#pragma once

#include "Component.hpp"

#include "raylib.h"

#include <cstddef>
#include <deque>

/**
 * Stores and renders a fading positional trail for moving entities.
 *
 * Points are timestamped and retired from the front of a queue once they
 * exceed `pointLifetime`, so updates avoid touching every point each frame.
 */
struct TrailComponent : public Component {
    struct Point {
        float x = 0.0f;
        float y = 0.0f;
        float createdAt = 0.0f;
    };

    std::deque<Point> points;
    float elapsed = 0.0f;
    float lastSampleAt = 0.0f;
    float sampleDistance = 5.0f;
    float sampleInterval = 1.0f / 30.0f;
    float pointLifetime = 0.85f;
    float lineWidth = 2.0f;
    std::size_t maxPoints = 96;
    Color color = Color{120, 210, 255, 180};

    void Setup() override;
    void Update(float dt) override;
    void Cleanup() override;

    void Draw() const;
};