KlassischeKeplerKriege/game/state/trace.hpp

#pragma once

#include <glm/vec2.hpp>
#include <vector>

namespace game {
    class Missile;

    /*
     * Trace of a missile through the space.
     * Useful for rendering sth. like a smoke trail to follow the rocket.
     */
    class Trace {
        public:
            Trace(const Missile *missile);

            // TODO: add velocity of the rocket or age at the points too becasue
            // that enables nice rendering of speed etc. at different points
            // TODO: give missile to this
            void addPointFromMissile(const Missile *missile);

            /*
             * Trace point data to be used when rendering.
             */
            struct TracePoint {
                TracePoint(const Missile *missile);

                const glm::vec2 position;
                const float     speed;
            };

            std::vector<TracePoint> points;
    };
}