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a0925c79c3
* You can now simply write the name of the scene or global variable in an expression to use it: `1 + MyVariable` (instead of `1 + Variable(MyVariable)`). * Objects can also have their variables accessed like this: `MyObject.MyVariable` (instead of `MyObject.Variable(MyVariable)`. * This also works for properties inside functions of behaviors or custom objects. For example, you can write `Speed` instead of `Object.Behavior::PropertySpeed()`. * This syntax will also handle all types of variables without the need to write ToString. For example, you can now write "Score: " + CoinsEarned instead of "Score: " + ToString(Variable(CoinsEarned)). * This syntax will only work (and autocompletions will be shown) if you add the variable in the variables editor of the scene, the project or in the variables of the object. It's a good practice to always declare your variables here and give them a default value - do it to benefit from this new simplified syntax, which will make your formulas and expressions much more readable. * When you rename a variable in an editor, it will now rename the variables everywhere in the events of the project. This makes it much easier to change the name of a variable if you find a better one. Note that this works for "rootæ variables, but not variables inside structures or arrays.
298 lines
10 KiB
C++
298 lines
10 KiB
C++
/*
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* GDevelop Core
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* Copyright 2008-2016 Florian Rival (Florian.Rival@gmail.com). All rights
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* reserved. This project is released under the MIT License.
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*/
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#ifndef METADATAPROVIDER_H
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#define METADATAPROVIDER_H
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#include "GDCore/Extensions/Metadata/InstructionMetadata.h"
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#include "GDCore/String.h"
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namespace gd {
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class BehaviorMetadata;
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class ObjectMetadata;
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class EffectMetadata;
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class ExpressionMetadata;
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class ExpressionMetadata;
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class Platform;
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class PlatformExtension;
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class ObjectsContainersList;
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struct FunctionCallNode;
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struct ExpressionNode;
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} // namespace gd
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namespace gd {
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/**
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* \brief A container for metadata about an
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* object/behavior/instruction/expression and its associated extension.
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*/
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template <class T>
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class ExtensionAndMetadata {
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public:
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ExtensionAndMetadata(const gd::PlatformExtension& extension_,
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const T& metadata_)
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: extension(&extension_), metadata(&metadata_){};
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/**
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* \brief Default constructor, only here to satisfy Emscripten bindings.
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* \warning Please do not use.
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* \private
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*/
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ExtensionAndMetadata() : extension(nullptr), metadata(nullptr){};
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/**
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* \brief Get the associated extension.
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*/
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const gd::PlatformExtension& GetExtension() { return *extension; };
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/**
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* \brief Get the metadata.
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*/
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const T& GetMetadata() { return *metadata; };
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private:
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const gd::PlatformExtension* extension;
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const T* metadata;
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};
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/**
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* \brief Allow to easily get metadata for instructions (i.e actions and
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* conditions), expressions, objects and behaviors.
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*
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* \ingroup PlatformDefinition
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*/
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class GD_CORE_API MetadataProvider {
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public:
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/**
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* Get the metadata about a behavior, and its associated extension.
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*/
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static ExtensionAndMetadata<BehaviorMetadata> GetExtensionAndBehaviorMetadata(
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const gd::Platform& platform, gd::String behaviorType);
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/**
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* Get the metadata about an object, and its associated extension.
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*/
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static ExtensionAndMetadata<ObjectMetadata> GetExtensionAndObjectMetadata(
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const gd::Platform& platform, gd::String type);
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/**
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* Get the metadata about an effect, and its associated extension.
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*/
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static ExtensionAndMetadata<EffectMetadata> GetExtensionAndEffectMetadata(
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const gd::Platform& platform, gd::String type);
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/**
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* Get the metadata of an action, and its associated extension.
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* Works for object, behaviors and static actions.
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*/
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static ExtensionAndMetadata<InstructionMetadata>
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GetExtensionAndActionMetadata(const gd::Platform& platform,
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gd::String actionType);
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/**
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* Get the metadata of a condition, and its associated extension.
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* Works for object, behaviors and static conditions.
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*/
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static ExtensionAndMetadata<InstructionMetadata>
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GetExtensionAndConditionMetadata(const gd::Platform& platform,
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gd::String conditionType);
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/**
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* Get information about an expression, and its associated extension.
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* Works for free expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndExpressionMetadata(const gd::Platform& platform,
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gd::String exprType);
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/**
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* Get information about an expression, and its associated extension.
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* Works for object expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndObjectExpressionMetadata(const gd::Platform& platform,
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gd::String objectType,
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gd::String exprType);
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/**
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* Get information about an expression, and its associated extension.
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* Works for behavior expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndBehaviorExpressionMetadata(const gd::Platform& platform,
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gd::String autoType,
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gd::String exprType);
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/**
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* Get information about a string expression, and its associated extension.
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* Works for free expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndStrExpressionMetadata(const gd::Platform& platform,
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gd::String exprType);
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/**
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* Get information about a string expression, and its associated extension.
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* Works for object expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndObjectStrExpressionMetadata(const gd::Platform& platform,
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gd::String objectType,
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gd::String exprType);
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/**
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* Get information about a string expression, and its associated extension.
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* Works for behavior expressions.
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*/
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static ExtensionAndMetadata<ExpressionMetadata>
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GetExtensionAndBehaviorStrExpressionMetadata(const gd::Platform& platform,
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gd::String autoType,
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gd::String exprType);
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/**
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* Get the metadata about a behavior.
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*/
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static const BehaviorMetadata& GetBehaviorMetadata(
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const gd::Platform& platform, gd::String behaviorType);
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/**
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* Get the metadata about an object.
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*/
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static const ObjectMetadata& GetObjectMetadata(const gd::Platform& platform,
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gd::String type);
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/**
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* Get the metadata about an effect.
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*/
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static const EffectMetadata& GetEffectMetadata(const gd::Platform& platform,
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gd::String type);
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/**
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* Get the metadata of an action.
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* Works for object, behaviors and static actions.
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*/
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static const gd::InstructionMetadata& GetActionMetadata(
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const gd::Platform& platform, gd::String actionType);
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/**
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* Get the metadata of a condition.
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* Works for object, behaviors and static conditions.
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*/
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static const gd::InstructionMetadata& GetConditionMetadata(
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const gd::Platform& platform, gd::String conditionType);
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/**
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* Get information about an expression from its type
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* Works for free expressions.
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*/
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static const gd::ExpressionMetadata& GetExpressionMetadata(
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const gd::Platform& platform, gd::String exprType);
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/**
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* Get information about an expression from its type
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* Works for object expressions.
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*/
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static const gd::ExpressionMetadata& GetObjectExpressionMetadata(
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const gd::Platform& platform, gd::String objectType, gd::String exprType);
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/**
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* Get information about an expression from its type
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* Works for behavior expressions.
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*/
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static const gd::ExpressionMetadata& GetBehaviorExpressionMetadata(
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const gd::Platform& platform, gd::String autoType, gd::String exprType);
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/**
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* Get information about a string expression from its type
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* Works for free expressions.
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*/
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static const gd::ExpressionMetadata& GetStrExpressionMetadata(
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const gd::Platform& platform, gd::String exprType);
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/**
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* Get information about a string expression from its type
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* Works for object expressions.
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*/
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static const gd::ExpressionMetadata& GetObjectStrExpressionMetadata(
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const gd::Platform& platform, gd::String objectType, gd::String exprType);
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/**
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* Get information about a string expression from its type
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* Works for behavior expressions.
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*/
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static const gd::ExpressionMetadata& GetBehaviorStrExpressionMetadata(
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const gd::Platform& platform, gd::String autoType, gd::String exprType);
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/**
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* Get information about an expression from its type.
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* Works for free expressions.
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*/
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static const gd::ExpressionMetadata& GetAnyExpressionMetadata(
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const gd::Platform& platform, gd::String exprType);
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/**
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* Get information about an expression from its type.
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* Works for object expressions.
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*/
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static const gd::ExpressionMetadata& GetObjectAnyExpressionMetadata(
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const gd::Platform& platform, gd::String objectType, gd::String exprType);
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static const gd::ExpressionMetadata& GetFunctionCallMetadata(
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const gd::Platform& platform,
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const gd::ObjectsContainersList &objectsContainersList,
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FunctionCallNode& node);
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static const gd::ParameterMetadata* GetFunctionCallParameterMetadata(
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const gd::Platform& platform,
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const gd::ObjectsContainersList &objectsContainersList,
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FunctionCallNode& functionCall,
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ExpressionNode& parameter);
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static const gd::ParameterMetadata* GetFunctionCallParameterMetadata(
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const gd::Platform& platform,
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const gd::ObjectsContainersList &objectsContainersList,
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FunctionCallNode& functionCall,
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int parameterIndex);
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/**
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* Get information about an expression from its type.
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* Works for behavior expressions.
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*/
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static const gd::ExpressionMetadata& GetBehaviorAnyExpressionMetadata(
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const gd::Platform& platform, gd::String autoType, gd::String exprType);
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static bool IsBadExpressionMetadata(const gd::ExpressionMetadata& metadata) {
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return &metadata == &badExpressionMetadata;
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}
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static bool IsBadInstructionMetadata(const gd::InstructionMetadata& metadata) {
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return &metadata == &badInstructionMetadata;
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}
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static bool IsBadBehaviorMetadata(const gd::BehaviorMetadata& metadata) {
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return &metadata == &badBehaviorMetadata;
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}
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static bool IsBadObjectMetadata(const gd::ObjectMetadata& metadata) {
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return &metadata == &badObjectInfo;
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}
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virtual ~MetadataProvider();
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private:
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MetadataProvider();
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static PlatformExtension badExtension;
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static BehaviorMetadata badBehaviorMetadata;
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static ObjectMetadata badObjectInfo;
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static EffectMetadata badEffectMetadata;
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static gd::InstructionMetadata badInstructionMetadata;
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static gd::ExpressionMetadata badExpressionMetadata;
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int useless; // Useless member to avoid emscripten "must have a positive
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// integer typeid pointer" runtime error.
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};
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} // namespace gd
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#endif // METADATAPROVIDER_H
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