refactoring, split up palette in preparation to add game over screen, added letter sprites

src/gfx/convimg.yaml

···
 palettes:
-  - name: global_palette
+  - name: fixed_palette
+    max-entries: 16
     fixed-entries:
       - color: {index: 0, r: 0, g: 0, b: 0}
       - color: {index: 1, r: 255, g: 255, b: 255}
       - color: {index: 2, r: 181, g: 49, b: 33}
       - color: {index: 3, r: 179, g: 243, b: 204}
     images: automatic
+  - name: grid_palette
+    images: automatic
+    fixed-entries:
+      - color: {index: 0, r: 0, g: 0, b: 0}
 
 converts:
   - name: misc
-    palette: global_palette
+    palette: fixed_palette
     style: rlet
     transparent-color-index: 4
     images:
       - background.png
-      - exa_empty.png
-      - exa_full.png
       - title.png
+  - name: text
+    palette: fixed_palette
+    style: rlet
+    transparent-color-index: 4
+    images:
+      - chars/*.png
   - name: grid_icons
-    palette: global_palette
+    palette: grid_palette
+    palette-offset: 16
     style: palette
     images:
-      - file_blue.png
-      - file_cyan.png
-      - file_locked.png
-      - file_purple.png
-      - file_red.png
-      - file_yellow.png
-      - star_blue.png
-      - star_cyan.png
-      - star_purple.png
-      - star_red.png
-      - star_yellow.png
-      - file_match_red.png
-      - file_match_yellow.png
-      - file_match_cyan.png
-      - file_match_blue.png
-      - file_match_purple.png
-      - file_erase_1.png
-      - file_erase_2.png
-      - star_match.png
-      - star_erase_1.png
-      - star_erase_2.png
+      - files/*.png
+      - stars/*.png
+  - name: exas
+    palette: grid_palette
+    palette-offset: 16
+    style: rlet
+    transparent-color-index: 0
+    images:
+      - exas/*.png
   - name: digits
-    palette: global_palette
+    palette: fixed_palette
     style: palette
     images:
-      - digit_0.png
-      - digit_1.png
-      - digit_2.png
-      - digit_3.png
-      - digit_4.png
-      - digit_5.png
-      - digit_6.png
-      - digit_7.png
-      - digit_8.png
-      - digit_9.png
-      - digit_0_grey.png
+      - digits/*.png
 
 outputs:
   - type: c
     include-file: gfx.h
     palettes:
-      - global_palette
+      - fixed_palette
+      - grid_palette
     converts:
       - misc
       - grid_icons
       - digits
+      - text
+      - exas
 

src/main.c

···
 
 void init()
 {
+	// basic graphics display settings
+	gfx_Begin();
+#ifdef NO_BUFFER
+	gfx_SetDrawScreen();
+#else
+	gfx_SetDrawBuffer();
+#endif
+
+	// set the weird combination palette
+	unsigned char global_palette[32 + sizeof_grid_palette];
+	for (unsigned char i = 0; i < sizeof_fixed_palette; i++) global_palette[i] = fixed_palette[i];
+	for (unsigned char i = 0; i < sizeof_grid_palette; i++) global_palette[i + 32] = grid_palette[i];
+	gfx_SetPalette(global_palette, 32 + sizeof_grid_palette, 0);
+
 	toExit = false;
 
 	// find the high score
···
 
 int main(void)
 {
-	gfx_Begin();
-#ifdef NO_BUFFER
-	gfx_SetDrawScreen();
-#else
-	gfx_SetDrawBuffer();
-#endif
-	gfx_SetPalette(global_palette, sizeof_global_palette, 0);
-
 	init();
 	titleScreen();