/// <summary>
/// If the <paramref name="p_entity"/> has a <see cref="NavigationModifier"/> component, then the fact that he has moved involves that the
/// <see cref="NavigationGraph"/> layout is no more valid. <see cref="NavigationLink"/> must be recomputed to take into account the change.
/// </summary>
///
/// <param name="p_newNavigationNode">
/// The next <see cref="NavigationNode"/> where the <paramref name="p_entity"/> will be.
/// This value can be null, meaning that the <paramref name="p_entity"/>"s <see cref="NavigationModifier"/> component has been detached.
/// </param>
public static void resolveNavigationObstacleAlterations(NavigationEngine p_navigationEngine, Entity p_entity, NavigationNode p_oldNavigationNode, NavigationNode p_newNavigationNode)
{
if (p_oldNavigationNode != p_newNavigationNode)
{
NavigationModifier l_entityNavigationModifier = EntityComponent.get_component <NavigationModifier>(p_entity);
if (l_entityNavigationModifier != null && l_entityNavigationModifier.NavigationModifierData.IsObstacle)
{
if (p_newNavigationNode != null)
{
if (p_oldNavigationNode != null)
{
// We restore p_oldNavigationNode NavigationLinks only if there is no more NavigationModifier.Obstacle
if (!EntityQuery.isThereAtLeastOfComponentOfType <NavigationModifier>(ref p_navigationEngine.EntitiesIndexedByNavigationNodes, p_oldNavigationNode, NavigationModifier.IsObstacle))
{
NavigationLinkAlteration.restoreNavigationLinksFromSnapshot(NavigationGraphContainer.UniqueNavigationGraph, NavigationLinkAlteration.ENavigationLinkAlterationMethod.TO,
p_oldNavigationNode);
}
}
NavigationLinkAlteration.removeNavigationLinks(NavigationGraphContainer.UniqueNavigationGraph, NavigationLinkAlteration.ENavigationLinkAlterationMethod.TO,
p_newNavigationNode);
}
else
{
// We restore p_oldNavigationNode NavigationLinks only if there is no more NavigationModifier.Obstacle
if (!EntityQuery.isThereAtLeastOfComponentOfType <NavigationModifier>(ref p_navigationEngine.EntitiesIndexedByNavigationNodes, p_oldNavigationNode, NavigationModifier.IsObstacle))
{
NavigationLinkAlteration.restoreNavigationLinksFromSnapshot(NavigationGraphContainer.UniqueNavigationGraph, NavigationLinkAlteration.ENavigationLinkAlterationMethod.TO,
p_oldNavigationNode);
}
}
}
}
}
public override void Initialize(Entity p_entity, RuntimeObjectRootComponent p_runtimeObjectRootComponent)
{
NavigationModifier l_navigationModifier = NavigationModifier.alloc(ref NavigationModifierData);
EntityComponent.add_component(p_entity, l_navigationModifier);
}
