1 files changed, 104 insertions, 0 deletions
diff --git a/engine/battle/sliding_intro.asm b/engine/battle/sliding_intro.asm
new file mode 100755
index 000000000..ed78add8e
--- /dev/null
+++ b/engine/battle/sliding_intro.asm
@@ -0,0 +1,104 @@
+BattleIntroSlidingPics: ; 4e980
+	ld a, [rSVBK]
+	push af
+	ld a, $5
+	ld [rSVBK], a
+	call .subfunction1
+	ld a, rSCX - $ff00
+	ld [hLCDCPointer], a
+	call .subfunction2
+	xor a
+	ld [hLCDCPointer], a
+	pop af
+	ld [rSVBK], a
+	ret
+; 4e998
+
+.subfunction1 ; 4e998
+	call .subfunction4
+	ld a, $90
+	ld [hSCX], a
+	ld a, %11100100
+	call DmgToCgbBGPals
+	lb de, %11100100, %11100100
+	call DmgToCgbObjPals
+	ret
+; 4e9ab
+
+.subfunction2 ; 4e9ab
+	ld d, $90
+	ld e, $72
+	ld a, $48
+	inc a
+.loop1
+	push af
+.loop2
+	ld a, [rLY]
+	cp $60
+	jr c, .loop2
+	ld a, d
+	ld [hSCX], a
+	call .subfunction5
+	inc e
+	inc e
+	dec d
+	dec d
+	pop af
+	push af
+	cp $1
+	jr z, .skip1
+	push de
+	call .subfunction3
+	pop de
+
+.skip1
+	call DelayFrame
+	pop af
+	dec a
+	jr nz, .loop1
+	ret
+; 4e9d6
+
+.subfunction3 ; 4e9d6
+	ld hl, Sprites + 1 ; x pixel
+	ld c, $12 ; 18
+	ld de, $4
+.loop3
+	dec [hl]
+	dec [hl]
+	add hl, de
+	dec c
+	jr nz, .loop3
+	ret
+; 4e9e5
+
+.subfunction4 ; 4e9e5
+	ld hl, LYOverrides
+	ld a, $90
+	ld bc, SCREEN_HEIGHT_PX
+	call ByteFill
+	ret
+; 4e9f1
+
+.subfunction5 ; 4e9f1
+	ld hl, LYOverrides
+	ld a, d
+	ld c, $3e ; 62
+.loop4
+	ld [hli], a
+	dec c
+	jr nz, .loop4
+	ld a, e
+	ld c, $22 ; 34
+.loop5
+	ld [hli], a
+	dec c
+	jr nz, .loop5
+	xor a
+	ld c, $30 ; 48
+.loop6
+	ld [hli], a
+	dec c
+	jr nz, .loop6
+	ret
+; 4ea0a