private InstantiationContext(InstantiationContext parentContext, int sequenceNumber)
{
_random = parentContext._random;
_logger = parentContext._logger;
_insertionEntityProperties = parentContext._insertionEntityProperties;
_parentContext = parentContext;
ID = parentContext.ID;
SequenceNumber = sequenceNumber;
RecursionDepth = parentContext.RecursionDepth;
Template = parentContext.Template;
CurrentWorkingDirectory = parentContext.CurrentWorkingDirectory;
SubTemplates = parentContext.SubTemplates;
Transform = parentContext.Transform;
Globals = parentContext.Globals;
OutputMap = parentContext.OutputMap;
_evaluationContext = Evaluation.ContextFromProperties(_insertionEntityProperties, ID, SequenceNumber, _random, Globals, _logger, parentContext._evaluationContext);
}
private void ApplyRewriteDirective(Dictionary <string, string> entityProperties, RewriteDirective rewriteDirective, int entityID, Random random, IDictionary <string, object> globals)
{
var context = Evaluation.ContextFromProperties(entityProperties, entityID, entityID, random, globals, Logger);
NativeUtils.RegisterInstanceMethods(context, _directoryFunctions);
foreach (var ruleGroup in rewriteDirective.RuleGroups)
{
if (!ruleGroup.HasCondition || Interpreter.IsTrue(PropertyExtensions.ParseProperty(Evaluation.EvaluateInterpolatedString(ruleGroup.Condition, context))))
{
foreach (var rule in ruleGroup.Rules)
{
ApplyRewriteRule(entityProperties, rule, context);
}
}
else if (ruleGroup.HasCondition)
{
foreach (var rule in ruleGroup.AlternateRules)
{
ApplyRewriteRule(entityProperties, rule, context);
}
}
}
}
/// <summary>
/// Removes any template areas (<see cref="MacroEntity.Template"/>) and their contents from the given map, returning them as a dictionary.
/// Template area names do not need to be unique.
/// </summary>
private static IEnumerable <MapTemplate> ExtractSubTemplates(Map map, IDictionary <string, object> globals, ILogger logger)
{
var templateEntities = map.GetEntitiesWithClassName(MacroEntity.Template);
var objectsMarkedForRemoval = new HashSet <object>(templateEntities);
var randomSeed = (int)(map.Properties.GetNumericProperty(Attributes.RandomSeed) ?? 0);
var context = Evaluation.ContextFromProperties(map.Properties, 0, 0, new Random(randomSeed), globals, logger);
// Create a MapTemplate for each macro_template entity. These 'sub-templates' can only be used within the current map:
var subTemplates = new List <MapTemplate>();
foreach (var templateEntity in templateEntities)
{
var templateArea = templateEntity.BoundingBox.ExpandBy(0.5f);
var templateName = templateEntity.GetStringProperty(Attributes.Targetname) ?? "";
var selectionWeight = templateEntity.GetStringProperty(Attributes.SelectionWeight) ?? "";
var offset = GetTemplateEntityOrigin(templateEntity, context) * -1;
var templateMap = new Map();
// Copy custom properties into the template map properties - these will serve as local variables that will be evaluated whenever the template is instantiated:
foreach (var property in templateEntity.Properties)
{
templateMap.Properties[property.Key] = property.Value;
}
templateMap.Properties.Remove(Attributes.Targetname);
templateMap.Properties.Remove(Attributes.SelectionWeight);
templateMap.Properties.Remove(Attributes.Anchor);
// Include all entities that are fully inside this template area (except for other macro_template entities - nesting is not supported):
foreach (var entity in map.Entities.Where(entity => entity.ClassName != MacroEntity.Template))
{
if (templateArea.Contains(entity))
{
templateMap.Entities.Add(entity.Copy(offset));
objectsMarkedForRemoval.Add(entity);
}
}
// Include all brushes that are fully inside this template area:
foreach (var brush in map.WorldGeometry)
{
if (templateArea.Contains(brush))
{
templateMap.AddBrush(brush.Copy(offset));
objectsMarkedForRemoval.Add(brush);
}
}
var conditionalContent = ExtractConditionalContent(templateMap);
subTemplates.Add(new MapTemplate(templateMap, templateName, true, selectionWeight, conditionalContent: conditionalContent));
}
// Now that we've checked all template areas, we can remove the macro_template entities and their contents from the map:
foreach (var mapObject in objectsMarkedForRemoval)
{
switch (mapObject)
{
case Entity entity: map.Entities.Remove(entity); break;
case Brush brush: map.RemoveBrush(brush); break;
}
// TODO: They're also still part of groups, vis-groups, etc!
}
return(subTemplates);
}
/// <summary> /// Calls <see cref="Evaluation.EvaluateExpression(string, EvaluationContext)"/>, using this instance's evaluation context. /// </summary> public object EvaluateExpression(string expression) => Evaluation.EvaluateExpression(expression, _evaluationContext);
/// <summary> /// Calls <see cref="Evaluation.EvaluateInterpolatedString(string, EvaluationContext)"/>, using this instance's evaluation context. /// </summary> public string EvaluateInterpolatedString(string interpolatedString) => Evaluation.EvaluateInterpolatedString(interpolatedString, _evaluationContext);
