metaforce/Runtime/World/CAmbientAI.cpp

#include "CAmbientAI.hpp"
#include "CStateManager.hpp"
#include "CPlayer.hpp"
#include "TCastTo.hpp"

namespace urde
{

CAmbientAI::CAmbientAI(TUniqueId uid, std::string_view name, const CEntityInfo& info, const zeus::CTransform& xf,
                       CModelData&& mData, const zeus::CAABox& aabox, const CMaterialList& matList, float mass,
                       const CHealthInfo& hInfo, const CDamageVulnerability& dVuln,
                       const CActorParameters& aParms, float alertRange, float impactRange, s32 alertAnim, s32 impactAnim, bool active)
: CPhysicsActor(uid, active, name, info, xf, std::move(mData), matList, aabox, SMoverData(mass), aParms, 0.3f, 0.1f)
, x258_initialHealthInfo(hInfo)
, x260_healthInfo(hInfo)
, x268_dVuln(dVuln)
, x2d4_alertRange(alertRange)
, x2d8_impactRange(impactRange)
, x2dc_defaultAnim(GetModelData()->GetAnimationData()->GetDefaultAnimation())
, x2e0_alertAnim(alertAnim)
, x2e4_impactAnim(impactAnim)
{
    ModelData()->AnimationData()->EnableLooping(true);
}


void CAmbientAI::Accept(IVisitor& visitor)
{
    visitor.Visit(this);
}

void CAmbientAI::Think(float dt, CStateManager& mgr)
{
    if (!GetActive())
        return;

    if (GetModelData() && GetModelData()->GetAnimationData())
    {
        bool hasAnimTime = GetModelData()->GetAnimationData()->IsAnimTimeRemaining(dt - FLT_EPSILON, "Whole Body"sv);
        bool isLooping = GetModelData()->GetIsLoop();

        if (hasAnimTime || isLooping)
        {
            x2e8_25_animating  = true;
            SAdvancementDeltas deltas = UpdateAnimation(dt, mgr, x2e8_25_animating);
            MoveToOR(deltas.x0_posDelta, dt);
            RotateToOR(deltas.xc_rotDelta, dt);
        }

        if (!hasAnimTime || (x2e8_25_animating && !isLooping))
        {
            SendScriptMsgs(EScriptObjectState::MaxReached, mgr, EScriptObjectMessage::None);
            x2e8_25_animating = false;
        }
    }

    bool inAlertRange = (mgr.GetPlayer().GetTranslation() - GetTranslation()).magnitude() < x2d4_alertRange;
    bool inImpactRange = (mgr.GetPlayer().GetTranslation() - GetTranslation()).magnitude() < x2d8_impactRange;

    switch(x2d0_animState)
    {
    case EAnimationState::Ready:
    {
        if (inAlertRange)
        {
            x2d0_animState = EAnimationState::Alert;
            ModelData()->AnimationData()->SetAnimation(CAnimPlaybackParms(x2e0_alertAnim, -1, 1.f, true), false);
            ModelData()->EnableLooping(true);
            RandomizePlaybackRate(mgr);
        }
        break;
    }
    case EAnimationState::Alert:
    {
        if (!inAlertRange)
        {
            x2d0_animState = EAnimationState::Ready;
            ModelData()->AnimationData()->SetAnimation(CAnimPlaybackParms(x2dc_defaultAnim, -1, 1.f, true), false);
            ModelData()->EnableLooping(true);
            RandomizePlaybackRate(mgr);
        }
        else if (inImpactRange)
        {
            SendScriptMsgs(EScriptObjectState::Dead, mgr, EScriptObjectMessage::None);
            SetActive(false);
        }
        break;
    }
    case EAnimationState::Impact:
    {
        if (!x2e8_25_animating)
        {
            x2d0_animState = EAnimationState::Ready;
            ModelData()->AnimationData()->SetAnimation(CAnimPlaybackParms(x2dc_defaultAnim, -1, 1.f, true), false);
            ModelData()->EnableLooping(true);
            RandomizePlaybackRate(mgr);
        }
        break;
    }
    }

    if (!x2e8_24_dead)
    {
        CHealthInfo* hInfo = HealthInfo(mgr);
        if (hInfo->GetHP() <= 0.f)
        {
            x2e8_24_dead = true;
            SendScriptMsgs(EScriptObjectState::Dead, mgr, EScriptObjectMessage::None);
            RemoveEmitter();
            SetActive(false);
        }
    }
}

void CAmbientAI::AcceptScriptMsg(EScriptObjectMessage msg, TUniqueId uid, CStateManager& mgr)
{
    switch(msg)
    {
    case EScriptObjectMessage::Reset:
    {
        if (!GetActive())
            SetActive(true);
        x2d0_animState = EAnimationState::Ready;
        ModelData()->AnimationData()->SetAnimation(CAnimPlaybackParms(x2dc_defaultAnim, -1, 1.f, true), false);
        ModelData()->AnimationData()->EnableLooping(true);
        RandomizePlaybackRate(mgr);
        x2e8_24_dead = false;
        x260_healthInfo = x258_initialHealthInfo;
        break;
    }
    case EScriptObjectMessage::Damage:
    {
        if (GetActive())
        {
            x2d0_animState = EAnimationState::Impact;
            ModelData()->AnimationData()->SetAnimation(CAnimPlaybackParms(x2e4_impactAnim, -1, 1.f, true), false);
            ModelData()->AnimationData()->EnableLooping(false);
            RandomizePlaybackRate(mgr);
        }
        break;
    }
    case EScriptObjectMessage::InitializedInArea:
        RandomizePlaybackRate(mgr);
        break;
    default:
        break;
    }
    CPhysicsActor::AcceptScriptMsg(msg, uid, mgr);
}

std::experimental::optional<zeus::CAABox> CAmbientAI::GetTouchBounds() const
{
    if (GetActive())
        return {GetBoundingBox()};
    return {};
}

void CAmbientAI::RandomizePlaybackRate(CStateManager& mgr)
{
    ModelData()->AnimationData()->MultiplyPlaybackRate(0.4f * mgr.GetActiveRandom()->Float() + 0.8f);
}

}