infrastructure.hpp

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#pragma once
 
std::vector<uint32_t> infrastructure_map_from(sys::state& state) {
    uint32_t province_size = state.world.province_size();
    uint32_t texture_size = province_size + 256 - province_size % 256;
 
    std::vector<uint32_t> prov_color(texture_size * 2);
 
    int32_t max_rails_lvl = state.economy_definitions.building_definitions[int32_t(economy::province_building_type::railroad)].max_level;
    state.world.for_each_province([&](dcon::province_id prov_id) {
        auto nation = state.world.province_get_nation_from_province_ownership(prov_id);
 
        int32_t current_rails_lvl = state.world.province_get_building_level(prov_id, uint8_t(economy::province_building_type::railroad));
        int32_t max_local_rails_lvl = state.world.nation_get_max_building_level(state.local_player_nation, uint8_t(economy::province_building_type::railroad));
        bool party_allows_building_railroads =
                (nation == state.local_player_nation &&
                        (state.world.nation_get_combined_issue_rules(nation) & issue_rule::build_railway) != 0) ||
                (nation != state.local_player_nation &&
                        (state.world.nation_get_combined_issue_rules(nation) & issue_rule::allow_foreign_investment) != 0);
        uint32_t color;
 
        if(party_allows_building_railroads) {
 
            if(province::can_build_railroads(state, prov_id, state.local_player_nation)) {
 
                color = ogl::color_gradient(float(current_rails_lvl) / float(max_rails_lvl), sys::pack_color(14, 240, 44), // green
                        sys::pack_color(41, 5, 245)                                                                                                                                                      // blue
 
                );
 
            } else if(current_rails_lvl == max_local_rails_lvl) {
                color = sys::pack_color(232, 228, 111); // yellow
            } else {
                color = sys::pack_color(222, 7, 46); // red
            }
 
        } else {
            color = sys::pack_color(222, 7, 46); // red
        }
        auto i = province::to_map_id(prov_id);
 
        prov_color[i] = color;
 
        if(province::has_railroads_being_built(state, prov_id)) {
            prov_color[i + texture_size] = sys::pack_color(232, 228, 111); // yellow
        } else {
            prov_color[i + texture_size] = color;
        }
    });
 
    return prov_color;
}