draw1ColMenu(const bool small, const int itemCount, const String items[]) {
-  int colWidth = 0;
-  for (int i = 0; i < itemCount; i++) {
-    const int newLen = items[i].length();
-    if (newLen > colWidth) colWidth = newLen;
-  }
-  const int charWidth = small ? 5 : 6;
-  const int charHeight = small ? 9 : 10;
-  int x = 66 - round(colWidth * (charWidth / 2.0));
-  int y = 18 - round(itemCount * (charHeight / 2.0));
-  for (int i = 0; i < itemCount; i++) {
-    const int cy = i * charHeight + 22 + y;
-    if (small) {
-      font4x6.setCursor(x, cy);
-      font4x6.print(items[i]);
-    } else {
-      arduboy.setCursor(x, cy);
-      arduboy.print(items[i]);
-    }
-  }
-}
-
-void draw2ColMenu(const bool small, const int itemCount, const String items[]) {
-  const int col1Count = round(itemCount / 2.0);
-  const int col2Count = itemCount - col1Count;
-  int col1Width = 0;
-  int col2Width = 0;
-  for (int i = 0; i < col1Count; i++) {
-    const int newLen = items[i].length();
-    if (newLen > col1Width) col1Width = newLen;
-  }
-  for (int i = 0; i < col2Count; i++) {
-    const int newLen = items[i].length();
-    if (newLen > col2Width) col2Width = newLen;
-  }
-  const int charWidth = small ? 5 : 6;
-  const int charHeight = small ? 9 : 10;
-  int x = 66 - round((col1Width + col2Width + 2) * (charWidth / 2.0));
-  int y = 18 - round(col1Count * (charHeight / 2.0));
-  for (int i = 0; i < itemCount; i++) {
-    const int cx = (i < col1Count)
-      ? x
-      : x + (col1Width + 2) * charWidth;
-    const int cy = (i < col1Count)
-      ? i * charHeight + 22 + y
-      : (i - col1Count) * charHeight + 22 + y;
-    if (small) {
-      font4x6.setCursor(cx, cy);
-      font4x6.print(items[i]);
-    } else {
-      arduboy.setCursor(cx, cy);
-      arduboy.print(items[i]);
-    }
-  }
+  font4x6.setCursor(6, 8);
+  font4x6.print(title);
 }