province.cpp

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// Symphony of Empires
// Copyright (C) 2021, Symphony of Empires contributors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Name:
//      province.cpp
//
// Abstract:
//      Does some important stuff.
// ----------------------------------------------------------------------------
 
#include "province.hpp"
#include "world.hpp"
#include "product.hpp"
#include "unit.hpp"
#include "building.hpp"
#include "indpobj.hpp"
#include <glm/vec3.hpp>
#include <glm/gtc/constants.hpp>
#include <glm/trigonometric.hpp>
#include <glm/geometric.hpp>
 
#include "eng3d/utils.hpp"
 
//
// Province
//
// Calculates the total number of POPs in this province (total population)
float Province::get_attractiveness(const Pop& pop) const {
    float attractive = this->base_attractive;
    const auto& owner = g_world.nations[this->owner_id];
    return attractive;
}
 
void Province::add_building(const BuildingType& building_type) {
    // Now build the building
    this->buildings[building_type].level += 1.f;
    this->buildings[building_type].req_goods = building_type.req_goods;
}
 
void Province::cancel_construction_project() {
    for(auto& building : buildings)
        building.stop_working_on_unit();
}
 
float Province::euclidean_distance(const Province& other_province, glm::vec2 world_size, float radius) const {
    const auto sphere_coord1 = Eng3D::get_sphere_coord(world_size, this->get_pos(), radius);
    const auto sphere_coord2 = Eng3D::get_sphere_coord(world_size, other_province.get_pos(), radius);
    const auto cos_angle = glm::dot(sphere_coord1, sphere_coord2) / (radius * radius);
    const auto angle = glm::acos(glm::clamp(cos_angle, -1.f, 1.f));
    const auto distance = angle * radius;
    return distance;
}
 
bool Province::is_neighbour(const Province& province) const {
    return std::find(this->neighbour_ids.begin(), this->neighbour_ids.end(), province) != this->neighbour_ids.end();
}
 
std::vector<UnitId> Province::Battle::get_attacker_unit_ids() const {
    const auto& units = g_world.unit_manager.units;
    std::vector<UnitId> v;
    for(const auto nation_id : this->attacker_nations_ids)
        for(const auto unit_id : this->unit_ids)
            if(units[unit_id].owner_id == nation_id)
                v.push_back(unit_id);
    std::sort(v.begin(), v.end());
    v.erase(std::unique(v.begin(), v.end()), v.end());
    return v;
}
 
std::vector<UnitId> Province::Battle::get_defender_unit_ids() const {
    const auto& units = g_world.unit_manager.units;
    std::vector<UnitId> v;
    for(const auto nation_id : this->defender_nations_ids)
        for(const auto unit_id : this->unit_ids)
            if(units[unit_id].owner_id == nation_id)
                v.push_back(unit_id);
    std::sort(v.begin(), v.end());
    v.erase(std::unique(v.begin(), v.end()), v.end());
    return v;
}