raycaster/components.cpp

#include "components.hpp"
#include "point.hpp"

namespace components {
  ENROLL_COMPONENT(Position, location.x, location.y);
  ENROLL_COMPONENT(EnemyConfig, hearing_distance);
  ENROLL_COMPONENT(Motion, dx, dy, random);
  ENROLL_COMPONENT(Combat, hp, max_hp, damage, dead);
  ENROLL_COMPONENT(Device, config, events);
  ENROLL_COMPONENT(Animation, scale, simple, frames, speed);
  ENROLL_COMPONENT(Sound, attack, death);

  void configure_entity(const ComponentMap& component_map, DinkyECS::World& world, DinkyECS::Entity ent, json& data) {
    for (auto &i : data) {
      dbc::check(i.contains("_type") && i["_type"].is_string(), fmt::format("component has no _type: {}", data.dump()));
      dbc::check(component_map.contains(i["_type"]), fmt::format("component_map doesn't have type {}", std::string(i["_type"])));
      component_map.at(i["_type"])(world, ent, i);
    }
  }

  void configure(ComponentMap& component_map) {
    components::enroll<Combat>(component_map);
    components::enroll<Loot>(component_map);
    components::enroll<Position>(component_map);
    components::enroll<Weapon>(component_map);
    components::enroll<Curative>(component_map);
    components::enroll<EnemyConfig>(component_map);
    components::enroll<Tile>(component_map);
    components::enroll<Motion>(component_map);
    components::enroll<LightSource>(component_map);
    components::enroll<Device>(component_map);
    components::enroll<Sprite>(component_map);
    components::enroll<Animation>(component_map);
    components::enroll<Sound>(component_map);
  }

  void Animation::play() {
    if(!playing) {
      current = 0;
      playing = true;
    }
  }

  void Animation::step(sf::Vector2f& scale_out, sf::IntRect& rect_out) {
    if(playing && current < frames) {
      scale_out.x += scale;
      scale_out.y += scale;

      if(!simple) {
        rect_out.position.x += current * TEXTURE_WIDTH;
      }

      subframe += speed;
      current = int(subframe);
    } else {
      playing = false;
      current = 0;
      subframe = 0.0f;
    }
  }
}