diff --git a/ray/src/ray.tal b/ray/src/ray.tal
index 331d54b..9eb689a 100644
--- a/ray/src/ray.tal
+++ b/ray/src/ray.tal
@@ -144,6 +144,40 @@ JMP2r
 
 	;draw-map JSR2
 
+	.player/x LDZ2
+	.player/y LDZ2
+	.player/r LDZ2 ;ray JSR2
+		#01 ;draw-line JSR2
+
+	.player/x LDZ2
+	.player/y LDZ2
+	.player/r LDZ2 #0040 SUB2 #03ff AND2 ;ray JSR2
+		#02 ;draw-line JSR2
+
+	.player/x LDZ2
+	.player/y LDZ2
+	.player/r LDZ2 #0040 ADD2 #03ff AND2 ;ray JSR2
+		#02 ;draw-line JSR2
+
+JMP2r
+
+@ray ( angle* -- x* y* )
+
+	,&angle STR2
+	#ff01
+	&r
+		#00 OVR STH2k [ LIT2 &angle $2 ] SWP2 ;raycast JSR2
+			SWP2 .player/x LDZ2 STH2kr #01 SFT2 SUB2 ADD2
+			SWP2 .player/y LDZ2 STH2r #01 SFT2 SUB2 ADD2 
+			OVR2 OVR2 ;get-tile JSR2
+			DUP #00 EQU ,&continue JCN
+				POP ROT2 POP2 JMP2r
+				&continue
+				POP POP2 POP2
+		INC GTHk ,&r JCN
+	POP2
+	#0000 #0000
+
 JMP2r
 
 @cast ( -- range tile color )
@@ -163,7 +197,7 @@ JMP2r
 
 JMP2r
 
-@raycast ( range* -- x* y* )
+@raycast ( angle* range* -- x* y* )
 
 	STH2
 	#10 SFT2 ;sin60 ADD2 LDA2