1 files changed, 677 insertions, 0 deletions

diff --git a/asm/src/code_08003FC4.s b/asm/src/code_08003FC4.s
new file mode 100644
index 00000000..718c0306
--- /dev/null
+++ b/asm/src/code_08003FC4.s
@@ -0,0 +1,677 @@
+	.include "asm/macros.inc"
+	.include "constants/constants.inc"
+
+	.syntax unified
+
+	.text
+
+	thumb_func_start GravityUpdate
+GravityUpdate: @ 0x08003FC4
+	@ r0 = Entity*
+	@ r1 = Gravity strength
+	@ returns z pos
+
+	adds r3, r0, #0
+	ldr r0, [r3, #0x34]
+	ldr r2, [r3, #0x20]
+	subs r0, r0, r2
+	bpl _08003FD6
+	subs r2, r2, r1
+	str r0, [r3, #0x34]
+	str r2, [r3, #0x20]
+	bx lr
+_08003FD6:
+	movs r0, #0
+	str r0, [r3, #0x34]
+	str r0, [r3, #0x20]
+	bx lr
+
+	non_word_aligned_thumb_func_start sub_08003FDE
+sub_08003FDE: @ 0x08003FDE
+	push {r0, lr}
+	bl sub_08003FF2
+	cmp r0, #0
+	pop {r2}
+	beq _08003FF0
+	adds r0, r2, #0
+	bl sub_0806F58C
+_08003FF0:
+	pop {pc}
+
+	non_word_aligned_thumb_func_start sub_08003FF2
+sub_08003FF2: @ 0x08003FF2
+	push {r4, r5, r6, r7, lr}
+	ldr r4, [r1, #0x48]
+	ldrb r5, [r4, #6]
+	ldrb r6, [r4, #7]
+	adds r2, r2, r5
+	adds r3, r3, r6
+	ldrh r5, [r1, #0x2e]
+	movs r7, #0
+	ldrsb r7, [r4, r7]
+	ldrb r6, [r1, #0x18]
+	lsrs r6, r6, #3
+	blo _0800400C
+	rsbs r7, r7, #0
+_0800400C:
+	adds r5, r5, r7
+	ldrh r6, [r1, #0x32]
+	movs r7, #1
+	ldrsb r7, [r4, r7]
+	adds r6, r6, r7
+	movs r4, #0x38
+	ldrb r7, [r0, r4]
+	ldrb r4, [r1, r4]
+	ands r7, r4
+	movs r4, #3
+	cmp r7, r4
+	beq _08004048
+	cmp r2, #0
+	beq _08004034
+	ldrh r4, [r0, #0x2e]
+	subs r4, r4, r5
+	adds r4, r4, r2
+	lsls r2, r2, #1
+	cmp r2, r4
+	blo _08004048
+_08004034:
+	cmp r3, #0
+	beq _08004044
+	ldrh r4, [r0, #0x32]
+	subs r4, r4, r6
+	adds r4, r4, r3
+	lsls r3, r3, #1
+	cmp r3, r4
+	blo _08004048
+_08004044:
+	movs r0, #1
+	pop {r4, r5, r6, r7, pc}
+_08004048:
+	movs r0, #0
+	pop {r4, r5, r6, r7, pc}
+
+	thumb_func_start DrawEntity
+DrawEntity: @ 0x0800404C
+	push {r4, r5, lr}
+	adds r4, r0, #0
+	ldrb r1, [r0, #0x18]
+	movs r2, #3
+	ands r1, r2
+	beq _0800409A
+	cmp r1, #3
+	beq _08004064
+	bl sub_080040A2
+	cmp r0, #0
+	beq _0800409A
+_08004064:
+	ldrb r1, [r4, #0x19]
+	movs r2, #0xc0
+	ands r1, r2
+	lsrs r1, r1, #4
+	ldr r2, _08004358 @ =gUnk_081326EC
+	ldr r1, [r2, r1]
+	ldrb r2, [r1]
+	cmp r2, #0x40
+	bhs _0800407E
+	adds r2, #1
+	strb r2, [r1]
+	lsls r2, r2, #2
+	str r4, [r1, r2]
+_0800407E:
+	movs r2, #0
+	ldr r1, _0800435C @ =gUnk_02024048
+	ldrb r5, [r1]
+	strb r2, [r1]
+	cmp r5, #0
+	beq _080040A0
+	ldr r4, _08004360 @ =gUnk_02021F20
+_0800408C:
+	ldrh r0, [r4]
+	bl SoundReq
+	adds r4, #2
+	subs r5, #1
+	bne _0800408C
+	pop {r4, r5, pc}
+_0800409A:
+	ldr r1, _08004364 @ =gUnk_02024048
+	movs r2, #0
+	strb r2, [r1]
+_080040A0:
+	pop {r4, r5, pc}
+
+	non_word_aligned_thumb_func_start sub_080040A2
+sub_080040A2: @ 0x080040A2
+	ldrb r1, [r0, #0x18]
+	lsrs r1, r1, #2
+	bhs _080040D0
+
+	thumb_func_start CheckOnScreen
+CheckOnScreen: @ 0x080040A8
+	ldr r1, _08004368 @ =gRoomControls
+	movs r2, #0x2e
+	ldrsh r2, [r0, r2]
+	ldrh r3, [r1, #0xa]
+	subs r2, r2, r3
+	adds r2, #0x3f
+	ldr r3, _0800436C @ =0x0000016E
+	cmp r2, r3
+	bhs _080040D4
+	movs r2, #0x32
+	ldrsh r2, [r0, r2]
+	ldrh r3, [r1, #0xc]
+	subs r2, r2, r3
+	movs r3, #0x36
+	ldrsh r3, [r0, r3]
+	adds r2, r2, r3
+	adds r2, #0x3f
+	ldr r3, _08004370 @ =0x0000011E
+	cmp r2, r3
+	bhs _080040D4
+_080040D0:
+	movs r0, #1
+	bx lr
+_080040D4:
+	movs r0, #0
+	bx lr
+
+	thumb_func_start sub_080040D8
+sub_080040D8: @ 0x080040D8
+	push {lr}
+	bl _080040F2
+	adds r0, r2, #0
+	pop {pc}
+
+	non_word_aligned_thumb_func_start sub_080040E2
+sub_080040E2: @ 0x080040E2
+	push {lr}
+	bl sub_080040EC
+	adds r0, r2, #0
+	pop {pc}
+
+	thumb_func_start sub_080040EC
+sub_080040EC: @ 0x080040EC
+	ldrh r2, [r0, #0x2e]
+	ldrh r3, [r0, #0x32]
+	b _080040F2
+_080040F2:
+	push {r2, r3, r4, lr}
+	ldr r4, _08004374 @ =gRoomControls + 6
+	ldrh r4, [r4]
+	subs r2, r2, r4
+	ldr r4, _08004378 @ =gRoomControls + 8
+	ldrh r4, [r4]
+	subs r3, r3, r4
+	ldr r4, _0800437C @ =0x000003F0
+	ands r2, r4
+	ands r3, r4
+	lsrs r2, r2, #4
+	lsls r3, r3, #2
+	adds r2, r2, r3
+	movs r3, #0x38
+	ldrb r3, [r0, r3]
+	lsls r3, r3, #2
+	ldr r4, _08004380 @ =gUnk_08000248
+	ldr r3, [r4, r3]
+	ldrb r4, [r3, r2]
+	pop {r2, r3}
+	cmp r4, #0x10
+	bhs _0800412C
+	lsrs r3, r3, #4
+	bhs _08004124
+	lsrs r4, r4, #2
+_08004124:
+	lsrs r2, r2, #4
+	bhs _08004162
+	lsrs r4, r4, #1
+	b _08004162
+_0800412C:
+	cmp r4, #0xff
+	beq _08004162
+	subs r4, #0x10
+	lsls r4, r4, #1
+	ldrh r4, [r1, r4]
+	movs r1, #0xf
+	ands r1, r2
+	cmp r1, #4
+	blo _0800414C
+	lsrs r4, r4, #1
+	cmp r1, #8
+	blo _0800414C
+	lsrs r4, r4, #1
+	cmp r1, #0xc
+	blo _0800414C
+	lsrs r4, r4, #1
+_0800414C:
+	movs r1, #0xf
+	ands r1, r3
+	cmp r1, #4
+	blo _08004162
+	lsrs r4, r4, #4
+	cmp r1, #8
+	blo _08004162
+	lsrs r4, r4, #4
+	cmp r1, #0xc
+	blo _08004162
+	lsrs r4, r4, #4
+_08004162:
+	movs r2, #1
+	ands r2, r4
+	pop {r4, pc}
+
+	thumb_func_start sub_08004168
+sub_08004168: @ 0x08004168
+	ldr r3, _08004384 @ =0x000FFFFF
+	ldr r1, _08004388 @ =0x00080000
+	ldr r2, [r0, #0x2c]
+	bics r2, r3
+	adds r2, r2, r1
+	str r2, [r0, #0x2c]
+	ldr r2, [r0, #0x30]
+	bics r2, r3
+	adds r2, r2, r1
+	str r2, [r0, #0x30]
+	bx lr
+
+	non_word_aligned_thumb_func_start sub_0800417E
+sub_0800417E: @ 0x0800417E
+	ldrb r2, [r0, #0x15]
+	ldr r3, _0800438C @ =0x0000EE00
+	tst r1, r3
+	beq _0800418A
+	movs r3, #0x20
+	subs r2, r3, r2
+_0800418A:
+	movs r3, #0xee
+	tst r1, r3
+	beq _08004194
+	movs r3, #0x10
+	subs r2, r3, r2
+_08004194:
+	movs r3, #0x1f
+	ands r2, r3
+	strb r2, [r0, #0x15]
+	bx lr
+
+	thumb_func_start sub_0800419C
+sub_0800419C: @ 0x0800419C
+	push {r5, r6, lr}
+	b _080041B0
+
+	thumb_func_start EntityInRectRadius
+EntityInRectRadius: @ 0x080041A0
+	push {r5, r6, lr}
+	movs r6, #0x38
+	ldrb r5, [r0, r6]
+	ldrb r6, [r1, r6]
+	ands r5, r6
+	movs r6, #3
+	tst r5, r6
+	beq _080041D8
+_080041B0:
+	cmp r2, #0
+	beq _080041C2
+	ldrh r5, [r0, #0x2e]
+	ldrh r6, [r1, #0x2e]
+	subs r5, r5, r6
+	adds r5, r5, r2
+	lsls r2, r2, #1
+	cmp r2, r5
+	blo _080041D8
+_080041C2:
+	cmp r3, #0
+	beq _080041D4
+	ldrh r5, [r0, #0x32]
+	ldrh r6, [r1, #0x32]
+	subs r5, r5, r6
+	adds r5, r5, r3
+	lsls r3, r3, #1
+	cmp r3, r5
+	blo _080041D8
+_080041D4:
+	movs r0, #1
+	pop {r5, r6, pc}
+_080041D8:
+	movs r0, #0
+	pop {r5, r6, pc}
+
+	thumb_func_start sub_080041DC
+sub_080041DC: @ 0x080041DC
+	push {r1, r2}
+	movs r2, #0x32
+	ldrsh r1, [r0, r2]
+	movs r3, #0x2e
+	ldrsh r0, [r0, r3]
+	pop {r2, r3}
+
+	thumb_func_start sub_080041E8
+sub_080041E8: @ 0x080041E8
+	subs r0, r0, r2
+	subs r1, r1, r3
+
+	thumb_func_start sub_080041EC
+sub_080041EC: @ 0x080041EC
+	adds r2, r0, #0
+	muls r0, r2, r0
+	adds r3, r1, #0
+	muls r1, r3, r1
+	push {lr}
+	adds r0, r0, r1
+	lsls r0, r0, #8
+	bl Sqrt
+	pop {r3}
+	bx r3
+
+	non_word_aligned_thumb_func_start sub_08004202
+sub_08004202: @ 0x08004202
+	push {r1, lr}
+	ldrb r1, [r0, #0x14]
+	bl sub_08004212
+	pop {r0}
+	str r1, [r0]
+	adds r0, r2, #0
+	pop {pc}
+
+	non_word_aligned_thumb_func_start sub_08004212
+sub_08004212: @ 0x08004212
+	push {r4}
+	adds r4, r1, #0
+	movs r3, #3
+	tst r4, r3
+	beq _08004226
+	movs r3, #2
+	lsrs r4, r4, #3
+	blo _08004224
+	rsbs r3, r3, #0
+_08004224:
+	adds r2, r2, r3
+_08004226:
+	adds r4, r1, #0
+	movs r3, #3
+	ands r4, r3
+	cmp r4, #2
+	beq _0800423C
+	movs r3, #0x80
+	adds r1, #1
+	lsrs r1, r1, #3
+	bhs _0800423A
+	rsbs r3, r3, #0
+_0800423A:
+	adds r2, r2, r3
+_0800423C:
+	ldr r3, _08004390 @ =0x00001FFF
+	ands r2, r3
+	movs r4, #0x38
+	ldrb r4, [r0, r4]
+	lsls r4, r4, #3
+	ldr r3, _08004394 @ =gUnk_08000228
+	adds r3, r3, r4
+	ldr r4, [r3]
+	ldrh r1, [r4, r2]
+	ldr r4, _08004398 @ =0x00004000
+	tst r1, r4
+	bne _0800425C
+	lsls r1, r1, #0x11
+	lsrs r1, r1, #0x10
+	ldr r4, [r3, #4]
+	ldrh r1, [r4, r1]
+_0800425C:
+	pop {r4}
+	bx lr
+
+	thumb_func_start InitializeAnimation	@ r0 = Entity*, r1 = Frame*
+InitializeAnimation: @ 0x08004260
+	movs r2, #0x58			@ anim idx
+	strb r1, [r0, r2]
+
+	ldrh r3, [r0, #0x12]	@ Sprite idx
+	lsls r3, r3, #4			@ *= 16
+
+	ldr r2, _0800439C @ =gSpritePtrs
+
+	ldr r2, [r2, r3]		@ Load AnimData
+	lsls r1, r1, #2			@ *= 4
+
+	ldr r1, [r2, r1]		@ AnimData->???
+	str r1, [r0, #0x5c]
+	b FrameZero
+
+	thumb_func_start GetNextFrame
+GetNextFrame: @ 0x08004274
+	movs r1, #1
+
+	non_word_aligned_thumb_func_start UpdateAnimationVariableFrames
+UpdateAnimationVariableFrames: @ 0x08004276
+	movs r3, #0x59
+	ldrb r2, [r0, r3]	@ Decrease frame timer
+	subs r2, r2, r1
+
+	beq FrameZero		@ Frame timer is 0
+	ble FrameNeg		@ Frame timer is below 0
+
+	strb r2, [r0, r3]
+
+	bx lr
+
+FrameNeg:
+	ldr r1, [r0, #0x5c]	@ Load frame data
+
+_08004286:
+	ldrb r3, [r1, #1]
+	adds r2, r2, r3
+
+	bgt _0800429C		@ Frame idx greater (?)
+
+	ldrb r3, [r1, #3]
+	adds r1, #4
+	lsrs r3, r3, #8		@ Branch if != 0xFF
+
+	blo _08004286
+
+	ldrb r3, [r1]
+	lsls r3, r3, #2
+	subs r1, r1, r3
+	b _08004286
+
+_0800429C:
+	str r1, [r0, #0x5c]
+
+	push {r2, lr}
+	bl FrameZero
+	pop {r2, r3}
+
+	movs r1, #0x59
+	strb r2, [r0, r1]
+	bx r3
+
+	thumb_func_start InitAnimationForceUpdate
+InitAnimationForceUpdate: @ 0x080042AC
+	push {lr}
+	bl InitializeAnimation
+	movs r2, #0xff
+	strb r2, [r0, #0x1f]
+	b _080042C0
+
+	thumb_func_start UpdateAnimationSingleFrame
+UpdateAnimationSingleFrame: @ 0x080042B8
+	movs r1, #1
+
+	non_word_aligned_thumb_func_start sub_080042BA
+sub_080042BA: @ 0x080042BA
+	push {lr}
+	bl UpdateAnimationVariableFrames
+
+_080042C0:
+	pop {r1}
+	mov lr, r1
+
+	ldrb r1, [r0, #0x1e]
+	ldrb r3, [r0, #0x1f]
+	strb r1, [r0, #0x1f]
+
+	cmp r1, r3
+	beq _08004328
+
+	ldrh r2, [r0, #0x12]
+
+	thumb_func_start sub_080042D0
+sub_080042D0: @ 0x080042D0
+	cmp r1, #0xff
+	beq _08004328
+
+	lsls r2, r2, #4
+	lsls r3, r1, #2
+	ldr r1, _080043A0 @ =gSpritePtrs
+	adds r1, r1, r2
+	ldr r2, [r1, #4]
+
+	cmp r2, #0
+	beq _08004328
+
+	ldr r1, [r1, #8]
+	adds r2, r2, r3
+	ldrb r3, [r2]
+	cmp r3, #0
+	beq _08004328
+	push {r4, r5}
+	movs r3, #0x26
+	ldrb r3, [r0, r3]
+	movs r4, #0xc
+	muls r3, r4, r3
+	ldr r4, _080043A4 @ =gUnk_02024494
+	adds r4, r4, r3
+	ldrb r3, [r4]
+	movs r5, #0xf
+	ands r3, r5
+	cmp r3, #5
+	blo _08004326
+	ldrb r5, [r4, #6]
+	ldrb r3, [r2]
+	strb r3, [r4, #6]
+	subs r5, r5, r3
+	ldrh r3, [r2, #2]
+	lsls r3, r3, #5
+	adds r1, r1, r3
+	ldr r2, [r4, #8]
+	str r1, [r4, #8]
+	subs r2, r2, r1
+	orrs r5, r2
+	beq _08004326
+	movs r2, #0xf0
+	ldrb r1, [r4]
+	bics r1, r2
+	adds r1, #0x30
+	strb r1, [r4]
+_08004326:
+	pop {r4, r5}
+_08004328:
+	bx lr
+
+FrameZero:	@ r0 = Entity*
+	ldrb r3, [r0, #0x1e]	@ Get frame idx
+	strb r3, [r0, #0x1f]	@ Set it to last frame idx
+	
+	ldr r1, [r0, #0x5c]
+	ldrb r3, [r1]			@ Store new frame idx
+	strb r3, [r0, #0x1e]
+
+	ldrb r3, [r1, #1]
+	movs r2, #0x59
+	strb r3, [r0, r2]
+
+	ldrb r3, [r1, #2]
+	movs r2, #0x5b
+	strb r3, [r0, r2]
+
+	ldrb r3, [r1, #3]
+	movs r2, #0x5a
+	strb r3, [r0, r2]
+
+	adds r1, #4
+	lsrs r3, r3, #8
+
+	blo _08004352
+
+	ldrb r3, [r1]
+	lsls r3, r3, #2
+	subs r1, r1, r3
+
+_08004352:
+	str r1, [r0, #0x5c]
+	bx lr
+	.align 2, 0
+
+_08004358: .4byte gUnk_081326EC
+_0800435C: .4byte gUnk_02024048
+_08004360: .4byte gUnk_02021F20
+_08004364: .4byte gUnk_02024048
+_08004368: .4byte gRoomControls
+_0800436C: .4byte 0x0000016E
+_08004370: .4byte 0x0000011E
+_08004374: .4byte gRoomControls + 6
+_08004378: .4byte gRoomControls + 8
+_0800437C: .4byte 0x000003F0
+_08004380: .4byte gUnk_08000248
+_08004384: .4byte 0x000FFFFF
+_08004388: .4byte 0x00080000
+_0800438C: .4byte 0x0000EE00
+_08004390: .4byte 0x00001FFF
+_08004394: .4byte gUnk_08000228
+_08004398: .4byte 0x00004000
+_0800439C: .4byte gSpritePtrs
+_080043A0: .4byte gSpritePtrs
+_080043A4: .4byte gUnk_02024494
+
+	thumb_func_start sub_080043A8
+sub_080043A8: @ 0x080043A8
+	movs r1, #0xb
+	b _080043B6
+
+	thumb_func_start CreateChestSpawner
+CreateChestSpawner: @ 0x080043AC
+	movs r1, #0xc
+	b _080043B6
+
+	thumb_func_start sub_080043B0
+sub_080043B0: @ 0x080043AC
+	movs r1, #0x52
+	b _080043B6
+
+	thumb_func_start CreateItemOnGround
+CreateItemOnGround: @ 0x080043B4
+	movs r1, #0
+
+_080043B6:
+	push {r4, lr}
+	adds r4, r0, #0
+	movs r0, #0xf
+	movs r2, #0
+	bl CreateObject
+
+	cmp r0, #0
+	beq _080043E0		@ Branch if entity could not be created
+
+	movs r1, #0x48
+	ldr r1, [r4, r1]	@ Unused?
+
+	ldrh r3, [r4, #0x2e]
+	strh r3, [r0, #0x2e]
+
+	ldrh r3, [r4, #0x32]
+	strh r3, [r0, #0x32]
+
+	ldrh r3, [r4, #0x36]
+	strh r3, [r0, #0x36]
+
+	ldrb r3, [r4, #8]
+	
+	cmp r3, #3			@ Is the spawner an enemy?
+	bne _080043E0
+	
+	movs r1, #1
+	strb r1, [r0, #0xb]	@ Set base parameter
+
+_080043E0:
+	adds r0, r4, #0
+	bl DeleteEntity
+	
+	pop {r4, pc}