From fa53dc24bde642817aa85983d53c8898bb8d70b9 Mon Sep 17 00:00:00 2001
From: octorock <79596758+octorock@users.noreply.github.com>
Date: Sun, 30 Jan 2022 00:19:14 +0100
Subject: [PATCH] Decompile SmallIceBlock

---
 asm/object/smallIceBlock.s        | 742 ------------------------------
 data/const/object/smallIceBlock.s |  18 -
 src/object/smallIceBlock.c        | 330 +++++++++++++
 3 files changed, 330 insertions(+), 760 deletions(-)
 delete mode 100644 asm/object/smallIceBlock.s
 delete mode 100644 data/const/object/smallIceBlock.s
 create mode 100644 src/object/smallIceBlock.c

diff --git a/asm/object/smallIceBlock.s b/asm/object/smallIceBlock.s
deleted file mode 100644
index 71c8cbec..00000000
--- a/asm/object/smallIceBlock.s
+++ /dev/null
@@ -1,742 +0,0 @@
-	.include "asm/macros.inc"
-
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-	thumb_func_start SmallIceBlock
-SmallIceBlock: @ 0x080991A4
-	push {lr}
-	adds r2, r0, #0
-	ldrb r0, [r2, #0xa]
-	cmp r0, #2
-	bhi _080991C4
-	ldr r0, _080991C0 @ =gUnk_08123734
-	ldrb r1, [r2, #0xc]
-	lsls r1, r1, #2
-	adds r1, r1, r0
-	ldr r1, [r1]
-	adds r0, r2, #0
-	bl _call_via_r1
-	b _080991CA
-	.align 2, 0
-_080991C0: .4byte gUnk_08123734
-_080991C4:
-	adds r0, r2, #0
-	bl sub_080996AC
-_080991CA:
-	pop {pc}
-
-	thumb_func_start sub_080991CC
-sub_080991CC: @ 0x080991CC
-	push {r4, lr}
-	adds r4, r0, #0
-	ldrb r0, [r4, #0xa]
-	cmp r0, #2
-	bgt _080991EC
-	cmp r0, #0
-	blt _080991EC
-	adds r0, r4, #0
-	adds r0, #0x86
-	ldrh r0, [r0]
-	bl CheckFlags
-	cmp r0, #0
-	beq _080991EC
-	bl DeleteThisEntity
-_080991EC:
-	movs r2, #1
-	strb r2, [r4, #0xc]
-	ldrb r1, [r4, #0x10]
-	movs r0, #0x80
-	orrs r0, r1
-	strb r0, [r4, #0x10]
-	ldrb r1, [r4, #0x11]
-	movs r0, #0x10
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strb r0, [r4, #0x11]
-	adds r1, r4, #0
-	adds r1, #0x3c
-	movs r0, #7
-	strb r0, [r1]
-	adds r1, #4
-	movs r0, #0x48
-	strb r0, [r1]
-	adds r0, r4, #0
-	adds r0, #0x3f
-	strb r2, [r0]
-	subs r1, #5
-	movs r0, #0x80
-	strb r0, [r1]
-	ldr r0, _08099244 @ =gUnk_080FD408
-	str r0, [r4, #0x48]
-	adds r0, r4, #0
-	bl sub_08099468
-	ldrb r1, [r4, #0xa]
-	adds r0, r4, #0
-	bl InitializeAnimation
-	movs r0, #0x84
-	movs r1, #3
-	movs r2, #0
-	bl CreateObject
-	cmp r0, #0
-	beq _08099242
-	str r4, [r0, #0x50]
-_08099242:
-	pop {r4, pc}
-	.align 2, 0
-_08099244: .4byte gUnk_080FD408
-
-	thumb_func_start sub_08099248
-sub_08099248: @ 0x08099248
-	push {r4, r5, r6, r7, lr}
-	adds r4, r0, #0
-	bl sub_0809963C
-	cmp r0, #0
-	beq _08099280
-	movs r1, #0
-	movs r0, #3
-	strb r0, [r4, #0xc]
-	strb r1, [r4, #0xe]
-	ldr r0, _0809927C @ =0x000001B3
-	bl EnqueueSFX
-	adds r0, r4, #0
-	bl sub_08099330
-	ldrb r0, [r4, #0xa]
-	cmp r0, #0
-	bne _0809930E
-	adds r0, r4, #0
-	adds r0, #0x86
-	ldrh r0, [r0]
-	bl SetFlag
-	b _0809930E
-	.align 2, 0
-_0809927C: .4byte 0x000001B3
-_08099280:
-	adds r0, r4, #0
-	bl sub_0800442E
-	cmp r0, #0
-	bne _0809930E
-	adds r7, r4, #0
-	adds r7, #0x70
-	ldrh r0, [r7]
-	adds r6, r4, #0
-	adds r6, #0x38
-	ldrb r1, [r6]
-	bl GetTileType
-	adds r5, r0, #0
-	ldr r0, _080992B8 @ =0x0000405A
-	cmp r5, r0
-	beq _0809930E
-	adds r0, r5, #0
-	bl sub_08099618
-	cmp r0, #1
-	beq _080992BC
-	cmp r0, #1
-	blo _080992DC
-	cmp r0, #2
-	beq _08099308
-	b _0809930E
-	.align 2, 0
-_080992B8: .4byte 0x0000405A
-_080992BC:
-	movs r0, #2
-	strb r0, [r4, #0xc]
-	movs r0, #0x16
-	strb r0, [r4, #0xe]
-	adds r0, r5, #0
-	subs r0, #0x5b
-	movs r1, #3
-	ands r0, r1
-	lsls r0, r0, #3
-	strb r0, [r4, #0x15]
-	movs r0, #0x20
-	strh r0, [r4, #0x24]
-	adds r0, r4, #0
-	bl sub_080994B8
-	b _0809930E
-_080992DC:
-	movs r0, #0xf
-	movs r1, #0xd
-	movs r2, #0
-	bl CreateObject
-	adds r1, r0, #0
-	cmp r1, #0
-	beq _080992F2
-	adds r0, r4, #0
-	bl CopyPosition
-_080992F2:
-	adds r0, r4, #0
-	adds r0, #0x6c
-	ldrh r0, [r0]
-	ldrh r1, [r7]
-	ldrb r2, [r6]
-	bl SetTile
-	adds r0, r4, #0
-	bl DeleteEntity
-	b _0809930E
-_08099308:
-	adds r0, r4, #0
-	adds r0, #0x6c
-	strh r5, [r0]
-_0809930E:
-	pop {r4, r5, r6, r7, pc}
-
-	thumb_func_start sub_08099310
-sub_08099310: @ 0x08099310
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0809953C
-	cmp r0, #0
-	beq _0809932E
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	adds r0, r4, #0
-	bl sub_08099468
-	movs r0, #0xd9
-	lsls r0, r0, #1
-	bl EnqueueSFX
-_0809932E:
-	pop {r4, pc}
-
-	thumb_func_start sub_08099330
-sub_08099330: @ 0x08099330
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0809963C
-	adds r1, r0, #0
-	cmp r1, #0
-	bne _0809935E
-	ldrb r0, [r4, #0xe]
-	cmp r0, #1
-	bls _0809934A
-	subs r0, #2
-	strb r0, [r4, #0xe]
-	b _0809934C
-_0809934A:
-	strb r1, [r4, #0xe]
-_0809934C:
-	ldrb r0, [r4, #0xe]
-	cmp r0, #0
-	bne _08099364
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	adds r0, r4, #0
-	bl sub_0805EC60
-	b _080993CA
-_0809935E:
-	ldrb r0, [r4, #0xe]
-	adds r0, #1
-	strb r0, [r4, #0xe]
-_08099364:
-	movs r1, #0x80
-	lsls r1, r1, #1
-	ldr r2, _0809939C @ =gUnk_08123748
-	ldrb r0, [r4, #0xe]
-	lsrs r0, r0, #5
-	lsls r0, r0, #1
-	adds r0, r0, r2
-	ldrh r2, [r0]
-	adds r0, r4, #0
-	movs r3, #0
-	bl sub_0805EC9C
-	ldrb r0, [r4, #0xa]
-	cmp r0, #1
-	bne _080993A0
-	adds r0, r4, #0
-	adds r0, #0x86
-	ldrh r3, [r0]
-	adds r0, r4, #0
-	movs r1, #0x53
-	movs r2, #0
-	bl sub_080A2A3C
-	movs r0, #0x72
-	bl SoundReq
-	b _080993BA
-	.align 2, 0
-_0809939C: .4byte gUnk_08123748
-_080993A0:
-	cmp r0, #2
-	bne _080993BA
-	adds r0, r4, #0
-	adds r0, #0x86
-	ldrh r3, [r0]
-	adds r0, r4, #0
-	movs r1, #0x52
-	movs r2, #0
-	bl sub_080A2A3C
-	movs r0, #0x72
-	bl SoundReq
-_080993BA:
-	movs r0, #4
-	strb r0, [r4, #0xc]
-	movs r0, #0x3c
-	strb r0, [r4, #0xe]
-	ldrb r1, [r4, #0x10]
-	movs r0, #0x7f
-	ands r0, r1
-	strb r0, [r4, #0x10]
-_080993CA:
-	pop {r4, pc}
-
-	thumb_func_start sub_080993CC
-sub_080993CC: @ 0x080993CC
-	push {r4, r5, r6, lr}
-	adds r5, r0, #0
-	ldrb r0, [r5, #0xe]
-	subs r1, r0, #1
-	strb r1, [r5, #0xe]
-	lsls r0, r1, #0x18
-	cmp r0, #0
-	bne _080993E2
-	bl DeleteThisEntity
-	b _08099466
-_080993E2:
-	lsls r0, r1, #0x18
-	lsrs r0, r0, #0x18
-	cmp r0, #0x30
-	bne _08099400
-	adds r0, r5, #0
-	adds r0, #0x6c
-	ldrh r0, [r0]
-	adds r1, r5, #0
-	adds r1, #0x70
-	ldrh r1, [r1]
-	adds r2, r5, #0
-	adds r2, #0x38
-	ldrb r2, [r2]
-	bl SetTile
-_08099400:
-	movs r1, #0x80
-	lsls r1, r1, #1
-	ldrb r0, [r5, #0xe]
-	movs r2, #0x3c
-	subs r2, r2, r0
-	lsls r2, r2, #5
-	adds r2, r2, r1
-	adds r0, r5, #0
-	movs r3, #0
-	bl sub_0805EC9C
-	ldrb r1, [r5, #0xe]
-	movs r0, #1
-	ands r0, r1
-	cmp r0, #0
-	beq _08099466
-	movs r0, #0xf
-	movs r1, #0x11
-	movs r2, #0x40
-	bl CreateObject
-	adds r6, r0, #0
-	cmp r6, #0
-	beq _08099466
-	bl Random
-	adds r4, r0, #0
-	asrs r0, r4, #0x10
-	movs r1, #9
-	bl __modsi3
-	adds r2, r0, #0
-	subs r2, #4
-	movs r3, #0xf
-	ands r3, r4
-	adds r4, r6, #0
-	adds r4, #0x29
-	ldrb r1, [r4]
-	movs r0, #8
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strb r0, [r4]
-	lsls r2, r2, #0x10
-	rsbs r3, r3, #0
-	lsls r3, r3, #0x10
-	adds r0, r5, #0
-	adds r1, r6, #0
-	bl PositionRelative
-_08099466:
-	pop {r4, r5, r6, pc}
-
-	thumb_func_start sub_08099468
-sub_08099468: @ 0x08099468
-	push {r4, r5, r6, lr}
-	adds r6, r0, #0
-	movs r0, #0x2e
-	ldrsh r1, [r6, r0]
-	ldr r2, _080994B0 @ =gRoomControls
-	ldrh r0, [r2, #6]
-	subs r1, r1, r0
-	asrs r1, r1, #4
-	movs r3, #0x3f
-	ands r1, r3
-	movs r4, #0x32
-	ldrsh r0, [r6, r4]
-	ldrh r2, [r2, #8]
-	subs r0, r0, r2
-	asrs r0, r0, #4
-	ands r0, r3
-	lsls r0, r0, #6
-	orrs r1, r0
-	adds r4, r6, #0
-	adds r4, #0x70
-	strh r1, [r4]
-	ldrh r0, [r4]
-	adds r5, r6, #0
-	adds r5, #0x38
-	ldrb r1, [r5]
-	bl GetTileIndex
-	adds r1, r6, #0
-	adds r1, #0x6c
-	strh r0, [r1]
-	ldr r0, _080994B4 @ =0x0000405A
-	ldrh r1, [r4]
-	ldrb r2, [r5]
-	bl SetTile
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-_080994B0: .4byte gRoomControls
-_080994B4: .4byte 0x0000405A
-
-	thumb_func_start sub_080994B8
-sub_080994B8: @ 0x080994B8
-	push {r4, r5, r6, lr}
-	adds r5, r0, #0
-	ldr r0, _08099530 @ =0x000001B1
-	bl EnqueueSFX
-	adds r0, r5, #0
-	adds r0, #0x6c
-	ldrh r0, [r0]
-	adds r6, r5, #0
-	adds r6, #0x70
-	ldrh r1, [r6]
-	adds r4, r5, #0
-	adds r4, #0x38
-	ldrb r2, [r4]
-	bl SetTile
-	ldrb r0, [r4]
-	cmp r0, #2
-	bne _080994F8
-	ldrh r0, [r6]
-	movs r1, #1
-	bl GetTileType
-	ldr r1, _08099534 @ =0x0000405A
-	cmp r0, r1
-	bne _080994F8
-	movs r0, #0xc4
-	lsls r0, r0, #2
-	ldrh r1, [r6]
-	movs r2, #1
-	bl sub_08000152
-_080994F8:
-	adds r2, r5, #0
-	adds r2, #0x70
-	ldr r1, _08099538 @ =gUnk_080B4488
-	ldrb r0, [r5, #0x15]
-	lsrs r0, r0, #3
-	lsls r0, r0, #1
-	adds r0, r0, r1
-	movs r1, #0
-	ldrsh r0, [r0, r1]
-	ldrh r2, [r2]
-	adds r0, r0, r2
-	adds r1, r5, #0
-	adds r1, #0x38
-	ldrb r1, [r1]
-	bl GetTileType
-	lsls r0, r0, #0x10
-	lsrs r0, r0, #0x10
-	cmp r0, #0x79
-	beq _08099524
-	cmp r0, #0x77
-	bne _0809952C
-_08099524:
-	adds r1, r5, #0
-	adds r1, #0x63
-	movs r0, #0xfe
-	strb r0, [r1]
-_0809952C:
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-_08099530: .4byte 0x000001B1
-_08099534: .4byte 0x0000405A
-_08099538: .4byte gUnk_080B4488
-
-	thumb_func_start sub_0809953C
-sub_0809953C: @ 0x0809953C
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0800442E
-	cmp r0, #0
-	bne _08099612
-	adds r0, r4, #0
-	bl sub_080AEFE0
-	adds r0, r4, #0
-	bl sub_0800445C
-	ldrb r1, [r4, #0xe]
-	cmp r1, #0
-	beq _08099570
-	ldrh r0, [r4, #0x24]
-	adds r0, #0x10
-	strh r0, [r4, #0x24]
-	subs r0, r1, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _08099570
-	movs r0, #0x80
-	lsls r0, r0, #2
-	strh r0, [r4, #0x24]
-_08099570:
-	ldrb r0, [r4, #0x15]
-	lsrs r0, r0, #3
-	cmp r0, #1
-	beq _080995A0
-	cmp r0, #1
-	bgt _08099582
-	cmp r0, #0
-	beq _08099588
-	b _080995E6
-_08099582:
-	cmp r0, #2
-	beq _080995BA
-	b _080995E6
-_08099588:
-	ldrh r1, [r4, #0x2a]
-	movs r0, #0xe
-	ands r0, r1
-	cmp r0, #0
-	beq _08099612
-	ldrh r1, [r4, #0x32]
-	movs r0, #0xf
-	ands r0, r1
-	subs r0, #7
-	cmp r0, #2
-	bls _080995D0
-	b _080995DE
-_080995A0:
-	ldrh r1, [r4, #0x2a]
-	movs r0, #0xe0
-	lsls r0, r0, #8
-	ands r0, r1
-	cmp r0, #0
-	beq _08099612
-	ldrh r1, [r4, #0x2e]
-	movs r0, #0xf
-	ands r0, r1
-	subs r0, #7
-	cmp r0, #2
-	bls _080995FE
-	b _080995DE
-_080995BA:
-	ldrh r1, [r4, #0x2a]
-	movs r0, #0xe0
-	ands r0, r1
-	cmp r0, #0
-	beq _08099612
-	ldrh r1, [r4, #0x32]
-	movs r0, #0xf
-	ands r0, r1
-	subs r0, #7
-	cmp r0, #2
-	bhi _080995DE
-_080995D0:
-	movs r0, #0x10
-	rsbs r0, r0, #0
-	ands r0, r1
-	adds r0, #8
-	strh r0, [r4, #0x32]
-	movs r0, #1
-	b _08099614
-_080995DE:
-	adds r0, r4, #0
-	bl sub_0809969C
-	b _08099612
-_080995E6:
-	ldrh r1, [r4, #0x2a]
-	movs r0, #0xe0
-	lsls r0, r0, #4
-	ands r0, r1
-	cmp r0, #0
-	beq _08099612
-	ldrh r1, [r4, #0x2e]
-	movs r0, #0xf
-	ands r0, r1
-	subs r0, #7
-	cmp r0, #2
-	bhi _0809960C
-_080995FE:
-	movs r0, #0x10
-	rsbs r0, r0, #0
-	ands r0, r1
-	adds r0, #8
-	strh r0, [r4, #0x2e]
-	movs r0, #1
-	b _08099614
-_0809960C:
-	adds r0, r4, #0
-	bl sub_0809969C
-_08099612:
-	movs r0, #0
-_08099614:
-	pop {r4, pc}
-	.align 2, 0
-
-	thumb_func_start sub_08099618
-sub_08099618: @ 0x08099618
-	push {lr}
-	adds r2, r0, #0
-	ldr r1, _08099620 @ =gUnk_08123750
-	b _08099630
-	.align 2, 0
-_08099620: .4byte gUnk_08123750
-_08099624:
-	ldrh r0, [r1]
-	cmp r0, r2
-	bne _0809962E
-	ldrh r0, [r1, #2]
-	b _08099638
-_0809962E:
-	adds r1, #4
-_08099630:
-	ldrh r0, [r1]
-	cmp r0, #0
-	bne _08099624
-	movs r0, #0
-_08099638:
-	pop {pc}
-	.align 2, 0
-
-	thumb_func_start sub_0809963C
-sub_0809963C: @ 0x0809963C
-	push {r4, r5, r6, lr}
-	adds r5, r0, #0
-	ldrb r0, [r5, #0xb]
-	cmp r0, #0
-	beq _08099684
-	bl GetCurrentRoomProperty
-	adds r4, r0, #0
-	ldrh r0, [r4]
-	bl CheckFlags
-	cmp r0, #0
-	beq _08099684
-	ldr r0, _08099694 @ =gRoomControls
-	ldrh r1, [r0, #6]
-	ldrh r2, [r4, #2]
-	adds r1, r1, r2
-	lsls r1, r1, #0x10
-	lsrs r1, r1, #0x10
-	ldrh r0, [r0, #8]
-	ldrh r6, [r4, #4]
-	adds r0, r0, r6
-	lsls r0, r0, #0x10
-	lsrs r3, r0, #0x10
-	ldrh r2, [r4, #6]
-	movs r6, #0x2e
-	ldrsh r0, [r5, r6]
-	subs r0, r0, r1
-	cmp r2, r0
-	blo _08099684
-	ldrh r1, [r4, #8]
-	movs r2, #0x32
-	ldrsh r0, [r5, r2]
-	subs r0, r0, r3
-	cmp r1, r0
-	bhs _08099698
-_08099684:
-	adds r0, r5, #0
-	adds r0, #0x41
-	ldrb r0, [r0]
-	cmp r0, #0x87
-	beq _08099698
-	movs r0, #0
-	b _0809969A
-	.align 2, 0
-_08099694: .4byte gRoomControls
-_08099698:
-	movs r0, #1
-_0809969A:
-	pop {r4, r5, r6, pc}
-
-	thumb_func_start sub_0809969C
-sub_0809969C: @ 0x0809969C
-	push {lr}
-	movs r1, #0xd
-	movs r2, #0
-	bl CreateFx
-	bl DeleteThisEntity
-	pop {pc}
-
-	thumb_func_start sub_080996AC
-sub_080996AC: @ 0x080996AC
-	push {r4, lr}
-	adds r4, r0, #0
-	ldr r0, [r4, #0x50]
-	ldr r0, [r0, #4]
-	cmp r0, #0
-	bne _080996BC
-	bl DeleteThisEntity
-_080996BC:
-	ldrb r0, [r4, #0xc]
-	cmp r0, #0
-	bne _080996CE
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	adds r0, r4, #0
-	movs r1, #3
-	bl InitializeAnimation
-_080996CE:
-	ldr r0, [r4, #0x50]
-	ldrb r0, [r0, #0xc]
-	cmp r0, #2
-	bhi _08099726
-	ldrb r1, [r4, #0x18]
-	movs r0, #4
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #1
-	orrs r0, r1
-	strb r0, [r4, #0x18]
-	adds r2, r4, #0
-	adds r2, #0x5a
-	ldrb r1, [r2]
-	movs r0, #1
-	ands r0, r1
-	cmp r0, #0
-	beq _08099706
-	movs r0, #0
-	strb r0, [r2]
-	bl Random
-	movs r1, #0x78
-	ands r0, r1
-	adds r0, #0x78
-	adds r1, r4, #0
-	adds r1, #0x59
-	strb r0, [r1]
-_08099706:
-	adds r0, r4, #0
-	bl GetNextFrame
-	ldr r0, [r4, #0x50]
-	adds r1, r4, #0
-	bl CopyPositionAndSpriteOffset
-	ldrh r0, [r4, #0x32]
-	adds r0, #1
-	strh r0, [r4, #0x32]
-	adds r1, r4, #0
-	adds r1, #0x63
-	ldrb r0, [r1]
-	subs r0, #0x11
-	strb r0, [r1]
-	b _08099730
-_08099726:
-	ldrb r1, [r4, #0x18]
-	movs r0, #4
-	rsbs r0, r0, #0
-	ands r0, r1
-	strb r0, [r4, #0x18]
-_08099730:
-	pop {r4, pc}
-	.align 2, 0
diff --git a/data/const/object/smallIceBlock.s b/data/const/object/smallIceBlock.s
deleted file mode 100644
index 9107a43f..00000000
--- a/data/const/object/smallIceBlock.s
+++ /dev/null
@@ -1,18 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-    .align 2
-
-gUnk_08123734:: @ 08123734
-	.4byte sub_080991CC
-	.4byte sub_08099248
-	.4byte sub_08099310
-	.4byte sub_08099330
-	.4byte sub_080993CC
-
-gUnk_08123748:: @ 08123748
-	.incbin "smallIceBlock/gUnk_08123748.bin"
-
-gUnk_08123750:: @ 08123750
-	.incbin "smallIceBlock/gUnk_08123750.bin"
diff --git a/src/object/smallIceBlock.c b/src/object/smallIceBlock.c
new file mode 100644
index 00000000..63542a02
--- /dev/null
+++ b/src/object/smallIceBlock.c
@@ -0,0 +1,330 @@
+/**
+ * @file smallIceBlock.c
+ * @ingroup Objects
+ *
+ * @brief Small Ice Block object
+ */
+
+#define NENT_DEPRECATED
+#include "global.h"
+#include "object.h"
+#include "functions.h"
+
+typedef struct {
+    /*0x00*/ Entity base;
+    /*0x68*/ u8 unk_68[0x4];
+    /*0x6c*/ u16 unk_6c;
+    /*0x6e*/ u8 unk_6e[0x2];
+    /*0x70*/ u16 unk_70;
+    /*0x72*/ u8 unk_72[0x14];
+    /*0x86*/ u16 unk_86;
+} SmallIceBlockEntity;
+
+extern const Hitbox gUnk_080FD408;
+extern const s16 gUnk_080B4488[];
+
+void sub_080996AC(SmallIceBlockEntity*);
+void sub_08099468(SmallIceBlockEntity*);
+bool32 sub_0809963C(SmallIceBlockEntity*);
+u32 sub_08099618(u32);
+void sub_080994B8(SmallIceBlockEntity*);
+void SmallIceBlock_Action3(SmallIceBlockEntity*);
+bool32 sub_0809953C(SmallIceBlockEntity*);
+void sub_0809969C(SmallIceBlockEntity*);
+
+extern void (*const gUnk_08123734[])(SmallIceBlockEntity*);
+extern const u16 gUnk_08123748[];
+extern const u16 gUnk_08123750[];
+
+void SmallIceBlock(SmallIceBlockEntity* this) {
+    if (super->type < 3) {
+        gUnk_08123734[super->action](this);
+    } else {
+        sub_080996AC(this);
+    }
+}
+
+void SmallIceBlock_Init(SmallIceBlockEntity* this) {
+    Entity* obj;
+
+    switch (super->type) {
+        case 0:
+        case 1:
+        case 2:
+            if (CheckFlags(this->unk_86)) {
+                DeleteThisEntity();
+            }
+    }
+    super->action = 1;
+    super->flags |= 0x80;
+    super->updatePriority = 3;
+    super->field_0x3c = 7;
+    super->hurtType = 0x48;
+    super->hitType = 1;
+    super->flags2 = 0x80;
+    super->hitbox = (Hitbox*)&gUnk_080FD408;
+    sub_08099468(this);
+    InitializeAnimation(super, super->type);
+    obj = CreateObject(SMALL_ICE_BLOCK, 3, 0);
+    if (obj != NULL) {
+        obj->parent = super;
+    }
+}
+
+void SmallIceBlock_Action1(SmallIceBlockEntity* this) {
+    u32 tileType;
+    Entity* obj;
+
+    if (sub_0809963C(this)) {
+        super->action = 3;
+        super->actionDelay = 0;
+        EnqueueSFX(SFX_ICE_BLOCK_MELT);
+        SmallIceBlock_Action3(this);
+        if (super->type == 0) {
+            SetFlag(this->unk_86);
+        }
+    } else {
+        if (!sub_0800442E(super)) {
+            tileType = GetTileType(this->unk_70, super->collisionLayer);
+            if (tileType != 0x405a) {
+                switch (sub_08099618(tileType)) {
+                    case 1:
+                        super->action = 2;
+                        super->actionDelay = 0x16;
+                        super->direction = ((tileType - 0x5b) & 3) << 3;
+                        super->speed = 0x20;
+                        sub_080994B8(this);
+                        break;
+                    case 0:
+                        obj = CreateObject(SPECIAL_FX, 0xd, 0);
+                        if (obj != NULL) {
+                            CopyPosition(super, obj);
+                        }
+                        SetTile(this->unk_6c, this->unk_70, super->collisionLayer);
+                        DeleteEntity(super);
+                        break;
+
+                    case 2:
+                        this->unk_6c = (u16)tileType;
+                        break;
+                }
+            }
+        }
+    }
+}
+
+void SmallIceBlock_Action2(SmallIceBlockEntity* this) {
+    if (sub_0809953C(this)) {
+        super->action = 1;
+        sub_08099468(this);
+        EnqueueSFX(SFX_ICE_BLOCK_STOP);
+    }
+}
+
+void SmallIceBlock_Action3(SmallIceBlockEntity* this) {
+    if (sub_0809963C(this) == 0) {
+        if (super->actionDelay >= 2) {
+            super->actionDelay -= 2;
+        } else {
+            super->actionDelay = 0;
+        }
+        if (super->actionDelay == 0) {
+            super->action = 1;
+            sub_0805EC60(super);
+            return;
+        }
+    } else {
+        super->actionDelay++;
+    }
+    sub_0805EC9C(super, 0x100, gUnk_08123748[super->actionDelay >> 5], 0);
+    if (super->type == 1) {
+        sub_080A2A3C(super, 0x53, 0, this->unk_86);
+        SoundReq(SFX_SECRET);
+    } else if (super->type == 2) {
+        sub_080A2A3C(super, 0x52, 0, this->unk_86);
+        SoundReq(SFX_SECRET);
+    }
+    super->action = 4;
+    super->actionDelay = 0x3c;
+    super->flags &= 0x7f;
+}
+
+void SmallIceBlock_Action4(SmallIceBlockEntity* this) {
+    Entity* obj;
+    s32 rand;
+    s32 x;
+    s32 y;
+
+    if (--super->actionDelay == 0) {
+        DeleteThisEntity();
+    } else {
+        if (super->actionDelay == 0x30) {
+            SetTile(this->unk_6c, this->unk_70, super->collisionLayer);
+        }
+        sub_0805EC9C(super, 0x100, (0x3c - super->actionDelay) * 0x20 + 0x100, 0);
+        if ((super->actionDelay & 1) != 0) {
+            obj = CreateObject(SPECIAL_FX, 0x11, 0x40);
+            if (obj != NULL) {
+                rand = Random();
+                x = ((rand >> 0x10) % 9) - 4;
+                y = rand & 0xf;
+                obj->spritePriority.b0 = 3;
+                PositionRelative(super, obj, x * 0x10000, -y * 0x10000);
+            }
+        }
+    }
+}
+
+void sub_08099468(SmallIceBlockEntity* this) {
+    this->unk_70 = COORD_TO_TILE(super);
+    this->unk_6c = GetTileIndex(this->unk_70, super->collisionLayer);
+    SetTile(0x405a, this->unk_70, super->collisionLayer);
+}
+
+void sub_080994B8(SmallIceBlockEntity* this) {
+    u16 tileType;
+
+    EnqueueSFX(SFX_ICE_BLOCK_SLIDE);
+    SetTile(this->unk_6c, this->unk_70, super->collisionLayer);
+    if ((super->collisionLayer == 2) && (GetTileType(this->unk_70, 1) == 0x405a)) {
+        sub_08000152(0x310, this->unk_70, 1);
+    }
+    tileType = GetTileType(this->unk_70 + gUnk_080B4488[super->direction >> 3], super->collisionLayer);
+    if (tileType == 0x79 || tileType == 0x77) {
+        super->spriteOffsetY = -2;
+    }
+}
+
+bool32 sub_0809953C(SmallIceBlockEntity* this) {
+    u8 bVar1;
+    u8 uVar2;
+    u32 uVar3;
+    u16 uVar4;
+
+    uVar3 = sub_0800442E(super);
+    if (uVar3 != 0) {
+        return 0;
+    }
+    sub_080AEFE0(super);
+    sub_0800445C(super);
+    if (super->actionDelay != 0) {
+        super->speed += 0x10;
+        if (--super->actionDelay == 0) {
+            super->speed = 0x200;
+        }
+    }
+    switch (super->direction >> 3) {
+        case 0:
+            if ((super->collisions & 0xe) == 0) {
+                return 0;
+            }
+            if ((u32)(super->y.HALF.HI & 0xf) - 7 < 3) {
+                super->y.HALF.HI = (super->y.HALF.HI & 0xfff0) + 8;
+                return 1;
+            }
+            sub_0809969C(this);
+            break;
+        case 1:
+            if ((super->collisions & 0xe000) == 0) {
+                return FALSE;
+            }
+            if ((u32)(super->x.HALF.HI & 0xf) - 7 < 3) {
+                super->x.HALF.HI = (super->x.HALF.HI & 0xfff0) + 8;
+                return TRUE;
+            }
+            sub_0809969C(this);
+            break;
+        case 2:
+            if ((super->collisions & 0xe0) == 0) {
+                return FALSE;
+            }
+            if ((u32)(super->y.HALF.HI & 0xf) - 7 < 3) {
+                super->y.HALF.HI = (super->y.HALF.HI & 0xfff0) + 8;
+                return TRUE;
+            }
+            sub_0809969C(this);
+            break;
+        default:
+            if ((super->collisions & 0xe00) != 0) {
+                if ((u32)(super->x.HALF.HI & 0xf) - 7 < 3) {
+                    super->x.HALF.HI = (super->x.HALF.HI & 0xfff0) + 8;
+                    return TRUE;
+                }
+                sub_0809969C(this);
+            }
+            break;
+    }
+    return FALSE;
+}
+
+u32 sub_08099618(u32 param_1) {
+    const u16* it;
+    for (it = gUnk_08123750; *it != 0; it += 2) {
+        if (*it == param_1) {
+            return it[1];
+        }
+    }
+    return 0;
+}
+
+bool32 sub_0809963C(SmallIceBlockEntity* this) {
+    u16* var;
+    u16 x;
+    u16 y;
+
+    if (super->type2 != 0) {
+        var = (u16*)GetCurrentRoomProperty(super->type2);
+        if (CheckFlags(var[0])) {
+            x = var[1] + gRoomControls.origin_x;
+            y = var[2] + gRoomControls.origin_y;
+            if (var[3] >= (u32)(super->x.HALF.HI - x) && var[4] >= (u32)(super->y.HALF.HI - y)) {
+                return TRUE;
+            }
+        }
+    }
+    if (super->bitfield == 0x87) {
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void sub_0809969C(SmallIceBlockEntity* this) {
+    CreateFx(super, 0xd, 0);
+    DeleteThisEntity();
+}
+
+void sub_080996AC(SmallIceBlockEntity* this) {
+    if ((super->parent)->next == NULL) {
+        DeleteThisEntity();
+    }
+    if (super->action == 0) {
+        super->action = 1;
+        InitializeAnimation(super, 3);
+    }
+    if ((super->parent)->action < 3) {
+        super->spriteSettings.draw = 1;
+        if ((super->frame & 1) != 0) {
+            super->frame = 0;
+            super->frameDuration = (Random() & 0x78) + 0x78;
+        }
+        GetNextFrame(super);
+        CopyPositionAndSpriteOffset(super->parent, super);
+        super->y.HALF.HI += 1;
+        super->spriteOffsetY -= 0x11;
+    } else {
+        super->spriteSettings.draw = 0;
+    }
+}
+
+void (*const gUnk_08123734[])(SmallIceBlockEntity*) = {
+    SmallIceBlock_Init, SmallIceBlock_Action1, SmallIceBlock_Action2, SmallIceBlock_Action3, SmallIceBlock_Action4,
+};
+const u16 gUnk_08123748[] = {
+    256,
+    264,
+    271,
+    277,
+};
+const u16 gUnk_08123750[] = {
+    0x405b, 1, 0x405c, 1, 0x405d, 1, 0x405e, 1, 0x7a, 2, 0x78, 2, 0,
+};