Function paintEntitiesWithFilter

src/OpenLoco/src/Paint/PaintEntity.cpp:18–77

{
    template<typename FilterType>
    static void paintEntitiesWithFilter(PaintSession& session, const World::Pos2& loc, FilterType&& filter)
    {
        auto* rt = session.getRenderTarget();
        if (Config::get().vehiclesMinScale < rt->zoomLevel)
        {
            return;
        }

        if (loc.x >= 0x4000 || loc.y >= 0x4000)
        {
            return;
        }

        EntityManager::EntityTileList entities(loc);
        for (auto* entity : entities)
        {
            // TODO: Create a rect from context dims
            auto left = rt->x;
            auto top = rt->y;
            auto right = left + rt->width;
            auto bottom = top + rt->height;

            // TODO: Create a rect from sprite dims and use a contains function
            if (entity->spriteTop > bottom)
            {
                continue;
            }
            if (entity->spriteBottom <= top)
            {
                continue;
            }
            if (entity->spriteLeft > right)
            {
                continue;
            }
            if (entity->spriteRight <= left)
            {
                continue;
            }
            if (!filter(entity))
            {
                continue;
            }
            session.setCurrentItem(entity);
            session.setEntityPosition(entity->position);
            session.setItemType(InteractionItem::entity);
            switch (entity->baseType)
            {
                case EntityBaseType::vehicle:
                    paintVehicleEntity(session, entity->asBase<Vehicles::VehicleBase>());
                    break;
                case EntityBaseType::effect:
                    paintEffectEntity(session, entity->asBase<EffectEntity>());
                    break;
                case EntityBaseType::null:
                    // Nothing to paint
                    break;
            }