SkillCondition.h

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#pragma once
#include "common/Export.h"
 
 
#include "decision/Condition.h"
 
#include <functional>
#include <optional>
#include <string_view>
 
namespace eve::rpg {
 
class RPGActor;
struct SkillDefinition;
 
struct SkillConditionQueries {
    using Authority = std::function<std::optional<bool>(std::string_view scope)>;
    using Policy =
        std::function<std::optional<decision::ConditionResult>(std::string_view name, const eve::Value& arguments)>;
 
    Authority authority;
    Policy    policy;
};
 
class EVENGINE_API_PLATFORM SkillConditionContext final : public decision::EvaluationContext {
public:
    SkillConditionContext(const RPGActor* actor, const SkillDefinition& definition, SkillConditionQueries queries = {});
 
    [[nodiscard]] std::optional<eve::Value> value(std::string_view key) const override;
    [[nodiscard]] std::optional<bool> hasTag(std::string_view tag) const override;
    [[nodiscard]] std::optional<eve::Value> attribute(std::string_view key) const override;
    [[nodiscard]] std::optional<eve::Value> resource(std::string_view key) const override;
    [[nodiscard]] std::optional<eve::Value> state(std::string_view key) const override;
    [[nodiscard]] std::optional<bool> authority(std::string_view scope) const override;
    [[nodiscard]] std::optional<decision::ConditionResult> policy(std::string_view  name,
                                                                  const eve::Value& arguments) const override;
 
private:
    const RPGActor*        actor_      = nullptr;
    const SkillDefinition* definition_ = nullptr;
    SkillConditionQueries  queries_;
};
 
class EVENGINE_API_PLATFORM SkillConditionAdapter {
public:
    [[nodiscard]] static decision::ConditionResult evaluate(const RPGActor* actor, const SkillDefinition& definition,
                                                            const decision::Condition& condition,
                                                            SkillConditionQueries      queries = {});
};
 
}  // namespace eve::rpg