C++ StaticSprite2D::SetHotSpot方法代码示例

void TileMapLayer2D::SetObjectGroup(const TmxObjectGroup2D* objectGroup)
{
    objectGroup_ = objectGroup;

    TmxFile2D* tmxFile = objectGroup->GetTmxFile();
    nodes_.Resize(objectGroup->GetNumObjects());

    for (unsigned i = 0; i < objectGroup->GetNumObjects(); ++i)
    {
        const TileMapObject2D* object = objectGroup->GetObject(i);

        // Create dummy node for all object
        SharedPtr<Node> objectNode(GetNode()->CreateTemporaryChild("Object"));
        objectNode->SetPosition(object->GetPosition());

        // If object is tile, create static sprite component
        if (object->GetObjectType() == OT_TILE && object->GetTileGid() && object->GetTileSprite())
        {
            StaticSprite2D* staticSprite = objectNode->CreateComponent<StaticSprite2D>();
            staticSprite->SetSprite(object->GetTileSprite());
            staticSprite->SetLayer(drawOrder_);
            staticSprite->SetOrderInLayer((int)((10.0f - object->GetPosition().y_) * 100));

            if (tmxFile->GetInfo().orientation_ == O_ISOMETRIC)
            {
                staticSprite->SetUseHotSpot(true);
                staticSprite->SetHotSpot(Vector2(0.5f, 0.0f));
            }
        }

        nodes_[i] = objectNode;
    }
}

//.........这里部分代码省略.........

    for (unsigned i = 0; i < numTracks_; ++i)
    {
        trackNodeInfos_[i].worldSpace = false;
        
        const AnimationTrack2D& track = animation_->GetTrack(i);        
        const Vector<AnimationKeyFrame2D>& keyFrames = track.keyFrames_;

        // Time out of range
        if (time < keyFrames[0].time_ || time > keyFrames.Back().time_)
            trackNodeInfos_[i].value.enabled_ = false;
        else
        {
            unsigned index = keyFrames.Size() - 1;
            for (unsigned j = 0; j < keyFrames.Size() - 1; ++j)
            {
                if (time <= keyFrames[j + 1].time_)
                {
                    index = j;
                    break;
                }
            }

            const AnimationKeyFrame2D& currKey = keyFrames[index];
            AnimationKeyFrame2D& value = trackNodeInfos_[i].value;

            value.enabled_ = currKey.enabled_;
            value.parent_ = currKey.parent_;

            if (index < keyFrames.Size() - 1)
            {
                const AnimationKeyFrame2D& nextKey = keyFrames[index + 1];
                float t = (time - currKey.time_)  / (nextKey.time_ - currKey.time_);
                value.transform_ = currKey.transform_.Lerp(nextKey.transform_, t, currKey.spin_);

                if (trackNodeInfos_[i].hasSprite)
                    value.alpha_ = Urho3D::Lerp(currKey.alpha_, nextKey.alpha_, t);
            }
            else
            {
                value.transform_ = currKey.transform_;

                if (trackNodeInfos_[i].hasSprite)
                    value.alpha_ = currKey.alpha_;
            }

            if (trackNodeInfos_[i].hasSprite)
            {
                value.zIndex_ = currKey.zIndex_;
                value.sprite_ = currKey.sprite_;
                value.useHotSpot_ = currKey.useHotSpot_;
                value.hotSpot_ = currKey.hotSpot_;
            }
        }
    }

    for (unsigned i = 0; i < numTracks_; ++i)
    {
        Node* node = trackNodes_[i];
        TrackNodeInfo& nodeInfo = trackNodeInfos_[i];

        if (!nodeInfo.value.enabled_)
            node->SetEnabled(false);
        else
        {
            node->SetEnabled(true);

            // Calculate world transform.
            CalculateTimelineWorldTransform(i);

            // Update node's transform
            Vector2 position = nodeInfo.value.transform_.position_ * PIXEL_SIZE;
            if (flipX_)
                position.x_ = -position.x_;
            if (flipY_)
                position.y_ = -position.y_;
            node->SetPosition(position);

            float angle = nodeInfo.value.transform_.angle_;
            if (flipX_ != flipY_)
                angle = -angle;
            node->SetRotation(angle);
            node->SetScale(nodeInfo.value.transform_.scale_);

            if (nodeInfo.hasSprite)
            {
                StaticSprite2D* staticSprite = node->GetComponent<StaticSprite2D>();
                if (staticSprite)
                {
                    staticSprite->SetOrderInLayer(orderInLayer_ + nodeInfo.value.zIndex_);
                    staticSprite->SetSprite(nodeInfo.value.sprite_);
                    staticSprite->SetUseHotSpot(nodeInfo.value.useHotSpot_);
                    staticSprite->SetHotSpot(nodeInfo.value.hotSpot_);
                }
            }
        }
    }

    MarkForUpdate();
}

void AnimatedSprite2D::UpdateAnimation(float timeStep)
{
    if (!animation_)
        return;

    currentTime_ += timeStep * speed_;

    float time;
    float animtationLength = animation_->GetLength();

    if (looped_)
    {
        time = fmodf(currentTime_, animtationLength);
        if (time < 0.0f)
            time += animation_->GetLength();
    }
    else
        time = Clamp(currentTime_, 0.0f, animtationLength);

    // Update timeline's local transform
    for (unsigned i = 0; i < timelineTransformInfos_.Size(); ++i)
    {
        const Timeline2D& timeline = animation_->GetTimeline(i);

        const Vector<TimelineKey2D>& objectKeys = timeline.timelineKeys_;
        unsigned index = objectKeys.Size() - 1;
        for (unsigned j = 0; j < objectKeys.Size() - 1; ++j)
        {
            if (time <= objectKeys[j + 1].time_)
            {
                index = j;
                break;
            }
        }

        const TimelineKey2D& currKey = objectKeys[index];
        if (index < objectKeys.Size() - 1)
        {
            const TimelineKey2D& nextKey = objectKeys[index + 1];
            float t = (time - currKey.time_)  / (nextKey.time_ - currKey.time_);
            timelineTransformInfos_[i].worldSpace_ = false;
            timelineTransformInfos_[i].transform_ = currKey.transform_.Lerp(nextKey.transform_, t, currKey.spin_);
            // Update sprite's sprite and hot spot and color
            Node* timelineNode = timelineNodes_[i];
            if (timelineNode)
            {
                StaticSprite2D* staticSprite = timelineNode->GetComponent<StaticSprite2D>();
                if (staticSprite)
                {
                    staticSprite->SetSprite(currKey.sprite_);
                    staticSprite->SetHotSpot(currKey.hotSpot_.Lerp(nextKey.hotSpot_, t));
                    float alpha = Lerp(currKey.alpha_, nextKey.alpha_, t);
                    staticSprite->SetColor(Color(color_.r_, color_.g_, color_.b_, color_.a_ * alpha));
                }
            }
        }
        else
        {
            timelineTransformInfos_[i].worldSpace_ = false;
            timelineTransformInfos_[i].transform_ = currKey.transform_;
            // Update sprite's sprite and hot spot and color
            Node* timelineNode = timelineNodes_[i];
            if (timelineNode)
            {
                StaticSprite2D* staticSprite = timelineNode->GetComponent<StaticSprite2D>();
                if (staticSprite)
                {
                    staticSprite->SetSprite(currKey.sprite_);
                    staticSprite->SetHotSpot(currKey.hotSpot_);
                    staticSprite->SetColor(Color(color_.r_, color_.g_, color_.b_, color_.a_ * currKey.alpha_));
                }
            }
        }
    }

    // Calculate timeline world transform.
    for (unsigned i = 0; i < timelineTransformInfos_.Size(); ++i)
        CalculateTimelineWorldTransform(i);

    // Get mainline key
    const Vector<MainlineKey2D>& mainlineKeys = animation_->GetMainlineKeys();
    const MainlineKey2D* mainlineKey = 0;
    for (unsigned i = 1; i < mainlineKeys.Size(); ++i)
    {
        if (time < mainlineKeys[i].time_)
        {
            mainlineKey = &mainlineKeys[i - 1];
            break;
        }
    }

    if (!mainlineKey)
        mainlineKey = &mainlineKeys.Back();

    // Update node's transform and sprite's z order
    for (unsigned i = 0; i < timelineNodes_.Size(); ++i)
    {
        Node* timelineNode = timelineNodes_[i];
        if (!timelineNode)
            continue;
//.........这里部分代码省略.........