1 files changed, 3 insertions, 2 deletions
diff --git a/env.h b/env.h
index c62f884..7a9266a 100644
--- a/env.h
+++ b/env.h
@@ -23,8 +23,9 @@ typedef struct {
 	f32 day_amount;
 	f32 twilight_amount;
 
-	f32 cycle;
-	f32 day_len;
+	f32 day_cur; /* starting phase, 0 inclusive to 1 exclusive */
+	f32 day_len;    /* real seconds per complete lighting cycle */
+	f32 cycle;      /* current lighting phase */
 
 	/* sun/moon textures */
 	cstr sun_tex_key, moon_tex_key;