SensingPerception.h

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#pragma once
 
#include "npc_ai/NpcAi.h"
#include "sensing/Sensing.h"
 
#include <cmath>
#include <cstdint>
#include <span>
#include <sstream>
#include <string>
#include <string_view>
#include <vector>
 
namespace eve::npc_ai {
 
[[nodiscard]] inline PerceptionMemory perceptionMemoryFrom(const eve::sensing::PerceptionFact& fact,
                                                           std::uint64_t observedTick, std::uint64_t forgetAfterTicks,
                                                           std::string_view sense = "sensing.query") {
    PerceptionMemory memory;
    memory.subject          = fact.subjectId;
    memory.sense            = std::string(sense);
    memory.observedTick     = observedTick;
    memory.forgetAfterTicks = forgetAfterTicks;
    // score is higher-is-better (Phase 1: -distance). Map into (0,1].
    const float confidence = 1.f / (1.f + std::exp(fact.score <= 0.f ? -fact.score : fact.score));
    memory.confidence      = confidence > 0.f ? static_cast<double>(confidence) : 0.0;
    std::ostringstream payload;
    payload << "{\"x\":" << fact.x << ",\"y\":" << fact.y << ",\"distance\":" << fact.distance
            << ",\"score\":" << fact.score << ",\"scoreReason\":\"" << fact.scoreReason << "\"}";
    memory.payloadJson = payload.str();
    return memory;
}
 
[[nodiscard]] inline std::vector<PerceptionMemory> perceptionMemoriesFrom(
    std::span<const eve::sensing::PerceptionFact> facts, std::uint64_t observedTick, std::uint64_t forgetAfterTicks,
    std::string_view sense = "sensing.query") {
    std::vector<PerceptionMemory> memories;
    memories.reserve(facts.size());
    for (const auto& fact : facts)
        memories.push_back(perceptionMemoryFrom(fact, observedTick, forgetAfterTicks, sense));
    return memories;
}
 
}  // namespace eve::npc_ai