From 58b66bc157040c00c7da2b618bd53cc9dcbd506a Mon Sep 17 00:00:00 2001
From: scawful <justin.scofield@outlook.com>
Date: Thu, 28 Nov 2024 17:52:02 -0500
Subject: [PATCH] Add PlayAnimBackwards macro

---
 Sprites/ZSpriteLib/sprite_macros.asm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Sprites/ZSpriteLib/sprite_macros.asm b/Sprites/ZSpriteLib/sprite_macros.asm
index 9315474..f0a169a 100644
--- a/Sprites/ZSpriteLib/sprite_macros.asm
+++ b/Sprites/ZSpriteLib/sprite_macros.asm
@@ -59,6 +59,15 @@ macro PlayAnimation(frame_start, frame_end, frame_wait)
   +
 endmacro
 
+macro PlayAnimBackwards(frame_start, frame_end, frame_wait)
+  LDA.w SprTimerB, X : BNE +
+    LDA.w SprFrame, X : DEC : STA.w SprFrame, X : CMP.b #<frame_end> : BCS .noframereset
+      LDA.b #<frame_start> : STA.w SprFrame, X
+    .noframereset
+    LDA.b #<frame_wait> : STA.w SprTimerB, X
+  +
+endmacro
+
 macro StartOnFrame(frame)
   LDA.w SprFrame, x : CMP.b #<frame> : BCS +
     LDA.b #<frame> : STA.w SprFrame, x