/// <summary>
/// Reads filter definitions from a node and adds them into the manager.
/// </summary>
/// <param name="node">Node to get data from.</param>
/// <param name="isCommonTag">Specifies if node describes CCK native categories.</param>
void AddFiltersFromConfig(ConfigNode node, bool isCommonTag)
{
foreach (var item in node.GetNodes("Item"))
{
var filterItem = new PartsFilter(
item.GetValue("tag"), item.GetValue("name"),
item.GetValue("normalIcon"), item.GetValue("selectedIcon"),
isCommonTag);
AddFilter(filterItem);
}
}
/// <summary>
/// Adds filter for a tag if one doesn't exist. In case of there is a filter with the same
/// tag a better candidate will be chosen.
/// </summary>
/// <remarks>
/// When a filter for an existing tag is being added a decision is made on which filter to
/// keep:
/// <list type="bullet">
/// <item>Native (a.k.a. "common") CCK filter is always favored over a custom filter.</item>
/// <item>
/// Custom filters are compared by their title and the one which is lexicographically "less"
/// (case-sensitive) will be kept, and the other one dropped.
/// </item>
/// </list>
/// </remarks>
/// <param name="newFilter">Filter description to add.</param>
void AddFilter(PartsFilter newFilter)
{
var existingFilter = filters.FirstOrDefault(x => x.tag == newFilter.tag);
if (existingFilter != null && newFilter.isCommon)
{
// Normally never happens.
Debug.LogErrorFormat("Duplicated common filter: {0}. Ignoring.", tag);
}
else if (existingFilter == null)
{
Debug.LogFormat("Create new CCK filter: {0}", newFilter);
filters.Add(newFilter);
}
else if (existingFilter != null)
{
// A very simple tie-break approach. Main idea here is being consistent, i.e. always
// showing the same category on game load.
var tieBreakValue = string.Compare(
newFilter.title, existingFilter.title, StringComparison.Ordinal);
if (!existingFilter.isCommon && tieBreakValue < 0)
{
Debug.LogWarningFormat(
"Replacing existing CCK filter with a new one: existing=[{0}], new=[{1}]",
existingFilter, newFilter);
filters.Remove(existingFilter);
filters.Add(newFilter);
}
else
{
Debug.LogWarningFormat("Ignoring new CCK filter in favor of the existing one:"
+ " existing=[{0}], new=[{1}]",
existingFilter, newFilter);
}
}
}
