1 files changed, 155 insertions, 0 deletions
diff --git a/engine/overworld/load_map_part.asm b/engine/overworld/load_map_part.asm
new file mode 100644
index 00000000..23758f28
--- /dev/null
+++ b/engine/overworld/load_map_part.asm
@@ -0,0 +1,155 @@
+_LoadMapPart::
+	ld hl, wSurroundingTiles
+	ld a, [wMetatileStandingY]
+	and a
+	jr z, .top_row
+	ld bc, SURROUNDING_WIDTH * 2
+	add hl, bc
+
+.top_row
+	ld a, [wMetatileStandingX]
+	and a
+	jr z, .left_column
+	inc hl
+	inc hl
+
+.left_column
+	decoord 0, 0
+	ld b, SCREEN_HEIGHT
+.loop
+	ld c, SCREEN_WIDTH
+.loop2
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec c
+	jr nz, .loop2
+	ld a, l
+	add METATILE_WIDTH
+	ld l, a
+	jr nc, .carry
+	inc h
+
+.carry
+	dec b
+	jr nz, .loop
+	ret
+
+UnusedFunction153ba:
+	decoord 2, 2
+	ld bc, (SURROUNDING_WIDTH + 1) * 2
+	add hl, bc
+	ld c, SCREEN_HEIGHT - 4 * 1
+.loop:
+	ld b, SCREEN_WIDTH - SCREEN_META_WIDTH
+.loop2:
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec b
+	jr nz, .loop2
+	ld a, l
+	add SCREEN_META_WIDTH + METATILE_WIDTH
+	ld l, a
+	jr nc, .carry1
+	inc h
+
+.carry1:
+	ld a, e
+	add SCREEN_META_WIDTH
+	ld e, a
+	jr nc, .carry2
+	inc d
+
+.carry2:
+	dec c
+	jr nz, .loop
+	ret
+
+UnusedFunction153dd:
+	decoord 4, 4
+	ld bc, (SURROUNDING_WIDTH + 1) * 4
+	add hl, bc
+	ld c, SCREEN_HEIGHT - 4 * 2
+.loop:
+	ld b, SCREEN_WIDTH - SCREEN_META_WIDTH - METATILE_WIDTH
+.loop2:
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec b
+	jr nz, .loop2
+	ld a, l
+	add SCREEN_META_WIDTH + METATILE_WIDTH * 2
+	ld l, a
+	jr nc, .carry1
+	inc h
+
+.carry1:
+	ld a, e
+	add SCREEN_META_WIDTH + METATILE_WIDTH
+	ld e, a
+	jr nc, .carry2
+	inc d
+
+.carry2:
+	dec c
+	jr nz, .loop
+	ret
+
+UnusedFunction15400:
+	decoord 6, 6
+	ld bc, (SURROUNDING_WIDTH + 1) * 6
+	add hl, bc
+	ld c, SCREEN_HEIGHT - 4 * 3
+.loop:
+	ld b, SCREEN_WIDTH - SCREEN_META_WIDTH - METATILE_WIDTH * 2
+.loop2:
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec b
+	jr nz, .loop2
+	ld a, l
+	add SCREEN_META_WIDTH + METATILE_WIDTH * 3
+	ld l, a
+	jr nc, .carry1
+	inc h
+
+.carry1:
+	ld a, e
+	add SCREEN_META_WIDTH + METATILE_WIDTH * 2
+	ld e, a
+	jr nc, .carry2
+	inc d
+
+.carry2:
+	dec c
+	jr nz, .loop
+	ret
+
+UnusedFunction15423:
+	decoord 8, 8
+	ld bc, (SURROUNDING_WIDTH + 1) * 8
+	add hl, bc
+.loop
+	ld a, [hli]
+	ld [de], a
+	inc de
+	ld a, [hli]
+	ld [de], a
+	ld bc, SCREEN_WIDTH + 2
+	add hl, bc
+	ld a, e
+	add SCREEN_META_WIDTH + METATILE_WIDTH * 3 + 1
+	ld e, a
+	jr nc, .carry
+	inc d
+
+.carry:
+	ld a, [hli]
+	ld [de], a
+	inc de
+	ld a, [hli]
+	ld [de], a
+	ret