diff --git a/asm/object/objectBlockingStairs.s b/asm/object/objectBlockingStairs.s
deleted file mode 100644
index bfe2cb30..00000000
--- a/asm/object/objectBlockingStairs.s
+++ /dev/null
@@ -1,677 +0,0 @@
-	.include "asm/macros.inc"
-
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-	thumb_func_start ObjectBlockingStairs
-ObjectBlockingStairs: @ 0x08092ED4
-	push {lr}
-	ldr r2, _08092EE8 @ =gUnk_0812283C
-	ldrb r1, [r0, #0xc]
-	lsls r1, r1, #2
-	adds r1, r1, r2
-	ldr r1, [r1]
-	bl _call_via_r1
-	pop {pc}
-	.align 2, 0
-_08092EE8: .4byte gUnk_0812283C
-
-	thumb_func_start sub_08092EEC
-sub_08092EEC: @ 0x08092EEC
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	ldrb r0, [r4, #0xa]
-	bl sub_080932D8
-	cmp r0, #1
-	beq _08092F2C
-	cmp r0, #2
-	beq _08092F3A
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	movs r1, #0
-	movs r2, #0x80
-	strh r2, [r4, #0x24]
-	strb r0, [r4, #0x16]
-	strb r1, [r4, #0xe]
-	strb r1, [r4, #0xf]
-	adds r1, r4, #0
-	adds r1, #0x7a
-	movs r0, #0x20
-	strb r0, [r1]
-	adds r0, r4, #0
-	adds r0, #0x7b
-	strb r2, [r0]
-	ldrb r0, [r4, #0xa]
-	cmp r0, #0
-	bne _08092F48
-	ldr r0, _08092F28 @ =gUnk_080FD288
-	str r0, [r4, #0x48]
-	b _08092F48
-	.align 2, 0
-_08092F28: .4byte gUnk_080FD288
-_08092F2C:
-	movs r0, #4
-	strb r0, [r4, #0xc]
-	ldrh r0, [r4, #0x2e]
-	subs r0, #0x20
-	strh r0, [r4, #0x2e]
-	movs r5, #2
-	b _08092F5E
-_08092F3A:
-	movs r0, #4
-	strb r0, [r4, #0xc]
-	ldrh r0, [r4, #0x2e]
-	adds r0, #0x20
-	strh r0, [r4, #0x2e]
-	movs r5, #3
-	b _08092F5E
-_08092F48:
-	movs r5, #0
-	adds r1, r4, #0
-	adds r1, #0x86
-	ldrh r0, [r1]
-	cmp r0, #0
-	beq _08092F5E
-	bl CheckFlags
-	cmp r0, #0
-	bne _08092F5E
-	movs r5, #1
-_08092F5E:
-	adds r0, r4, #0
-	adds r1, r5, #0
-	bl sub_080931A4
-	pop {r4, r5, pc}
-
-	thumb_func_start sub_08092F68
-sub_08092F68: @ 0x08092F68
-	push {r4, r5, r6, r7, lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, #0
-	ldr r0, _08092FA4 @ =gPlayerEntity
-	movs r2, #0x2e
-	ldrsh r1, [r0, r2]
-	movs r2, #0x2e
-	ldrsh r0, [r6, r2]
-	subs r1, r1, r0
-	mov r8, r1
-	adds r1, r6, #0
-	adds r1, #0x86
-	ldrh r0, [r1]
-	cmp r0, #0
-	beq _08092FA8
-	bl CheckFlags
-	cmp r0, #0
-	bne _08092F92
-	b _080930E6
-_08092F92:
-	adds r0, r6, #0
-	adds r0, #0x7a
-	ldrb r0, [r0]
-	cmp r0, #0
-	beq _08092FA8
-	adds r0, r6, #0
-	bl sub_080932A8
-	b _080930E6
-	.align 2, 0
-_08092FA4: .4byte gPlayerEntity
-_08092FA8:
-	adds r1, r6, #0
-	adds r1, #0x7b
-	ldrb r2, [r1]
-	movs r0, #0x3f
-	ands r0, r2
-	adds r7, r1, #0
-	cmp r0, #0
-	bne _08092FD6
-	movs r0, #0xf
-	movs r4, #0
-	orrs r0, r2
-	strb r0, [r7]
-	adds r0, r6, #0
-	movs r1, #0
-	bl sub_080931A4
-	mov r0, r8
-	cmp r0, #0
-	bge _08092FD6
-	ldrb r0, [r7]
-	movs r1, #0x40
-	orrs r0, r1
-	strb r0, [r7]
-_08092FD6:
-	ldrb r1, [r7]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _08092FEA
-	adds r5, r6, #0
-	adds r5, #0x78
-	ldrh r0, [r5]
-	subs r0, #1
-	b _08092FF2
-_08092FEA:
-	adds r5, r6, #0
-	adds r5, #0x78
-	ldrh r0, [r5]
-	adds r0, #1
-_08092FF2:
-	adds r4, r6, #0
-	adds r4, #0x38
-	ldrb r1, [r4]
-	bl GetTileType
-	adds r1, r0, #0
-	ldr r0, _08093034 @ =0x00004031
-	cmp r1, r0
-	bhi _08093040
-	subs r0, #1
-	cmp r1, r0
-	blo _08093040
-	movs r0, #3
-	strb r0, [r6, #0xc]
-	ldr r0, _08093038 @ =gPlayerEntity
-	ldrb r0, [r0, #0x14]
-	lsls r0, r0, #2
-	strb r0, [r6, #0x15]
-	movs r0, #0x80
-	strh r0, [r6, #0x24]
-	movs r0, #0x40
-	strb r0, [r6, #0xe]
-	adds r0, r6, #0
-	movs r1, #0x50
-	bl RequestPriorityDuration
-	ldr r0, _0809303C @ =0x0000010F
-	bl EnqueueSFX
-	adds r0, r6, #0
-	bl sub_08093248
-	b _080930E6
-	.align 2, 0
-_08093034: .4byte 0x00004031
-_08093038: .4byte gPlayerEntity
-_0809303C: .4byte 0x0000010F
-_08093040:
-	ldr r0, _0809307C @ =gPlayerEntity
-	ldrb r1, [r0, #0x14]
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	beq _080930E6
-	adds r0, r6, #0
-	bl RegisterCarryEntity
-	adds r3, r7, #0
-	ldrb r2, [r3]
-	movs r0, #0x80
-	ands r0, r2
-	cmp r0, #0
-	beq _08093088
-	movs r1, #0x7f
-	ands r1, r2
-	strb r1, [r3]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _0809309C
-	ldr r0, _08093080 @ =0x0000402C
-	ldrh r1, [r5]
-	subs r1, #1
-	ldrb r2, [r4]
-	bl SetTile
-	ldr r0, _08093084 @ =0x0000403D
-	b _080930AA
-	.align 2, 0
-_0809307C: .4byte gPlayerEntity
-_08093080: .4byte 0x0000402C
-_08093084: .4byte 0x0000403D
-_08093088:
-	movs r0, #0x40
-	ands r0, r2
-	cmp r0, #0
-	beq _080930C0
-	mov r1, r8
-	cmp r1, #4
-	ble _080930E6
-	movs r0, #0x3f
-	ands r0, r2
-	strb r0, [r3]
-_0809309C:
-	ldr r0, _080930B8 @ =0x0000403D
-	ldrh r1, [r5]
-	subs r1, #1
-	ldrb r2, [r4]
-	bl SetTile
-	ldr r0, _080930BC @ =0x0000402D
-_080930AA:
-	ldrh r1, [r5]
-	adds r1, #1
-	ldrb r2, [r4]
-	bl SetTile
-	b _080930E6
-	.align 2, 0
-_080930B8: .4byte 0x0000403D
-_080930BC: .4byte 0x0000402D
-_080930C0:
-	mov r1, r8
-	rsbs r0, r1, #0
-	cmp r0, #4
-	ble _080930E6
-	movs r0, #0x40
-	orrs r0, r2
-	strb r0, [r7]
-	ldr r0, _080930EC @ =0x0000402C
-	ldrh r1, [r5]
-	subs r1, #1
-	ldrb r2, [r4]
-	bl SetTile
-	ldr r0, _080930F0 @ =0x0000403D
-	ldrh r1, [r5]
-	adds r1, #1
-	ldrb r2, [r4]
-	bl SetTile
-_080930E6:
-	pop {r3}
-	mov r8, r3
-	pop {r4, r5, r6, r7, pc}
-	.align 2, 0
-_080930EC: .4byte 0x0000402C
-_080930F0: .4byte 0x0000403D
-
-	thumb_func_start sub_080930F4
-sub_080930F4: @ 0x080930F4
-	push {r4, r5, r6, lr}
-	adds r4, r0, #0
-	ldrb r3, [r4, #0xe]
-	cmp r3, #0
-	beq _08093104
-	bl sub_08093280
-	b _08093174
-_08093104:
-	ldr r5, _0809315C @ =gPlayerState
-	ldrb r0, [r5, #5]
-	cmp r0, #0x12
-	bne _08093168
-	ldr r6, _08093160 @ =gPlayerEntity
-	adds r0, r6, #0
-	adds r0, #0x5a
-	ldrb r1, [r0]
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	beq _08093174
-	ldrb r0, [r4, #0xf]
-	adds r0, #1
-	strb r0, [r4, #0xf]
-	lsls r0, r0, #0x18
-	lsrs r0, r0, #0x18
-	cmp r0, #8
-	bls _08093174
-	movs r0, #0x10
-	strb r0, [r5, #0xc]
-	adds r0, r5, #0
-	adds r0, #0x38
-	movs r2, #0x40
-	strb r2, [r0]
-	ldr r0, [r5, #0x30]
-	movs r1, #1
-	orrs r0, r1
-	str r0, [r5, #0x30]
-	strh r3, [r6, #0x2c]
-	strh r3, [r6, #0x30]
-	ldrb r0, [r6, #0x14]
-	movs r1, #4
-	eors r0, r1
-	lsls r0, r0, #2
-	strb r0, [r4, #0x15]
-	strb r2, [r4, #0xe]
-	ldr r0, _08093164 @ =0x0000010F
-	bl EnqueueSFX
-	adds r0, r4, #0
-	bl sub_08093248
-	b _08093174
-	.align 2, 0
-_0809315C: .4byte gPlayerState
-_08093160: .4byte gPlayerEntity
-_08093164: .4byte 0x0000010F
-_08093168:
-	ldrb r0, [r4, #0xd]
-	cmp r0, #6
-	bne _08093174
-	movs r0, #1
-	strb r0, [r4, #0xc]
-	strb r3, [r4, #0xf]
-_08093174:
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-
-	thumb_func_start sub_08093178
-sub_08093178: @ 0x08093178
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0800445C
-	adds r0, r4, #0
-	bl LinearMoveUpdate
-	ldrb r0, [r4, #0xe]
-	subs r0, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _08093198
-	adds r0, r4, #0
-	bl sub_08093334
-_08093198:
-	adds r0, r4, #0
-	bl sub_08093364
-	pop {r4, pc}
-
-	thumb_func_start nullsub_120
-nullsub_120: @ 0x080931A0
-	bx lr
-	.align 2, 0
-
-	thumb_func_start sub_080931A4
-sub_080931A4: @ 0x080931A4
-	push {r4, r5, r6, r7, lr}
-	mov r7, r8
-	push {r7}
-	adds r5, r1, #0
-	movs r1, #0x2e
-	ldrsh r2, [r0, r1]
-	ldr r3, _080931F0 @ =gRoomControls
-	ldrh r1, [r3, #6]
-	subs r2, r2, r1
-	asrs r2, r2, #4
-	movs r4, #0x3f
-	ands r2, r4
-	movs r6, #0x32
-	ldrsh r1, [r0, r6]
-	ldrh r3, [r3, #8]
-	subs r1, r1, r3
-	asrs r1, r1, #4
-	ands r1, r4
-	lsls r1, r1, #6
-	orrs r2, r1
-	adds r1, r0, #0
-	adds r1, #0x78
-	strh r2, [r1]
-	ldrh r1, [r1]
-	subs r1, #0x40
-	mov r8, r1
-	adds r0, #0x38
-	ldrb r7, [r0]
-	cmp r5, #1
-	beq _080931F4
-	cmp r5, #1
-	blo _0809320C
-	cmp r5, #2
-	beq _080931FC
-	cmp r5, #3
-	beq _08093204
-	b _0809320C
-	.align 2, 0
-_080931F0: .4byte gRoomControls
-_080931F4:
-	ldr r0, _080931F8 @ =gUnk_08122862
-	b _0809320E
-	.align 2, 0
-_080931F8: .4byte gUnk_08122862
-_080931FC:
-	ldr r0, _08093200 @ =gUnk_08122874
-	b _0809320E
-	.align 2, 0
-_08093200: .4byte gUnk_08122874
-_08093204:
-	ldr r0, _08093208 @ =gUnk_08122886
-	b _0809320E
-	.align 2, 0
-_08093208: .4byte gUnk_08122886
-_0809320C:
-	ldr r0, _08093230 @ =gUnk_08122850
-_0809320E:
-	movs r4, #0
-	movs r6, #0
-	adds r5, r0, #0
-_08093214:
-	mov r0, r8
-	adds r1, r0, r6
-	adds r1, r1, r4
-	subs r1, #1
-	ldrh r0, [r5]
-	adds r2, r7, #0
-	bl SetTile
-	cmp r4, #2
-	beq _08093234
-	cmp r4, #5
-	beq _08093238
-	b _0809323A
-	.align 2, 0
-_08093230: .4byte gUnk_08122850
-_08093234:
-	movs r6, #0x3d
-	b _0809323A
-_08093238:
-	movs r6, #0x7a
-_0809323A:
-	adds r5, #2
-	adds r4, #1
-	cmp r4, #8
-	bls _08093214
-	pop {r3}
-	mov r8, r3
-	pop {r4, r5, r6, r7, pc}
-
-	thumb_func_start sub_08093248
-sub_08093248: @ 0x08093248
-	push {r4, r5, r6, r7, lr}
-	adds r1, r0, #0
-	adds r1, #0x78
-	ldrh r1, [r1]
-	adds r7, r1, #0
-	subs r7, #0x40
-	adds r0, #0x38
-	ldrb r6, [r0]
-	movs r4, #0
-	movs r5, #0
-_0809325C:
-	adds r0, r7, r5
-	adds r0, r0, r4
-	subs r0, #1
-	adds r1, r6, #0
-	bl sub_0807BA8C
-	cmp r4, #2
-	beq _08093272
-	cmp r4, #5
-	beq _08093276
-	b _08093278
-_08093272:
-	movs r5, #0x3d
-	b _08093278
-_08093276:
-	movs r5, #0x7a
-_08093278:
-	adds r4, #1
-	cmp r4, #8
-	bls _0809325C
-	pop {r4, r5, r6, r7, pc}
-
-	thumb_func_start sub_08093280
-sub_08093280: @ 0x08093280
-	push {r4, lr}
-	adds r4, r0, #0
-	bl sub_0800445C
-	adds r0, r4, #0
-	bl LinearMoveUpdate
-	ldrb r0, [r4, #0xe]
-	subs r0, #1
-	strb r0, [r4, #0xe]
-	lsls r0, r0, #0x18
-	cmp r0, #0
-	bne _080932A0
-	adds r0, r4, #0
-	bl sub_08093334
-_080932A0:
-	adds r0, r4, #0
-	bl sub_08093364
-	pop {r4, pc}
-
-	thumb_func_start sub_080932A8
-sub_080932A8: @ 0x080932A8
-	push {lr}
-	adds r1, r0, #0
-	adds r2, r1, #0
-	adds r2, #0x7a
-	ldrb r0, [r2]
-	subs r0, #1
-	strb r0, [r2]
-	movs r2, #3
-	ands r2, r0
-	cmp r2, #1
-	beq _080932C8
-	cmp r2, #3
-	beq _080932D0
-	adds r1, #0x62
-	movs r0, #0
-	b _080932D4
-_080932C8:
-	adds r0, r1, #0
-	adds r0, #0x62
-	strb r2, [r0]
-	b _080932D6
-_080932D0:
-	adds r1, #0x62
-	movs r0, #0xff
-_080932D4:
-	strb r0, [r1]
-_080932D6:
-	pop {pc}
-
-	thumb_func_start sub_080932D8
-sub_080932D8: @ 0x080932D8
-	push {r4, lr}
-	lsls r0, r0, #3
-	ldr r1, _080932F0 @ =gUnk_08122898
-	adds r4, r0, r1
-	ldr r0, [r4]
-	ldrh r1, [r4, #4]
-	bl CheckLocalFlagByBank
-	cmp r0, #0
-	beq _080932F4
-	movs r0, #1
-	b _08093306
-	.align 2, 0
-_080932F0: .4byte gUnk_08122898
-_080932F4:
-	ldr r0, [r4]
-	ldrh r1, [r4, #6]
-	bl CheckLocalFlagByBank
-	cmp r0, #0
-	bne _08093304
-	movs r0, #0
-	b _08093306
-_08093304:
-	movs r0, #2
-_08093306:
-	pop {r4, pc}
-
-	thumb_func_start sub_08093308
-sub_08093308: @ 0x08093308
-	push {lr}
-	adds r2, r1, #0
-	lsls r0, r0, #3
-	ldr r1, _08093320 @ =gUnk_08122898
-	adds r1, r0, r1
-	cmp r2, #1
-	bne _08093324
-	ldr r0, [r1]
-	ldrh r1, [r1, #4]
-	bl SetLocalFlagByBank
-	b _08093330
-	.align 2, 0
-_08093320: .4byte gUnk_08122898
-_08093324:
-	cmp r2, #2
-	bne _08093330
-	ldr r0, [r1]
-	ldrh r1, [r1, #6]
-	bl SetLocalFlagByBank
-_08093330:
-	pop {pc}
-	.align 2, 0
-
-	thumb_func_start sub_08093334
-sub_08093334: @ 0x08093334
-	push {r4, r5, lr}
-	adds r4, r0, #0
-	movs r0, #4
-	strb r0, [r4, #0xc]
-	ldrb r1, [r4, #0x15]
-	movs r0, #0x10
-	ands r0, r1
-	movs r5, #2
-	cmp r0, #0
-	beq _0809334A
-	movs r5, #1
-_0809334A:
-	adds r1, r5, #1
-	adds r0, r4, #0
-	bl sub_080931A4
-	ldrb r0, [r4, #0xa]
-	adds r1, r5, #0
-	bl sub_08093308
-	movs r0, #0x72
-	bl EnqueueSFX
-	pop {r4, r5, pc}
-	.align 2, 0
-
-	thumb_func_start sub_08093364
-sub_08093364: @ 0x08093364
-	push {r4, r5, lr}
-	adds r5, r0, #0
-	ldrb r1, [r5, #0xe]
-	movs r0, #3
-	ands r0, r1
-	cmp r0, #0
-	bne _080933BC
-	movs r0, #0xf
-	movs r1, #0x11
-	movs r2, #0
-	bl CreateObject
-	adds r4, r0, #0
-	cmp r4, #0
-	beq _080933BC
-	str r5, [r4, #0x50]
-	adds r0, r5, #0
-	adds r1, r4, #0
-	bl CopyPosition
-	ldrb r1, [r5, #0x15]
-	movs r0, #0x10
-	ands r0, r1
-	cmp r0, #0
-	beq _0809339C
-	ldrh r0, [r4, #0x2e]
-	adds r0, #0x12
-	b _080933A0
-_0809339C:
-	ldrh r0, [r4, #0x2e]
-	subs r0, #0x12
-_080933A0:
-	strh r0, [r4, #0x2e]
-	movs r0, #0x32
-	ldrsh r2, [r4, r0]
-	ldrb r1, [r5, #0xe]
-	movs r0, #8
-	ands r0, r1
-	cmp r0, #0
-	beq _080933B6
-	adds r0, r2, #0
-	adds r0, #8
-	b _080933BA
-_080933B6:
-	adds r0, r2, #0
-	subs r0, #8
-_080933BA:
-	strh r0, [r4, #0x32]
-_080933BC:
-	pop {r4, r5, pc}
-	.align 2, 0
diff --git a/assets/assets.json b/assets/assets.json
index b4fea800..cb8e9a93 100644
--- a/assets/assets.json
+++ b/assets/assets.json
@@ -43906,31 +43906,6 @@
     "size": 27,
     "type": "animation"
   },
-  {
-    "path": "objectBlockingStairs/gUnk_08122850.bin",
-    "start": 1189968,
-    "size": 18
-  },
-  {
-    "path": "objectBlockingStairs/gUnk_08122862.bin",
-    "start": 1189986,
-    "size": 18
-  },
-  {
-    "path": "objectBlockingStairs/gUnk_08122874.bin",
-    "start": 1190004,
-    "size": 18
-  },
-  {
-    "path": "objectBlockingStairs/gUnk_08122886.bin",
-    "start": 1190022,
-    "size": 18
-  },
-  {
-    "path": "objectBlockingStairs/gUnk_08122898.bin",
-    "start": 1190040,
-    "size": 16
-  },
   {
     "path": "swordsmanNewsletter/gUnk_081228A8.bin",
     "start": 1190056,
diff --git a/data/const/object/objectBlockingStairs.s b/data/const/object/objectBlockingStairs.s
deleted file mode 100644
index a68959bf..00000000
--- a/data/const/object/objectBlockingStairs.s
+++ /dev/null
@@ -1,27 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-    .align 2
-
-gUnk_0812283C:: @ 0812283C
-	.4byte sub_08092EEC
-	.4byte sub_08092F68
-	.4byte sub_080930F4
-	.4byte sub_08093178
-	.4byte nullsub_120
-
-gUnk_08122850:: @ 08122850
-	.incbin "objectBlockingStairs/gUnk_08122850.bin"
-
-gUnk_08122862:: @ 08122862
-	.incbin "objectBlockingStairs/gUnk_08122862.bin"
-
-gUnk_08122874:: @ 08122874
-	.incbin "objectBlockingStairs/gUnk_08122874.bin"
-
-gUnk_08122886:: @ 08122886
-	.incbin "objectBlockingStairs/gUnk_08122886.bin"
-
-gUnk_08122898:: @ 08122898
-	.incbin "objectBlockingStairs/gUnk_08122898.bin"
diff --git a/linker.ld b/linker.ld
index e24e01ae..88e6fae6 100644
--- a/linker.ld
+++ b/linker.ld
@@ -721,7 +721,7 @@ SECTIONS {
         src/object/mask.o(.text);
         src/object/houseDoorInterior.o(.text);
         src/object/whirlwind.o(.text);
-        asm/object/objectBlockingStairs.o(.text);
+        src/object/objectBlockingStairs.o(.text);
         src/object/swordsmanNewsletter.o(.text);
         src/object/object61.o(.text);
         src/object/giantTwig.o(.text);
@@ -1461,7 +1461,7 @@ SECTIONS {
         src/object/houseDoorInterior.o(.rodata);
         src/object/whirlwind.o(.rodata);
         data/animations/object/whirlwind.o(.rodata);
-        data/const/object/objectBlockingStairs.o(.rodata);
+        src/object/objectBlockingStairs.o(.rodata);
         data/const/object/swordsmanNewsletter.o(.rodata);
         src/object/object61.o(.rodata);
         src/object/giantTwig.o(.rodata);
diff --git a/src/object/objectBlockingStairs.c b/src/object/objectBlockingStairs.c
new file mode 100644
index 00000000..f9aa6a1b
--- /dev/null
+++ b/src/object/objectBlockingStairs.c
@@ -0,0 +1,350 @@
+#define NENT_DEPRECATED
+#include "entity.h"
+#include "flags.h"
+#include "sound.h"
+#include "functions.h"
+#include "asm.h"
+#include "object.h"
+#include "effects.h"
+
+typedef struct {
+    Entity base;
+    u8 filler[0x10];
+    u16 tilePos;
+    u8 unk7a;
+    u8 unk7b;
+    u8 filler2[0xA];
+    u16 objFlags;
+} ObjectBlockingStairsEntity;
+
+extern const Hitbox gUnk_080FD288;
+
+void ObjectBlockingStairs_Init(ObjectBlockingStairsEntity*);
+void ObjectBlockingStairs_Action1(ObjectBlockingStairsEntity*);
+void ObjectBlockingStairs_Action2(ObjectBlockingStairsEntity*);
+void ObjectBlockingStairs_Action3(ObjectBlockingStairsEntity*);
+void sub_080932A8(ObjectBlockingStairsEntity*);
+void sub_08093248(ObjectBlockingStairsEntity*);
+void sub_08093280(ObjectBlockingStairsEntity*);
+void sub_08093334(ObjectBlockingStairsEntity*);
+void sub_08093364(ObjectBlockingStairsEntity*);
+void ObjectBlockingStairs_Action4(ObjectBlockingStairsEntity*);
+u32 sub_080932D8(u32);
+void sub_080931A4(ObjectBlockingStairsEntity*, u32);
+
+void ObjectBlockingStairs(Entity* this) {
+    static void (*const actionFuncs[])(ObjectBlockingStairsEntity*) = {
+        ObjectBlockingStairs_Init,    ObjectBlockingStairs_Action1, ObjectBlockingStairs_Action2,
+        ObjectBlockingStairs_Action3, ObjectBlockingStairs_Action4,
+    };
+
+    actionFuncs[this->action]((ObjectBlockingStairsEntity*)this);
+}
+
+void ObjectBlockingStairs_Init(ObjectBlockingStairsEntity* this) {
+    int iVar1;
+    u32 uVar2;
+
+    switch (sub_080932D8(super->type)) {
+        case 1:
+            super->action = 4;
+            super->x.HALF.HI -= 0x20;
+            uVar2 = 2;
+            break;
+        case 2:
+            super->action = 4;
+            super->x.HALF.HI += 0x20;
+            uVar2 = 3;
+            break;
+        default:
+            super->action = 1;
+            super->speed = 0x80;
+            super->field_0x16 = 1;
+            super->actionDelay = 0;
+            super->field_0xf = 0;
+            this->unk7a = 0x20;
+            this->unk7b = 0x80;
+            if (super->type == 0) {
+                super->hitbox = (Hitbox*)&gUnk_080FD288;
+            }
+            uVar2 = 0;
+            if ((this->objFlags) && !CheckFlags(this->objFlags)) {
+                uVar2 = 1;
+            }
+            break;
+    }
+
+    sub_080931A4(this, uVar2);
+}
+
+void ObjectBlockingStairs_Action1(ObjectBlockingStairsEntity* this) {
+    u32 tileType;
+    int xDist;
+    Entity* ent;
+
+    xDist = (int)gPlayerEntity.x.HALF.HI - super->x.HALF.HI;
+
+    if (this->objFlags) {
+        if (!CheckFlags(this->objFlags)) {
+            return;
+        }
+        if (this->unk7a != 0) {
+            sub_080932A8(this);
+            return;
+        }
+    }
+
+    if ((this->unk7b & 0x3f) == 0) {
+        this->unk7b |= 0xf;
+        sub_080931A4(this, 0);
+        if (xDist < 0) {
+            this->unk7b |= 0x40;
+        }
+    }
+
+    if (this->unk7b & 0x40) {
+        tileType = (u32)GetTileType(this->tilePos - 1, super->collisionLayer);
+    } else {
+        tileType = (u32)GetTileType(this->tilePos + 1, super->collisionLayer);
+    }
+
+    switch (tileType) {
+        case 0x4030:
+        case 0x4031:
+            super->action = 3;
+            super->direction = Direction8FromAnimationState(gPlayerEntity.animationState);
+            super->speed = 0x80;
+            super->actionDelay = 0x40;
+            RequestPriorityDuration(super, 0x50);
+            EnqueueSFX(SFX_10F);
+            sub_08093248(this);
+            return;
+    }
+
+    if ((gPlayerEntity.animationState & 2) == 0) {
+        return;
+    }
+    RegisterCarryEntity(super);
+
+    if (this->unk7b & 0x80) {
+        this->unk7b &= ~0x80;
+        if ((this->unk7b & 0x40) != 0) {
+            SetTile(0x402c, this->tilePos - 1, super->collisionLayer);
+            SetTile(0x403d, this->tilePos + 1, super->collisionLayer);
+        } else {
+            SetTile(0x403d, this->tilePos - 1, super->collisionLayer);
+            SetTile(0x402d, this->tilePos + 1, super->collisionLayer);
+        }
+    } else if (this->unk7b & 0x40) {
+        if (xDist >= 5) {
+            this->unk7b &= ~(0x40 | 0x80);
+            SetTile(0x403d, this->tilePos - 1, super->collisionLayer);
+            SetTile(0x402d, this->tilePos + 1, super->collisionLayer);
+        }
+    } else {
+        if (-xDist > 4) {
+            this->unk7b |= 0x40;
+            SetTile(0x402c, this->tilePos - 1, super->collisionLayer);
+            SetTile(0x403d, this->tilePos + 1, super->collisionLayer);
+        }
+    }
+}
+
+void ObjectBlockingStairs_Action2(ObjectBlockingStairsEntity* this) {
+    if (super->actionDelay) {
+        sub_08093280(this);
+    } else {
+        if (gPlayerState.heldObject == 0x12) {
+            if ((gPlayerEntity.frame & 2) != 0 && ++super->field_0xf > 8) {
+                gPlayerState.queued_action = 16;
+                gPlayerState.field_0x38 = 0x40;
+                gPlayerState.flags |= PL_BUSY;
+                gPlayerEntity.x.HALF.LO = 0;
+                gPlayerEntity.y.HALF.LO = 0;
+                super->direction = (gPlayerEntity.animationState ^ 4) << 2;
+                super->actionDelay = 0x40;
+                EnqueueSFX(SFX_10F);
+                sub_08093248(this);
+            }
+        } else if (super->subAction == 6) {
+            super->action = 1;
+            super->field_0xf = 0;
+        }
+    }
+}
+
+void ObjectBlockingStairs_Action3(ObjectBlockingStairsEntity* this) {
+    sub_0800445C(super);
+    LinearMoveUpdate(super);
+    if (--super->actionDelay == 0) {
+        sub_08093334(this);
+    }
+    sub_08093364(this);
+}
+
+void ObjectBlockingStairs_Action4(ObjectBlockingStairsEntity* this) {
+}
+
+void sub_080931A4(ObjectBlockingStairsEntity* this, u32 param_2) {
+    static const u16 gUnk_08122850[] = { 0x4027, 0x4023, 0x4028, 0x402c, 0x402b, 0x402d, 0x4029, 0x4026, 0x402a };
+    static const u16 gUnk_08122862[] = { 0x4027, 0x4023, 0x4028, 0x4024, 0x4022, 0x4025, 0x4029, 0x4026, 0x402a };
+    static const u16 gUnk_08122874[] = { 0x4027, 0x4023, 0x4023, 0x4024, 0x4022, 0x4022, 0x4029, 0x4026, 0x4026 };
+    static const u16 gUnk_08122886[] = { 0x4023, 0x4023, 0x4028, 0x4022, 0x4022, 0x4025, 0x4026, 0x4026, 0x402a };
+
+    u32 collisionLayer;
+    const u16* pTileTypes;
+    u32 index;
+    u32 tilePos;
+    int iVar5;
+
+    this->tilePos = COORD_TO_TILE(super);
+    tilePos = this->tilePos - 0x40;
+    collisionLayer = super->collisionLayer;
+
+    switch (param_2) {
+        case 1:
+            pTileTypes = gUnk_08122862;
+            break;
+        case 2:
+            pTileTypes = gUnk_08122874;
+            break;
+        case 3:
+            pTileTypes = gUnk_08122886;
+            break;
+        default:
+        case 0:
+            pTileTypes = gUnk_08122850;
+            break;
+    }
+
+    for (index = 0, iVar5 = 0; index < 9; index++) {
+        u32 pos = tilePos + iVar5 + index - 1;
+        SetTile(pTileTypes[index], pos, collisionLayer);
+        switch (index) {
+            case 2:
+                iVar5 = 0x3d;
+                break;
+            case 5:
+                iVar5 = 0x7a;
+                break;
+        }
+    }
+}
+
+void sub_08093248(ObjectBlockingStairsEntity* this) {
+    u32 collisionLayer;
+    u32 tilePos;
+    u32 index;
+    int iVar4;
+
+    tilePos = this->tilePos - 0x40;
+    collisionLayer = super->collisionLayer;
+    for (index = 0, iVar4 = 0; index < 9; index++) {
+        sub_0807BA8C(tilePos + iVar4 + index - 1, collisionLayer);
+        switch (index) {
+            case 2:
+                iVar4 = 0x3d;
+                break;
+            case 5:
+                iVar4 = 0x7a;
+                break;
+        }
+    }
+}
+
+void sub_08093280(ObjectBlockingStairsEntity* this) {
+    sub_0800445C(super);
+    LinearMoveUpdate(super);
+    if (--super->actionDelay == 0) {
+        sub_08093334(this);
+    }
+    sub_08093364(this);
+}
+
+void sub_080932A8(ObjectBlockingStairsEntity* this) {
+    this->unk7a--;
+    switch (this->unk7a & 3) {
+        case 1:
+            super->spriteOffsetX = 1;
+            break;
+        case 3:
+            super->spriteOffsetX = -1;
+            break;
+        default:
+            super->spriteOffsetX = 0;
+            break;
+    }
+}
+
+typedef struct {
+    u32 flagBank;
+    u16 unk4;
+    u16 unk6;
+} struct_gUnk_08122898;
+
+const struct_gUnk_08122898 gUnk_08122898[] = {
+    { 0x200, 0xa1, 0xa2 },
+    { 0x8c0, 0x6f, 0x70 },
+};
+
+u32 sub_080932D8(u32 param_1) {
+    const struct_gUnk_08122898* ptr = gUnk_08122898 + param_1;
+
+    if (CheckLocalFlagByBank(ptr->flagBank, ptr->unk4)) {
+        return 1;
+    } else {
+        if (CheckLocalFlagByBank(ptr->flagBank, ptr->unk6)) {
+            return 2;
+        } else {
+            return 0;
+        }
+    }
+}
+
+void sub_08093308(u32 param_1, u32 param_2) {
+    const struct_gUnk_08122898* ptr = gUnk_08122898 + param_1;
+    if (param_2 == 1) {
+        SetLocalFlagByBank(ptr->flagBank, ptr->unk4);
+    } else if (param_2 == 2) {
+        SetLocalFlagByBank(ptr->flagBank, ptr->unk6);
+    }
+}
+
+void sub_08093334(ObjectBlockingStairsEntity* this) {
+    u32 uVar1;
+
+    super->action = 4;
+    if (super->direction & 0x10) {
+        uVar1 = 1;
+    } else {
+        uVar1 = 2;
+    }
+    sub_080931A4(this, uVar1 + 1);
+    sub_08093308(super->type, uVar1);
+    EnqueueSFX(SFX_SECRET);
+}
+
+void sub_08093364(ObjectBlockingStairsEntity* this) {
+    s32 sVar1;
+    Entity* dashEffectEnt;
+
+    if ((super->actionDelay & 3) == 0) {
+        dashEffectEnt = CreateObject(SPECIAL_FX, FX_DASH, 0);
+        if (dashEffectEnt != NULL) {
+            dashEffectEnt->parent = super;
+            CopyPosition(super, dashEffectEnt);
+            if (super->direction & 0x10) {
+                dashEffectEnt->x.HALF.HI += 0x12;
+            } else {
+                dashEffectEnt->x.HALF.HI -= 0x12;
+            }
+
+            sVar1 = dashEffectEnt->y.HALF.HI;
+            if (super->actionDelay & 8) {
+                dashEffectEnt->y.HALF.HI = sVar1 + 8;
+            } else {
+                dashEffectEnt->y.HALF.HI = sVar1 - 8;
+            }
+        }
+    }
+}