package org.graphstream.gama.extension.sender;

import msi.gama.precompiler.ISymbolKind;
import msi.gama.precompiler.GamlAnnotations.facet;
import msi.gama.precompiler.GamlAnnotations.facets;
import msi.gama.precompiler.GamlAnnotations.inside;
import msi.gama.precompiler.GamlAnnotations.symbol;
import msi.gama.runtime.IScope;
import msi.gama.runtime.exceptions.GamaRuntimeException;
import msi.gaml.descriptions.IDescription;
import msi.gaml.expressions.IExpression;
import msi.gaml.statements.AbstractStatement;
import msi.gaml.statements.IStatement;
import msi.gaml.types.IType;

import org.graphstream.gama.extension.GSManager;
import org.graphstream.gama.extension.IKeywordGSAdditional;


@symbol(name = IKeywordGSAdditional.STEP, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
@inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SINGLE_STATEMENT })
@facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
		 @facet(name = IKeywordGSAdditional.STEP_NUMBER, type = IType.INT, optional = false)})
public class StepStatement extends AbstractStatement implements IStatement{
	
	final IExpression senderid;
	final IExpression step_number;
	
	public StepStatement(IDescription desc) {
		super(desc);
		senderid = getFacet(IKeywordGSAdditional.SENDERID);
		step_number = getFacet(IKeywordGSAdditional.STEP_NUMBER);
	}

	@Override
	protected Object privateExecuteIn(IScope scope) throws GamaRuntimeException {
		String senderId = (String)(senderid.value(scope));
		int step =(Integer)(step_number.value(scope));
		GSSender sender = GSManager.getSender(senderId);
		sender.sendStepBegins(step);
		return null;
	}

	
}
Add the 'step' command