From bbf2f51a02b2544f1bef32a5868503b474ae2fef Mon Sep 17 00:00:00 2001
From: Rangi <remy.oukaour+rangi42@gmail.com>
Date: Tue, 7 Jul 2020 18:50:58 -0400
Subject: Move all code out of home.asm into home/

This results in 64 home/*.asm files, comparable to pokecrystal's 57.
---
 home/pathfinding.asm | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 home/pathfinding.asm

(limited to 'home/pathfinding.asm')

diff --git a/home/pathfinding.asm b/home/pathfinding.asm
new file mode 100644
index 00000000..aca5a763
--- /dev/null
+++ b/home/pathfinding.asm
@@ -0,0 +1,65 @@
+; calculates the difference |a-b|, setting carry flag if a<b
+CalcDifference::
+	sub b
+	ret nc
+	cpl
+	add $1
+	scf
+	ret
+
+MoveSprite::
+; move the sprite [hSpriteIndex] with the movement pointed to by de
+; actually only copies the movement data to wNPCMovementDirections for later
+	call SetSpriteMovementBytesToFF
+MoveSprite_::
+	push hl
+	push bc
+	call GetSpriteMovementByte1Pointer
+	xor a
+	ld [hl], a
+	ld hl, wNPCMovementDirections
+	ld c, 0
+
+.loop
+	ld a, [de]
+	ld [hli], a
+	inc de
+	inc c
+	cp $FF ; have we reached the end of the movement data?
+	jr nz, .loop
+
+	ld a, c
+	ld [wNPCNumScriptedSteps], a ; number of steps taken
+
+	pop bc
+	ld hl, wd730
+	set 0, [hl]
+	pop hl
+	xor a
+	ld [wOverrideSimulatedJoypadStatesMask], a
+	ld [wSimulatedJoypadStatesEnd], a
+	dec a
+	ld [wJoyIgnore], a
+	ld [wWastedByteCD3A], a
+	ret
+
+; divides [hDividend2] by [hDivisor2] and stores the quotient in [hQuotient2]
+DivideBytes::
+	push hl
+	ld hl, hQuotient2
+	xor a
+	ld [hld], a
+	ld a, [hld]
+	and a
+	jr z, .done
+	ld a, [hli]
+.loop
+	sub [hl]
+	jr c, .done
+	inc hl
+	inc [hl]
+	dec hl
+	jr .loop
+.done
+	pop hl
+	ret
-- 
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