diff options
| author | luckytyphlosion <alan.rj.huang@gmail.com> | 2015-05-10 14:54:05 -0400 |
|---|---|---|
| committer | luckytyphlosion <alan.rj.huang@gmail.com> | 2015-05-10 14:54:05 -0400 |
| commit | 8d1f49959a34366d420b690cacd55df739fd63be (patch) | |
| tree | 1f128ce5483da5bb70067e78904de4282562ef90 /home/vcopy.asm | |
| parent | e25fab40cff557ed14bbc991d20950008a6ebd2a (diff) | |
Slight changes within vcopy.asm
Changes: Game Freak learned that ld [$xxxx],sp exists, and uses that to save a bit of space/time.
Diffstat (limited to 'home/vcopy.asm')
| -rw-r--r-- | home/vcopy.asm | 58 |
1 files changed, 16 insertions, 42 deletions
diff --git a/home/vcopy.asm b/home/vcopy.asm index d42293d9..bc2bbaf2 100644 --- a/home/vcopy.asm +++ b/home/vcopy.asm @@ -115,15 +115,11 @@ RedrawExposedScreenEdge:: ; 1d01 (0:1d01) ; on when talking to sprites, battling, using menus, etc. This is because ; the above function, RedrawExposedScreenEdge, is used when walking to ; improve efficiency. -AutoBgMapTransfer:: ; 1d57 (0:1d57) +AutoBgMapTransfer:: ; 1b37 (0:1b30) ld a,[H_AUTOBGTRANSFERENABLED] and a ret z - ld hl,[sp + 0] - ld a,h - ld [H_SPTEMP],a - ld a,l - ld [H_SPTEMP + 1],a ; save stack pinter + ld [H_SPTEMP],sp ; save stack pinter ld a,[H_AUTOBGTRANSFERPORTION] and a jr z,.transferTopThird @@ -201,11 +197,7 @@ VBlankCopyBgMap:: ; 1de1 (0:1de1) ld a,[H_VBCOPYBGSRC] ; doubles as enabling byte and a ret z - ld hl,[sp + 0] - ld a,h - ld [H_SPTEMP],a - ld a,l - ld [H_SPTEMP + 1],a ; save stack pointer + ld [H_SPTEMP],sp ; save stack pointer ld a,[H_VBCOPYBGSRC] ld l,a ld a,[H_VBCOPYBGSRC + 1] @@ -234,11 +226,7 @@ VBlankCopyDouble:: and a ret z - ld hl, [sp + 0] - ld a, h - ld [H_SPTEMP], a - ld a, l - ld [H_SPTEMP + 1], a + ld [H_SPTEMP],sp ; save stack pointer ld a, [H_VBCOPYDOUBLESRC] ld l, a @@ -281,16 +269,9 @@ VBlankCopyDouble:: dec b jr nz, .loop - ld a, l - ld [H_VBCOPYDOUBLEDEST], a - ld a, h - ld [H_VBCOPYDOUBLEDEST + 1], a - - ld hl, [sp + 0] - ld a, l - ld [H_VBCOPYDOUBLESRC], a - ld a, h - ld [H_VBCOPYDOUBLESRC + 1], a + ld [H_VBCOPYDOUBLESRC],sp + ld sp,hl ; load destination into sp to save time with ld [$xxxx],sp + ld [H_VBCOPYDOUBLEDEST], sp ld a, [H_SPTEMP] ld h, a @@ -313,11 +294,7 @@ VBlankCopy:: and a ret z - ld hl, [sp + 0] - ld a, h - ld [H_SPTEMP], a - ld a, l - ld [H_SPTEMP + 1], a + ld [H_SPTEMP],sp ld a, [H_VBCOPYSRC] ld l, a @@ -352,17 +329,10 @@ VBlankCopy:: dec b jr nz, .loop - ld a, l - ld [H_VBCOPYDEST], a - ld a, h - ld [H_VBCOPYDEST + 1], a - - ld hl, [sp + 0] - ld a, l - ld [H_VBCOPYSRC], a - ld a, h - ld [H_VBCOPYSRC + 1], a - + ld [H_VBCOPYSRC],sp + ld sp,hl + ld [H_VBCOPYDEST],sp + ld a, [H_SPTEMP] ld h, a ld a, [H_SPTEMP + 1] @@ -380,6 +350,10 @@ UpdateMovingBgTiles:: and a ret z ; no animations if indoors (or if a menu set this to 0) + ld a,[rLY] + cp $90 ; check if not in vblank period??? (maybe if vblank is too long) + ret c + ld a, [$ffd8] inc a ld [$ffd8], a |