Set brush class itorque?

#1 @Anna

I never tried collisions with tile layers, but to set a class to a t2dTileLayer instance in script, it's just the "usual" way to subclass. Here's an example taken from a tutorial

tdn.garagegames.com/wiki/TGB/Tutorials/The_Game_of_Life

function CaTutorialPart4::CreateTileLayers(%this)
{
    %tileCountX = %this.model.get_size_x();
    %tileCountY = %this.model.get_size_y();
    %tileSizeX = 4;
    %tileSizeY = 4;
    %this.WallTileLayer = new t2dTileLayer()
    {
       class = "TileLayerCaTutorialPart4";
    }; 
    %this.WallTileLayer.setUseMouseEvents( true );
    %this.WallTileLayer.createLayer( %tileCountX, %tileCountY, %tileSizeX, %tileSizeY ); 
    %this.WallTileLayer.setSize( %tileCountX * %tileSizeX, %tileCountY * %tileSizeY  );  
    %this.WallTileLayer.setGridActive( 1 ); 
    %this.WallTileLayer.setPosition( 0, 0 );  
    %this.getGlobalTileMap().addTileLayer( %this.WallTileLayer ); 
    
}

#2 @Anna - Stock iT2D does not support classes/data on individual tiles. As Pedro demonstrated, an entire t2dTileLayer can have a class. His example builds a tile layer dynamically from script.

In the editor, you select the tile layer then expand the Scripting section under the Edit tab. From there, you can type in the class. For example, you can set a t2dTileLayer's class to "board". From script, you can then expand the class:

function Board::onLevelLoaded(%this, %scenegraph)
{
   // Perform custom code on tile layer when level is loaded
}

There is code to perform collision on a per-tile basis, but it is costly on the CPU.