Onclick event

[Elmar]

I want to write the program as follow:

To create virtual walk on the scene. (It's i can) and to create onclick event on the meshes in the same scene. I want that there are done some works when i click on the mesh.

 

What can you advice me?

 

P.S. When i did visualization before there didn't display mouse.

[ZioRed]

I am working on this for my own GUI manager and other stuff, what I'm doing is initializing a key/value pair array (key=specific mesh ID, value=click callback), then calling CameraPick and finally calling the callback matching the picked entity mesh ID on the array.

 

I don't know what should be the correct C++ code for this, since I work on C#.

[Elmar]

But how can i do this with C++? Who know?

[DWORD]

You can do something like this:

 

Mouse mymouse;
Camera mycam;
Pick mypick;
Entity myent;

mycam.Create();

if(mymouse.IsDown())
{
       if(mycam.GetPick(mypick,Vec3(mymouse.GetX(),mymouse.GetY(),1000)))
{
              //Do something when the mesh GetPicked
              myent = mypick.entity;
              myent.SetColor(Vec4(1,0,0,0));
       }
}

[Elmar]

How i can do so that, mouse is display? I create controller without displaying mouse..

[Elmar]

You can do something like this:

 

Mouse mymouse;
Camera mycam;
Pick mypick;
Entity myent;

mycam.Create();

if(mymouse.IsDown())
{
       if(mycam.GetPick(mypick,Vec3(mymouse.GetX(),mymouse.GetY(),1000)))
{
              //Do something when the mesh GetPicked
              myent = mypick.entity;
              myent.SetColor(Vec4(1,0,0,0));
       }
}

 

There are occuries error. GetPick and Setcolor functions are not found. What is the problem?

[ZioRed]

That is the code using LEO objects

[Elmar]

What are equivalent functions in the engine.h?

[ZioRed]

TCamera mycam = CreateCamera();
TPick mypick;
TEntity myent;

if (MouseDown())
{
       if (CameraPick(mypick, mycam, Vec3(MouseX(),MouseY(),1000)))
       {
              //Do something when the mesh GetPicked
              myent = mypick.entity;
              EntityColor(myent, Vec4(1,0,0,0));
       }
}

 

To know what entity has been picked you can check a key previously stored with GetEntityKey(). I would filter the CameraPick for a specific CollisionType which you need (you can also specify a pickfilter callback for more advanced filtering).

[AggrorJorn]

With Lua you can do this:

http://leadwerks.com/werkspace/index.php?/topic/1817-pick-an-object/page__p__16575entry16575

[DWORD]

How i can do so that, mouse is display? I create controller without displaying mouse..

 

Controller isn't a input manager, a controller is an Entity. You doesn't need to create a mouse in C/engine.h just use the mouse functions. The mouse that the engine uses is the Windows default mouse, but if you want a custom icon you can draw a image at the same position as the mouse and hide the windows mouse(HideMouse() using engine.h).

 

Sorry about my english.

[Elmar]

Now my problem is connected with functions. Which functions can i use for selecting model and creating onclick select?

[DWORD]

Now my problem is connected with functions. Which functions can i use for selecting model and creating onclick select?

 

TCamera mycam = CreateCamera();
TPick mypick;
TEntity myent;

if (MouseDown(1))
{
       if (CameraPick(&mypick, mycam, Vec3(MouseX(),MouseY(),1000)))
       {
              //Do something when the mesh GetPicked
              EntityColor(mypick.entity, Vec4(1,0,0,0));
       }
}

 

To know what entity has been picked you can check a key previously stored with GetEntityKey(). I would filter the CameraPick for a specific CollisionType which you need (you can also specify a pickfilter callback for more advanced filtering).

 

But like ZioRed said you need to identify your mesh/model with GetEntityKey()(or myent.GetKey() in LEO) or your entire scene will be selectable, in other words if you have 2 diferent models in the same scene they will be the same (like a Wall and a Soldier). You can set the EntityKey youself if you want.

[ZioRed]

In my game I have an array of characters which have a slot number and a mesh in its properties, so in the selection screen I initialize the characters meshes and set the relative slot number (SetEntitiKey(characterMesh, "slot", slot_number)), so after the pick call I check the "slot" key of the entity to know what character has been clicked (I set mouse visible for that).

[Elmar]

I don't enter my models with code(I do load from .sbx file). I gather my models in the scene and I only display my scene with code. Is that possible to pick that meshs? If yes, how?

 

Thanks

[ZioRed]

I don't know what you are doing or what you want to do, I only explained a scenario sample of handling click on a mesh

 

There's no difference about adding the models at runtime or in the editor. If you add them in the editor then you can check "name" with GetEntityKey since you should know what are the names or however you can use LUA scripting for your clickable models in which are set a custom property which you will check against with GetEntityKey.

[AggrorJorn]

Elmar,

 

1) Make a scene in the editor with just some terrain and a few oilbarrels in it.

2) Make a program from scratch that loads your scene correctly.

3) Add some movement via a character controller.

4) Use the code that Ziored proposed, and place it in the main loop.

5) Every time you are near an object and you click on it, it turns red.

[Elmar]

Elmar,

 

1) Make a scene in the editor with just some terrain and a few oilbarrels in it.

2) Make a program from scratch that loads your scene correctly.

3) Add some movement via a character controller.

4) Use the code that Ziored proposed, and place it in the main loop.

5) Every time you are near an object and you click on it, it turns red.

 

Thanks a lot. I did as you say.