Compatibility (OSL Aroused & SLA NG)

Several mods ship their own SexLabAroused.esm that stubs slaFrameworkScr for backwards compatibility. The most common is OSL Aroused, which returns GetVersion() = 20140124 and does not register the slaSetArousalEffect / slaModArousalEffect ModEvents. Writing a universal interface that gracefully handles both is straightforward.

Detection

Both forks ship a quest with editor ID sla_Framework. Use that as your single presence check:

Quest Function GetFramework() Global
    return Quest.GetQuest("sla_Framework")
EndFunction

bool Function IsPresent() Global
    return Game.GetModByName("SexLabAroused.esm") != 255
EndFunction

; True only when real SLA NG is installed (OSL stub returns 20140124).
bool Function SupportsSLANG() Global
    Quest sla = GetFramework()
    if !sla
        return false
    endif
    return (sla as slaframeworkscr).GetVersion() > 20200000
EndFunction

Don't check for OSLAroused.esp

OSL ships its own SexLabAroused.esm, so GetModByName("SexLabAroused.esm") is present on both installs. Distinguish the forks by GetVersion(), not by ESP filename.

Known version numbers

Fork	GetVersion()	Registers ModEvents?
OSL Aroused (all versions)	20140124	No
SLAXSE2022	20190720	No
SexLab Aroused NG (this mod)	>= 20200000	Yes

Reading arousal (works on both forks)

slaFrameworkScr.GetActorArousal() is implemented by both forks and returns a value in 0–100. Prefer this over calling slaInternalModules.GetArousal() directly — it is portable.

Float Function GetArousal(Actor who) Global
    if !who
        return 0.0
    endif
    Quest sla = GetFramework()
    if !sla
        return 0.0
    endif
    return (sla as slaframeworkscr).GetActorArousal(who) as float
EndFunction

Writing arousal (version-gated)

Use the ModEvent path for real SLA NG. For the OSL stub, fall back to slaFrameworkScr.UpdateActorExposure(), which OSL implements as a direct native call:

; Adds `value` to actor's arousal, capped at 100.
Function ModifyArousal(Actor who, Float value) Global
    if !who
        return
    endif
    if SupportsSLANG()
        ; Real SLA NG: use the ModEvent API (see Dynamic Effects).
        int handle = ModEvent.Create("slaModArousalEffect")
        if handle
            ModEvent.PushForm(handle, who)
            ModEvent.PushString(handle, "MyMod_Arousal") ; namespace your effect ID
            ModEvent.PushFloat(handle, value)
            ModEvent.PushFloat(handle, 100.0)            ; upper limit
            ModEvent.Send(handle)
        endif
    else
        ; OSL stub: UpdateActorExposure is available on both forks.
        Quest sla = GetFramework()
        if sla
            (sla as slaframeworkscr).UpdateActorExposure(who, value as int)
        endif
    endif
EndFunction

For timed effects (ramps, decay), use slaSetArousalEffect guarded by SupportsSLANG(). Apply a one-shot UpdateActorExposure bump as the fallback — the timing won't be managed, but it preserves the direction and rough magnitude:

; Start a linear arousal climb at perDayDelta/day, capped at cap.
Function StartArousalRamp(Actor who, Float perDayDelta, Float cap) Global
    if !who || perDayDelta <= 0.0
        return
    endif
    if SupportsSLANG()
        int handle = ModEvent.Create("slaSetArousalEffect")
        if handle
            ModEvent.PushForm(handle, who)
            ModEvent.PushString(handle, "MyMod_Ramp")
            ModEvent.PushFloat(handle, 0.0)         ; initial delta
            ModEvent.PushInt(handle, 2)             ; functionId 2 = Linear
            ModEvent.PushFloat(handle, perDayDelta) ; param: change per game day
            ModEvent.PushFloat(handle, cap)         ; limit
            ModEvent.Send(handle)
        endif
    else
        Quest sla = GetFramework()
        if sla
            (sla as slaframeworkscr).UpdateActorExposure(who, perDayDelta as int)
        endif
    endif
EndFunction

; Stop the ramp (no-op on OSL stub — fallback writes aren't tracked).
Function StopArousalRamp(Actor who) Global
    if !who || !SupportsSLANG()
        return
    endif
    int handle = ModEvent.Create("slaSetArousalEffect")
    if handle
        ModEvent.PushForm(handle, who)
        ModEvent.PushString(handle, "MyMod_Ramp")
        ModEvent.PushFloat(handle, 0.0)
        ModEvent.PushInt(handle, 0)   ; functionId 0 = None (removes effect)
        ModEvent.PushFloat(handle, 0.0)
        ModEvent.PushFloat(handle, 0.0)
        ModEvent.Send(handle)
    endif
EndFunction

Putting it together as a Hidden interface script

Encapsulate all of this in a Hidden global script so callers don't need to know which fork is installed:

Scriptname MyMod_Arousal Hidden

bool Function IsPresent() Global
    return Game.GetModByName("SexLabAroused.esm") != 255
EndFunction

Quest Function GetFramework() Global
    return Quest.GetQuest("sla_Framework")
EndFunction

bool Function SupportsSLANG() Global
    Quest sla = GetFramework()
    if !sla
        return false
    endif
    return (sla as slaframeworkscr).GetVersion() > 20200000
EndFunction

Float Function GetArousal(Actor who) Global
    if !who
        return 0.0
    endif
    Quest sla = GetFramework()
    if !sla
        return 0.0
    endif
    return (sla as slaframeworkscr).GetActorArousal(who) as float
EndFunction

Function ModifyArousal(Actor who, Float value) Global
    if !who
        return
    endif
    if SupportsSLANG()
        int handle = ModEvent.Create("slaModArousalEffect")
        if handle
            ModEvent.PushForm(handle, who)
            ModEvent.PushString(handle, "MyMod_Arousal")
            ModEvent.PushFloat(handle, value)
            ModEvent.PushFloat(handle, 100.0)
            ModEvent.Send(handle)
        endif
    else
        Quest sla = GetFramework()
        if sla
            (sla as slaframeworkscr).UpdateActorExposure(who, value as int)
        endif
    endif
EndFunction

Callers then simply do:

if MyMod_Arousal.IsPresent()
    float arousal = MyMod_Arousal.GetArousal(akTarget)
    MyMod_Arousal.ModifyArousal(akTarget, 10.0)
endif