From 960675d4ac8cee5a09b8a85398d5e9b343061e16 Mon Sep 17 00:00:00 2001
From: pkali <pawel.kalinowski@gmail.com>
Date: Sat, 23 Jul 2022 15:20:19 -0400
Subject: [PATCH] WIP: drawto barrels

---
 grafproc.asm | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/grafproc.asm b/grafproc.asm
index 0a4d415..66be19b 100644
--- a/grafproc.asm
+++ b/grafproc.asm
@@ -1908,14 +1908,32 @@ EndPut4x4
     sta dmactls
     rts
 .endp
-
-.proc TankBarrel
+; -------------------------------------
+.proc _XtanksTableLHX
+    lda ytankstable,x
+    sta ydraw
+    mva #0 ydraw+1
+X    lda XtanksTableL,x
+    sta xdraw
+    lda XtanksTableH,x
+    sta xdraw+1
+    rts
+.endp
+;--------------------------------------------------
+.proc DrawBarrel
+; X - tank number
+; 
+; changes xdraw, ydraw, xbyte, ybyte
+;--------------------------------------------------
+    jsr _XtanksTableLHX
     ;vx calculation
     ;vx = sin(90-Angle) for Angle <=90
     ;vx = -sin(Angle-90) for 90 < Angle <= 180 
 
     ;cos(Angle) (but we use sin table only so some shenanigans happen)
-    ldx Angle
+    lda AngleTable,x
+    sta Angle
+    tax
 
     ;Angle works like this:
     ;0 'degrees' is horizontally right
@@ -1968,7 +1986,8 @@ YangleUnder90
     sta vy+1
     
     # draw by vx vy
-    
+    # add barrel start offset
+    adw #4 
 
 
     rts