Function generateTerrain

src/OpenLoco/src/Map/MapGenerator/MapGenerator.cpp:513–571

0x0046A021

    // 0x0046A021
    static void generateTerrain(HeightMap& heightMap)
    {
        const auto style = getEverywhereSurfaceStyle();
        if (!style.has_value())
        {
            return;
        }

        const TilePosRangeView tileLoop = getDrawableTileRange();
        for (const auto& tilePos : tileLoop)
        {
            auto* surface = World::TileManager::get(tilePos).surface();
            if (surface == nullptr)
            {
                continue;
            }
            surface->setTerrain(*style);
            surface->setGrowthStage(0);

            const auto variation = getRandomTerrainVariation(*surface);
            if (variation.has_value())
            {
                surface->setVariation(*variation);
            }
        }

        constexpr std::array landDistributionPatterns = {
            Scenario::LandDistributionPattern::farFromWater,
            Scenario::LandDistributionPattern::nearWater,
            Scenario::LandDistributionPattern::onMountains,
            Scenario::LandDistributionPattern::farFromMountains,
            Scenario::LandDistributionPattern::inSmallRandomAreas,
            Scenario::LandDistributionPattern::inLargeRandomAreas,
            Scenario::LandDistributionPattern::aroundCliffs,
        };

        for (auto i = 0U; i < landDistributionPatterns.size(); i++)
        {
            updateProgress(55 + 12 * i);

            for (uint8_t landObjectIdx = 0; landObjectIdx < ObjectManager::getMaxObjects(ObjectType::land); ++landObjectIdx)
            {
                const auto* landObj = ObjectManager::get<LandObject>(landObjectIdx);
                if (landObj == nullptr)
                {
                    continue;
                }

                const auto typePattern = Scenario::getOptions().landDistributionPatterns[landObjectIdx];
                const auto distPattern = landDistributionPatterns[i];
                if (typePattern != distPattern)
                {
                    continue;
                }

                _generateFuncs[enumValue(distPattern)](heightMap, landObjectIdx);
            }
        }