Fix mirror portals getting erased when changing worlds

2021-11-20 00:34:57 -06:00
parent 9094d118df
commit 3262c6ff1a
1 changed files with 15 additions and 0 deletions
--- a/owrando.asm
+++ b/owrando.asm
@@ -383,6 +383,21 @@ OWWorldUpdate: ; x = owid of destination screen
 {
    lda.l OWTileWorldAssoc,x : cmp.l $7ef3ca : beq .return
        sta.l $7ef3ca ; change world
+
+        ; activate mirror portal sprite
+        phx : cmp #0 : beq + : lda #1
+        + cmp.l InvertedMode : bne +
+            lda #$09 : pha : bra .setPortalSpriteState
+        + lda #$07 : pha ; some state that allows the portal to persist without it getting overwritten
+        
+        .setPortalSpriteState
+        ldx #$0f
+        - lda $0e20,x : cmp #$6C : bne +
+            pla : sta $0dd0,x : plx : bra .playSfx
+        + dex : bpl -
+        pla : plx
+
+        .playSfx
        lda #$38 : sta $012f ; play sfx - #$3b is an alternative

        ; toggle bunny mode