random_event_generator.h

#ifndef RANDOM_EVENT_GENERATOR_H
#define RANDOM_EVENT_GENERATOR_H
 
#include <array>
#include <cstdlib>
#include <random>
 
#define N_DROP_TYPES 4
 
typedef enum {
    nothing,
    rand_gold,
    rand_potion,
    rand_item,
    invalid
} random_drop_t;
 
typedef struct range_t {
    float min_value;
    float max_value;
} range_t;
 
class RandomEventGenerator {
   private:
    std::array<random_drop_t, N_DROP_TYPES> events;
    std::array<range_t, N_DROP_TYPES> range_events;
    std::random_device rd;
    std::mt19937 gen;
    std::uniform_real_distribution<> drops_dist;
 
    RandomEventGenerator();
 
   public:
    ~RandomEventGenerator();
    static RandomEventGenerator& get_instance();
    static random_drop_t roll();
 
    static uint16_t random_in(uint16_t min, uint16_t max);
    static unsigned int rand_idx_in_vec(unsigned int vec_size);
 
};
 
#endif  // RANDOM_EVENT_GENERATOR_H