fixes #19

The "agents_on" attributes for road is not used anymore in the road skill, so I removed it. You can use "all_agents" to get the list of agents on the road. I removed as well the "unregister" in the road skill that was deprecated (now, unregister has to be used in the driving skill).

gama.extension.traffic/src/gama/extension/traffic/driving/RoadSkill.java

@@ -46,11 +46,6 @@
  * The Class RoadSkill.
  */
 @vars ({ @variable (
-		name = RoadSkill.AGENTS_ON,
-		type = IType.LIST,
-		of = IType.LIST,
-		doc = @doc ("for each lane of the road, the list of agents for each segment")),
-		@variable (
 				name = RoadSkill.ALL_AGENTS,
 				type = IType.LIST,
 				of = IType.AGENT,
@@ -116,9 +111,6 @@ public static class NewRoadSkill extends RoadSkill {}
 	// TODO: rename these two lists?
 	public static final String ALL_AGENTS = "all_agents";
 
-	/** The Constant AGENTS_ON. */
-	public static final String AGENTS_ON = "agents_on";
-
 	/** The Constant SOURCE_NODE. */
 	public static final String SOURCE_NODE = "source_node";
 
@@ -147,31 +139,7 @@ public static class NewRoadSkill extends RoadSkill {}
 	/** The Constant VEHICLE_ORDERING. */
 	public static final String VEHICLE_ORDERING = "vehicle_ordering";
 
-	/**
-	 * Gets the agents on.
-	 *
-	 * @param agent
-	 *            the agent
-	 * @return the agents on
-	 */
-	@getter (AGENTS_ON)
-	public static List getAgentsOn(final IAgent agent) {
-		return (List) agent.getAttribute(AGENTS_ON);
-	}
-
-	/**
-	 * Sets the agents on.
-	 *
-	 * @param agent
-	 *            the agent
-	 * @param agents
-	 *            the agents
-	 */
-	@setter (AGENTS_ON)
-	public static void setAgentsOn(final IAgent agent, final List agents) {
-		agent.setAttribute(AGENTS_ON, agents);
-	}
-
+
 	/**
 	 * Gets the agents.
 	 *
@@ -544,28 +512,4 @@ public static boolean register(final IScope scope, final IAgent vehicle, final I
 		return true;
 	}
 
-	/**
-	 * Prim unregister.
-	 *
-	 * @param scope
-	 *            the scope
-	 * @throws GamaRuntimeException
-	 *             the gama runtime exception
-	 */
-	@action (
-			name = "unregister",
-			args = { @arg (
-					name = "agent",
-					type = IType.AGENT,
-					optional = false,
-					doc = @doc ("the agent to unregister on the road.")) },
-			doc = @doc (
-					value = "unregister the agent on the road",
-					examples = { @example ("do unregister agent: the_driver;") },
-					deprecated = "use the `unregister` action in advanced_driving skill instead"))
-	@Deprecated
-	public boolean primUnregister(final IScope scope) throws GamaRuntimeException {
-		IAgent driver = (IAgent) scope.getArg("agent", IType.AGENT);
-		return DrivingSkill.unregister(scope, driver);
-	}
 }