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Add PlayAnimBackwards macro

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scawful
2024-11-28 17:52:02 -05:00
parent 425ec1d1e1
commit 58b66bc157
1 changed files with 9 additions and 0 deletions
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9
Sprites/ZSpriteLib/sprite_macros.asm
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@@ -59,6 +59,15 @@ macro PlayAnimation(frame_start, frame_end, frame_wait)
+ +
endmacro 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) macro StartOnFrame(frame)
LDA.w SprFrame, x : CMP.b #<frame> : BCS + LDA.w SprFrame, x : CMP.b #<frame> : BCS +
LDA.b #<frame> : STA.w SprFrame, x LDA.b #<frame> : STA.w SprFrame, x