CodeGenFile generateSystem(string contextName, ComponentData data) { var optionalContextName = data.GetContextNames().Length > 1 ? contextName : string.Empty; var componentName = data.GetTypeName().ToComponentName(_ignoreNamespacesConfig.ignoreNamespaces); var memberData = data.GetMemberData(); var methodArgs = ", " + (memberData.Length == 0 ? data.GetUniquePrefix() + componentName : getMethodArgs(memberData)); var eventTypeSuffix = string.Empty; var filter = string.Empty; if (data.GetMemberData().Length == 0) { switch (data.GetEventType()) { case EventType.Added: eventTypeSuffix = "Added"; methodArgs = string.Empty; filter = "entity." + data.GetUniquePrefix() + componentName; break; case EventType.Removed: eventTypeSuffix = "Removed"; methodArgs = string.Empty; filter = "!entity." + data.GetUniquePrefix() + componentName; break; case EventType.AddedOrRemoved: filter = "true"; break; } } else { switch (data.GetEventType()) { case EventType.Added: filter = "entity.has" + componentName; break; case EventType.Removed: eventTypeSuffix = "Removed"; methodArgs = string.Empty; filter = "!entity.has" + componentName; break; case EventType.AddedOrRemoved: eventTypeSuffix = "AddedOrRemoved"; filter = "true"; break; } } if (data.GetEventBindToEntity()) { if (filter == "true") { filter = "entity.has${OptionalContextName}${ComponentName}Listener"; } else { filter += " && entity.has${OptionalContextName}${ComponentName}Listener"; } } filter = filter .Replace("${OptionalContextName}", optionalContextName) .Replace("${ComponentName}", componentName); var cachedAccess = memberData.Length == 0 ? "var " + data.GetUniquePrefix() + componentName + " = e." + data.GetUniquePrefix() + componentName + ";" : "var component = e." + componentName.LowercaseFirst() + ";"; var template = data.GetEventBindToEntity() ? ENTITY_SYSTEM_TEMPLATE : SYSTEM_TEMPLATE; var fileContent = template .Replace("${ContextName}", contextName) .Replace("${contextName}", contextName.LowercaseFirst()) .Replace("${OptionalContextName}", optionalContextName) .Replace("${optionalContextName}", optionalContextName == string.Empty ? string.Empty : optionalContextName.LowercaseFirst()) .Replace("${ComponentName}", componentName) .Replace("${contextDependentComponentName}", optionalContextName == string.Empty ? componentName.LowercaseFirst() : componentName) .Replace("${GroupEvent}", data.GetEventType().ToString()) .Replace("${filter}", filter) .Replace("${cachedAccess}", cachedAccess) .Replace("${EventType}", eventTypeSuffix) .Replace("${methodArgs}", methodArgs); return(new CodeGenFile( "Events" + Path.DirectorySeparatorChar + "Systems" + Path.DirectorySeparatorChar + optionalContextName + componentName + "EventSystem.cs", fileContent, GetType().FullName )); }