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Perfectium/logic/spawners.asm
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INCLUDE include\master.inc
; AFortPickup field offsets
AFPICKUP_bReplicates EQU 0082h ; AActor::bReplicates bitfield (byte bit6)
AFPICKUP_PrimaryPickupItemEntry EQU 0350h ; FFortItemEntry base
FITE_Count EQU 000Ch ; +0C within FFortItemEntry
FITE_ItemDefinition EQU 0018h ; +18
FITE_LoadedAmmo EQU 0028h ; +28
AFPICKUP_PickupLocationData EQU 0428h ; FFortPickupLocationData
FPLD_PickupTarget EQU 0000h ; +00 within PickupLocationData
FPLD_ItemOwner EQU 0010h ; +10
FPLD_FlyTime EQU 0030h ; +30 (float)
AFPICKUP_bPickedUp EQU 04C0h ; bool (Net)
AFPICKUP_bTossedFromContainer EQU 0349h ; bool (net, after bRandomRotation)
; ABuildingTrap offsets
ABTRAP_TrapData EQU 0580h ; UFortTrapItemDefinition*
ABTRAP_AttachedTo EQU 0570h ; ABuildingActor*
ABTRAP_Team EQU 04C5h ; EFortTeam (1 byte) - from ABuildingActor
; UFortAbilitySet::GameplayAbilities TArray at +0x38
UFAS_GameplayAbilities EQU 0038h
.const
szFn_BeginDeferredSpawn DB "Function Engine.GameplayStatics.BeginDeferredActorSpawnFromClass", 0
szFn_FinishSpawning DB "Function Engine.GameplayStatics.FinishSpawningActor", 0
szFn_SpawnBuildingGA DB "Function FortniteGame.FortKismetLibrary.STATIC_SpawnBuildingGameplayActor", 0
szFn_TossPickup DB "Function FortniteGame.FortPickup.TossPickup", 0
szFn_OnRep_PrimaryPE DB "Function FortniteGame.FortPickup.OnRep_PrimaryPickupItemEntry", 0
szFn_OnRep_bPickedUp DB "Function FortniteGame.FortPickup.OnRep_bPickedUp", 0
szFn_OnRep_TossedFrCont DB "Function FortniteGame.FortPickup.OnRep_TossedFromContainer", 0
szFn_OnRep_PickupLocDat DB "Function FortniteGame.FortPickup.OnRep_PickupLocationData", 0
szFn_InitKismetBuilding DB "Function FortniteGame.BuildingActor.InitializeKismetSpawnedBuildingActor", 0
szFn_OnRep_AttachedTo DB "Function FortniteGame.BuildingActor.OnRep_AttachedTo", 0
szFn_GetBlueprintClass DB "Function FortniteGame.FortTrapItemDefinition.GetBlueprintClass", 0
szClass_GameplayStatics DB "Class Engine.GameplayStatics", 0
szClass_FortKismet DB "Class FortniteGame.FortKismetLibrary", 0
szClass_AFortPickup DB "Class FortniteGame.FortPickup", 0
szLogSpawnNull DB "[SPAWNERS] SpawnActor returned null!", 0
szLogDecoNull DB "[SPAWNERS] SpawnDeco: null tool or params.", 0
.data?
pFn_BeginDeferredSpawn QWORD ?
pFn_FinishSpawning QWORD ?
pFn_SpawnBuildingGA QWORD ?
pFn_TossPickup QWORD ?
pFn_OnRep_PrimaryPE QWORD ?
pFn_OnRep_bPickedUp QWORD ?
pFn_OnRep_TossedFrCont QWORD ?
pFn_OnRep_PickupLocDat QWORD ?
pFn_InitKismetBuilding QWORD ?
pFn_OnRep_AttachedTo QWORD ?
pFn_GetBlueprintClass QWORD ?
pClass_GameplayStatics QWORD ?
pClass_FortKismet QWORD ?
pClass_AFortPickup_C QWORD ?
.code
; Internal: lazy-load cached UFunction*.
; RCX = &cache_var (QWORD*), RDX = szFunctionPath (PTR BYTE)
; Returns UFunction* in RAX.
Spawners__LoadFn PROC
mov rax, QWORD PTR [rcx]
test rax, rax
jnz @@done
push rcx ; save cache ptr
sub rsp, 32
; rcx already is the cache ptr - need path in rcx for SDK_FindObject
mov rcx, rdx
call SDK_FindObject
add rsp, 32
pop rcx
mov QWORD PTR [rcx], rax
@@done:
ret
Spawners__LoadFn ENDP
; Internal: lazy-load cached UClass*.
; RCX = &cache_var, RDX = szClassName
Spawners__LoadClass PROC
mov rax, QWORD PTR [rcx]
test rax, rax
jnz @@done
push rcx
sub rsp, 32
mov rcx, rdx
call SDK_FindClass
add rsp, 32
pop rcx
mov QWORD PTR [rcx], rax
@@done:
ret
Spawners__LoadClass ENDP
; AActor* Spawners_SpawnActor(UClass* ActorClass,
; FVector* pLocation,
; AActor* Owner)
; RCX = ActorClass, RDX = FVector* location (may be NULL -> {0,0,0}),
; R8 = AActor* Owner (may be NULL)
;
; Calls STATIC_BeginDeferredActorSpawnFromClass then FinishSpawningActor.
;
; BeginDeferredActorSpawnFromClass params (at [rsp+X]):
; +00: UObject* WorldContextObject (8)
; +08: UClass* ActorClass (8)
; +10: FTransform SpawnTransform (0x30 = 48 bytes)
; +40: BYTE CollisionHandlingOverride (ESpawnActorCollisionHandlingMethod)
; +41..+47: 7 pad bytes
; +48: AActor* Owner (8)
; +50: AActor* ReturnValue (8 OUT)
; Total params = 0x58 bytes.
;
; FinishSpawningActor params:
; +00: AActor* Actor (8)
; +08: FTransform (0x30)
; +38: AActor* ReturnValue (8 OUT)
; Total = 0x40 bytes.
; Offsets within BeginDeferred params (relative to rsp+32)
BDS_WorldCtx EQU 000h
BDS_Class EQU 008h
BDS_Transform EQU 010h ; FTransform (0x30 bytes)
BDS_Collision EQU 040h ; BYTE (collision method)
BDS_Owner EQU 048h
BDS_RetVal EQU 050h ; OUT AActor*
; Offsets within FinishSpawning params (relative to rsp+120)
FS_Actor EQU 000h
FS_Transform EQU 008h
FS_RetVal EQU 038h
; FTransform layout (0x30 bytes):
; +00: FQuat Rotation (16 bytes: X,Y,Z,W)
; +10: FVector Translation (12 bytes: X,Y,Z)
; +1C: pad (4)
; +20: FVector Scale3D (12 bytes: X,Y,Z)
; +2C: pad (4)
; Identity FTransform: Rotation=(0,0,0,1), Translation=(0,0,0), Scale=(1,1,1)
fIdentityQuat_W REAL4 1.0
fScale_One REAL4 1.0
Spawners_SpawnActor PROC
push rbp
push rbx
push rsi
push rdi
push r12
sub rsp, 0C0h
mov rbx, rcx ; rbx = ActorClass
mov rsi, rdx ; rsi = FVector* location (may be 0)
mov rdi, r8 ; rdi = Owner
test rbx, rbx
jz @@done_null
; Get/cache GameplayStatics class
lea rcx, pClass_GameplayStatics
lea rdx, szClass_GameplayStatics
call Spawners__LoadClass
mov r12, rax ; r12 = GameplayStatics class
test r12, r12
jz @@done_null
; Get/cache BeginDeferredActorSpawnFromClass fn
lea rcx, pFn_BeginDeferredSpawn
lea rdx, szFn_BeginDeferredSpawn
call Spawners__LoadFn
test rax, rax
jz @@done_null
; Zero params block
lea rcx, [rsp+32]
xor edx, edx
mov r8d, 058h ; sizeof params
call memset
; Fill BeginDeferred params
call SDK_GetWorld
mov QWORD PTR [rsp + 32 + BDS_WorldCtx], rax
mov QWORD PTR [rsp + 32 + BDS_Class], rbx
; FTransform at [rsp+32+BDS_Transform]:
; Rotation.W = 1.0 (identity quat)
mov eax, 3F800000h ; 1.0f
mov DWORD PTR [rsp + 32 + BDS_Transform + 0Ch], eax ; Rotation.W
; Scale3D = (1,1,1)
mov DWORD PTR [rsp + 32 + BDS_Transform + 20h], eax ; Scale3D.X
mov DWORD PTR [rsp + 32 + BDS_Transform + 24h], eax ; Scale3D.Y
mov DWORD PTR [rsp + 32 + BDS_Transform + 28h], eax ; Scale3D.Z
; If location provided, copy XYZ into Translation
test rsi, rsi
jz @@default_loc
mov eax, DWORD PTR [rsi]
mov DWORD PTR [rsp + 32 + BDS_Transform + 10h], eax ; X
mov eax, DWORD PTR [rsi + 4]
mov DWORD PTR [rsp + 32 + BDS_Transform + 14h], eax ; Y
mov eax, DWORD PTR [rsi + 8]
mov DWORD PTR [rsp + 32 + BDS_Transform + 18h], eax ; Z
@@default_loc:
; Collision = ESpawnCollision_AdjustIfPossibleButAlwaysSpawn (2)
mov BYTE PTR [rsp + 32 + BDS_Collision], ESpawnCollision_AdjustIfPossibleButAlwaysSpawn
mov QWORD PTR [rsp + 32 + BDS_Owner], rdi
; Load BeginDeferred fn (already in rax from LoadFn call above - lost)
; Need to reload from cache
mov rax, QWORD PTR [pFn_BeginDeferredSpawn]
mov rcx, r12
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
; FirstActor = params.ReturnValue
mov rbp, QWORD PTR [rsp + 32 + BDS_RetVal]
test rbp, rbp
jz @@done_null
; Get FinishSpawningActor fn
lea rcx, pFn_FinishSpawning
lea rdx, szFn_FinishSpawning
call Spawners__LoadFn
test rax, rax
jz @@done_null
; Fill FinishSpawning params at [rsp+120]
lea rcx, [rsp+120]
xor edx, edx
mov r8d, 040h
call memset
mov QWORD PTR [rsp + 120 + FS_Actor], rbp
; Copy FTransform from BeginDeferred params
lea rcx, [rsp + 120 + FS_Transform]
lea rdx, [rsp + 32 + BDS_Transform]
mov r8d, 030h
call memcpy
mov rax, QWORD PTR [pFn_FinishSpawning]
mov rcx, r12
mov rdx, rax
lea r8, [rsp+120]
call QWORD PTR [ProcessEvent]
mov rax, QWORD PTR [rsp + 120 + FS_RetVal]
jmp @@done
@@done_null:
xor eax, eax
@@done:
add rsp, 0C0h
pop r12
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SpawnActor ENDP
; AActor* Spawners_SpawnBuilding(UClass* BGAClass,
; FTransform* pTransform,
; APlayerPawn_Athena_C* Pawn)
; RCX = BGAClass, RDX = FTransform*, R8 = Pawn
;
; Calls STATIC_SpawnBuildingGameplayActor via FortKismetLibrary.
;
; Params layout:
; +00: UClass* BGAClass (8)
; +08: FTransform (0x30 bytes) (48)
; +38: AFortPawn* Instigator (8)
; +40: ABuildingGameplayActor* ReturnValue (8 OUT)
; Total = 0x48
;
; Frame: 4 pushes (rbp,rbx,rsi,rdi) + sub 58h
; 4 pushes: RSP=8; sub 58h(88)=8 -> 0
; [rsp+32..+31+0x48=79] = params (0x48 = 72 bytes)
Spawners_SpawnBuilding PROC
push rbp
push rbx
push rsi
push rdi
sub rsp, 58h
mov rbx, rcx ; rbx = BGAClass
mov rsi, rdx ; rsi = FTransform*
mov rdi, r8 ; rdi = Pawn
test rbx, rbx
jz @@null
test rsi, rsi
jz @@null
; Get FortKismetLibrary class
lea rcx, pClass_FortKismet
lea rdx, szClass_FortKismet
call Spawners__LoadClass
mov rbp, rax
test rbp, rbp
jz @@null
; Get STATIC_SpawnBuildingGameplayActor fn
lea rcx, pFn_SpawnBuildingGA
lea rdx, szFn_SpawnBuildingGA
call Spawners__LoadFn
test rax, rax
jz @@null
; Zero params at [rsp+32]
lea rcx, [rsp+32]
xor edx, edx
mov r8d, 048h
call memset
; Fill params
mov QWORD PTR [rsp+32], rbx ; BGAClass
lea rcx, [rsp + 32 + 8] ; dest = &params.Transform
mov rdx, rsi ; src = FTransform*
mov r8d, 030h
call memcpy
mov QWORD PTR [rsp + 32 + 38h], rdi ; Instigator = Pawn
mov rax, QWORD PTR [pFn_SpawnBuildingGA]
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
mov rax, QWORD PTR [rsp + 32 + 40h]
jmp @@done
@@null:
xor eax, eax
@@done:
add rsp, 58h
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SpawnBuilding ENDP
; AFortPickup* Spawners_SummonPickup(AFortPlayerPawn* Pawn,
; UFortWorldItemDefinition* ItemDef,
; DWORD Count,
; FVector* pLocation)
; RCX = Pawn, RDX = ItemDef, R8D = Count, R9 = FVector*
;
; Frame: 5 pushes (rbp,rbx,rsi,rdi,r12) + sub 50h
; 5 pushes -> RSP=0 mod16; sub 50h(80) mod16=0
; [rsp+32..+47] = scratch / TossPickup params setup
; TossPickup params:
; +00: FVector FinalLocation (0x0C)
; +0C: 4 pad (for AActor* alignment)
; +10: AFortPawn* ItemOwner (8)
; +18: int OverrideMaxStackCount (4)
; +1C: bool bToss (1)
; +1D: 3 pad
; Total: 0x20
Spawners_SummonPickup PROC
push rbp
push rbx
push rsi
push rdi
push r12
sub rsp, 50h
mov rbx, rcx ; rbx = Pawn
mov rsi, rdx ; rsi = ItemDef
mov edi, r8d ; edi = Count
mov r12, r9 ; r12 = FVector* location
; SpawnActor<AFortPickup>(Location, Pawn)
; Get AFortPickup class
mov rax, QWORD PTR [pClass_AFortPickup_C]
test rax, rax
jnz @@have_cls
lea rcx, szClass_AFortPickup
call SDK_FindClass
mov QWORD PTR [pClass_AFortPickup_C], rax
@@have_cls:
test rax, rax
jz @@null
mov rcx, rax ; ActorClass = AFortPickup
mov rdx, r12 ; pLocation
mov r8, rbx ; Owner = Pawn
call Spawners_SpawnActor
test rax, rax
jz @@null
mov rbp, rax ; rbp = FortPickup*
; Set bReplicates = true (bitfield: byte at 0x82, bit 6 = 0x40)
or BYTE PTR [rbp + 082h], 040h
; PrimaryPickupItemEntry.Count = Count
mov DWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_Count], edi
; PrimaryPickupItemEntry.ItemDefinition = ItemDef
mov QWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_ItemDefinition], rsi
; OnRep_PrimaryPickupItemEntry()
mov rax, QWORD PTR [pFn_OnRep_PrimaryPE]
test rax, rax
jnz @@have_onrep_pe
lea rcx, pFn_OnRep_PrimaryPE
lea rdx, szFn_OnRep_PrimaryPE
call Spawners__LoadFn
@@have_onrep_pe:
test rax, rax
jz @@skip_onrep_pe
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@skip_onrep_pe:
; TossPickup(Location, Pawn, 6, true)
mov rax, QWORD PTR [pFn_TossPickup]
test rax, rax
jnz @@have_toss
lea rcx, pFn_TossPickup
lea rdx, szFn_TossPickup
call Spawners__LoadFn
@@have_toss:
test rax, rax
jz @@skip_toss
; Build TossPickup params on stack at [rsp+32] (0x20 bytes)
xor ecx, ecx
mov QWORD PTR [rsp+32], rcx
mov QWORD PTR [rsp+40], rcx
mov QWORD PTR [rsp+48], rcx
; FVector FinalLocation = *pLocation (or 0,0,0 if null)
test r12, r12
jz @@toss_zero_loc
mov ecx, DWORD PTR [r12]
mov DWORD PTR [rsp+32], ecx ; X
mov ecx, DWORD PTR [r12+4]
mov DWORD PTR [rsp+36], ecx ; Y
mov ecx, DWORD PTR [r12+8]
mov DWORD PTR [rsp+40], ecx ; Z
@@toss_zero_loc:
; Pad at [rsp+44] = 0 already
mov QWORD PTR [rsp+48], rbx ; ItemOwner = Pawn (at +0x10)
; +0x0C = 4 pad bytes = rsp+44..rsp+47
; +0x10 = AFortPawn* ItemOwner = rsp+48..rsp+55 <- stored above
mov DWORD PTR [rsp+56], 6 ; OverrideMaxStackCount = 6 (at +0x18)
mov BYTE PTR [rsp+60], 1 ; bToss = true (at +0x1C)
mov rdx, rax ; fn
mov rcx, rbp ; this = FortPickup
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@skip_toss:
mov rax, rbp
jmp @@done
@@null:
xor eax, eax
@@done:
add rsp, 50h
pop r12
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SummonPickup ENDP
; void Spawners_SummonPickupFromChest(UFortWorldItemDefinition* ItemDef,
; DWORD Count, FVector* pLocation)
; RCX = ItemDef, RDX = Count, R8 = FVector* location
; Frame: 4 pushes + sub 38h -> 8 mod16
Spawners_SummonPickupFromChest PROC
push rbp
push rbx
push rsi
push rdi
sub rsp, 38h
mov rbx, rcx ; ItemDef
mov esi, edx ; Count
mov rdi, r8 ; FVector*
; Get AFortPickup class
mov rax, QWORD PTR [pClass_AFortPickup_C]
test rax, rax
jnz @@have_cls
lea rcx, szClass_AFortPickup
call SDK_FindClass
mov QWORD PTR [pClass_AFortPickup_C], rax
@@have_cls:
test rax, rax
jz @@done
mov rcx, rax
mov rdx, rdi ; location
xor r8, r8 ; Owner = null
call Spawners_SpawnActor
test rax, rax
jz @@done
mov rbp, rax ; FortPickup*
; bReplicates = true
or BYTE PTR [rbp + 082h], 040h
; bTossedFromContainer = true
mov BYTE PTR [rbp + AFPICKUP_bTossedFromContainer], 1
; PrimaryPickupItemEntry.Count, ItemDefinition
mov DWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_Count], esi
mov QWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_ItemDefinition], rbx
; OnRep_PrimaryPickupItemEntry()
mov rax, QWORD PTR [pFn_OnRep_PrimaryPE]
test rax, rax
jz @@skip_pe
lea rcx, [rsp+32]
; rcx should be FortPickup
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@skip_pe:
; OnRep_TossedFromContainer()
mov rax, QWORD PTR [pFn_OnRep_TossedFrCont]
test rax, rax
jnz @@have_tc
lea rcx, pFn_OnRep_TossedFrCont
lea rdx, szFn_OnRep_TossedFrCont
call Spawners__LoadFn
@@have_tc:
test rax, rax
jz @@done
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@done:
add rsp, 38h
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SummonPickupFromChest ENDP
; void Spawners_SpawnPickupFromFloor(UFortWorldItemDefinition* ItemDef,
; DWORD Count, FVector* pLocation)
; Frame: 4 pushes + sub 38h
Spawners_SpawnPickupFromFloor PROC
push rbp
push rbx
push rsi
push rdi
sub rsp, 38h
mov rbx, rcx
mov esi, edx
mov rdi, r8
mov rax, QWORD PTR [pClass_AFortPickup_C]
test rax, rax
jnz @@have_cls
lea rcx, szClass_AFortPickup
call SDK_FindClass
mov QWORD PTR [pClass_AFortPickup_C], rax
@@have_cls:
test rax, rax
jz @@done
mov rcx, rax
mov rdx, rdi
xor r8, r8
call Spawners_SpawnActor
test rax, rax
jz @@done
mov rbp, rax
or BYTE PTR [rbp + 082h], 040h
mov DWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_Count], esi
mov QWORD PTR [rbp + AFPICKUP_PrimaryPickupItemEntry + FITE_ItemDefinition], rbx
mov rax, QWORD PTR [pFn_OnRep_PrimaryPE]
test rax, rax
jz @@done
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@done:
add rsp, 38h
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SpawnPickupFromFloor ENDP
; void Spawners_SpawnDeco(AFortDecoTool* Tool,
; AFortDecoTool_ServerSpawnDeco_Params* pParams)
; RCX = Tool, RDX = pParams
;
; Source: Spawners.h::SpawnDeco()
;
; pParams layout (AFortDecoTool_ServerSpawnDeco_Params):
; +00: FRotator Rotation (12 bytes)
; +0C: 4 pad
; +10: FVector Location (12 bytes)
; +1C: 4 pad
; +20: ABuildingActor* AttachedActor (8 bytes)
; AFortDecoTool_ServerSpawnDeco_Params offsets
DECO_Rotation EQU 000h ; FRotator (12 bytes)
DECO_Location EQU 010h ; FVector (12 bytes) - after 4 pad
DECO_AttachedActor EQU 020h ; ABuildingActor*
; AFortDecoTool::ItemDefinition offset
ADECOTOOL_ItemDef EQU 04E8h
; UFortTrapItemDefinition::GetBlueprintClass params: {UClass* ReturnValue}
; GetBlueprintClass params size = 8
; ABuildingTrap fields
ABTRAP_AbilitySet_offset EQU 0E20h ; from Phase 2 findings (FN_FortniteGame_classes.hpp)
; Note: The C++ calls Trap->AbilitySet->GameplayAbilities[i]
; ABuildingActor::AbilitySet at 0x0E20, UFortAbilitySet::GameplayAbilities TArray at +0x38
Spawners_SpawnDeco PROC
push rbp
push rbx
push rsi
push rdi
push r12
push r13
push r14
sub rsp, 70h
test rcx, rcx
jz @@done
test rdx, rdx
jz @@done
mov r12, rcx ; r12 = Tool (AFortDecoTool*)
mov r13, rdx ; r13 = pParams
; ItemDef = Tool->ItemDefinition (UFortTrapItemDefinition*)
mov r14, QWORD PTR [r12 + ADECOTOOL_ItemDef]
test r14, r14
jz @@done
; Build FTransform from Params:
; Rotation (FQuat via RotToQuat) + Translation (Location) + Scale (1,1,1)
; FTransform at [rsp+32] (0x30 bytes):
lea rcx, [rsp+32] ; &FQuat output (first 16 bytes of transform)
lea rdx, [r13 + DECO_Rotation] ; &FRotator input
call Utils_RotToQuat
; Translation = Location
mov eax, DWORD PTR [r13 + DECO_Location]
mov DWORD PTR [rsp + 32 + 10h], eax ; X
mov eax, DWORD PTR [r13 + DECO_Location + 4]
mov DWORD PTR [rsp + 32 + 14h], eax ; Y
mov eax, DWORD PTR [r13 + DECO_Location + 8]
mov DWORD PTR [rsp + 32 + 18h], eax ; Z
; Scale3D = (1,1,1)
mov eax, 3F800000h
mov DWORD PTR [rsp + 32 + 20h], eax
mov DWORD PTR [rsp + 32 + 24h], eax
mov DWORD PTR [rsp + 32 + 28h], eax
; Get blueprint class from TrapItemDefinition
; Call GetBlueprintClass via ProcessEvent
mov rax, QWORD PTR [pFn_GetBlueprintClass]
test rax, rax
jnz @@have_gbc
lea rcx, pFn_GetBlueprintClass
lea rdx, szFn_GetBlueprintClass
call Spawners__LoadFn
@@have_gbc:
test rax, rax
jz @@done
; GetBlueprintClass params: {UClass* ReturnValue} (8 bytes at [rsp+80])
xor rbp, rbp
mov QWORD PTR [rsp+80], rbp ; ReturnValue = null
mov rcx, r14 ; this = TrapItemDef
mov rdx, rax
lea r8, [rsp+80]
call QWORD PTR [ProcessEvent]
mov rbx, QWORD PTR [rsp+80] ; rbx = Trap UClass*
test rbx, rbx
jz @@done
; SpawnActor(TrapClass, FTransform{rsp+32})
mov rcx, rbx ; ActorClass
lea rdx, [rsp + 32 + 10h] ; Location = Translation part of transform
xor r8, r8
call Spawners_SpawnActor
test rax, rax
jz @@done
mov rbp, rax ; rbp = Trap (ABuildingTrap*)
; Trap->TrapData = TrapDef
mov QWORD PTR [rbp + ABTRAP_TrapData], r14
; Get Pawn = Tool->Owner
mov rbx, QWORD PTR [r12 + 0108h] ; AActor::Owner at 0x108
; Trap->InitializeKismetSpawnedBuildingActor(Trap, PC)
; PC = Pawn->Controller
mov rsi, QWORD PTR [rbx + 0228h] ; Pawn->Controller (AController*)
; PC = cast to AFortPlayerController
mov rax, QWORD PTR [pFn_InitKismetBuilding]
test rax, rax
jnz @@have_ikb
lea rcx, pFn_InitKismetBuilding
lea rdx, szFn_InitKismetBuilding
call Spawners__LoadFn
@@have_ikb:
test rax, rax
jz @@skip_init
; Params: {ABuildingActor* BuildingOwner, AFortPlayerController* SpawningController}
mov QWORD PTR [rsp+32], rbp ; BuildingOwner = Trap itself
mov QWORD PTR [rsp+40], rsi ; SpawningController
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@skip_init:
; Trap->AttachedTo = pParams->AttachedActor
mov rax, QWORD PTR [r13 + DECO_AttachedActor]
mov QWORD PTR [rbp + ABTRAP_AttachedTo], rax
; OnRep_AttachedTo()
mov rax, QWORD PTR [pFn_OnRep_AttachedTo]
test rax, rax
jnz @@have_rat
lea rcx, pFn_OnRep_AttachedTo
lea rdx, szFn_OnRep_AttachedTo
call Spawners__LoadFn
@@have_rat:
test rax, rax
jz @@skip_rat
mov rcx, rbp
mov rdx, rax
lea r8, [rsp+32]
call QWORD PTR [ProcessEvent]
@@skip_rat:
; Trap->Team = PlayerState->TeamIndex
; PlayerState at Controller + 0x248 (ACONTROLLER_PlayerState)
mov rdi, QWORD PTR [rsi + 0248h] ; PlayerState
test rdi, rdi
jz @@skip_team
movzx eax, BYTE PTR [rdi + 0F60h] ; AFortPlayerStateAthena::TeamIndex
mov BYTE PTR [rbp + ABTRAP_Team], al
@@skip_team:
; Apply abilities from AbilitySet
; Trap->AbilitySet at ABTRAP_AbilitySet_offset = 0x0E20
mov r14, QWORD PTR [rbp + ABTRAP_AbilitySet_offset]
test r14, r14
jz @@done
; AbilitySet->GameplayAbilities (TArray<UClass*>) at +0x38
mov rsi, QWORD PTR [r14 + UFAS_GameplayAbilities] ; Data
mov edi, DWORD PTR [r14 + UFAS_GameplayAbilities + 8] ; Num
test rsi, rsi
jz @@done
xor r13d, r13d ; i = 0
@@ability_loop:
cmp r13d, edi
jge @@done
mov rax, QWORD PTR [rsi + r13*8]
test rax, rax
jz @@next_ability
; Pawn = rbx
mov rcx, rbx
mov rdx, rax
call Abilities_GrantGameplayAbility
@@next_ability:
inc r13d
jmp @@ability_loop
@@done:
add rsp, 70h
pop r14
pop r13
pop r12
pop rdi
pop rsi
pop rbx
pop rbp
ret
Spawners_SpawnDeco ENDP
; Spawners_SpawnActor_ByLocation
; In : RCX = UClass* (actor class)
; RDX = FVector* (location)
; R8 = FRotator* (rotation - ignored; identity used)
; R9 = AActor* (owner)
; Out: RAX = spawned AActor* or NULL
;
; Thin wrapper: moves Owner from R9 to R8, calls Spawners_SpawnActor.
Spawners_SpawnActor_ByLocation PROC
mov r8, r9
jmp Spawners_SpawnActor
Spawners_SpawnActor_ByLocation ENDP
END
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