diff --git a/wadsrc/static/zscript/constants.zs b/wadsrc/static/zscript/constants.zs
index 3f55d573af..eb35065d6e 100644
--- a/wadsrc/static/zscript/constants.zs
+++ b/wadsrc/static/zscript/constants.zs
@@ -440,6 +440,9 @@ enum EBlockFlags
 	BLOCKF_EVERYTHING = 32,
 	BLOCKF_RAILING = 64,
 	BLOCKF_USE = 128,
+	BLOCKF_SIGHT = 256,
+	BLOCKF_HITSCAN = 512,
+	BLOCKF_SOUND = 1024,
 };
 
 // Pointer constants, bitfield-enabled