From 155bb03f469d6183fc8bac015da35d563b3bea45 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sat, 18 Nov 2017 21:09:42 -0500
Subject: [PATCH] sub_800C210

---
 asm/link_rfu.s   | 56 ------------------------------------------------
 include/librfu.h |  2 +-
 src/link_rfu.c   | 27 ++++++++++++++++++++++-
 3 files changed, 27 insertions(+), 58 deletions(-)

diff --git a/asm/link_rfu.s b/asm/link_rfu.s
index 7d8c8b2b18..5354304ee5 100644
--- a/asm/link_rfu.s
+++ b/asm/link_rfu.s
@@ -5,62 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800C210
-sub_800C210: @ 800C210
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r1, r0, 24
-	ldr r6, =gUnknown_03004140
-	adds r3, r6, 0
-	adds r3, 0x30
-	ldrb r2, [r3]
-	adds r0, r1, 0
-	ands r0, r2
-	cmp r0, 0
-	beq _0800C26C
-	adds r0, r2, 0
-	bics r0, r1
-	strb r0, [r3]
-	movs r4, 0
-	ldr r7, =gUnknown_03007890
-	movs r5, 0x1
-	adds r3, 0x4
-	movs r2, 0
-_0800C236:
-	adds r0, r1, 0
-	asrs r0, r4
-	ands r0, r5
-	cmp r0, 0
-	beq _0800C246
-	lsls r0, r4, 1
-	adds r0, r3
-	strh r2, [r0]
-_0800C246:
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x3
-	bls _0800C236
-	ldr r0, [r7]
-	ldrb r4, [r0, 0x3]
-	ands r4, r1
-	cmp r4, 0
-	beq _0800C260
-	adds r0, r4, 0
-	bl sub_800D334
-_0800C260:
-	ldr r0, =gUnknown_03004140
-	strh r4, [r0, 0x14]
-	movs r0, 0x33
-	adds r1, r4, 0
-	bl sub_800D30C
-_0800C26C:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_800C210
-
 	thumb_func_start sub_800C27C
 sub_800C27C: @ 800C27C
 	push {r4,r5,lr}
diff --git a/include/librfu.h b/include/librfu.h
index 481845f095..292b144064 100644
--- a/include/librfu.h
+++ b/include/librfu.h
@@ -132,7 +132,7 @@ struct RfuUnk5
     u8 unk_00;
     u8 filler_01[2];
     u8 unk_03;
-    u8 filler_04[4];
+    u8 unk_04[4];
     u8 unk_08;
     u8 filler_09[11];
     u16 unk_14;
diff --git a/src/link_rfu.c b/src/link_rfu.c
index 8d81cddc4d..32365debb5 100644
--- a/src/link_rfu.c
+++ b/src/link_rfu.c
@@ -25,6 +25,7 @@ void sub_800C000(void);
 void sub_800CEB0(u16 unk0);
 void sub_800C7B4(u16 unk0, u16 unk1);
 void sub_800D30C(u8 a0, u8 a1);
+void sub_800D334(u8 a0);
 void sub_800D610(void);
 
 // .rodata
@@ -209,7 +210,7 @@ u8 sub_800C12C(u16 r6, u16 r8)
         sub_800D30C(0xF3, 0x01);
         return 2;
     }
-    for (i = 0; i < gUnknown_03007890->unk_08; i ++)
+    for (i = 0; i < gUnknown_03007890->unk_08; i++)
     {
         tmp = &gUnknown_03007890[i];
         if (tmp->unk_14 == r6)
@@ -241,3 +242,27 @@ u8 sub_800C12C(u16 r6, u16 r8)
     }
     return 0;
 }
+
+void sub_800C210(u8 a0)
+{
+    u8 i;
+
+    if (a0 & gUnknown_03004140.unk_30)
+    {
+        gUnknown_03004140.unk_30 &= ~a0;
+        for (i = 0; i < 4; i++)
+        {
+            if ((a0 >> i) & 1)
+            {
+                gUnknown_03004140.unk_34[i] = 0;
+            }
+        }
+        i = gUnknown_03007890->unk_03 & a0;
+        if (i)
+        {
+            sub_800D334(i);
+        }
+        gUnknown_03004140.unk_14 = i;
+        sub_800D30C(0x33, i);
+    }
+}