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OpenRCT2/src/openrct2/ride/CableLift.cpp

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/*****************************************************************************
* Copyright (c) 2014-2020 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 "CableLift.h"
#include "../audio/audio.h"
#include "../rct12/RCT12.h"
#include "../util/Util.h"
#include "../world/EntityList.h"
#include "Ride.h"
#include "RideData.h"
#include "Track.h"
#include "Vehicle.h"
#include "VehicleData.h"
#include <algorithm>
Vehicle* cable_lift_segment_create(
Ride& ride, int32_t x, int32_t y, int32_t z, int32_t direction, uint16_t var_44, int32_t remaining_distance, bool head)
{
Vehicle* current = CreateEntity<Vehicle>();
current->ride = ride.id;
current->ride_subtype = OBJECT_ENTRY_INDEX_NULL;
if (head)
{
ride.cable_lift = current->sprite_index;
}
current->SubType = head ? Vehicle::Type::Head : Vehicle::Type::Tail;
current->var_44 = var_44;
current->remaining_distance = remaining_distance;
current->sprite_width = 10;
current->sprite_height_negative = 10;
current->sprite_height_positive = 10;
current->mass = 100;
current->num_seats = 0;
current->speed = 20;
current->powered_acceleration = 80;
current->velocity = 0;
current->acceleration = 0;
current->SwingSprite = 0;
current->SwingPosition = 0;
current->SwingSpeed = 0;
current->restraints_position = 0;
current->spin_sprite = 0;
current->spin_speed = 0;
current->sound2_flags = 0;
current->sound1_id = OpenRCT2::Audio::SoundId::Null;
current->sound2_id = OpenRCT2::Audio::SoundId::Null;
current->var_C4 = 0;
current->animation_frame = 0;
current->animationState = 0;
current->scream_sound_id = OpenRCT2::Audio::SoundId::Null;
current->Pitch = 0;
current->bank_rotation = 0;
for (auto& peep : current->peep)
{
peep = SPRITE_INDEX_NULL;
}
current->TrackSubposition = VehicleTrackSubposition::Default;
current->sprite_direction = direction << 3;
z = z * COORDS_Z_STEP;
current->TrackLocation = { x, y, z };
z += ride.GetRideTypeDescriptor().Heights.VehicleZOffset;
current->MoveTo({ 16, 16, z });
current->SetTrackType(TrackElemType::CableLiftHill);
current->SetTrackDirection(current->sprite_direction >> 3);
current->track_progress = 164;
current->update_flags = VEHICLE_UPDATE_FLAG_COLLISION_DISABLED;
current->SetState(Vehicle::Status::MovingToEndOfStation, 0);
current->num_peeps = 0;
current->next_free_seat = 0;
current->BoatLocation.SetNull();
current->IsCrashedVehicle = false;
return current;
}
void Vehicle::CableLiftUpdate()
{
switch (status)
{
case Vehicle::Status::MovingToEndOfStation:
CableLiftUpdateMovingToEndOfStation();
break;
case Vehicle::Status::WaitingForPassengers:
// Stays in this state until a train puts it into next state
break;
case Vehicle::Status::WaitingToDepart:
CableLiftUpdateWaitingToDepart();
break;
case Vehicle::Status::Departing:
CableLiftUpdateDeparting();
break;
case Vehicle::Status::Travelling:
CableLiftUpdateTravelling();
break;
case Vehicle::Status::Arriving:
CableLiftUpdateArriving();
break;
default:
break;
}
}
/**
*
* rct2: 0x006DF8A4
*/
void Vehicle::CableLiftUpdateMovingToEndOfStation()
{
if (velocity >= -439800)
acceleration = -2932;
if (velocity < -439800)
{
velocity -= velocity / 16;
acceleration = 0;
}
if (!(CableLiftUpdateTrackMotion() & VEHICLE_UPDATE_MOTION_TRACK_FLAG_VEHICLE_AT_STATION))
return;
velocity = 0;
acceleration = 0;
SetState(Vehicle::Status::WaitingForPassengers, sub_state);
}
/**
*
* rct2: 0x006DF8F1
*/
void Vehicle::CableLiftUpdateWaitingToDepart()
{
if (velocity >= -58640)
acceleration = -14660;
if (velocity < -58640)
{
velocity -= velocity / 16;
acceleration = 0;
}
CableLiftUpdateTrackMotion();
// Next check to see if the second part of the cable lift
// is at the front of the passenger vehicle to simulate the
// cable being attached underneath the train.
Vehicle* passengerVehicle = GetEntity<Vehicle>(cable_lift_target);
Vehicle* cableLiftSecondPart = GetEntity<Vehicle>(prev_vehicle_on_ride);
if (passengerVehicle == nullptr || cableLiftSecondPart == nullptr)
{
return;
}
int16_t distX = abs(passengerVehicle->x - cableLiftSecondPart->x);
int16_t distY = abs(passengerVehicle->y - cableLiftSecondPart->y);
if (distX + distY > 2)
return;
velocity = 0;
acceleration = 0;
SetState(Vehicle::Status::Departing, 0);
}
/**
*
* rct2: 0x006DF97A
*/
void Vehicle::CableLiftUpdateDeparting()
{
sub_state++;
if (sub_state < 16)
return;
Vehicle* passengerVehicle = GetEntity<Vehicle>(cable_lift_target);
if (passengerVehicle == nullptr)
{
return;
}
SetState(Vehicle::Status::Travelling, sub_state);
passengerVehicle->SetState(Vehicle::Status::TravellingCableLift, passengerVehicle->sub_state);
}
/**
*
* rct2: 0x006DF99C
*/
void Vehicle::CableLiftUpdateTravelling()
{
Vehicle* passengerVehicle = GetEntity<Vehicle>(cable_lift_target);
if (passengerVehicle == nullptr)
{
return;
}
velocity = std::min(passengerVehicle->velocity, 439800);
acceleration = 0;
if (passengerVehicle->HasUpdateFlag(VEHICLE_UPDATE_FLAG_BROKEN_TRAIN))
return;
if (!(CableLiftUpdateTrackMotion() & VEHICLE_UPDATE_MOTION_TRACK_FLAG_1))
return;
velocity = 0;
acceleration = 0;
SetState(Vehicle::Status::Arriving, 0);
}
/**
*
* rct2: 0x006DF9F0
*/
void Vehicle::CableLiftUpdateArriving()
{
sub_state++;
if (sub_state >= 64)
SetState(Vehicle::Status::MovingToEndOfStation, sub_state);
}
bool Vehicle::CableLiftUpdateTrackMotionForwards()
{
auto curRide = GetRide();
if (curRide == nullptr)
return false;
for (; remaining_distance >= 13962; _vehicleUnkF64E10++)
{
auto trackType = GetTrackType();
if (trackType == TrackElemType::CableLiftHill && track_progress == 160)
{
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_1;
}
uint16_t trackProgress = track_progress + 1;
uint16_t trackTotalProgress = GetTrackProgress();
if (trackProgress >= trackTotalProgress)
{
TileElement* trackElement = map_get_track_element_at_of_type_seq(TrackLocation, trackType, 0);
CoordsXYE output;
int32_t outputZ;
int32_t outputDirection;
auto input = CoordsXYE{ TrackLocation, trackElement };
if (!track_block_get_next(&input, &output, &outputZ, &outputDirection))
return false;
if (TrackPitchAndRollEnd(trackType) != TrackPitchAndRollStart(output.element->AsTrack()->GetTrackType()))
return false;
TrackLocation = { output, outputZ };
SetTrackDirection(outputDirection);
SetTrackType(output.element->AsTrack()->GetTrackType());
trackProgress = 0;
}
track_progress = trackProgress;
const auto moveInfo = GetMoveInfo();
auto unk = CoordsXYZ{ moveInfo->x, moveInfo->y, moveInfo->z } + TrackLocation;
uint8_t bx = 0;
unk.z += GetRideTypeDescriptor(curRide->type).Heights.VehicleZOffset;
if (unk.x != unk_F64E20.x)
bx |= (1 << 0);
if (unk.y != unk_F64E20.y)
bx |= (1 << 1);
if (unk.z != unk_F64E20.z)
bx |= (1 << 2);
remaining_distance -= dword_9A2930[bx];
unk_F64E20.x = unk.x;
unk_F64E20.y = unk.y;
unk_F64E20.z = unk.z;
sprite_direction = moveInfo->direction;
bank_rotation = moveInfo->bank_rotation;
Pitch = moveInfo->Pitch;
if (remaining_distance >= 13962)
{
acceleration += dword_9A2970[Pitch];
}
}
return true;
}
bool Vehicle::CableLiftUpdateTrackMotionBackwards()
{
auto curRide = GetRide();
if (curRide == nullptr)
return false;
for (; remaining_distance < 0; _vehicleUnkF64E10++)
{
uint16_t trackProgress = track_progress - 1;
if (static_cast<int16_t>(trackProgress) == -1)
{
auto trackType = GetTrackType();
TileElement* trackElement = map_get_track_element_at_of_type_seq(TrackLocation, trackType, 0);
auto input = CoordsXYE{ TrackLocation, trackElement };
track_begin_end output;
if (!track_block_get_previous(input, &output))
return false;
if (TrackPitchAndRollStart(trackType) != TrackPitchAndRollEnd(output.begin_element->AsTrack()->GetTrackType()))
return false;
TrackLocation = { output.begin_x, output.begin_y, output.begin_z };
SetTrackDirection(output.begin_direction);
SetTrackType(output.begin_element->AsTrack()->GetTrackType());
if (output.begin_element->AsTrack()->GetTrackType() == TrackElemType::EndStation)
{
_vehicleMotionTrackFlags = VEHICLE_UPDATE_MOTION_TRACK_FLAG_VEHICLE_AT_STATION;
}
uint16_t trackTotalProgress = GetTrackProgress();
trackProgress = trackTotalProgress - 1;
}
track_progress = trackProgress;
const auto moveInfo = GetMoveInfo();
auto unk = CoordsXYZ{ moveInfo->x, moveInfo->y, moveInfo->z } + TrackLocation;
uint8_t bx = 0;
unk.z += GetRideTypeDescriptor(curRide->type).Heights.VehicleZOffset;
if (unk.x != unk_F64E20.x)
bx |= (1 << 0);
if (unk.y != unk_F64E20.y)
bx |= (1 << 1);
if (unk.z != unk_F64E20.z)
bx |= (1 << 2);
remaining_distance += dword_9A2930[bx];
unk_F64E20.x = unk.x;
unk_F64E20.y = unk.y;
unk_F64E20.z = unk.z;
sprite_direction = moveInfo->direction;
bank_rotation = moveInfo->bank_rotation;
Pitch = moveInfo->Pitch;
if (remaining_distance < 0)
{
acceleration += dword_9A2970[Pitch];
}
}
return true;
}
/**
*
* rct2: 0x006DEF56
*/
int32_t Vehicle::CableLiftUpdateTrackMotion()
{
_vehicleF64E2C = 0;
gCurrentVehicle = this;
_vehicleMotionTrackFlags = 0;
_vehicleStationIndex = STATION_INDEX_NULL;
velocity += acceleration;
_vehicleVelocityF64E08 = velocity;
_vehicleVelocityF64E0C = (velocity / 1024) * 42;
Vehicle* frontVehicle = this;
if (velocity < 0)
{
frontVehicle = TrainTail();
}
_vehicleFrontVehicle = frontVehicle;
for (Vehicle* vehicle = frontVehicle; vehicle != nullptr;)
{
vehicle->acceleration = dword_9A2970[vehicle->Pitch];
_vehicleUnkF64E10 = 1;
vehicle->remaining_distance += _vehicleVelocityF64E0C;
if (vehicle->remaining_distance < 0 || vehicle->remaining_distance >= 13962)
{
unk_F64E20 = vehicle->GetLocation();
vehicle->Invalidate();
while (true)
{
if (vehicle->remaining_distance < 0)
{
if (vehicle->CableLiftUpdateTrackMotionBackwards())
{
break;
}
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_5;
_vehicleVelocityF64E0C -= vehicle->remaining_distance - 13962;
vehicle->remaining_distance = 13962;
vehicle->acceleration += dword_9A2970[vehicle->Pitch];
_vehicleUnkF64E10++;
continue;
}
if (vehicle->CableLiftUpdateTrackMotionForwards())
{
break;
}
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_5;
_vehicleVelocityF64E0C -= vehicle->remaining_distance + 1;
vehicle->remaining_distance = -1;
vehicle->acceleration += dword_9A2970[vehicle->Pitch];
_vehicleUnkF64E10++;
}
vehicle->MoveTo(unk_F64E20);
}
vehicle->acceleration /= _vehicleUnkF64E10;
if (_vehicleVelocityF64E08 >= 0)
{
vehicle = GetEntity<Vehicle>(vehicle->next_vehicle_on_train);
}
else
{
if (vehicle == this)
break;
vehicle = GetEntity<Vehicle>(vehicle->prev_vehicle_on_ride);
}
}
uint32_t vehicleCount = 0;
uint16_t massTotal = 0;
int32_t accelerationTotal = 0;
for (Vehicle* vehicle = GetEntity<Vehicle>(sprite_index); vehicle != nullptr;
vehicle = GetEntity<Vehicle>(vehicle->next_vehicle_on_train))
{
vehicleCount++;
massTotal += vehicle->mass;
accelerationTotal = add_clamp_int32_t(accelerationTotal, vehicle->acceleration);
}
int32_t newAcceleration = (accelerationTotal / vehicleCount) >> 9;
newAcceleration -= velocity >> 12;
int32_t edx = velocity >> 8;
edx *= edx;
if (velocity < 0)
{
edx = -edx;
}
edx >>= 4;
newAcceleration -= edx / massTotal;
acceleration = newAcceleration;
return _vehicleMotionTrackFlags;
}
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