diff --git a/asm/non_matchings/code/z_collision_check/func_8005C964.s b/asm/non_matchings/code/z_collision_check/func_8005C964.s
deleted file mode 100644
index 9f9a305071..0000000000
--- a/asm/non_matchings/code/z_collision_check/func_8005C964.s
+++ /dev/null
@@ -1,97 +0,0 @@
-.rdata
-glabel D_8013A768
-    .asciz "../z_collision_check.c"
-    .balign 4
-
-glabel D_8013A780
-    .asciz "\x1b[31m"
-    .balign 4
-
-glabel D_8013A788
-    .asciz "ClObjTris_set3():zelda_malloc()出来ません\n"
-    # EUC-JP: 出来ません。 | Can not.
-    .balign 4
-
-glabel D_8013A7B4
-    .asciz "\x1b[m"
-    .balign 4
-
-.text
-glabel func_8005C964
-/* AD3B04 8005C964 27BDFFD0 */  addiu $sp, $sp, -0x30
-/* AD3B08 8005C968 AFBF002C */  sw    $ra, 0x2c($sp)
-/* AD3B0C 8005C96C AFB30024 */  sw    $s3, 0x24($sp)
-/* AD3B10 8005C970 AFB20020 */  sw    $s2, 0x20($sp)
-/* AD3B14 8005C974 00A09025 */  move  $s2, $a1
-/* AD3B18 8005C978 00809825 */  move  $s3, $a0
-/* AD3B1C 8005C97C AFB40028 */  sw    $s4, 0x28($sp)
-/* AD3B20 8005C980 AFB1001C */  sw    $s1, 0x1c($sp)
-/* AD3B24 8005C984 AFB00018 */  sw    $s0, 0x18($sp)
-/* AD3B28 8005C988 0C016DBB */  jal   func_8005B6EC
-/* AD3B2C 8005C98C AFA7003C */   sw    $a3, 0x3c($sp)
-/* AD3B30 8005C990 8FAE003C */  lw    $t6, 0x3c($sp)
-/* AD3B34 8005C994 3C058014 */  lui   $a1, %hi(D_8013A768) # $a1, 0x8014
-/* AD3B38 8005C998 24A5A768 */  addiu $a1, %lo(D_8013A768) # addiu $a1, $a1, -0x5898
-/* AD3B3C 8005C99C 8DCF0008 */  lw    $t7, 8($t6)
-/* AD3B40 8005C9A0 2406086C */  li    $a2, 2156
-/* AD3B44 8005C9A4 000F2080 */  sll   $a0, $t7, 2
-/* AD3B48 8005C9A8 008F2023 */  subu  $a0, $a0, $t7
-/* AD3B4C 8005C9AC 000420C0 */  sll   $a0, $a0, 3
-/* AD3B50 8005C9B0 008F2023 */  subu  $a0, $a0, $t7
-/* AD3B54 8005C9B4 00042080 */  sll   $a0, $a0, 2
-/* AD3B58 8005C9B8 0C01EBB8 */  jal   ZeldaArena_MallocDebug
-/* AD3B5C 8005C9BC AE4F0018 */   sw    $t7, 0x18($s2)
-/* AD3B60 8005C9C0 1440000D */  bnez  $v0, .L8005C9F8
-/* AD3B64 8005C9C4 AE42001C */   sw    $v0, 0x1c($s2)
-/* AD3B68 8005C9C8 3C048014 */  lui   $a0, %hi(D_8013A780) # $a0, 0x8014
-/* AD3B6C 8005C9CC AE400018 */  sw    $zero, 0x18($s2)
-/* AD3B70 8005C9D0 0C00084C */  jal   osSyncPrintf
-/* AD3B74 8005C9D4 2484A780 */   addiu $a0, %lo(D_8013A780) # addiu $a0, $a0, -0x5880
-/* AD3B78 8005C9D8 3C048014 */  lui   $a0, %hi(D_8013A788) # $a0, 0x8014
-/* AD3B7C 8005C9DC 0C00084C */  jal   osSyncPrintf
-/* AD3B80 8005C9E0 2484A788 */   addiu $a0, %lo(D_8013A788) # addiu $a0, $a0, -0x5878
-/* AD3B84 8005C9E4 3C048014 */  lui   $a0, %hi(D_8013A7B4) # $a0, 0x8014
-/* AD3B88 8005C9E8 0C00084C */  jal   osSyncPrintf
-/* AD3B8C 8005C9EC 2484A7B4 */   addiu $a0, %lo(D_8013A7B4) # addiu $a0, $a0, -0x584c
-/* AD3B90 8005C9F0 1000001D */  b     .L8005CA68
-/* AD3B94 8005C9F4 00001025 */   move  $v0, $zero
-.L8005C9F8:
-/* AD3B98 8005C9F8 8E590018 */  lw    $t9, 0x18($s2)
-/* AD3B9C 8005C9FC 2414005C */  li    $s4, 92
-/* AD3BA0 8005CA00 8E50001C */  lw    $s0, 0x1c($s2)
-/* AD3BA4 8005CA04 03340019 */  multu $t9, $s4
-/* AD3BA8 8005CA08 8FB8003C */  lw    $t8, 0x3c($sp)
-/* AD3BAC 8005CA0C 8F11000C */  lw    $s1, 0xc($t8)
-/* AD3BB0 8005CA10 00004012 */  mflo  $t0
-/* AD3BB4 8005CA14 02084821 */  addu  $t1, $s0, $t0
-/* AD3BB8 8005CA18 0209082B */  sltu  $at, $s0, $t1
-/* AD3BBC 8005CA1C 10200011 */  beqz  $at, .L8005CA64
-/* AD3BC0 8005CA20 02602025 */   move  $a0, $s3
-.L8005CA24:
-/* AD3BC4 8005CA24 0C0171B0 */  jal   func_8005C6C0
-/* AD3BC8 8005CA28 02002825 */   move  $a1, $s0
-/* AD3BCC 8005CA2C 02602025 */  move  $a0, $s3
-/* AD3BD0 8005CA30 02002825 */  move  $a1, $s0
-/* AD3BD4 8005CA34 0C0171CC */  jal   func_8005C730
-/* AD3BD8 8005CA38 02203025 */   move  $a2, $s1
-/* AD3BDC 8005CA3C 8E4B0018 */  lw    $t3, 0x18($s2)
-/* AD3BE0 8005CA40 8E4A001C */  lw    $t2, 0x1c($s2)
-/* AD3BE4 8005CA44 2610005C */  addiu $s0, $s0, 0x5c
-/* AD3BE8 8005CA48 01740019 */  multu $t3, $s4
-/* AD3BEC 8005CA4C 2631003C */  addiu $s1, $s1, 0x3c
-/* AD3BF0 8005CA50 00006012 */  mflo  $t4
-/* AD3BF4 8005CA54 014C6821 */  addu  $t5, $t2, $t4
-/* AD3BF8 8005CA58 020D082B */  sltu  $at, $s0, $t5
-/* AD3BFC 8005CA5C 5420FFF1 */  bnezl $at, .L8005CA24
-/* AD3C00 8005CA60 02602025 */   move  $a0, $s3
-.L8005CA64:
-/* AD3C04 8005CA64 24020001 */  li    $v0, 1
-.L8005CA68:
-/* AD3C08 8005CA68 8FBF002C */  lw    $ra, 0x2c($sp)
-/* AD3C0C 8005CA6C 8FB00018 */  lw    $s0, 0x18($sp)
-/* AD3C10 8005CA70 8FB1001C */  lw    $s1, 0x1c($sp)
-/* AD3C14 8005CA74 8FB20020 */  lw    $s2, 0x20($sp)
-/* AD3C18 8005CA78 8FB30024 */  lw    $s3, 0x24($sp)
-/* AD3C1C 8005CA7C 8FB40028 */  lw    $s4, 0x28($sp)
-/* AD3C20 8005CA80 03E00008 */  jr    $ra
-/* AD3C24 8005CA84 27BD0030 */   addiu $sp, $sp, 0x30
diff --git a/include/z64actor.h b/include/z64actor.h
index 7cef190c2c..8aeb9da2c3 100644
--- a/include/z64actor.h
+++ b/include/z64actor.h
@@ -373,6 +373,10 @@ typedef struct {
     /* 0x30 */ float normalDist;
 } ColliderTriItemDim; //size = 0x34
 
+typedef struct {
+    /* 0x00 */ Vec3f poly[3];
+} ColliderTriItemDimInit; //size = 0x24
+
 typedef struct {
     /* 0x00 */ ColliderBody body;
     /* 0x28 */ ColliderTriItemDim dim;
@@ -380,8 +384,8 @@ typedef struct {
 
 typedef struct {
     /* 0x00 */ ColliderBodyInit body;
-    /* 0x18 */ ColliderTriItemDim dim;
-} ColliderTriItemInit;
+    /* 0x18 */ ColliderTriItemDimInit dim;
+} ColliderTriItemInit; //size 0x3C
 
 typedef struct
 {
@@ -390,6 +394,13 @@ typedef struct
     /* 0x1C */ ColliderTriItem* list;
 } ColliderTris; //size = 0x20
 
+typedef struct
+{
+    /* 0x00 */ ColliderInit body;
+    /* 0x08 */ s32 count;
+    /* 0x0C */ ColliderTriItemInit* list;
+} ColliderTrisInit;
+
 typedef struct
 {
     /* 0x00 */ Actor* actor;
diff --git a/src/code/z_collision_check.c b/src/code/z_collision_check.c
index 5b1ba3e052..ac633d529b 100644
--- a/src/code/z_collision_check.c
+++ b/src/code/z_collision_check.c
@@ -595,7 +595,7 @@ s32 func_8005C5F8(GlobalContext* globalCtx, ColliderTriItemDim* dim)
 }
 
 //Copy ColliderTriItemDim
-s32 func_8005C608(GlobalContext* globalCtx, ColliderTriItemDim* dest, ColliderTriItemDim* src)
+s32 func_8005C608(GlobalContext* globalCtx, ColliderTriItemDim* dest, ColliderTriItemDimInit* src)
 {
     Vec3f* d;
     Vec3f* s;
@@ -702,8 +702,33 @@ s32 func_8005C8C8(GlobalContext* globalCtx, ColliderTris* tris) {
     return 1;
 }
 
+//ClObjTris_set3 (maskB = 0x10)
+s32 func_8005C964(GlobalContext* globalCtx, ColliderTris* dest, Actor* actor, ColliderTrisInit* src) {
+    ColliderTriItem* destNext;
+    ColliderTriItemInit* srcNext;
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_collision_check/func_8005C964.s")
+    func_8005B6EC(globalCtx, &dest->base, actor, &src->body);
+    dest->count = src->count;
+    dest->list = ZeldaArena_MallocDebug(dest->count * sizeof(ColliderTriItem), "../z_collision_check.c", 2156);
+    if (dest->list == NULL) {
+        dest->count = 0;
+        osSyncPrintf("\x1b[31m");
+        osSyncPrintf("ClObjTris_set3():zelda_malloc()出来ません\n"); //EUC-JP: 出来ません。 | Can not.
+        osSyncPrintf("\x1b[m");
+        return 0;
+    }
+    destNext = dest->list;
+    srcNext = src->list;
+
+    while (destNext < dest->list + dest->count)
+    {
+        func_8005C6C0(globalCtx, destNext);
+        func_8005C730(globalCtx, destNext, srcNext);
+        destNext++;
+        srcNext++;
+    }
+    return 1;
+}
 
 #pragma GLOBAL_ASM("asm/non_matchings/code/z_collision_check/func_8005CA88.s")