From 08c0d6f895d932be123594efb256e3a989c5223c Mon Sep 17 00:00:00 2001
From: DizzyEggg <jajkodizzy@wp.pl>
Date: Fri, 29 Nov 2024 10:42:32 +0100
Subject: [PATCH] fix sub_80A60D8 fakematch

---
 include/ground_map_2.h |   8 +--
 src/ground_map_2.c     | 116 ++++++++++++++++-------------------------
 2 files changed, 49 insertions(+), 75 deletions(-)

diff --git a/include/ground_map_2.h b/include/ground_map_2.h
index 1ba920a46..1015be5d1 100644
--- a/include/ground_map_2.h
+++ b/include/ground_map_2.h
@@ -6,10 +6,10 @@ typedef struct unkStruct_3001B74
 {
     s16 unk0;
     u8 unk2;
-    u32 unk4;
-    u32 unk8;
+    s32 unk4;
+    s32 unk8;
     s32 unkC;
-    u32 unk10;
+    s32 unk10;
     u32 unk14;
     u32 unk18;
     u32 unk1C;
@@ -27,4 +27,4 @@ void sub_80A5EBC(void);
 void sub_80A5EDC(u8);
 void sub_80A60D8(void);
 
-#endif // GUARD_GROUND_MAP_2_H
\ No newline at end of file
+#endif // GUARD_GROUND_MAP_2_H
diff --git a/src/ground_map_2.c b/src/ground_map_2.c
index f2337fc93..b528a9328 100644
--- a/src/ground_map_2.c
+++ b/src/ground_map_2.c
@@ -149,101 +149,75 @@ void nullsub_123(void)
 
 void sub_80A60D8(void)
 {
-    s32 r0;
-#ifndef NONMATCHING
-    register s32 r1 asm("r1");
-#else
-    s32 r1;
-#endif
-    s32 r3;
-    s32 r4;
-
-    s32 local_00[2]; // sp 0x0
-    s32 local_08[2]; // sp 0x8
-    s32 local_10[2]; // sp 0x10
-    s32 local_18[2]; // sp 0x18
-    s32 local_20[2]; // sp 0x20
-    const s16 *puVar1;
-
     if (gUnknown_3001B74->unk2 == 0)
         return;
 
     switch ((s16)(gUnknown_3001B74->unk0 + 1)) {
-        case 10:
-            r1 = gUnknown_3001B74->unk4;
-            r0 = r1 + 2;
-            gUnknown_3001B74->unk4 = r0;
+        case 10: {
+            s32 localArray[2];
 
-            r4 = gUnknown_3001B74->unk8;
-            r3 = r4 + 1;
-            gUnknown_3001B74->unk8 = r3;
-
-            if (r0 < 0)
-                r0 = r1 + 5;
-
-            gUnknown_3001B74->unkC += (r0 >> 2);
-            r1 = r3;
-            if (r1 < 0)
-                r1 = r4 + 4;
-
-            gUnknown_3001B74->unk10 += (r1 >> 2);
+            gUnknown_3001B74->unk4 += 2;
+            gUnknown_3001B74->unk8 += 1;
+            gUnknown_3001B74->unkC += gUnknown_3001B74->unk4 / 4;
+            gUnknown_3001B74->unk10 += gUnknown_3001B74->unk8 / 4;
             sub_80A4580(gUnknown_3001B78, 0, &gUnknown_3001B74->unkC);
             gUnknown_3001B74->unk4 &= 3;
             gUnknown_3001B74->unk8 &= 3;
-            sub_80A56C0(local_00);
-            local_00[0] -= gUnknown_3001B74->unkC;
-            local_00[1] += gUnknown_3001B74->unk10;
-            sub_80A4580(gUnknown_3001B78, 0, local_00);
-            sub_80A456C(gUnknown_3001B78, 0, local_00);
+            sub_80A56C0(localArray);
+            localArray[0] -= gUnknown_3001B74->unkC;
+            localArray[1] += gUnknown_3001B74->unk10;
+            sub_80A4580(gUnknown_3001B78, 0, localArray);
+            sub_80A456C(gUnknown_3001B78, 0, localArray);
             break;
+        }
         case 11:
         case 12:
         case 13:
-        case 14:
-            sub_80A56C0(local_08);
-            sub_80A456C(gUnknown_3001B78,0,local_08);
+        case 14: {
+            s32 localArray[2];
+
+            sub_80A56C0(localArray);
+            sub_80A456C(gUnknown_3001B78,0,localArray);
             break;
-        case 15:
-            r1 = gUnknown_3001B74->unk4 ;
-            r0 = r1 + 1;
-            gUnknown_3001B74->unk4  = r0;
+        }
+        case 15: {
+            s32 localArray[2];
 
-            if (r0 < 0)
-                r0 = r1 + 4;
-
-            gUnknown_3001B74->unkC += (r0 >> 2);
+            gUnknown_3001B74->unk4++;
+            gUnknown_3001B74->unkC += gUnknown_3001B74->unk4 / 4;
             sub_80A4580(gUnknown_3001B78, 0, &gUnknown_3001B74->unkC);
             gUnknown_3001B74->unk4 &= 3;
-            sub_80A56C0(local_10);
-            local_10[0] -= gUnknown_3001B74->unkC;
-            local_10[1] = 0;
-            sub_80A4580(gUnknown_3001B78, 0, local_10);
-            sub_80A456C(gUnknown_3001B78, 0, local_10);
+            sub_80A56C0(localArray);
+            localArray[0] -= gUnknown_3001B74->unkC;
+            localArray[1] = 0;
+            sub_80A4580(gUnknown_3001B78, 0, localArray);
+            sub_80A456C(gUnknown_3001B78, 0, localArray);
             break;
-        case 16:
-            r1 = gUnknown_3001B74->unk4;
-            r0 = r1 + 2;
-            gUnknown_3001B74->unk4 = r0;
-            if (r0 < 0)
-                r0 = r1 + 5;
+        }
+        case 16: {
+            s32 localArray[2];
 
-            gUnknown_3001B74->unkC += (r0 >> 2);
+            gUnknown_3001B74->unk4 += 2;
+            gUnknown_3001B74->unkC += gUnknown_3001B74->unk4 / 4;
             sub_80A4580(gUnknown_3001B78, 0, &gUnknown_3001B74->unkC);
             gUnknown_3001B74->unk4 &= 3;
-            sub_80A56C0(local_18);
-            local_18[0] -= gUnknown_3001B74->unkC;
-            local_18[1] = 0;
-            sub_80A4580(gUnknown_3001B78, 0, local_18);
-            sub_80A456C(gUnknown_3001B78, 0, local_18);
+            sub_80A56C0(localArray);
+            localArray[0] -= gUnknown_3001B74->unkC;
+            localArray[1] = 0;
+            sub_80A4580(gUnknown_3001B78, 0, localArray);
+            sub_80A456C(gUnknown_3001B78, 0, localArray);
             break;
-        default:
-            puVar1 = gUnknown_811E5F4[gUnknown_3001B74->unk0];
+        }
+        default: {
+            s32 localArray[2];
+            const s16 *puVar1 = gUnknown_811E5F4[gUnknown_3001B74->unk0];
             if (puVar1[0] == 0) {
-                sub_80A56C0(local_20);
-                sub_80A456C(gUnknown_3001B78,0,local_20);
+                sub_80A56C0(localArray);
+                sub_80A456C(gUnknown_3001B78,0,localArray);
                 break;
             }
-            // NOTE: Fallthrough needed here..
+        }
+        // NOTE: Fallthrough needed here.
         case 0:
             sub_80A456C(gUnknown_3001B78, 0, gUnknown_81177BC);
             break;