Remove all code from main.asm (some labeled INCBINs, like out-of-context graphics, are still present)

engine/routines/ stores isolated out-of-context routines as individual files. It might be preferable later to append them to their related engine/ files in unique little SECTIONs, relying on the linkerscript to place them appropriately; or some other organization method. In the meantime, they're now easily findable apart from main.asm's other content.

1 files changed, 36 insertions, 0 deletions

diff --git a/engine/routines/loadmappart.asm b/engine/routines/loadmappart.asm
new file mode 100644
index 000000000..2184ebf7e
--- /dev/null
+++ b/engine/routines/loadmappart.asm
@@ -0,0 +1,36 @@
+_LoadMapPart:: ; 4d15b
+	ld hl, wMisc
+	ld a, [wMetatileStandingY]
+	and a
+	jr z, .top_row
+	ld bc, WMISC_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 4
+	ld l, a
+	jr nc, .carry
+	inc h
+
+.carry
+	dec b
+	jr nz, .loop
+	ret