From 0ffd63fed9dcfb60be7378b6f53f0f1d011fd26c Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 24 May 2025 17:01:01 -0700
Subject: Tweaks

---
 font/font.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'font/font.h')

diff --git a/font/font.h b/font/font.h
index 13ff1c3..9d37e64 100644
--- a/font/font.h
+++ b/font/font.h
@@ -5,7 +5,7 @@
 
 static const unsigned char FontGlyphStart     = 32;  // Space.
 static const unsigned char FontGlyphEnd       = 127; // One past tilde.
-static const int           FontAtlasNumGlyphs = FontGlyphEnd - FontGlyphStart;
+static const unsigned int  FontAtlasNumGlyphs = FontGlyphEnd - FontGlyphStart;
 
 /// Font atlas header.
 typedef struct FontHeader {
@@ -32,8 +32,10 @@ FontAtlas* LoadFontAtlas(const char* path);
 static inline const unsigned char* FontGetGlyph(
     const FontAtlas* atlas, unsigned char c) {
   assert(atlas);
-  const int index = c - FontGlyphStart;
-  assert(index >= 0);
+  unsigned index = c - FontGlyphStart;
+  if (index >= FontAtlasNumGlyphs) {
+    index = '?' - FontGlyphStart;
+  }
   assert(index < FontAtlasNumGlyphs);
   return atlas->pixels +
          index * (atlas->header.glyph_width * atlas->header.glyph_height);
-- 
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