static void DrawOperationBegin( Player player, CommandReader cmd, DrawOperation op ) {
// try to create instance of player's currently selected brush
// all command parameters are passed to the brush
IBrush brush = player.ConfigureBrush(cmd);
// MakeInstance returns null if there were problems with syntax, abort
if( brush == null ) return;
op.Brush = brush;
player.SelectionStart( op.ExpectedMarks, DrawOperationCallback, op, Permission.Draw );
player.Message( "{0}: Click or &H/Mark&S &f{1}&s blocks.",
op.Description, op.ExpectedMarks );
}
static void Fill3DHandler( Player player, CommandReader cmd ) {
Fill3DDrawOperation op = new Fill3DDrawOperation( player );
IBrush brush = player.ConfigureBrush(cmd);
if( brush == null ) return;
op.Brush = brush;
player.SelectionStart( 1, Fill3DCallback, op, Permission.Draw );
player.Message( "{0}: Click a block to start filling.", op.Description );
}