From f4063101b304d67c9ce9979c4a1dfe64a1a1e640 Mon Sep 17 00:00:00 2001
From: David McMackins II <contact@mcmackins.org>
Date: Mon, 30 May 2016 09:09:41 -0500
Subject: Add constant for number of bytes per tile

---
 stdgb.c | 2 +-
 stdgb.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/stdgb.c b/stdgb.c
index 2de1275..e2347bb 100644
--- a/stdgb.c
+++ b/stdgb.c
@@ -93,7 +93,7 @@ void
 gb_define_tile (uint8_t start, const uint8_t *data)
 {
   uint8_t *tiles = GB_TILE_DATA;
-  gb_memcpy (&tiles[start * 16], data, 16);
+  gb_memcpy (&tiles[start * GB_BYTES_PER_TILE], data, GB_BYTES_PER_TILE);
 }
 
 void
diff --git a/stdgb.h b/stdgb.h
index e114235..544fca1 100644
--- a/stdgb.h
+++ b/stdgb.h
@@ -211,6 +211,8 @@ gb_enable_vblank (void);
 void
 gb_wait_vblank (void);
 
+#define GB_BYTES_PER_TILE (16)
+
 void
 gb_define_tile (uint8_t i, const uint8_t *tile_data);
 
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