KlassischeKeplerKriege/game/state/explosion.hpp

#pragma once

#include <glm/vec2.hpp>

#include "util.hpp"

#include "missile_hit_type.hpp"

namespace game {
    /**
     * Explosion: just an effect which looks good.
     */
    class Explosion {
    public:
        Explosion(const glm::vec2 &pos, Hit hit, float maxAge=1.0)
            : hit(hit)
            , position(pos)
            , age(0.0)
            , maxAge(maxAge * (1.0 + 0.1*util::randf_0_1()))
            , maxRadius(0.05)
        {
            static size_t id_counter = 0;
            id = id_counter++;
        }

        const Hit       hit;      // kind of the explosion depends on the hit type
        const glm::vec2 position; // position where it starts
        float           age;      // age (in seconsd) of the explosion

        // age (in seconds) when the explosion is not visible
        // anymore and will disappear afterwards
        const float     maxAge;
        const float     maxRadius; // current radius depends on time.

        size_t          id;
    };
}