Game Development Community

can anyone help on How to change script objects from c++ code?

by David Stoesz · in Torque 3D Professional · 08/13/2009 (12:51 pm) · 5 replies

Hello, I have this code in my playgui.gui file

new GuiCrossHairHud(Reticle) {
canSaveDynamicFields = "0";
isContainer = "0";
Profile = "GuiDefaultProfile";
HorizSizing = "center";
VertSizing = "center";
position = "496 368";
Extent = "32 32";
MinExtent = "8 8";
canSave = "1";
Visible = "1";
tooltipprofile = "GuiToolTipProfile";
hovertime = "1000";
bitmap = "art/gui/SelectionHud/blank.png";
wrap = "0";
damageFillColor = "0 1 0 1";
damageFrameColor = "1 0.6 0 1";
damageRect = "50 4";
damageOffset = "0 10";
};


I need to change the bitmap from c++ code in the game.

Or alternatively if someone can tell me how to create the gui bitmap all in the c++ code, that would work too.



Just to describe what i am doing: I have code that determines what I am pointing at in order to make some changes on the Hud. I also want to change this bitmap to a speach bubble for NPCs I can talk to and to a hand for objects I can interact with. The code works for determining what I am looking at, but I have not figured out how to change this gui bitmap.

Any help would be appreciated.
NextNext Thread
PrevPrevious Thread
More from Torque 3D Professional


Torque Owner Ryan Mounts
CornerstoneViz
#1
08/13/2009 (2:07 pm)
There are several ways you could do this. I suggest something along these lines:

In your C++ code, after you have determined what you are looking at, call a console function to change the bitmap for you.

// varType is a char* that describes what you are pointing at.
// In this example, varType is "NCP", "Object", or "Blank"

if(Con::isFunction("changeHudBmp")
   Con::executef("changeHudBmp", varType);

Then somewhere in script define the "changeHudBmp" function.

$HudBmp::NCP    = "art/gui/SelectionHud/NCP.png";
$HudBmp::Object = "art/gui/SelectionHud/Object.png";
$HudBmp::Blank  = "art/gui/SelectionHud/blank.png";

function changeHudBmp(%type)
{
   switch$(%type)
   {
      case "NCP":     Reticle.bitmap = $HudBmp::NCP;
      case "Object":  Reticle.bitmap = $HudBmp::Object;
      case "Blank":   Reticle.bitmap = $HudBmp::Blank;
      default:        Reticle.bitmap = $HudBmp::Blank;
   }
}

Torque 3D Owner David Stoesz
#2
08/13/2009 (2:11 pm)
Hey Ryan, Thanks! I knew there was an easy way to do this, but couldn't find a reference to it since most examples I found were entirely in script or c++.

Torque Owner Ryan Mounts
CornerstoneViz
#3
08/13/2009 (2:15 pm)
No problem, David. Doesn't look like you can assign global variables like I showed earlier, so I changed it to a switch statement like above. You could replace the entire switch statement with:

eval("Reticle.bitmap = $HudBmp::" @ %type @ ";");

But that just looks nasty!

Associate Konrad Kiss
Bitgap Games
#4
08/15/2009 (8:45 am)
Another possibility is to change the field through setField:
GuiCrossHairHud * reticle = dynamic_cast<GuiCrossHairHud*>(Sim::findObject("Reticle"));
   if (reticle)
      reticle->setField("bitmap", "art/gui/SelectionHud/notblank.png");

Or, you could set the bitmap like this as well:
GuiCrossHairHud * reticle = dynamic_cast<GuiCrossHairHud*>(Sim::findObject("Reticle"));
   if (reticle) {
      const char *bmpFileName = "art/gui/SelectionHud/notblank.png";
      reticle->setBitmap(bmpFileName);
   }

There are many choices. The last one is probably the fastest though. I haven't verified the code, but I hope it works fine.

Torque 3D Owner David Stoesz
#5
08/20/2009 (12:40 am)
Konrad,
I just wanted to confirm that your code worked great, exactly what I needed. Thank you very much.