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EntityClass.cpp
543 lines (448 loc) · 14.6 KB
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EntityClass.cpp
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#include "EntityClass.h"
#include "itextstream.h"
#include "ieclasscolours.h"
#include "string/convert.h"
#include "string/predicate.h"
#include <functional>
namespace eclass
{
namespace
{
const Vector3 DefaultEntityColour(0.3, 0.3, 1);
const Vector4 UndefinedColour(-1, -1, -1, -1);
}
EntityClass::EntityClass(const std::string& name)
: DeclarationBase<IEntityClass>(decl::Type::EntityDef, name),
_visibility([this]() {
// Entity class visibility is NOT inherited -- hiding an abstract base entity from the list
// does not imply all of its concrete subclasses should also be hidden.
return getAttributeValue("editor_visibility", false) == "hidden" ? vfs::Visibility::HIDDEN
: vfs::Visibility::NORMAL;
}),
_colour(UndefinedColour),
// greebo: Changed default behaviour when unknown entites are encountered to isFixedSize == FALSE
// so that brushes of unknown classes don't get lost (issue #240)
_fixedSize(false)
{}
EntityClass::~EntityClass()
{
_parentChangedConnection.disconnect();
}
IEntityClass* EntityClass::getParent()
{
ensureParsed();
return _parent;
}
vfs::Visibility EntityClass::getVisibility()
{
return _visibility.get();
}
sigc::signal<void>& EntityClass::changedSignal()
{
return _changedSignal;
}
void EntityClass::onSyntaxBlockAssigned(const decl::DeclarationBlockSyntax& block)
{
clear();
emitChangedSignal();
}
bool EntityClass::isFixedSize()
{
ensureParsed();
if (_fixedSize) {
return true;
}
else {
// Check for the existence of editor_mins/maxs attributes, and that
// they do not contain only a question mark
return (getAttributeValue("editor_mins").size() > 1
&& getAttributeValue("editor_maxs").size() > 1);
}
}
AABB EntityClass::getBounds()
{
ensureParsed();
if (isFixedSize())
{
return AABB::createFromMinMax(
string::convert<Vector3>(getAttributeValue("editor_mins")),
string::convert<Vector3>(getAttributeValue("editor_maxs"))
);
}
return AABB(); // null AABB
}
EntityClass::Type EntityClass::getClassType()
{
ensureParsed();
if (isLight())
{
return Type::Light;
}
if (!isFixedSize())
{
// Variable size entity
return Type::StaticGeometry;
}
if (!getAttributeValue("model").empty())
{
// Fixed size, has model path
return Type::EntityClassModel;
}
if (getDeclName() == "speaker")
{
return Type::Speaker;
}
return Type::Generic;
}
bool EntityClass::isLight()
{
ensureParsed();
return _isLight;
}
void EntityClass::setIsLight(bool val)
{
_isLight = val;
if (_isLight)
_fixedSize = true;
}
void EntityClass::setColour(const Vector4& colour)
{
ensureParsed();
auto origColour = _colour;
_colour = colour;
// Set the entity colour to default, if none was specified
if (_colour == UndefinedColour)
{
_colour = DefaultEntityColour;
}
// Emit the signal if the colour actually changed
if (origColour != _colour)
emitChangedSignal();
}
void EntityClass::resetColour()
{
ensureParsed();
// An override colour which matches this exact class is final, and overrides
// everything else
if (GlobalEclassColourManager().applyColours(*this))
return;
// Look for an editor_color on this class only
const std::string colStr = getAttributeValue("editor_color", false);
if (!colStr.empty())
{
// Set alpha to 0.5 if editor_transparent is set
Vector4 colour(string::convert<Vector3>(colStr), _colourTransparent ? 0.5f : 1.0f);
setColour(colour);
return;
}
// If there is a parent, inherit its getColour() directly, which takes into
// account any EClassColourManager overrides at the parent level.
if (_parent)
return setColour(_parent->getColour());
// No parent and no attribute, all we can use is the default colour
setColour(DefaultEntityColour);
}
const Vector4& EntityClass::getColour()
{
ensureParsed();
return _colour;
}
/* ATTRIBUTES */
/**
* Insert an EntityClassAttribute, doesn't overwrite previous values,
* but will merge useful description information into the existing one.
*/
void EntityClass::emplaceAttribute(EntityClassAttribute&& attribute)
{
// Try to emplace the class attribute
auto result = _attributes.try_emplace(attribute.getName(), std::move(attribute));
if (!result.second)
{
auto& existing = result.first->second;
// greebo: Attribute already existed, check if we have some
// descriptive properties to be added to the existing one.
if (!attribute.getDescription().empty() && existing.getDescription().empty())
{
existing.setDescription(attribute.getDescription());
}
// Check if we have a more descriptive type
if (!attribute.getType().empty() && existing.getType().empty())
{
existing.setType(attribute.getType());
}
}
}
EntityClass::Ptr EntityClass::CreateDefault(const std::string& name)
{
auto eclass = std::make_shared<EntityClass>(name);
// Force the entity class colour to default
eclass->setColour(UndefinedColour);
return eclass;
}
void EntityClass::forEachAttributeInternal(InternalAttrVisitor visitor,
bool editorKeys) const
{
// Visit parent attributes, making sure we set the inherited flag
if (_parent)
_parent->forEachAttributeInternal(visitor, editorKeys);
// Visit our own attributes
for (const auto& pair: _attributes)
{
// Visit if it is a non-editor key or we are visiting all keys
if (editorKeys || !string::istarts_with(pair.first, "editor_"))
{
visitor(pair.second);
}
}
}
void EntityClass::forEachAttribute(AttributeVisitor visitor,
bool editorKeys)
{
ensureParsed();
// First compile a map of all attributes we need to pass to the visitor,
// ensuring that there is only one attribute per name (i.e. we don't want to
// visit the same-named attribute on both a child and one of its ancestors)
using AttrsByName = std::map<std::string, const EntityClassAttribute*>;
AttrsByName attrsByName;
// Internal visit function visits parent first, then child, ensuring that
// more derived attributes will replace parents in the map
forEachAttributeInternal(
[&attrsByName](const EntityClassAttribute& a) {
attrsByName[a.getName()] = &a;
},
editorKeys
);
// Pass attributes to the visitor function, setting the inherited flag on
// any which are not present on this EntityClass
for (const auto& pair: attrsByName)
{
visitor(*pair.second, (_attributes.count(pair.first) == 0));
}
}
// Resolve inheritance for this class
void EntityClass::resolveInheritance()
{
// If we have already resolved inheritance, do nothing
if (_inheritanceResolved)
return;
// Lookup the parent name and return if it is not set. Also return if the
// parent name is the same as our own classname, to avoid infinite
// recursion.
std::string parentName = getAttributeValue("inherit");
if (parentName.empty() || parentName == getDeclName())
{
resetColour();
return;
}
// Find the parent entity class
auto parentClass = GlobalEntityClassManager().findClass(parentName);
if (parentClass)
{
// Set our parent pointer
_parent = static_cast<EntityClass*>(parentClass.get());
}
else
{
rWarning() << "[eclassmgr] Entity class " << getDeclName()
<< " specifies unknown parent class " << parentName << std::endl;
}
// Set the resolved flag
_inheritanceResolved = true;
if (!_fixedSize && !getAttributeValue("model").empty())
{
// We have a model path (probably an inherited one), so this is treated as fixed-size class
_fixedSize = true;
}
if (getAttributeValue("editor_light") == "1" || getAttributeValue("spawnclass") == "idLight")
{
// We have a light
setIsLight(true);
}
if (getAttributeValue("editor_transparent") == "1")
{
_colourTransparent = true;
}
// Set up inheritance of entity colours: colours inherit from parent unless
// there is an explicit editor_color defined at this level
resetColour();
if (_parent)
{
// resolveInheritance() can be called more than once (e.g. after Reload Defs) so make sure
// we only have a single connection to the parent's changed signal.
_parentChangedConnection.disconnect();
_parentChangedConnection = _parent->changedSignal().connect(
sigc::mem_fun(this, &EntityClass::resetColour)
);
}
}
bool EntityClass::isOfType(const std::string& className)
{
ensureParsed();
for (IEntityClass* currentClass = this;
currentClass != nullptr;
currentClass = currentClass->getParent())
{
if (currentClass->getDeclName() == className)
{
return true;
}
}
return false;
}
// Find a single attribute
EntityClassAttribute* EntityClass::getAttribute(const std::string& name, bool includeInherited)
{
ensureParsed();
// First look up the attribute on this class; if found, we can simply return it
auto f = _attributes.find(name);
if (f != _attributes.end())
return &f->second;
// If there is no parent or we have been instructed to ignore inheritance,
// this is the end of the line: return nothing
if (!_parent || !includeInherited)
return nullptr;
// Otherwise delegate to the parent (which will recurse until an attribute
// is found or a null parent ends the process)
return _parent->getAttribute(name);
}
std::string EntityClass::getAttributeValue(const std::string& name, bool includeInherited)
{
if (auto* attr = getAttribute(name, includeInherited); attr)
return attr->getValue();
else
return "";
}
std::string EntityClass::getAttributeType(const std::string& name)
{
ensureParsed();
// Check the attributes on this class
const auto& attribute = _attributes.find(name);
if (attribute != _attributes.end())
{
const auto& type = attribute->second.getType();
if (!type.empty())
{
return type;
}
}
// Walk up the inheritance tree until we spot a non-empty type
return _parent ? _parent->getAttributeType(name) : "";
}
std::string EntityClass::getAttributeDescription(const std::string& name)
{
ensureParsed();
// Check the attributes on this class first
const auto& attribute = _attributes.find(name);
if (attribute != _attributes.end())
{
const auto& description = attribute->second.getDescription();
if (!description.empty())
{
return description;
}
}
// Walk up the inheritance tree until we spot a non-empty description
return _parent ? _parent->getAttributeDescription(name) : "";
}
void EntityClass::clear()
{
// Don't clear the name
_isLight = false;
_parent = nullptr;
_colour = UndefinedColour;
_colourTransparent = false;
_fixedSize = false;
_attributes.clear();
_inheritanceResolved = false;
}
void EntityClass::parseEditorSpawnarg(const std::string& key, const std::string& value)
{
// "editor_yyy" represents an attribute that may be set on this
// entity. Construct a value-less EntityClassAttribute to add to
// the class, so that it will show in the entity inspector.
// Locate the space in "editor_bool myVariable", starting after "editor_"
std::size_t spacePos = key.find(' ', 7);
// Only proceed if we have a space (some keys like "editor_displayFolder"
// don't have spaces)
if (spacePos != std::string::npos)
{
// The part beyond the space is the name of the attribute
std::string attName = key.substr(spacePos + 1);
// Get the type by trimming the string left and right
std::string type = key.substr(7, key.length() - attName.length() - 8);
if (!attName.empty() && type != "setKeyValue") // Ignore editor_setKeyValue
{
// Transform the type into a better format
if (type == "var" || type == "string")
{
type = "text";
}
// Construct an attribute with empty value, but with valid
// description
emplaceAttribute(EntityClassAttribute(type, attName, "", value));
}
}
}
void EntityClass::onBeginParsing()
{
// Clear this structure first, we might be "refreshing" ourselves from tokens
clear();
}
void EntityClass::parseFromTokens(parser::DefTokeniser& tokeniser)
{
// Loop over all of the keys in this entitydef
while (tokeniser.hasMoreTokens())
{
auto key = tokeniser.nextToken();
auto value = tokeniser.nextToken();
// Handle some keys specially
if (key == "model")
{
_fixedSize = true;
}
else if (key == "editor_color")
{
setColour(string::convert<Vector3>(value));
}
else if (key == "editor_light")
{
setIsLight(value == "1");
}
else if (key == "spawnclass")
{
setIsLight(value == "idLight");
}
else if (string::istarts_with(key, "editor_"))
{
parseEditorSpawnarg(key, value);
}
// We're only interested in non-inherited key/values when parsing
auto* attribute = getAttribute(key, false);
// Add the EntityClassAttribute for this key/val
if (!attribute)
{
// Attribute does not exist, add it.
// Following key-specific processing, add the keyvalue to the eclass
// The type is an empty string, it will be set to a non-type as soon as we encounter it
emplaceAttribute(EntityClassAttribute("", key, value, ""));
}
else if (attribute->getValue().empty())
{
// Attribute type is set, but value is empty, set the value.
attribute->setValue(value);
}
else
{
// Both type and value are not empty, emit a warning
rWarning() << "[eclassmgr] attribute " << key
<< " already set on entityclass " << getDeclName() << std::endl;
}
}
}
void EntityClass::onParsingFinished()
{
resolveInheritance();
// Notify the observers
emitChangedSignal();
}
} // namespace eclass