Add PlayAnimBackwards macro

2024-11-28 17:52:02 -05:00
parent 425ec1d1e1
commit 58b66bc157
1 changed files with 9 additions and 0 deletions
--- 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