CWE-ou-minkata/Sources/Plasma/PubUtilLib/plAvatar/plAvLadderModifier.cpp

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*==LICENSE==*/
#include "plPhysicalControllerCore.h"

#include "HeadSpin.h"
#include <cmath>

// singular
#include "plAvLadderModifier.h"

// local
#include "plArmatureMod.h"
#include "plAvatarMgr.h"
#include "plAvBrainGeneric.h"
#include "plAGAnim.h"
#include "plAnimStage.h"

// global
#include "plCreatableIndex.h"
// #include "plgDispatch.h"                     // Message Dependencies
#include "hsStream.h"

//other
#include "plMessage/plCollideMsg.h"
#include "plMessage/plAvatarMsg.h"
#include "pnMessage/plNotifyMsg.h"
#include "plStatusLog/plStatusLog.h"
#include "pnKeyedObject/plKey.h"
#include "pnMessage/plEnableMsg.h"

#include "pnMessage/plTimeMsg.h"
#include "plgDispatch.h"
#include "pnNetCommon/plNetApp.h"
#include "pnSceneObject/plCoordinateInterface.h"
#include "plAvatar/plAvBrainHuman.h"
#include "plModifier/plDetectorLog.h"

enum NotifyType
{
    kNotifyTrigger,
    kNotifyAvatarOnLadder,
};

// CTOR default
plAvLadderMod::plAvLadderMod()
: fGoingUp(true),
  fType(kBig),
  fLoops(0),
  fEnabled(true),
  fAvatarInBox(false),
  fLadderView(0,0,0),
  fAvatarMounting(false)
{
    fTarget = nil;
}

// CTOR goingUp, type, loops
plAvLadderMod::plAvLadderMod(bool goingUp, int type, int loops, bool enabled, hsVector3& ladderView)
: fGoingUp(goingUp),
  fType(type),
  fLoops(loops),
  fEnabled(enabled),
  fAvatarInBox(false),
  fLadderView(ladderView)
{
    fTarget = nil;
}

// Must be facing within 45 degrees of the ladder
static const float kTolerance = cos(hsDegreesToRadians(45));

bool plAvLadderMod::IIsReadyToClimb()
{
    if (fAvatarMounting)
        return false;

    plArmatureMod* armMod = plAvatarMgr::GetInstance()->GetLocalAvatar();
    plSceneObject* avatar = armMod->GetTarget(0);
    if (avatar)
    {
        hsVector3 playerView = avatar->GetCoordinateInterface()->GetLocalToWorld().GetAxis(hsMatrix44::kView);
        playerView.fZ = 0;

        // Are we facing towards the ladder?
        float dot = playerView * fLadderView;

        bool movingForward = false;

        // And are we walking towards it?
        hsAssert(armMod, "Avatar doesn't have an armature mod");
        if (armMod)
        {
            plAvBrainHuman* brain = plAvBrainHuman::ConvertNoRef(armMod->GetCurrentBrain());
            if (brain && brain->IsMovingForward() && brain->fWalkingStrategy->IsOnGround())
                movingForward = true;
        }

        if (dot >= kTolerance && movingForward)
        {
            DetectorLogSpecial("%s: Ladder starting climb (%f)",
                               GetKeyName().c_str(), hsRadiansToDegrees(acos(dot)));
            return true;
        }
        else if (movingForward)
        {
//          DetectorLog("%s: Ladder rejecting climb (%f)", GetKeyName().c_str(), hsRadiansToDegrees(acos(dot)));
            return false;
        }
    }

    return false;
}

// use a plNotify (to ourself) to propagate across the network
void plAvLadderMod::ITriggerSelf(plKey avKey)
{
    if (fEnabled)
    {
        plKey avPhysKey = avKey;
        // I'm going to lie and pretend it's from the avatar. the alternative is lengthy and unreadable.
        plNotifyMsg *notifyMsg = new plNotifyMsg(avPhysKey, GetKey());
        notifyMsg->fID = kNotifyTrigger;
        notifyMsg->Send();
        fAvatarMounting = true;
    }
}

// MSGRECEIVE
bool plAvLadderMod::MsgReceive(plMessage* msg)
{
    // Avatar is entering or exiting our detector box
    plCollideMsg* collMsg = plCollideMsg::ConvertNoRef(msg);
    if (collMsg)
    {
        // make sure this is the local player... the notify will be the thing that propagates over the network
        if (plNetClientApp::GetInstance()->GetLocalPlayerKey() != collMsg->fOtherKey)
            return true;

        fAvatarInBox = (collMsg->fEntering != 0);

        // If entering, check if ready to climb.  If not, register for eval so
        // we can check every frame
        if (fAvatarInBox)
        {
            DetectorLogSpecial("%s: Avatar entered ladder region", GetKeyName().c_str());

            if (IIsReadyToClimb())
                ITriggerSelf(collMsg->fOtherKey);
            else
                plgDispatch::Dispatch()->RegisterForExactType(plEvalMsg::Index(), GetKey());
        }
        else
        {
            DetectorLogSpecial("%s: Avatar exited ladder region", GetKeyName().c_str());

            plgDispatch::Dispatch()->UnRegisterForExactType(plEvalMsg::Index(), GetKey());
        }

        return true;
    }

    // Avatar is inside our detector box, so every frame we check if he's ready to climb 
    plEvalMsg* evalMsg = plEvalMsg::ConvertNoRef(msg);
    if (evalMsg)
    {
        if (IIsReadyToClimb())
            ITriggerSelf(plNetClientApp::GetInstance()->GetLocalPlayerKey());
        return true;
    }

    plNotifyMsg *notifyMsg = plNotifyMsg::ConvertNoRef(msg);
    if (notifyMsg)
    {
        if (notifyMsg->fID == kNotifyTrigger && fEnabled)
        {
            const plKey avPhysKey = notifyMsg->GetSender();
            EmitCommand(avPhysKey);
        }
        else if (notifyMsg->fID == kNotifyAvatarOnLadder)
        {
            DetectorLogSpecial("%s: Avatar mounted ladder", GetKeyName().c_str());
            fAvatarMounting = false;
        }

        return true;
    }

    plEnableMsg *enableMsg = plEnableMsg::ConvertNoRef(msg);
    if (enableMsg)
    {
        if (enableMsg->Cmd(plEnableMsg::kDisable))
            fEnabled = false;
        else if (enableMsg->Cmd(plEnableMsg::kEnable))
            fEnabled = true;
    }

    return plSingleModifier::MsgReceive(msg);
}

// EMITCOMMAND
void plAvLadderMod::EmitCommand(const plKey receiver)
{
    hsKeyedObject *object = receiver->ObjectIsLoaded();
    plSceneObject *SO = plSceneObject::ConvertNoRef(object);
    if(SO)
    {
        const plArmatureMod *constAvMod = (plArmatureMod*)SO->GetModifierByType(plArmatureMod::Index());
        if(constAvMod)
        {
            plAvBrainGeneric *curGenBrain = (plAvBrainGeneric *)constAvMod->FindBrainByClass(plAvBrainGeneric::Index());
            // *** warning; if there's more than one generic brain active, this will only look at the first
            bool alreadyOnLadder =  ( curGenBrain  && curGenBrain->GetType() == plAvBrainGeneric::kLadder );

            if( ! alreadyOnLadder)
            {
                plSceneObject *seekObj = GetTarget();
                plKey seekKey = seekObj->GetKey();      // this modifier's target is the seek object

                char *mountName, *dismountName, *traverseName;

                if(fGoingUp)
                {
                    mountName = "LadderUpOn";
                    dismountName = "LadderUpOff";
                    traverseName = "LadderUp";
                } else {
                    mountName = "LadderDownOn";
                    dismountName = "LadderDownOff";
                    traverseName = "LadderDown";
                }

                plAnimStageVec *v = new plAnimStageVec;

                plAnimStage *s1 = new plAnimStage(mountName,
                                                  0,
                                                  plAnimStage::kForwardAuto,
                                                  plAnimStage::kBackAuto,
                                                  plAnimStage::kAdvanceAuto,
                                                  plAnimStage::kRegressAuto,
                                                  0);
                if( ! fGoingUp)
                    s1->SetReverseOnIdle(true);
                v->push_back(s1);
                
                // if loops is zero, we don't need the traverse animation at all.
                if(fLoops)
                {
                    plAnimStage *s2 = new plAnimStage(traverseName,
                                                      0,
                                                      plAnimStage::kForwardKey,
                                                      plAnimStage::kBackKey,
                                                      plAnimStage::kAdvanceAuto,
                                                      plAnimStage::kRegressAuto,
                                                      fLoops - 1    // first loop is implied; zero loops means
                                                                    // play this anim once, 1 loop means "loop
                                                                    // once after reaching the end."
                                                      );
                    if( ! fGoingUp)
                        s2->SetReverseOnIdle(true);
                    v->push_back(s2);
                }
                plAnimStage *s3 = new plAnimStage(dismountName,
                                                  0,
                                                  plAnimStage::kForwardAuto,
                                                  plAnimStage::kBackAuto,
                                                  plAnimStage::kAdvanceAuto,
                                                  plAnimStage::kRegressAuto,
                                                  0);
                if( ! fGoingUp)
                    s3->SetReverseOnIdle(true);
                v->push_back(s3);

                plNotifyMsg* enterNotify = new plNotifyMsg(GetKey(), GetKey());
                enterNotify->fID = kNotifyAvatarOnLadder;

                uint32_t exitFlags = plAvBrainGeneric::kExitNormal;

                plAvBrainGeneric *ladBrain = new plAvBrainGeneric(v, enterNotify, nil, nil, exitFlags, plAvBrainGeneric::kDefaultFadeIn, 
                                                                  plAvBrainGeneric::kDefaultFadeOut, plAvBrainGeneric::kMoveRelative);
                ladBrain->SetType(plAvBrainGeneric::kLadder);
                ladBrain->SetReverseFBControlsOnRelease(!fGoingUp);

                plKey avKey = constAvMod->GetKey();

                // Very important that we dumb seek here. Otherwise you can run off the edge of a ladder, and seek will be helpless
                // until you hit the ground, at which point you have no hope of successfully seeking.
                plAvSeekMsg *seeker = new plAvSeekMsg(nil, avKey, seekKey, 1.0f, false);
                seeker->Send();
                plAvPushBrainMsg *brainer = new plAvPushBrainMsg(nil, avKey, ladBrain);
                brainer->Send();
            }
        }
    }
}

void plAvLadderMod::Read(hsStream *stream, hsResMgr *mgr)
{
    plSingleModifier::Read(stream, mgr);
    
    fType = stream->ReadLE32();
    fLoops = stream->ReadLE32();
    fGoingUp = stream->ReadBool();
    fEnabled = stream->ReadBool();
    fLadderView.fX = stream->ReadLEScalar();
    fLadderView.fY = stream->ReadLEScalar();
    fLadderView.fZ = stream->ReadLEScalar();
}

void plAvLadderMod::Write(hsStream *stream, hsResMgr *mgr)
{
    plSingleModifier::Write(stream, mgr);

    stream->WriteLE32(fType);
    stream->WriteLE32(fLoops);
    stream->WriteBool(fGoingUp);
    stream->WriteBool(fEnabled);
    stream->WriteLEScalar(fLadderView.fX);
    stream->WriteLEScalar(fLadderView.fY);
    stream->WriteLEScalar(fLadderView.fZ);
}

// true is up; false is down
bool plAvLadderMod::GetGoingUp() const
{
    return fGoingUp;
}

void plAvLadderMod::SetGoingUp(bool up)
{
    fGoingUp = up;
}

int plAvLadderMod::GetLoops() const
{
    return fLoops;
}

void plAvLadderMod::SetLoops(int loops)
{
    fLoops = loops;
}

int plAvLadderMod::GetType() const 
{
    return fType;
}

void plAvLadderMod::SetType(int type)
{
    if(type >= kNumOfTypeFields || type < 0)
    {
        hsStatusMessage("Invalid param to plAvLadderMod::SetType: defaulting to kBig");
        fType = kBig;
    } else {
        fType = type;
    }
}