Split camera.s

asm/game__stage__camera__bg__shared_a.s

@@ -0,0 +1,81 @@
+.include "asm/macros.inc"
+.include "constants/constants.inc"
+
+.text
+.syntax unified
+.arm
+
+	thumb_func_start sub_803EA24
+sub_803EA24: @ 0x0803EA24
+	push {r4, r5, r6, lr}
+	ldr r0, _0803EA4C @ =gCurTask
+	ldr r3, [r0]
+	ldrh r1, [r3, #6]
+	movs r0, #0xc0
+	lsls r0, r0, #0x12
+	adds r4, r1, r0
+	adds r0, #0x18
+	adds r5, r1, r0
+	ldr r6, _0803EA50 @ =gCamera
+	ldr r2, [r5, #0x10]
+	movs r0, #0x80
+	lsls r0, r0, #7
+	ands r0, r2
+	cmp r0, #0
+	beq _0803EA54
+	adds r0, r3, #0
+	bl TaskDestroy
+	b _0803EAB2
+	.align 2, 0
+_0803EA4C: .4byte gCurTask
+_0803EA50: .4byte gCamera
+_0803EA54:
+	ldr r0, [r4]
+	ldrh r1, [r6, #0x28]
+	subs r0, r0, r1
+	strh r0, [r5, #0x16]
+	ldr r0, [r4, #4]
+	ldrh r1, [r6, #0x2a]
+	subs r0, r0, r1
+	strh r0, [r5, #0x18]
+	ldr r0, _0803EAB8 @ =0xFFF3FFFF
+	ands r2, r0
+	str r2, [r5, #0x10]
+	adds r0, r5, #0
+	bl UpdateSpriteAnimation
+	ldr r0, [r5, #0x10]
+	movs r1, #0xc0
+	lsls r1, r1, #0xc
+	orrs r0, r1
+	ldr r1, _0803EABC @ =0xFFFFF3FF
+	ands r0, r1
+	str r0, [r5, #0x10]
+	adds r0, r5, #0
+	bl DisplaySprite
+	ldr r0, [r5, #0x10]
+	movs r4, #0x80
+	lsls r4, r4, #3
+	eors r0, r4
+	str r0, [r5, #0x10]
+	adds r0, r5, #0
+	bl DisplaySprite
+	ldr r0, [r5, #0x10]
+	eors r0, r4
+	movs r1, #0x80
+	lsls r1, r1, #4
+	eors r0, r1
+	str r0, [r5, #0x10]
+	adds r0, r5, #0
+	bl DisplaySprite
+	ldr r0, [r5, #0x10]
+	eors r0, r4
+	str r0, [r5, #0x10]
+	adds r0, r5, #0
+	bl DisplaySprite
+_0803EAB2:
+	pop {r4, r5, r6}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0803EAB8: .4byte 0xFFF3FFFF
+_0803EABC: .4byte 0xFFFFF3FF

asm/game__stage__camera__bg__shared_b.s

@@ -0,0 +1,179 @@
+.include "asm/macros.inc"
+.include "constants/constants.inc"
+
+.text
+.syntax unified
+.arm
+
+	thumb_func_start sub_803F920
+sub_803F920: @ 0x0803F920
+	ldr r1, _0803F928 @ =0x04000014
+	movs r0, #0
+	str r0, [r1]
+	bx lr
+	.align 2, 0
+_0803F928: .4byte 0x04000014
+
+	thumb_func_start sub_803F92C
+sub_803F92C: @ 0x0803F92C
+	lsls r0, r0, #0x18
+	lsrs r0, r0, #0x18
+	adds r3, r0, #0
+	subs r3, #0x5a
+	cmp r3, #0
+	blt _0803F95C
+	cmp r0, #0x9f @ DISPLAY_HEIGHT-1 ?
+	beq _0803F95C
+	ldr r0, _0803F954 @ =sa2__gUnknown_030022AC
+	ldr r1, [r0]
+	movs r0, #0xb4
+	lsls r0, r0, #1
+	adds r1, r1, r0
+	ldr r2, _0803F958 @ =0x04000014
+	lsls r0, r3, #2
+	adds r0, r0, r1
+	ldr r0, [r0]
+	str r0, [r2]
+	b _0803F962
+	.align 2, 0
+_0803F954: .4byte sa2__gUnknown_030022AC
+_0803F958: .4byte 0x04000014
+_0803F95C: @ inline of sub_803F920?
+	ldr r1, _0803F964 @ =0x04000014
+	movs r0, #0
+	str r0, [r1]
+_0803F962:
+	bx lr
+	.align 2, 0
+_0803F964: .4byte 0x04000014
+
+	thumb_func_start sub_803F968
+sub_803F968: @ 0x0803F968
+	ldr r3, _0803F994 @ =gCamera
+	ldr r0, _0803F998 @ =gStageTime
+	ldr r0, [r0]
+	movs r1, #1
+	ands r0, r1
+	cmp r0, #0
+	beq _0803F990
+	ldr r2, _0803F99C @ =gPseudoRandom
+	ldr r1, [r2]
+	ldr r0, _0803F9A0 @ =0x00196225
+	muls r0, r1, r0
+	ldr r1, _0803F9A4 @ =0x3C6EF35F
+	adds r0, r0, r1
+	str r0, [r2]
+	movs r1, #0xe0
+	lsls r1, r1, #0xb
+	ands r0, r1
+	lsrs r0, r0, #0x10
+	subs r0, #8
+	strh r0, [r3, #0xe]
+_0803F990:
+	bx lr
+	.align 2, 0
+_0803F994: .4byte gCamera
+_0803F998: .4byte gStageTime
+_0803F99C: .4byte gPseudoRandom
+_0803F9A0: .4byte 0x00196225
+_0803F9A4: .4byte 0x3C6EF35F
+
+	thumb_func_start sub_803F9A8
+sub_803F9A8: @ 0x0803F9A8
+	push {r4, r5, r6, lr}
+	mov r6, r8
+	push {r6}
+	sub sp, #8
+	movs r4, #1
+	ands r4, r2
+	lsls r4, r4, #2
+	ldr r2, _0803FA08 @ =gUnknown_084ADD38
+	adds r4, r4, r2
+	lsls r0, r0, #0x10
+	asrs r0, r0, #0x10
+	lsls r1, r1, #0x10
+	asrs r1, r1, #0x10
+	ldr r2, _0803FA0C @ =sub_803EA24
+	str r2, [sp]
+	ldr r2, _0803FA10 @ =TaskDestructor_MultiplayerSpriteTask
+	str r2, [sp, #4]
+	movs r2, #0
+	movs r3, #0
+	bl CreateMultiplayerSpriteTask
+	mov r8, r0
+	ldrh r5, [r0, #6]
+	ldr r0, _0803FA14 @ =0x03000018
+	adds r6, r5, r0
+	ldrb r0, [r4, #3]
+	bl VramMalloc
+	str r0, [r6, #4]
+	ldrh r0, [r4]
+	strh r0, [r6, #0xa]
+	ldrb r0, [r4, #2]
+	ldr r1, _0803FA18 @ =0x03000038
+	adds r5, r5, r1
+	strb r0, [r5]
+	movs r0, #0xf8
+	lsls r0, r0, #3
+	strh r0, [r6, #0x1a]
+	movs r0, #0xc0
+	lsls r0, r0, #6
+	str r0, [r6, #0x10]
+	mov r0, r8
+	add sp, #8
+	pop {r3}
+	mov r8, r3
+	pop {r4, r5, r6}
+	pop {r1}
+	bx r1
+	.align 2, 0
+_0803FA08: .4byte gUnknown_084ADD38
+_0803FA0C: .4byte sub_803EA24
+_0803FA10: .4byte TaskDestructor_MultiplayerSpriteTask
+_0803FA14: .4byte 0x03000018
+_0803FA18: .4byte 0x03000038
+
+	thumb_func_start sub_803FA1C
+sub_803FA1C: @ 0x0803FA1C
+	lsls r0, r0, #0x18
+	lsrs r0, r0, #0x18
+	adds r1, r0, #0
+	cmp r1, #0x64
+	bne _0803FA54
+	ldr r2, _0803FA48 @ =0x04000008
+	ldrh r1, [r2]
+	ldr r0, _0803FA4C @ =0x00003FFF
+	ands r0, r1
+	strh r0, [r2]
+	ldrh r0, [r2]
+	movs r3, #0x80
+	lsls r3, r3, #8
+	adds r1, r3, #0
+	orrs r0, r1
+	strh r0, [r2]
+	ldr r1, _0803FA50 @ =0x04000010
+	movs r0, #0xa0
+	lsls r0, r0, #0x10
+	str r0, [r1]
+	b _0803FA6C
+	.align 2, 0
+_0803FA48: .4byte 0x04000008
+_0803FA4C: .4byte 0x00003FFF
+_0803FA50: .4byte 0x04000010
+_0803FA54:
+	adds r0, r1, #0
+	subs r0, #0x66
+	lsls r0, r0, #0x18
+	lsrs r0, r0, #0x18
+	cmp r0, #0x1f
+	bhi _0803FA6C
+	ldr r2, _0803FA70 @ =0x04000054
+	subs r1, #0x65
+	asrs r1, r1, #1
+	movs r0, #0x10
+	subs r0, r0, r1
+	strh r0, [r2]
+_0803FA6C:
+	bx lr
+	.align 2, 0
+_0803FA70: .4byte 0x04000054

asm/game__stage__camera__bg__zone_1.s

@@ -0,0 +1,125 @@
+.include "asm/macros.inc"
+.include "constants/constants.inc"
+
+.text
+.syntax unified
+.arm
+
+	thumb_func_start StageBgUpdate_Zone1Acts12
+StageBgUpdate_Zone1Acts12: @ 0x0803E78C
+	push {r4, r5, r6, lr}
+	adds r4, r0, #0
+	ldr r2, _0803E854 @ =gCamera
+	movs r1, #0x10
+	ldrsh r0, [r2, r1]
+	subs r4, r4, r0
+	ldr r0, _0803E858 @ =gStageBackgroundsRam + 0xC0
+	ldr r3, _0803E85C @ =gBgScrollRegs
+	movs r1, #0
+	strh r1, [r2, #0x28]
+	strh r1, [r3, #0xc]
+	strh r1, [r2, #0x2a]
+	strh r1, [r3, #0xe]
+	strh r1, [r0, #0x30]
+	strh r1, [r0, #0x32]
+	bl DrawBackground
+	ldr r1, _0803E860 @ =gFlags
+	ldr r0, [r1]
+	movs r2, #4
+	orrs r0, r2
+	str r0, [r1]
+	ldr r1, _0803E864 @ =sa2__gUnknown_03002878
+	ldr r0, _0803E868 @ =0x0400001C
+	str r0, [r1]
+	ldr r0, _0803E86C @ =sa2__gUnknown_03002A80
+	strb r2, [r0]
+	ldr r0, _0803E870 @ =gBgOffsetsHBlank
+	ldr r1, [r0]
+	ldr r6, _0803E874 @ =gStageTime
+	movs r5, #0xff
+	movs r3, #0
+	movs r2, #7
+_0803E7CE:
+	ldr r0, [r6]
+	lsrs r0, r0, #4
+	ands r0, r5
+	strh r0, [r1]
+	adds r1, #2
+	strh r3, [r1]
+	adds r1, #2
+	subs r2, #1
+	cmp r2, #0
+	bge _0803E7CE
+	ldr r6, _0803E874 @ =gStageTime
+	movs r5, #0xff
+	movs r3, #0
+	movs r2, #0xf
+_0803E7EA:
+	ldr r0, [r6]
+	lsrs r0, r0, #5
+	ands r0, r5
+	strh r0, [r1]
+	adds r1, #2
+	strh r3, [r1]
+	adds r1, #2
+	subs r2, #1
+	cmp r2, #0
+	bge _0803E7EA
+	movs r2, #0x18
+	ldr r6, _0803E874 @ =gStageTime
+	movs r5, #0xff
+	movs r3, #0
+_0803E806:
+	ldr r0, [r6]
+	lsrs r0, r0, #6
+	ands r0, r5
+	strh r0, [r1]
+	adds r1, #2
+	strh r3, [r1]
+	adds r1, #2
+	adds r2, #1
+	cmp r2, #0x27
+	ble _0803E806
+	cmp r2, #0x57
+	bgt _0803E82E
+	movs r0, #0
+_0803E820:
+	strh r0, [r1]
+	adds r1, #2
+	strh r0, [r1]
+	adds r1, #2
+	adds r2, #1
+	cmp r2, #0x57
+	ble _0803E820
+_0803E82E:
+	cmp r2, #0x9f
+	bgt _0803E84E
+	movs r5, #0
+	adds r0, r2, #0
+	subs r0, #0x56
+	adds r3, r0, #0
+	muls r3, r4, r3
+_0803E83C:
+	asrs r0, r3, #8
+	strh r0, [r1]
+	adds r1, #2
+	strh r5, [r1]
+	adds r1, #2
+	adds r3, r3, r4
+	adds r2, #1
+	cmp r2, #0x9f
+	ble _0803E83C
+_0803E84E:
+	pop {r4, r5, r6}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0803E854: .4byte gCamera
+_0803E858: .4byte gStageBackgroundsRam + 0xC0
+_0803E85C: .4byte gBgScrollRegs
+_0803E860: .4byte gFlags
+_0803E864: .4byte sa2__gUnknown_03002878
+_0803E868: .4byte 0x0400001C
+_0803E86C: .4byte sa2__gUnknown_03002A80
+_0803E870: .4byte gBgOffsetsHBlank
+_0803E874: .4byte gStageTime