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Diffstat (limited to 'engine/menus/savemenu_copytilemapatonce.asm')
-rw-r--r--engine/menus/savemenu_copytilemapatonce.asm25
1 files changed, 16 insertions, 9 deletions
diff --git a/engine/menus/savemenu_copytilemapatonce.asm b/engine/menus/savemenu_copytilemapatonce.asm
index 51b7ea8fe..2f30b7c7e 100644
--- a/engine/menus/savemenu_copytilemapatonce.asm
+++ b/engine/menus/savemenu_copytilemapatonce.asm
@@ -3,33 +3,37 @@ SaveMenu_CopyTilemapAtOnce:
and a
jp z, WaitBGMap
-; The following is a modified version of CopyTilemapAtOnce.
+; The following is a modified version of _CopyTilemapAtOnce
+; that waits for [rLY] to be $60 instead of $80 - 1.
ldh a, [hBGMapMode]
push af
xor a
ldh [hBGMapMode], a
+
ldh a, [hMapAnims]
push af
xor a
ldh [hMapAnims], a
-.WaitLY:
+
+.wait
ldh a, [rLY]
cp $60
- jr c, .WaitLY
+ jr c, .wait
di
ld a, BANK(vBGMap2)
ldh [rVBK], a
hlcoord 0, 0, wAttrmap
- call .CopyTilemapAtOnce
+ call .CopyBGMapViaStack
ld a, BANK(vBGMap0)
ldh [rVBK], a
hlcoord 0, 0
- call .CopyTilemapAtOnce
-.WaitLY2:
+ call .CopyBGMapViaStack
+
+.wait2
ldh a, [rLY]
cp $60
- jr c, .WaitLY2
+ jr c, .wait2
ei
pop af
@@ -38,7 +42,8 @@ SaveMenu_CopyTilemapAtOnce:
ldh [hBGMapMode], a
ret
-.CopyTilemapAtOnce:
+.CopyBGMapViaStack:
+; Copy all tiles to vBGMap
ld [hSPBuffer], sp
ld sp, hl
ldh a, [hBGMapAddress + 1]
@@ -46,16 +51,18 @@ SaveMenu_CopyTilemapAtOnce:
ld l, 0
ld a, SCREEN_HEIGHT
ldh [hTilesPerCycle], a
- ld b, 1 << 1
+ ld b, 1 << 1 ; not in v/hblank
ld c, LOW(rSTAT)
.loop
rept SCREEN_WIDTH / 2
pop de
+; if in v/hblank, wait until not in v/hblank
.loop\@
ldh a, [c]
and b
jr nz, .loop\@
+; load vBGMap
ld [hl], e
inc l
ld [hl], d