Tooling

Source/Salty/World/WorldMapDefinition.cpp

@@ -0,0 +1,42 @@
+#include "World/WorldMapDefinition.h"
+
+// Direct-initialised from an explicit FName: copy-initialising from a string literal would need two
+// user-defined conversions (TCHAR* -> FName -> FPrimaryAssetType), which the language does not allow.
+const FPrimaryAssetType UWorldMapDefinition::AssetType(FName("WorldMap"));
+
+const FWorldMapLayer* UWorldMapDefinition::FindLayer(FName Id) const
+{
+	return Layers.FindByPredicate([Id](const FWorldMapLayer& Layer) { return Layer.Id == Id; });
+}
+
+const FWorldMapLayer* UWorldMapDefinition::ResolveDefaultLayer() const
+{
+	if (const FWorldMapLayer* Named = FindLayer(DefaultLayer))
+	{
+		return Named;
+	}
+	return Layers.Num() > 0 ? &Layers[0] : nullptr;
+}
+
+FName UWorldMapDefinition::NextLayerId(FName Id) const
+{
+	if (Layers.Num() == 0)
+	{
+		return NAME_None;
+	}
+	const int32 Index = Layers.IndexOfByPredicate([Id](const FWorldMapLayer& Layer) { return Layer.Id == Id; });
+	// An unknown id lands on the first layer rather than on nothing, so a stale name in a saved setting
+	// recovers on the next press instead of leaving the map blank.
+	return Layers[Index == INDEX_NONE ? 0 : (Index + 1) % Layers.Num()].Id;
+}
+
+TArray<FName> UWorldMapDefinition::GetLayerIds() const
+{
+	TArray<FName> Ids;
+	Ids.Reserve(Layers.Num());
+	for (const FWorldMapLayer& Layer : Layers)
+	{
+		Ids.Add(Layer.Id);
+	}
+	return Ids;
+}