#include "World/CScriptShadowProjector.hpp"
#include "World/CActorParameters.hpp"
#include "World/CProjectedShadow.hpp"
#include "CStateManager.hpp"
#include "TCastTo.hpp"

namespace urde
{

CScriptShadowProjector::CScriptShadowProjector(TUniqueId uid, const std::string& name, const CEntityInfo& info,
                                               const zeus::CTransform& xf, bool active, const zeus::CVector3f& offset,
                                               bool b2, float scale, float f2, float opacity, float opacityQ,
                                               s32 textureSize)
: CActor(uid, active, name, info, xf, CModelData::CModelDataNull(), CMaterialList(), CActorParameters::None(),
         kInvalidUniqueId)
, xe8_scale(scale)
, xec_offset(offset)
, xf8_zOffsetAdjust(f2)
, xfc_opacity(opacity)
, x100_opacityRecip(opacity < 0.00001 ? 1.f : opacityQ / opacity)
, x10c_textureSize(textureSize)
{
    x110_24_persistent = b2;
}

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

void CScriptShadowProjector::Think(float dt, CStateManager& mgr)
{
    if (GetActive() && x110_25_shadowInvalidated)
    {
        xfc_opacity = (x100_opacityRecip * xfc_opacity) - dt;
        if (dt > 0.f)
            return;

        x108_projectedShadow.reset();

        x110_25_shadowInvalidated = false;
        SendScriptMsgs(EScriptObjectState::Zero, mgr, EScriptObjectMessage::None);
    }
}

void CScriptShadowProjector::CreateProjectedShadow()
{
    if (!GetActive() || x104_target == kInvalidUniqueId || xfc_opacity <= 0.f)
        x108_projectedShadow.reset();
    else
        x108_projectedShadow.reset(new CProjectedShadow(x10c_textureSize, x10c_textureSize, x110_24_persistent));
}

void CScriptShadowProjector::AcceptScriptMsg(EScriptObjectMessage msg, TUniqueId uid, CStateManager& mgr)
{
    CActor::AcceptScriptMsg(msg, uid, mgr);
    if (msg == EScriptObjectMessage::Decrement)
    {
        if (x110_24_persistent)
            return;

        if (xfc_opacity <= 0.f)
            return;

        x110_25_shadowInvalidated = true;
    }
    else if (msg == EScriptObjectMessage::InitializedInArea)
    {
        for (const SConnection& conn : x20_conns)
        {
            if (conn.x0_state != EScriptObjectState::Play)
                continue;

            const CActor* act = TCastToConstPtr<CActor>(mgr.GetObjectById(mgr.GetIdForScript(conn.x8_objId)));
            if (!act)
                continue;
            const CModelData* mData = act->GetModelData();
            if (!mData || (!mData->GetAnimationData() && !mData->GetNormalModel()))
                continue;

            x104_target = act->GetUniqueId();
        }
        if (x104_target == kInvalidUniqueId)
             mgr.FreeScriptObject(GetUniqueId());
        else
            CreateProjectedShadow();

    }
    else if (msg == EScriptObjectMessage::Activate)
        CreateProjectedShadow();
}

void CScriptShadowProjector::PreRender(CStateManager&, const zeus::CFrustum &)
{

}
}