Pull a lot of engine out of main.asm

1 files changed, 51 insertions, 0 deletions

diff --git a/engine/items/itemfinder.asm b/engine/items/itemfinder.asm
new file mode 100755
index 00000000..4ec2a23f
--- /dev/null
+++ b/engine/items/itemfinder.asm
@@ -0,0 +1,51 @@
+HiddenItemNear: ; 7481f (1d:481f)
+	ld hl, HiddenItemCoords
+	ld b, $0
+.asm_74824
+	ld de, $0003
+	ld a, [W_CURMAP]
+	call IsInArrayCummulativeCount
+	ret nc ; return if current map has no hidden items
+	push bc
+	push hl
+	ld hl, $d6f0
+	ld c, b
+	ld b, $2
+	ld a, $10
+	call Predef ; indirect jump to HandleBitArray (f666 (3:7666))
+	ld a, c
+	pop hl
+	pop bc
+	inc b
+	and a
+	inc hl
+	ld d, [hl]
+	inc hl
+	ld e, [hl]
+	inc hl
+	jr nz, .asm_74824 ; 0x74845 $dd
+	ld a, [W_YCOORD]
+	call Func_7486b
+	cp d
+	jr nc, .asm_74824 ; 0x7484e $d4
+	ld a, [W_YCOORD]
+	add $4
+	cp d
+	jr c, .asm_74824 ; 0x74856 $cc
+	ld a, [W_XCOORD]
+	call Func_7486b
+	cp e
+	jr nc, .asm_74824 ; 0x7485f $c3
+	ld a, [W_XCOORD]
+	add $5
+	cp e
+	jr c, .asm_74824 ; 0x74867 $bb
+	scf
+	ret
+
+Func_7486b: ; 7486b (1d:486b)
+	sub $5
+	cp $f0
+	ret c
+	xor a
+	ret