holesome/src/game/level/level_loader.cpp

#include "level_loader.hpp"
#include "../game.h"
#include "../physics/map/map_simulation.hpp"
#include "../../debug/grid_debug_layer.h"
#include "../../levels.hpp"
#include "../collectables/collection/collectables_collection.hpp"
#include "../collectables/collectable_factory.hpp"
#include "../player/player_collection.hpp"
#include "../physics/hole/hole_depth_simulation.hpp"

void LevelLoader::loadLevel(const LevelConfig &levelConfig)
{
    auto game = Game::getInstance();
    game->clearGameObjects();

    LOG(INFO) << "Loading level '" << levelConfig.name << "' ...";

    game->setLevel(levelConfig);
    MapSimulation::getInstance()->resetMap(levelConfig.worldMapSize);
    PlayerCollection::getInstance()->clear();

    // Add basic game objects
    if (DEVELOPER_MODE)
    {
        game->addGameObject(std::make_shared<GridDebugLayer>(0, 50, 0, 50));
    }

    game->addGameObject(std::make_shared<TrackingView>());
    game->addGameObject(PlayerCollection::getInstance());
    PlayerCollection::getInstance()->setSpawnPoints(levelConfig.playerSpawnPoints);

    // Prepare collectables framework
    auto maxDepth = (int) levelConfig.worldMapSize.x * 2;
    auto collectablesCollection = CollectablesCollection::getInstance();
    collectablesCollection->createEmpty(maxDepth);
    game->addGameObject(collectablesCollection);

    // Spawn collectibles
    for (auto const &collectableInfo: levelConfig.collectables)
    {
        spawnCollectable(collectableInfo);
    }

    // Add physics simulations
    game->addGameObject(MapSimulation::getInstance());
    // For every depth, add a hole depth simulation
    for (int depth = 0; depth < maxDepth; depth++)
    {
        auto depthCollection = collectablesCollection->getDepthCollection(depth);
        game->addGameObject(std::make_shared<HoleDepthSimulation>(depthCollection));
    }

    LOG(INFO) << "Finished loading level '" << levelConfig.name << "'.";
}

void LevelLoader::loadLevel(const std::string &levelName)
{
    // Does level exist?
    if (!all_levels.contains(levelName))
    {
        LOG(ERROR) << "Level '" << levelName << "' not found. Could not load it.";
        throw std::invalid_argument("Could not load level.");
    }

    LevelLoader::loadLevel(all_levels.at(levelName));
}

void LevelLoader::spawnCollectable(const CollectableInLevel &collectableInfo)
{
    LOG(INFO) << "Spawning collectable '" << collectableInfo.name << "' ...";
    auto collectable = CollectableFactory::createFromInLevelConfig(collectableInfo);
    LOG(DEBUG) << "Has depth " << collectable->getDepth() << ".";
    CollectablesCollection::getInstance()->add(collectable);
}