Useful - Generic Functions

Bored waiting on an engine compile so I thought id share a few generic tilelayer functions I created.

// Clears a Column in the TileLayer
void t2dTileLayer::clearLayerColumn(const U32 tileX, const U32 tileY)
{
	if ( mppTileObjectArray )
	{
		// Delete All Tiles in the Column
		for ( U32 n = tileX; n < (mTileCountX * mTileCountY); (n += mTileCountX) )
		{	
			// Is there a tile here
			if ( mppTileObjectArray[n] )
			{
				// Yes, so delete the Tile Node
				mpTileMap2DManager->deleteTileNode( mppTileObjectArray[n]->mpTileNode );
				// Delete the Physics.
				delete mppTileObjectArray[n]->mpPhysics;
				// Dele the Tile Object.
				delete mppTileObjectArray[n];
				// Reset the Tile Object.
				mppTileObjectArray[n] = NULL;
			}
		}
	}
}

// Count Active Tiles in a TileLayer Column
U32 t2dTileLayer::countLayerColumnTiles(const U32 tileX, const U32 tileY)
{
	U32 tileCount = 0;

	if ( mppTileObjectArray )
	{
		// Count Tiles in the Tile Layer Column
		for ( U32 n = tileX; n < (mTileCountX * mTileCountY); (n += mTileCountX) )
		{
			if ( mppTileObjectArray[n] )
			{
				tileCount++;
			}
		}
	}
	return ( tileCount );
}

// Counts Active tiles in a TileLayer
U32 t2dTileLayer::countLayerTiles()
{
	// Tile Count
	U32 tileCount = 0;

	// Is there an active Tile Array?
	if ( mppTileObjectArray )
	{
		for(U32 i = 0; i < (mTileCountX * mTileCountY); i++)
		{
			if(mppTileObjectArray[i])
			{
				tileCount++;
			}
		}
	}
	return ( tileCount );
}