/// <summary>
/// Applied before SetSymbolVisiblity runs.
/// </summary>
internal static bool Prefix(KAnimControllerBase __instance, KAnimHashedString symbol,
bool is_visible)
{
bool changed = false;
var hidden = __instance.hiddenSymbols;
if (is_visible)
{
changed = hidden.Remove(symbol);
}
else if (!hidden.Contains(symbol))
{
hidden.Add(symbol);
// This is not called all that often and the hidden symbol list is usually
// quite small, so not worth changing to hash set
changed = true;
}
if (changed && __instance.curBuild != null)
{
__instance.UpdateHidden();
}
return(false);
}