Function updateBuildingAnimation2

src/OpenLoco/src/Map/BuildingElement.cpp:243–296

0x0042E646

    // 0x0042E646
    bool updateBuildingAnimation2(const Animation& anim)
    {
        auto tile = TileManager::get(anim.pos);
        BuildingElement* elBuilding = nullptr;
        for (auto& el : tile)
        {
            elBuilding = el.as<BuildingElement>();
            if (elBuilding == nullptr)
            {
                continue;
            }
            if (elBuilding->baseZ() != anim.baseZ)
            {
                continue;
            }
            break;
        }

        if (elBuilding == nullptr)
        {
            return true;
        }

        auto* buildingObj = elBuilding->getObject();
        const auto parts = buildingObj->getBuildingParts(elBuilding->variation());
        const auto partAnimations = buildingObj->getBuildingPartAnimations();
        uint8_t slowestSpeed = 0xFF;
        uint8_t numFrames = 0;
        for (auto part : parts)
        {
            auto& partAnim = partAnimations[part];
            const uint8_t animSpeed = partAnim.animationSpeed & ~(1U << 7);
            if (partAnim.numFrames == 0)
            {
                continue;
            }
            numFrames |= partAnim.numFrames;
            if (partAnim.numFrames == 1)
            {
                continue;
            }
            slowestSpeed = std::min(slowestSpeed, animSpeed);
        }
        if (numFrames <= 1)
        {
            return true;
        }
        const auto speedMask = ((1 << slowestSpeed) - 1);
        if (!(ScenarioManager::getScenarioTicks() & speedMask))
        {
            Ui::ViewportManager::invalidate(anim.pos, elBuilding->baseHeight(), elBuilding->clearHeight(), ZoomLevel::quarter);
        }
        return false;
    }
}