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-rw-r--r--src/light.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/light.h b/src/light.h
index 871426901..1827ab53a 100644
--- a/src/light.h
+++ b/src/light.h
@@ -24,6 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
// This directly sets the range of light
#define LIGHT_MAX 14
+// Light is stored as 4 bits, thus 15 is the maximum.
// This brightness is reserved for sunlight
#define LIGHT_SUN 15