RPG type "floating text"

[christianclavet]

Hi, done this function recently and used the Irrlicht animator to do most of the work. This was really easy to do and perhaps would like to do the same...

Here is the code:

Code: Select all

// Note: smgr = scene manager pointer is needed for manipulating and creating the elements 
// Note: guienv = guienvironment pointer is needed for the font. You can also define your own font instead.
// Create and animate a text over the object head
void createTextAnim(scene::ISceneNode* node, core::stringw text=L"", video::SColor color=video::SColor(255,255,0,0), u32 duration=2000, dimension2d<f32> size=dimension2d<f32>(18,10));
{
    const wchar_t * ttext = L" ";
    
    if (!text.empty())
        ttext=text.c_str();
 
    vector3df start = node->getAbsolutePosition();
    
    f32 height = node->getBoundingBox().getExtent().Y*getScale().Y;
    
    start.Y+=height-30;
    vector3df end = start;
    end.Y+=height+50;
 
    IBillboardTextSceneNode * nodetext = smgr->addBillboardTextSceneNode(guienv->getBuildInFont(),ttext,smgr->getRootSceneNode(),size,start,-1,color,color);
    
    scene::ISceneNodeAnimator * anim = smgr->createDeleteAnimator(duration);
    scene::ISceneNodeAnimator * anim2 = smgr->createFlyStraightAnimator(start,end,duration);
    if (nodetext && anim)
    {   
        nodetext->addAnimator(anim);
        nodetext->addAnimator(anim2);
    }
}

This will measure the node you use and create a animated text billboard that goes up and delete itself.

Here is an example on how to use it:

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createTextAnim(mynode, L"Miss",video::SColor(255,240,120,0),3000,dimension2d<f32>(12,8));

Here is a screenshot of what it does visually:

[thanhle]

Very useful!
Will use it for my project .
Well done mate.

[Mars_999]

Do you have a complete usage example of using this cool code? I am confused how to setup this code? getNode() no smgr to access it? I mean is this dropped into an overload class?

Ok here is what I put in to make it work but the text isnt' above the nodes position all the time sometimes it's off to the side?

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void CreateTextAnim(irr::scene::ISceneNode* node,
                    irr::core::stringw text = L"", 
                    irr::video::SColor color = irr::video::SColor(255, 255, 0, 0), 
                    irr::u32 duration = 2000, 
                    irr::core::dimension2d<f32> size = irr::core::dimension2d<f32>(18, 10))
{
    // Note: smgr = scene manager pointer is needed for manipulating and creating the elements 
    // Note: guienv = guienvironment pointer is needed for the font. You can also define your own font instead.
    // Create and animate a text over the object head
    //MYNODE->createTextAnim(L"Miss", video::SColor(255, 240, 120, 0), 3000, dimension2d<f32>(12, 8));
 
    NX::App& app = NX::App::Get();
 
    const wchar_t* ttext = L" ";
 
    if(!text.empty())
        ttext = text.c_str();
 
    irr::core::vector3df start = node->getAbsolutePosition();
    //irr::core::vector3df start = node->getPosition(); this places text above current node's position
 
    irr::f32 height = node->getBoundingBox().getExtent().Y * node->getScale().Y;
 
    start.Y += height - 30;
    irr::core::vector3df end = start;
    end.Y += height + 50;
 
    irr::scene::IBillboardTextSceneNode* nodetext = app.GetDevice()->getSceneManager()->addBillboardTextSceneNode(app.GetDevice()->getGUIEnvironment()->getBuiltInFont(), 
                ttext, node, size, start, -1, color, color);
 
    irr::scene::ISceneNodeAnimator* anim = app.GetDevice()->getSceneManager()->createDeleteAnimator(duration);
    irr::scene::ISceneNodeAnimator* anim2 = app.GetDevice()->getSceneManager()->createFlyStraightAnimator(start, end, duration);
    if(nodetext && anim)
    {
        nodetext->addAnimator(anim);
        nodetext->addAnimator(anim2);
    }
}
 

whoops I found it!

irr::core::vector3df start = node->getPosition(); use getPosition()!!

[christianclavet]

Oups! Your are right! Sorry! getNode() is from my own code and it not there! (Was in my APP class).

I edited the first post so that you give YOUR node as a parameter.