/*****************************************************************************
 * Copyright (c) 2014-2019 OpenRCT2 developers
 *
 * For a complete list of all authors, please refer to contributors.md
 * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
 *
 * OpenRCT2 is licensed under the GNU General Public License version 3.
 *****************************************************************************/

#include "Scenario.h"

#include "../Cheats.h"
#include "../Context.h"
#include "../FileClassifier.h"
#include "../Game.h"
#include "../GameState.h"
#include "../OpenRCT2.h"
#include "../ParkImporter.h"
#include "../audio/audio.h"
#include "../config/Config.h"
#include "../core/Guard.hpp"
#include "../core/Random.hpp"
#include "../interface/Viewport.h"
#include "../localisation/Date.h"
#include "../localisation/Localisation.h"
#include "../management/Award.h"
#include "../management/Finance.h"
#include "../management/Marketing.h"
#include "../management/NewsItem.h"
#include "../management/Research.h"
#include "../network/network.h"
#include "../object/Object.h"
#include "../object/ObjectList.h"
#include "../peep/Staff.h"
#include "../platform/platform.h"
#include "../rct1/RCT1.h"
#include "../rct12/RCT12.h"
#include "../ride/Ride.h"
#include "../ride/Track.h"
#include "../util/SawyerCoding.h"
#include "../util/Util.h"
#include "../windows/Intent.h"
#include "../world/Climate.h"
#include "../world/Map.h"
#include "../world/Park.h"
#include "../world/Scenery.h"
#include "../world/Sprite.h"
#include "../world/Water.h"
#include "ScenarioRepository.h"
#include "ScenarioSources.h"

#include <algorithm>
#include <bitset>

const rct_string_id ScenarioCategoryStringIds[SCENARIO_CATEGORY_COUNT] = {
    STR_BEGINNER_PARKS, STR_CHALLENGING_PARKS,    STR_EXPERT_PARKS, STR_REAL_PARKS, STR_OTHER_PARKS,

    STR_DLC_PARKS,      STR_BUILD_YOUR_OWN_PARKS,
};

rct_s6_info gS6Info;
std::string gScenarioName;
std::string gScenarioDetails;
std::string gScenarioCompletedBy;
std::string gScenarioSavePath;
char gScenarioExpansionPacks[3256];
bool gFirstTimeSaving = true;
uint16_t gSavedAge;
uint32_t gLastAutoSaveUpdate = 0;

uint32_t gScenarioTicks;
random_engine_t gScenarioRand;

uint8_t gScenarioObjectiveType;
uint8_t gScenarioObjectiveYear;
uint16_t gScenarioObjectiveNumGuests;
money32 gScenarioObjectiveCurrency;

uint16_t gScenarioParkRatingWarningDays;
money32 gScenarioCompletedCompanyValue;
money32 gScenarioCompanyValueRecord;

char gScenarioFileName[MAX_PATH];

static void scenario_objective_check();

using namespace OpenRCT2;

void scenario_begin()
{
    game_load_init();

    // Set the scenario pseudo-random seeds
    Random::Rct2::Seed s{ 0x1234567F ^ platform_get_ticks(), 0x789FABCD ^ platform_get_ticks() };
    gScenarioRand.seed(s);

    gParkFlags &= ~PARK_FLAGS_NO_MONEY;
    if (gParkFlags & PARK_FLAGS_NO_MONEY_SCENARIO)
        gParkFlags |= PARK_FLAGS_NO_MONEY;
    research_reset_current_item();
    scenery_set_default_placement_configuration();
    news_item_init_queue();
    if (gScenarioObjectiveType != OBJECTIVE_NONE && !gLoadKeepWindowsOpen)
        context_open_window_view(WV_PARK_OBJECTIVE);

    auto& park = GetContext()->GetGameState()->GetPark();
    gParkRating = park.CalculateParkRating();
    gParkValue = park.CalculateParkValue();
    gCompanyValue = park.CalculateCompanyValue();
    gHistoricalProfit = gInitialCash - gBankLoan;
    gCash = gInitialCash;

    gScenarioDetails = std::string_view(gS6Info.details, 256);
    gScenarioName = std::string_view(gS6Info.name, 64);

    {
        utf8 normalisedName[64];
        ScenarioSources::NormaliseName(normalisedName, sizeof(normalisedName), gS6Info.name);

        rct_string_id localisedStringIds[3];
        if (language_get_localised_scenario_strings(normalisedName, localisedStringIds))
        {
            if (localisedStringIds[0] != STR_NONE)
            {
                gScenarioName = language_get_string(localisedStringIds[0]);
            }
            if (localisedStringIds[1] != STR_NONE)
            {
                park.Name = language_get_string(localisedStringIds[1]);
            }
            if (localisedStringIds[2] != STR_NONE)
            {
                gScenarioDetails = language_get_string(localisedStringIds[2]);
            }
        }
    }

    // Set the last saved game path
    char savePath[MAX_PATH];
    platform_get_user_directory(savePath, "save", sizeof(savePath));
    safe_strcat_path(savePath, park.Name.c_str(), sizeof(savePath));
    path_append_extension(savePath, ".sv6", sizeof(savePath));
    gScenarioSavePath = savePath;

    gCurrentExpenditure = 0;
    gCurrentProfit = 0;
    gWeeklyProfitAverageDividend = 0;
    gWeeklyProfitAverageDivisor = 0;
    gScenarioCompletedCompanyValue = MONEY32_UNDEFINED;
    gTotalAdmissions = 0;
    gTotalIncomeFromAdmissions = 0;
    gScenarioCompletedBy = "?";
    park.ResetHistories();
    finance_reset_history();
    award_reset();
    reset_all_ride_build_dates();
    date_reset();
    duck_remove_all();
    park_calculate_size();
    map_count_remaining_land_rights();
    staff_reset_stats();
    gLastEntranceStyle = 0;
    gMarketingCampaigns.clear();
    gParkRatingCasualtyPenalty = 0;

    // Open park with free entry when there is no money
    if (gParkFlags & PARK_FLAGS_NO_MONEY)
    {
        gParkFlags |= PARK_FLAGS_PARK_OPEN;
        gParkEntranceFee = 0;
    }

    gParkFlags |= PARK_FLAGS_SPRITES_INITIALISED;

    gScreenAge = 0;
}

static void scenario_end()
{
    window_close_by_class(WC_DROPDOWN);
    window_close_all_except_flags(WF_STICK_TO_BACK | WF_STICK_TO_FRONT);
    context_open_window_view(WV_PARK_OBJECTIVE);
}

/**
 *
 *  rct2: 0x0066A752
 */
void scenario_failure()
{
    gScenarioCompletedCompanyValue = 0x80000001;
    scenario_end();
}

/**
 *
 *  rct2: 0x0066A75E
 */
void scenario_success()
{
    const money32 companyValue = gCompanyValue;

    gScenarioCompletedCompanyValue = companyValue;
    peep_applause();

    if (scenario_repository_try_record_highscore(gScenarioFileName, companyValue, nullptr))
    {
        // Allow name entry
        gParkFlags |= PARK_FLAGS_SCENARIO_COMPLETE_NAME_INPUT;
        gScenarioCompanyValueRecord = companyValue;
    }
    scenario_end();
}

/**
 *
 *  rct2: 0x006695E8
 */
void scenario_success_submit_name(const char* name)
{
    if (scenario_repository_try_record_highscore(gScenarioFileName, gScenarioCompanyValueRecord, name))
    {
        gScenarioCompletedBy = name;
    }
    gParkFlags &= ~PARK_FLAGS_SCENARIO_COMPLETE_NAME_INPUT;
}

/**
 * Send a warning when entrance price is too high.
 *  rct2: 0x0066A80E
 */
static void scenario_entrance_fee_too_high_check()
{
    money16 totalRideValueForMoney = gTotalRideValueForMoney;
    money16 max_fee = totalRideValueForMoney + (totalRideValueForMoney / 2);

    if ((gParkFlags & PARK_FLAGS_PARK_OPEN) && park_get_entrance_fee() > max_fee)
    {
        if (!gParkEntrances.empty())
        {
            const auto& entrance = gParkEntrances[0];
            auto x = entrance.x + 16;
            auto y = entrance.y + 16;

            uint32_t packed_xy = (y << 16) | x;
            if (gConfigNotifications.park_warnings)
            {
                news_item_add_to_queue(NEWS_ITEM_BLANK, STR_ENTRANCE_FEE_TOO_HI, packed_xy);
            }
        }
    }
}

void scenario_autosave_check()
{
    if (gLastAutoSaveUpdate == AUTOSAVE_PAUSE)
        return;

    // Milliseconds since last save
    uint32_t timeSinceSave = platform_get_ticks() - gLastAutoSaveUpdate;

    bool shouldSave = false;
    switch (gConfigGeneral.autosave_frequency)
    {
        case AUTOSAVE_EVERY_MINUTE:
            shouldSave = timeSinceSave >= 1 * 60 * 1000;
            break;
        case AUTOSAVE_EVERY_5MINUTES:
            shouldSave = timeSinceSave >= 5 * 60 * 1000;
            break;
        case AUTOSAVE_EVERY_15MINUTES:
            shouldSave = timeSinceSave >= 15 * 60 * 1000;
            break;
        case AUTOSAVE_EVERY_30MINUTES:
            shouldSave = timeSinceSave >= 30 * 60 * 1000;
            break;
        case AUTOSAVE_EVERY_HOUR:
            shouldSave = timeSinceSave >= 60 * 60 * 1000;
            break;
    }

    if (shouldSave)
    {
        gLastAutoSaveUpdate = AUTOSAVE_PAUSE;
        game_autosave();
    }
}

static void scenario_day_update()
{
    finance_update_daily_profit();
    peep_update_days_in_queue();
    switch (gScenarioObjectiveType)
    {
        case OBJECTIVE_10_ROLLERCOASTERS:
        case OBJECTIVE_GUESTS_AND_RATING:
        case OBJECTIVE_10_ROLLERCOASTERS_LENGTH:
        case OBJECTIVE_FINISH_5_ROLLERCOASTERS:
        case OBJECTIVE_REPLAY_LOAN_AND_PARK_VALUE:
            scenario_objective_check();
            break;
        default:
            if (gConfigGeneral.allow_early_completion)
                scenario_objective_check();
            break;
    }

    // Lower the casualty penalty
    uint16_t casualtyPenaltyModifier = (gParkFlags & PARK_FLAGS_NO_MONEY) ? 40 : 7;
    gParkRatingCasualtyPenalty = std::max(0, gParkRatingCasualtyPenalty - casualtyPenaltyModifier);

    auto intent = Intent(INTENT_ACTION_UPDATE_DATE);
    context_broadcast_intent(&intent);
}

static void scenario_week_update()
{
    int32_t month = date_get_month(gDateMonthsElapsed);

    finance_pay_wages();
    finance_pay_research();
    finance_pay_interest();
    marketing_update();
    peep_problem_warnings_update();
    ride_check_all_reachable();
    ride_update_favourited_stat();

    auto water_type = (rct_water_type*)object_entry_get_chunk(OBJECT_TYPE_WATER, 0);

    if (month <= MONTH_APRIL && water_type != nullptr && water_type->flags & WATER_FLAGS_ALLOW_DUCKS)
    {
        // 100 attempts at finding some water to create a few ducks at
        for (int32_t i = 0; i < 100; i++)
        {
            if (scenario_create_ducks())
                break;
        }
    }
}

static void scenario_fortnight_update()
{
    finance_pay_ride_upkeep();
}

static void scenario_month_update()
{
    finance_shift_expenditure_table();
    scenario_objective_check();
    scenario_entrance_fee_too_high_check();
    award_update_all();
}

static void scenario_update_daynight_cycle()
{
    float currentDayNightCycle = gDayNightCycle;
    gDayNightCycle = 0;

    if (gScreenFlags == SCREEN_FLAGS_PLAYING && gConfigGeneral.day_night_cycle)
    {
        float monthFraction = gDateMonthTicks / (float)0x10000;
        if (monthFraction < (1 / 8.0f))
        {
            gDayNightCycle = 0.0f;
        }
        else if (monthFraction < (3 / 8.0f))
        {
            gDayNightCycle = (monthFraction - (1 / 8.0f)) / (2 / 8.0f);
        }
        else if (monthFraction < (5 / 8.0f))
        {
            gDayNightCycle = 1.0f;
        }
        else if (monthFraction < (7 / 8.0f))
        {
            gDayNightCycle = 1.0f - ((monthFraction - (5 / 8.0f)) / (2 / 8.0f));
        }
        else
        {
            gDayNightCycle = 0.0f;
        }
    }

    // Only update palette if day / night cycle has changed
    if (gDayNightCycle != currentDayNightCycle)
    {
        platform_update_palette(gGamePalette, 10, 236);
    }
}

/**
 * Scenario and finance related update iteration.
 *  rct2: 0x006C44B1
 */
void scenario_update()
{
    if (gScreenFlags == SCREEN_FLAGS_PLAYING)
    {
        if (date_is_day_start(gDateMonthTicks))
        {
            scenario_day_update();
        }
        if (date_is_week_start(gDateMonthTicks))
        {
            scenario_week_update();
        }
        if (date_is_fortnight_start(gDateMonthTicks))
        {
            scenario_fortnight_update();
        }
        if (date_is_month_start(gDateMonthTicks))
        {
            scenario_month_update();
        }
    }
    scenario_update_daynight_cycle();
}
/**
 *
 *  rct2: 0x006744A9
 */
bool scenario_create_ducks()
{
    // Check NxN area around centre tile defined by SquareSize
    constexpr int32_t SquareSize = 7;
    constexpr int32_t SquareCentre = SquareSize / 2;
    constexpr int32_t SquareTileSize = SquareCentre * 32;

    CoordsXY centrePos;
    centrePos.x = SquareTileSize + (scenario_rand_max(MAXIMUM_MAP_SIZE_TECHNICAL - SquareCentre) * 32);
    centrePos.y = SquareTileSize + (scenario_rand_max(MAXIMUM_MAP_SIZE_TECHNICAL - SquareCentre) * 32);

    Guard::Assert(map_is_location_valid(centrePos));

    if (!map_is_location_in_park(centrePos))
        return false;

    int32_t centreWaterZ = (tile_element_water_height(centrePos));
    if (centreWaterZ == 0)
        return false;

    CoordsXY innerPos{ centrePos.x - (32 * SquareCentre), centrePos.y - (32 * SquareCentre) };
    int32_t waterTiles = 0;
    for (int32_t y = 0; y < SquareSize; y++)
    {
        for (int32_t x = 0; x < SquareSize; x++)
        {
            if (!map_is_location_valid(innerPos))
                continue;

            if (!map_is_location_in_park(innerPos))
                continue;

            int32_t waterZ = (tile_element_water_height(innerPos));
            if (waterZ == centreWaterZ)
                waterTiles++;

            innerPos.x += 32;
        }
        innerPos.x -= SquareSize * 32;
        innerPos.y += 32;
    }

    // Must be at least 25 water tiles of the same height in 7x7 area
    if (waterTiles < 25)
        return false;

    // Set x, y to the centre of the tile
    centrePos.x += 16;
    centrePos.y += 16;

    int32_t duckCount = (scenario_rand() & 3) + 2;
    for (int32_t i = 0; i < duckCount; i++)
    {
        int32_t r = scenario_rand();
        innerPos.x = (r >> 16) & (SquareTileSize - 1);
        innerPos.y = (r & 0xFFFF) & (SquareTileSize - 1);

        CoordsXY targetPos{ centrePos.x + innerPos.x - SquareTileSize, centrePos.y + innerPos.y - SquareTileSize };

        Guard::Assert(map_is_location_valid(targetPos));
        create_duck(targetPos);
    }

    return true;
}

const random_engine_t::state_type& scenario_rand_state()
{
    return gScenarioRand.state();
};

void scenario_rand_seed(random_engine_t::result_type s0, random_engine_t::result_type s1)
{
    Random::Rct2::Seed s{ s0, s1 };
    gScenarioRand.seed(s);
}

/**
 *
 *  rct2: 0x006E37D2
 *
 * @return eax
 */
random_engine_t::result_type scenario_rand()
{
    return gScenarioRand();
}

uint32_t scenario_rand_max(uint32_t max)
{
    if (max < 2)
        return 0;
    if ((max & (max - 1)) == 0)
        return scenario_rand() & (max - 1);
    uint32_t rand, cap = ~((uint32_t)0) - (~((uint32_t)0) % max) - 1;
    do
    {
        rand = scenario_rand();
    } while (rand > cap);
    return rand % max;
}

/**
 * Prepare rides, for the finish five rollercoasters objective.
 *  rct2: 0x006788F7
 */
static bool scenario_prepare_rides_for_save()
{
    int32_t isFiveCoasterObjective = gScenarioObjectiveType == OBJECTIVE_FINISH_5_ROLLERCOASTERS;
    uint8_t rcs = 0;

    for (auto& ride : GetRideManager())
    {
        const auto* rideEntry = ride.GetRideEntry();
        if (rideEntry != nullptr)
        {
            // If there are more than 5 roller coasters, only mark the first five.
            if (isFiveCoasterObjective && (ride_entry_has_category(rideEntry, RIDE_CATEGORY_ROLLERCOASTER) && rcs < 5))
            {
                ride.lifecycle_flags |= RIDE_LIFECYCLE_INDESTRUCTIBLE_TRACK;
                rcs++;
            }
            else
            {
                ride.lifecycle_flags &= ~RIDE_LIFECYCLE_INDESTRUCTIBLE_TRACK;
            }
        }
    }

    if (isFiveCoasterObjective && rcs < 5)
    {
        gGameCommandErrorText = STR_NOT_ENOUGH_ROLLER_COASTERS;
        return false;
    }

    bool markTrackAsIndestructible;
    tile_element_iterator it;
    tile_element_iterator_begin(&it);
    do
    {
        if (it.element->GetType() == TILE_ELEMENT_TYPE_TRACK)
        {
            markTrackAsIndestructible = false;

            if (isFiveCoasterObjective)
            {
                auto ride = get_ride(it.element->AsTrack()->GetRideIndex());

                // In the previous step, this flag was set on the first five roller coasters.
                if (ride != nullptr && ride->lifecycle_flags & RIDE_LIFECYCLE_INDESTRUCTIBLE_TRACK)
                {
                    markTrackAsIndestructible = true;
                }
            }

            it.element->AsTrack()->SetIsIndestructible(markTrackAsIndestructible);
        }
    } while (tile_element_iterator_next(&it));

    return true;
}

/**
 *
 *  rct2: 0x006726C7
 */
bool scenario_prepare_for_save()
{
    auto& park = GetContext()->GetGameState()->GetPark();
    auto parkName = park.Name.c_str();

    gS6Info.entry.flags = 255;
    if (gS6Info.name[0] == 0)
        String::Set(gS6Info.name, sizeof(gS6Info.name), parkName);

    gS6Info.objective_type = gScenarioObjectiveType;
    gS6Info.objective_arg_1 = gScenarioObjectiveYear;
    gS6Info.objective_arg_2 = gScenarioObjectiveCurrency;
    gS6Info.objective_arg_3 = gScenarioObjectiveNumGuests;

    // This can return false if the goal is 'Finish 5 roller coaster' and there are too few.
    if (!scenario_prepare_rides_for_save())
    {
        return false;
    }

    if (gScenarioObjectiveType == OBJECTIVE_GUESTS_AND_RATING)
        gParkFlags |= PARK_FLAGS_PARK_OPEN;

    // Fix #2385: saved scenarios did not initialise temperatures to selected climate
    climate_reset(gClimate);

    return true;
}

/**
 * Modifies the given S6 data so that ghost elements, rides with no track elements or unused banners / user strings are saved.
 */
void scenario_fix_ghosts(rct_s6_data* s6)
{
    // Build tile pointer cache (needed to get the first element at a certain location)
    RCT12TileElement* tilePointers[MAX_TILE_TILE_ELEMENT_POINTERS];
    for (size_t i = 0; i < MAX_TILE_TILE_ELEMENT_POINTERS; i++)
    {
        tilePointers[i] = TILE_UNDEFINED_TILE_ELEMENT;
    }

    RCT12TileElement* tileElement = s6->tile_elements;
    RCT12TileElement** tile = tilePointers;
    for (size_t y = 0; y < MAXIMUM_MAP_SIZE_TECHNICAL; y++)
    {
        for (size_t x = 0; x < MAXIMUM_MAP_SIZE_TECHNICAL; x++)
        {
            *tile++ = tileElement;
            while (!(tileElement++)->IsLastForTile())
                ;
        }
    }

    // Remove all ghost elements
    RCT12TileElement* destinationElement = s6->tile_elements;

    for (int32_t y = 0; y < MAXIMUM_MAP_SIZE_TECHNICAL; y++)
    {
        for (int32_t x = 0; x < MAXIMUM_MAP_SIZE_TECHNICAL; x++)
        {
            // This is the equivalent of map_get_first_element_at(x, y), but on S6 data.
            RCT12TileElement* originalElement = tilePointers[x + y * MAXIMUM_MAP_SIZE_TECHNICAL];
            do
            {
                if (originalElement->IsGhost())
                {
                    BannerIndex bannerIndex = originalElement->GetBannerIndex();
                    if (bannerIndex != BANNER_INDEX_NULL)
                    {
                        auto banner = &s6->banners[bannerIndex];
                        if (banner->type != BANNER_NULL)
                        {
                            banner->type = BANNER_NULL;
                            if (is_user_string_id(banner->string_idx))
                                s6->custom_strings[(banner->string_idx % RCT12_MAX_USER_STRINGS)][0] = 0;
                        }
                    }
                }
                else
                {
                    *destinationElement++ = *originalElement;
                }
            } while (!(originalElement++)->IsLastForTile());

            // Set last element flag in case the original last element was never added
            (destinationElement - 1)->flags |= TILE_ELEMENT_FLAG_LAST_TILE;
        }
    }
}

static void ride_all_has_any_track_elements(std::array<bool, RCT12_MAX_RIDES_IN_PARK>& rideIndexArray)
{
    tile_element_iterator it;
    tile_element_iterator_begin(&it);
    while (tile_element_iterator_next(&it))
    {
        if (it.element->GetType() != TILE_ELEMENT_TYPE_TRACK)
            continue;
        if (it.element->IsGhost())
            continue;

        rideIndexArray[it.element->AsTrack()->GetRideIndex()] = true;
    }
}

void scenario_remove_trackless_rides(rct_s6_data* s6)
{
    std::array<bool, RCT12_MAX_RIDES_IN_PARK> rideHasTrack{};
    ride_all_has_any_track_elements(rideHasTrack);
    for (int32_t i = 0; i < RCT12_MAX_RIDES_IN_PARK; i++)
    {
        auto ride = &s6->rides[i];
        if (rideHasTrack[i] || ride->type == RIDE_TYPE_NULL)
        {
            continue;
        }

        ride->type = RIDE_TYPE_NULL;
        if (is_user_string_id(ride->name))
        {
            s6->custom_strings[(ride->name % RCT12_MAX_USER_STRINGS)][0] = 0;
        }
    }
}

static void scenario_objective_check_guests_by()
{
    uint8_t objectiveYear = gScenarioObjectiveYear;
    int16_t parkRating = gParkRating;
    int16_t guestsInPark = gNumGuestsInPark;
    int16_t objectiveGuests = gScenarioObjectiveNumGuests;
    int16_t currentMonthYear = gDateMonthsElapsed;

    if (currentMonthYear == MONTH_COUNT * objectiveYear || gConfigGeneral.allow_early_completion)
    {
        if (parkRating >= 600 && guestsInPark >= objectiveGuests)
        {
            scenario_success();
        }
        else if (currentMonthYear == MONTH_COUNT * objectiveYear)
        {
            scenario_failure();
        }
    }
}

static void scenario_objective_check_park_value_by()
{
    uint8_t objectiveYear = gScenarioObjectiveYear;
    int16_t currentMonthYear = gDateMonthsElapsed;
    money32 objectiveParkValue = gScenarioObjectiveCurrency;
    money32 parkValue = gParkValue;

    if (currentMonthYear == MONTH_COUNT * objectiveYear || gConfigGeneral.allow_early_completion)
    {
        if (parkValue >= objectiveParkValue)
        {
            scenario_success();
        }
        else if (currentMonthYear == MONTH_COUNT * objectiveYear)
        {
            scenario_failure();
        }
    }
}

/**
 * Checks if there are 10 rollercoasters of different subtype with
 * excitement >= 600 .
 * rct2:
 **/
static void scenario_objective_check_10_rollercoasters()
{
    auto rcs = 0;
    std::bitset<MAX_RIDE_OBJECTS> type_already_counted;
    for (const auto& ride : GetRideManager())
    {
        if (ride.status == RIDE_STATUS_OPEN && ride.excitement >= RIDE_RATING(6, 00) && ride.subtype != RIDE_ENTRY_INDEX_NULL)
        {
            auto rideEntry = ride.GetRideEntry();
            if (rideEntry != nullptr)
            {
                if (ride_entry_has_category(rideEntry, RIDE_CATEGORY_ROLLERCOASTER) && !type_already_counted[ride.subtype])
                {
                    type_already_counted[ride.subtype] = true;
                    rcs++;
                }
            }
        }
    }
    if (rcs >= 10)
    {
        scenario_success();
    }
}

/**
 *
 *  rct2: 0x0066A13C
 */
static void scenario_objective_check_guests_and_rating()
{
    if (gParkRating < 700 && gDateMonthsElapsed >= 1)
    {
        gScenarioParkRatingWarningDays++;
        if (gScenarioParkRatingWarningDays == 1)
        {
            if (gConfigNotifications.park_rating_warnings)
            {
                news_item_add_to_queue(NEWS_ITEM_GRAPH, STR_PARK_RATING_WARNING_4_WEEKS_REMAINING, 0);
            }
        }
        else if (gScenarioParkRatingWarningDays == 8)
        {
            if (gConfigNotifications.park_rating_warnings)
            {
                news_item_add_to_queue(NEWS_ITEM_GRAPH, STR_PARK_RATING_WARNING_3_WEEKS_REMAINING, 0);
            }
        }
        else if (gScenarioParkRatingWarningDays == 15)
        {
            if (gConfigNotifications.park_rating_warnings)
            {
                news_item_add_to_queue(NEWS_ITEM_GRAPH, STR_PARK_RATING_WARNING_2_WEEKS_REMAINING, 0);
            }
        }
        else if (gScenarioParkRatingWarningDays == 22)
        {
            if (gConfigNotifications.park_rating_warnings)
            {
                news_item_add_to_queue(NEWS_ITEM_GRAPH, STR_PARK_RATING_WARNING_1_WEEK_REMAINING, 0);
            }
        }
        else if (gScenarioParkRatingWarningDays == 29)
        {
            news_item_add_to_queue(NEWS_ITEM_GRAPH, STR_PARK_HAS_BEEN_CLOSED_DOWN, 0);
            gParkFlags &= ~PARK_FLAGS_PARK_OPEN;
            scenario_failure();
            gGuestInitialHappiness = 50;
        }
    }
    else if (gScenarioCompletedCompanyValue != (money32)0x80000001)
    {
        gScenarioParkRatingWarningDays = 0;
    }

    if (gParkRating >= 700)
        if (gNumGuestsInPark >= gScenarioObjectiveNumGuests)
            scenario_success();
}

static void scenario_objective_check_monthly_ride_income()
{
    money32 lastMonthRideIncome = gExpenditureTable[1][RCT_EXPENDITURE_TYPE_PARK_RIDE_TICKETS];
    if (lastMonthRideIncome >= gScenarioObjectiveCurrency)
    {
        scenario_success();
    }
}

/**
 * Checks if there are 10 rollercoasters of different subtype with
 * excitement > 700 and a minimum length;
 *  rct2: 0x0066A6B5
 */
static void scenario_objective_check_10_rollercoasters_length()
{
    const auto objective_length = gScenarioObjectiveNumGuests;
    std::bitset<MAX_RIDE_OBJECTS> type_already_counted;
    auto rcs = 0;
    for (const auto& ride : GetRideManager())
    {
        if (ride.status == RIDE_STATUS_OPEN && ride.excitement >= RIDE_RATING(7, 00) && ride.subtype != RIDE_ENTRY_INDEX_NULL)
        {
            auto rideEntry = ride.GetRideEntry();
            if (rideEntry != nullptr)
            {
                if (ride_entry_has_category(rideEntry, RIDE_CATEGORY_ROLLERCOASTER) && !type_already_counted[ride.subtype])
                {
                    if ((ride_get_total_length(&ride) >> 16) > objective_length)
                    {
                        type_already_counted[ride.subtype] = true;
                        rcs++;
                    }
                }
            }
        }
    }
    if (rcs >= 10)
    {
        scenario_success();
    }
}

static void scenario_objective_check_finish_5_rollercoasters()
{
    const auto objectiveRideExcitement = gScenarioObjectiveCurrency;

    // Originally, this did not check for null rides, neither did it check if
    // the rides are even rollercoasters, never mind the right rollercoasters to be finished.
    auto rcs = 0;
    for (const auto& ride : GetRideManager())
    {
        if (ride.status != RIDE_STATUS_CLOSED && ride.excitement >= objectiveRideExcitement)
        {
            auto rideEntry = ride.GetRideEntry();
            if (rideEntry != nullptr)
            {
                if ((ride.lifecycle_flags & RIDE_LIFECYCLE_INDESTRUCTIBLE_TRACK)
                    && ride_entry_has_category(rideEntry, RIDE_CATEGORY_ROLLERCOASTER))
                {
                    rcs++;
                }
            }
        }
    }
    if (rcs >= 5)
    {
        scenario_success();
    }
}

static void scenario_objective_check_replay_loan_and_park_value()
{
    money32 objectiveParkValue = gScenarioObjectiveCurrency;
    money32 parkValue = gParkValue;
    money32 currentLoan = gBankLoan;

    if (currentLoan <= 0 && parkValue >= objectiveParkValue)
        scenario_success();
}

static void scenario_objective_check_monthly_food_income()
{
    money32* lastMonthExpenditure = gExpenditureTable[1];
    int32_t lastMonthProfit = lastMonthExpenditure[RCT_EXPENDITURE_TYPE_SHOP_SHOP_SALES]
        + lastMonthExpenditure[RCT_EXPENDITURE_TYPE_SHOP_STOCK] + lastMonthExpenditure[RCT_EXPENDITURE_TYPE_FOODDRINK_SALES]
        + lastMonthExpenditure[RCT_EXPENDITURE_TYPE_FOODDRINK_STOCK];

    if (lastMonthProfit >= gScenarioObjectiveCurrency)
    {
        scenario_success();
    }
}

/**
 * Checks the win/lose conditions of the current objective.
 *  rct2: 0x0066A4B2
 */
static void scenario_objective_check()
{
    if (gScenarioCompletedCompanyValue != MONEY32_UNDEFINED)
    {
        return;
    }

    switch (gScenarioObjectiveType)
    {
        case OBJECTIVE_GUESTS_BY:
            scenario_objective_check_guests_by();
            break;
        case OBJECTIVE_PARK_VALUE_BY:
            scenario_objective_check_park_value_by();
            break;
        case OBJECTIVE_10_ROLLERCOASTERS:
            scenario_objective_check_10_rollercoasters();
            break;
        case OBJECTIVE_GUESTS_AND_RATING:
            scenario_objective_check_guests_and_rating();
            break;
        case OBJECTIVE_MONTHLY_RIDE_INCOME:
            scenario_objective_check_monthly_ride_income();
            break;
        case OBJECTIVE_10_ROLLERCOASTERS_LENGTH:
            scenario_objective_check_10_rollercoasters_length();
            break;
        case OBJECTIVE_FINISH_5_ROLLERCOASTERS:
            scenario_objective_check_finish_5_rollercoasters();
            break;
        case OBJECTIVE_REPLAY_LOAN_AND_PARK_VALUE:
            scenario_objective_check_replay_loan_and_park_value();
            break;
        case OBJECTIVE_MONTHLY_FOOD_INCOME:
            scenario_objective_check_monthly_food_income();
            break;
    }
}