Function aiCompanyAboutToBuildCheck

src/OpenLoco/src/Map/TileClearance.cpp:150–208

0x00462BB3 Vanilla function would return true with input esi not modified Vanilla function would return false with esi set to 0xFFFFFFFF if error text set or problem element if not set

    // Vanilla function would return true with input esi not modified
    // Vanilla function would return false with esi set to 0xFFFFFFFF if error text set or problem element if not set
    static ClearFuncResult aiCompanyAboutToBuildCheck(const World::TileElement& el)
    {
        auto* elSurface = el.as<SurfaceElement>();

        // 0x00462C02
        auto returnFunc = [](const CompanyId owner) -> ClearFuncResult {
            const auto updatingId = GameCommands::getUpdatingCompanyId();
            if (updatingId == CompanyId::neutral || !CompanyManager::isPlayerCompany(updatingId))
            {
                GameCommands::setErrorText(StringIds::another_company_is_about_to_build_here);
                return ClearFuncResult::collisionErrorSet;
            }
            if (owner == updatingId || CompanyManager::isPlayerCompany(owner))
            {
                return ClearFuncResult::collision;
            }
            auto* company = CompanyManager::get(owner);
            if ((company->challengeFlags & CompanyFlags::unk2) != CompanyFlags::none)
            {
                GameCommands::setErrorText(StringIds::another_company_is_about_to_build_here);
                return ClearFuncResult::collisionErrorSet;
            }
            // Modification from vanilla
            company->challengeFlags |= CompanyFlags::unk1;
            return ClearFuncResult::noCollision;
        };

        if (elSurface == nullptr)
        {
            CompanyId owner = TileManager::getTileOwner(el);
            if (owner == CompanyId::null)
            {
                return ClearFuncResult::noCollision;
            }

            return returnFunc(owner);
        }
        else
        {
            auto* elp = &el;
            while (!elp->isLast())
            {
                elp = elp->next();
                if (!elp->isAiAllocated())
                {
                    continue;
                }
                const auto owner = TileManager::getTileOwner(*elp);
                if (owner == CompanyId::null)
                {
                    continue;
                }

                return returnFunc(owner);
            }
            GameCommands::setErrorText(StringIds::another_company_is_about_to_build_here);
            return ClearFuncResult::collisionErrorSet;
        }