From 59137e94f94a8f14cb3c7726f2f7516c0d158a25 Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Thu, 28 Oct 2021 12:14:08 +1000
Subject: [PATCH] Decompile dmenuNavigateLeft

---
 src/game/debug1.c | 103 +++++++++++++++-------------------------------
 1 file changed, 33 insertions(+), 70 deletions(-)

diff --git a/src/game/debug1.c b/src/game/debug1.c
index 8593a9dd1..1499b8834 100644
--- a/src/game/debug1.c
+++ b/src/game/debug1.c
@@ -164,73 +164,36 @@ void dmenuNavigateRight(void)
 	}
 }
 
-GLOBAL_ASM(
-glabel dmenuNavigateLeft
-/*  f119174:	3c038008 */ 	lui	$v1,0x8008
-/*  f119178:	8c638134 */ 	lw	$v1,-0x7ecc($v1)
-/*  f11917c:	3c078008 */ 	lui	$a3,0x8008
-/*  f119180:	24e78120 */ 	addiu	$a3,$a3,-32480
-/*  f119184:	8ce20000 */ 	lw	$v0,0x0($a3)
-/*  f119188:	8c640000 */ 	lw	$a0,0x0($v1)
-/*  f11918c:	3c058008 */ 	lui	$a1,0x8008
-/*  f119190:	0044082a */ 	slt	$at,$v0,$a0
-/*  f119194:	50200017 */ 	beqzl	$at,.NB0f1191f4
-/*  f119198:	0044082a */ 	slt	$at,$v0,$a0
-/*  f11919c:	8ca58130 */ 	lw	$a1,-0x7ed0($a1)
-/*  f1191a0:	00002025 */ 	or	$a0,$zero,$zero
-/*  f1191a4:	24a5ffff */ 	addiu	$a1,$a1,-1
-/*  f1191a8:	18a00005 */ 	blez	$a1,.NB0f1191c0
-/*  f1191ac:	00000000 */ 	sll	$zero,$zero,0x0
-/*  f1191b0:	24840001 */ 	addiu	$a0,$a0,0x1
-.NB0f1191b4:
-/*  f1191b4:	0085082a */ 	slt	$at,$a0,$a1
-/*  f1191b8:	5420fffe */ 	bnezl	$at,.NB0f1191b4
-/*  f1191bc:	24840001 */ 	addiu	$a0,$a0,0x1
-.NB0f1191c0:
-/*  f1191c0:	18800026 */ 	blez	$a0,.NB0f11925c
-/*  f1191c4:	00047080 */ 	sll	$t6,$a0,0x2
-/*  f1191c8:	006e2821 */ 	addu	$a1,$v1,$t6
-/*  f1191cc:	8caffffc */ 	lw	$t7,-0x4($a1)
-/*  f1191d0:	004fc021 */ 	addu	$t8,$v0,$t7
-/*  f1191d4:	acf80000 */ 	sw	$t8,0x0($a3)
-/*  f1191d8:	8ca60000 */ 	lw	$a2,0x0($a1)
-/*  f1191dc:	0306082a */ 	slt	$at,$t8,$a2
-/*  f1191e0:	1420001e */ 	bnez	$at,.NB0f11925c
-/*  f1191e4:	24c8ffff */ 	addiu	$t0,$a2,-1
-/*  f1191e8:	03e00008 */ 	jr	$ra
-/*  f1191ec:	ace80000 */ 	sw	$t0,0x0($a3)
-/*  f1191f0:	0044082a */ 	slt	$at,$v0,$a0
-.NB0f1191f4:
-/*  f1191f4:	14200008 */ 	bnez	$at,.NB0f119218
-/*  f1191f8:	00002825 */ 	or	$a1,$zero,$zero
-/*  f1191fc:	00602025 */ 	or	$a0,$v1,$zero
-/*  f119200:	8c890004 */ 	lw	$t1,0x4($a0)
-.NB0f119204:
-/*  f119204:	24a50001 */ 	addiu	$a1,$a1,0x1
-/*  f119208:	24840004 */ 	addiu	$a0,$a0,0x4
-/*  f11920c:	0049082a */ 	slt	$at,$v0,$t1
-/*  f119210:	5020fffc */ 	beqzl	$at,.NB0f119204
-/*  f119214:	8c890004 */ 	lw	$t1,0x4($a0)
-.NB0f119218:
-/*  f119218:	00055080 */ 	sll	$t2,$a1,0x2
-/*  f11921c:	006a2021 */ 	addu	$a0,$v1,$t2
-/*  f119220:	8c8bfffc */ 	lw	$t3,-0x4($a0)
-/*  f119224:	24adfffe */ 	addiu	$t5,$a1,-2
-/*  f119228:	004b6023 */ 	subu	$t4,$v0,$t3
-/*  f11922c:	05a00004 */ 	bltz	$t5,.NB0f119240
-/*  f119230:	acec0000 */ 	sw	$t4,0x0($a3)
-/*  f119234:	8c8ffff8 */ 	lw	$t7,-0x8($a0)
-/*  f119238:	018fc021 */ 	addu	$t8,$t4,$t7
-/*  f11923c:	acf80000 */ 	sw	$t8,0x0($a3)
-.NB0f119240:
-/*  f119240:	8c82fffc */ 	lw	$v0,-0x4($a0)
-/*  f119244:	8cf90000 */ 	lw	$t9,0x0($a3)
-/*  f119248:	2448ffff */ 	addiu	$t0,$v0,-1
-/*  f11924c:	0322082a */ 	slt	$at,$t9,$v0
-/*  f119250:	14200002 */ 	bnez	$at,.NB0f11925c
-/*  f119254:	00000000 */ 	sll	$zero,$zero,0x0
-/*  f119258:	ace80000 */ 	sw	$t0,0x0($a3)
-.NB0f11925c:
-/*  f11925c:	03e00008 */ 	jr	$ra
-/*  f119260:	00000000 */ 	sll	$zero,$zero,0x0
-);
+void dmenuNavigateLeft(void)
+{
+	s32 i;
+
+	// First group
+	if (g_DMenuSelectedOption < g_DMenuCurOffsets[0]) {
+		s32 i;
+
+		for (i = 0; i < g_DMenuNumGroups - 1; i++);
+
+		if (i > 0) {
+			g_DMenuSelectedOption += g_DMenuCurOffsets[i - 1];
+
+			if (g_DMenuSelectedOption >= g_DMenuCurOffsets[i]) {
+				g_DMenuSelectedOption = g_DMenuCurOffsets[i] - 1;
+			}
+		}
+		return;
+	}
+
+	// Any other group
+	for (i = 0; g_DMenuSelectedOption >= g_DMenuCurOffsets[i]; i++);
+
+	g_DMenuSelectedOption -= g_DMenuCurOffsets[i - 1];
+
+	if (i - 2 >= 0) {
+		g_DMenuSelectedOption += g_DMenuCurOffsets[i - 2];
+	}
+
+	if (g_DMenuSelectedOption >= g_DMenuCurOffsets[i - 1]) {
+		g_DMenuSelectedOption = g_DMenuCurOffsets[i - 1] - 1;
+	}
+}