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OpenRCT2/src/openrct2/ride/CableLift.cpp

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#pragma region Copyright (c) 2014-2017 OpenRCT2 Developers
/*****************************************************************************
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
* For more information, visit https://github.com/OpenRCT2/OpenRCT2
*
* OpenRCT2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* A full copy of the GNU General Public License can be found in licence.txt
*****************************************************************************/
#pragma endregion
#include "../core/Math.hpp"
#include "../rct12/RCT12.h"
#include "../util/Util.h"
#include "../world/Sprite.h"
#include "CableLift.h"
#include "Ride.h"
#include "Track.h"
#include "RideData.h"
#include "VehicleData.h"
static void cable_lift_update_moving_to_end_of_station(rct_vehicle * vehicle);
static void cable_lift_update_waiting_to_depart(rct_vehicle * vehicle);
static void cable_lift_update_departing(rct_vehicle * vehicle);
static void cable_lift_update_travelling(rct_vehicle * vehicle);
static void cable_lift_update_arriving(rct_vehicle * vehicle);
rct_vehicle * cable_lift_segment_create(sint32 rideIndex,
sint32 x,
sint32 y,
sint32 z,
sint32 direction,
uint16 var_44,
sint32 remaining_distance,
bool head)
{
Ride * ride = get_ride(rideIndex);
rct_vehicle * current = &(create_sprite(1)->vehicle);
current->sprite_identifier = SPRITE_IDENTIFIER_VEHICLE;
current->ride = rideIndex;
current->ride_subtype = RIDE_ENTRY_INDEX_NULL;
if (head)
{
move_sprite_to_list((rct_sprite *) current, SPRITE_LIST_TRAIN * 2);
ride->cable_lift = current->sprite_index;
}
current->is_child = head ? 0 : 1;
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->swing_sprite = 0;
current->swinging_car_var_0 = 0;
current->var_4E = 0;
current->restraints_position = 0;
current->spin_sprite = 0;
current->spin_speed = 0;
current->sound2_flags = 0;
current->sound1_id = RCT12_SOUND_ID_NULL;
current->sound2_id = RCT12_SOUND_ID_NULL;
current->var_C4 = 0;
current->animation_frame = 0;
current->var_C8 = 0;
current->var_CA = 0;
current->scream_sound_id = 0xFF;
current->vehicle_sprite_type = 0;
current->bank_rotation = 0;
for (auto &peep : current->peep)
{
peep = SPRITE_INDEX_NULL;
}
current->var_CD = 0;
current->sprite_direction = direction << 3;
current->track_x = x;
current->track_y = y;
z = z * 8;
current->track_z = z;
z += RideData5[ride->type].z_offset;
sprite_move(16, 16, z, (rct_sprite *) current);
current->track_type = (TRACK_ELEM_CABLE_LIFT_HILL << 2) | (current->sprite_direction >> 3);
current->track_progress = 164;
current->update_flags = VEHICLE_UPDATE_FLAG_1;
current->status = VEHICLE_STATUS_MOVING_TO_END_OF_STATION;
current->sub_state = 0;
current->num_peeps = 0;
current->next_free_seat = 0;
return current;
}
void cable_lift_update(rct_vehicle * vehicle)
{
switch (vehicle->status)
{
case VEHICLE_STATUS_MOVING_TO_END_OF_STATION:
cable_lift_update_moving_to_end_of_station(vehicle);
break;
case VEHICLE_STATUS_WAITING_FOR_PASSENGERS:
// Stays in this state until a train puts it into next state
break;
case VEHICLE_STATUS_WAITING_TO_DEPART:
cable_lift_update_waiting_to_depart(vehicle);
break;
case VEHICLE_STATUS_DEPARTING:
cable_lift_update_departing(vehicle);
break;
case VEHICLE_STATUS_TRAVELLING:
cable_lift_update_travelling(vehicle);
break;
case VEHICLE_STATUS_ARRIVING:
cable_lift_update_arriving(vehicle);
break;
}
}
/**
*
* rct2: 0x006DF8A4
*/
static void cable_lift_update_moving_to_end_of_station(rct_vehicle * vehicle)
{
if (vehicle->velocity >= -439800)
vehicle->acceleration = -2932;
if (vehicle->velocity < -439800)
{
vehicle->velocity -= vehicle->velocity / 16;
vehicle->acceleration = 0;
}
if (!(cable_lift_update_track_motion(vehicle) & (1 << 0)))
return;
vehicle->velocity = 0;
vehicle->acceleration = 0;
vehicle->status = VEHICLE_STATUS_WAITING_FOR_PASSENGERS;
}
/**
*
* rct2: 0x006DF8F1
*/
static void cable_lift_update_waiting_to_depart(rct_vehicle * vehicle)
{
if (vehicle->velocity >= -58640)
vehicle->acceleration = -14660;
if (vehicle->velocity < -58640)
{
vehicle->velocity -= vehicle->velocity / 16;
vehicle->acceleration = 0;
}
cable_lift_update_track_motion(vehicle);
// 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.
rct_vehicle * passengerVehicle = GET_VEHICLE(vehicle->cable_lift_target);
rct_vehicle * cableLiftSecondPart = GET_VEHICLE(vehicle->prev_vehicle_on_ride);
sint16 dist_x = abs(passengerVehicle->x - cableLiftSecondPart->x);
sint16 dist_y = abs(passengerVehicle->y - cableLiftSecondPart->y);
if (dist_x + dist_y > 2)
return;
vehicle->velocity = 0;
vehicle->acceleration = 0;
vehicle->status = VEHICLE_STATUS_DEPARTING;
vehicle->sub_state = 0;
}
/**
*
* rct2: 0x006DF97A
*/
static void cable_lift_update_departing(rct_vehicle * vehicle)
{
vehicle->sub_state++;
if (vehicle->sub_state < 16)
return;
rct_vehicle * passengerVehicle = GET_VEHICLE(vehicle->cable_lift_target);
vehicle->status = VEHICLE_STATUS_TRAVELLING;
passengerVehicle->status = VEHICLE_STATUS_TRAVELLING_CABLE_LIFT;
}
/**
*
* rct2: 0x006DF99C
*/
static void cable_lift_update_travelling(rct_vehicle * vehicle)
{
rct_vehicle * passengerVehicle = GET_VEHICLE(vehicle->cable_lift_target);
vehicle->velocity = Math::Min(passengerVehicle->velocity, 439800);
vehicle->acceleration = 0;
if (passengerVehicle->update_flags & VEHICLE_UPDATE_FLAG_BROKEN_TRAIN)
return;
if (!(cable_lift_update_track_motion(vehicle) & (1 << 1)))
return;
vehicle->velocity = 0;
vehicle->acceleration = 0;
vehicle->status = VEHICLE_STATUS_ARRIVING;
vehicle->sub_state = 0;
}
/**
*
* rct2: 0x006DF9F0
*/
static void cable_lift_update_arriving(rct_vehicle * vehicle)
{
vehicle->sub_state++;
if (vehicle->sub_state >= 64)
vehicle->status = VEHICLE_STATUS_MOVING_TO_END_OF_STATION;
}
static bool sub_6DF01A_loop(rct_vehicle * vehicle)
{
Ride * ride = get_ride(vehicle->ride);
for (; vehicle->remaining_distance >= 13962; _vehicleUnkF64E10++)
{
uint8 trackType = vehicle->track_type >> 2;
if (trackType == TRACK_ELEM_CABLE_LIFT_HILL &&
vehicle->track_progress == 160)
{
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_1;
}
uint16 trackProgress = vehicle->track_progress + 1;
const rct_vehicle_info * moveInfo = vehicle_get_move_info(vehicle->var_CD, vehicle->track_type, 0);
uint16 trackTotalProgress = vehicle_get_move_info_size(vehicle->var_CD, vehicle->track_type);
if (trackProgress >= trackTotalProgress)
{
_vehicleVAngleEndF64E36 = TrackDefinitions[trackType].vangle_end;
_vehicleBankEndF64E37 = TrackDefinitions[trackType].bank_end;
rct_tile_element * trackElement = map_get_track_element_at_of_type_seq(
vehicle->track_x,
vehicle->track_y,
vehicle->track_z / 8,
trackType,
0
);
CoordsXYE input;
CoordsXYE output;
sint32 outputZ;
sint32 outputDirection;
input.x = vehicle->track_x;
input.y = vehicle->track_y;
input.element = trackElement;
if (!track_block_get_next(&input, &output, &outputZ, &outputDirection))
return false;
if (TrackDefinitions[track_element_get_type(output.element)].vangle_start != _vehicleVAngleEndF64E36 ||
TrackDefinitions[track_element_get_type(output.element)].bank_start != _vehicleBankEndF64E37)
return false;
vehicle->track_x = output.x;
vehicle->track_y = output.y;
vehicle->track_z = outputZ;
vehicle->track_direction = outputDirection;
vehicle->track_type |= track_element_get_type(output.element) << 2;
trackProgress = 0;
}
vehicle->track_progress = trackProgress;
moveInfo = vehicle_get_move_info(vehicle->var_CD, vehicle->track_type, trackProgress);
LocationXYZ16 unk = {
moveInfo->x,
moveInfo->y,
moveInfo->z
};
unk.x += vehicle->track_x;
unk.y += vehicle->track_y;
unk.z += vehicle->track_z;
uint8 bx = 0;
unk.z += RideData5[ride->type].z_offset;
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);
vehicle->remaining_distance -= dword_9A2930[bx];
unk_F64E20.x = unk.x;
unk_F64E20.y = unk.y;
unk_F64E20.z = unk.z;
vehicle->sprite_direction = moveInfo->direction;
vehicle->bank_rotation = moveInfo->bank_rotation;
vehicle->vehicle_sprite_type = moveInfo->vehicle_sprite_type;
if (vehicle->remaining_distance >= 13962)
{
vehicle->acceleration += dword_9A2970[vehicle->vehicle_sprite_type];
}
}
return true;
}
static bool sub_6DF21B_loop(rct_vehicle * vehicle)
{
Ride * ride = get_ride(vehicle->ride);
for (; vehicle->remaining_distance < 0; _vehicleUnkF64E10++)
{
uint16 trackProgress = vehicle->track_progress - 1;
const rct_vehicle_info * moveInfo;
if ((sint16) trackProgress == -1)
{
uint8 trackType = vehicle->track_type >> 2;
_vehicleVAngleEndF64E36 = TrackDefinitions[trackType].vangle_start;
_vehicleBankEndF64E37 = TrackDefinitions[trackType].bank_start;
rct_tile_element * trackElement = map_get_track_element_at_of_type_seq(
vehicle->track_x,
vehicle->track_y,
vehicle->track_z / 8,
trackType,
0
);
CoordsXYE input;
input.x = vehicle->track_x;
input.y = vehicle->track_y;
input.element = trackElement;
track_begin_end output;
if (!track_block_get_previous(input.x, input.y, input.element, &output))
return false;
if (TrackDefinitions[track_element_get_type(output.begin_element)].vangle_end != _vehicleVAngleEndF64E36 ||
TrackDefinitions[track_element_get_type(output.begin_element)].bank_end != _vehicleBankEndF64E37)
return false;
vehicle->track_x = output.begin_x;
vehicle->track_y = output.begin_y;
vehicle->track_z = output.begin_z;
vehicle->track_direction = output.begin_direction;
vehicle->track_type |= track_element_get_type(output.begin_element) << 2;
if (track_element_get_type(output.begin_element) == TRACK_ELEM_END_STATION)
{
_vehicleMotionTrackFlags = VEHICLE_UPDATE_MOTION_TRACK_FLAG_VEHICLE_AT_STATION;
}
moveInfo = vehicle_get_move_info(vehicle->var_CD, vehicle->track_type, 0);
uint16 trackTotalProgress = vehicle_get_move_info_size(vehicle->var_CD, vehicle->track_type);
trackProgress = trackTotalProgress - 1;
}
vehicle->track_progress = trackProgress;
moveInfo = vehicle_get_move_info(vehicle->var_CD, vehicle->track_type, trackProgress);
LocationXYZ16 unk = { moveInfo->x, moveInfo->y, moveInfo->z };
unk.x += vehicle->track_x;
unk.y += vehicle->track_y;
unk.z += vehicle->track_z;
uint8 bx = 0;
unk.z += RideData5[ride->type].z_offset;
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);
vehicle->remaining_distance += dword_9A2930[bx];
unk_F64E20.x = unk.x;
unk_F64E20.y = unk.y;
unk_F64E20.z = unk.z;
vehicle->sprite_direction = moveInfo->direction;
vehicle->bank_rotation = moveInfo->bank_rotation;
vehicle->vehicle_sprite_type = moveInfo->vehicle_sprite_type;
if (vehicle->remaining_distance < 0)
{
vehicle->acceleration += dword_9A2970[vehicle->vehicle_sprite_type];
}
}
return true;
}
/**
*
* rct2: 0x006DEF56
*/
sint32 cable_lift_update_track_motion(rct_vehicle * cableLift)
{
_vehicleF64E2C = 0;
gCurrentVehicle = cableLift;
_vehicleMotionTrackFlags = 0;
_vehicleStationIndex = 0xFF;
cableLift->velocity += cableLift->acceleration;
_vehicleVelocityF64E08 = cableLift->velocity;
_vehicleVelocityF64E0C = (cableLift->velocity / 1024) * 42;
rct_vehicle * frontVehicle = cableLift;
if (cableLift->velocity < 0)
{
frontVehicle = vehicle_get_tail(cableLift);
}
_vehicleFrontVehicle = frontVehicle;
for (rct_vehicle * vehicle = frontVehicle;;)
{
vehicle->acceleration = dword_9A2970[vehicle->vehicle_sprite_type];
_vehicleUnkF64E10 = 1;
vehicle->remaining_distance += _vehicleVelocityF64E0C;
if (vehicle->remaining_distance < 0 || vehicle->remaining_distance >= 13962)
{
unk_F64E20.x = vehicle->x;
unk_F64E20.y = vehicle->y;
unk_F64E20.z = vehicle->z;
invalidate_sprite_2((rct_sprite *) vehicle);
while (true)
{
if (vehicle->remaining_distance < 0)
{
if (sub_6DF21B_loop(vehicle) == true)
{
break;
}
else
{
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_5;
_vehicleVelocityF64E0C -= vehicle->remaining_distance - 13962;
vehicle->remaining_distance = 13962;
vehicle->acceleration += dword_9A2970[vehicle->vehicle_sprite_type];
_vehicleUnkF64E10++;
continue;
}
}
else
{
if (sub_6DF01A_loop(vehicle) == true)
{
break;
}
else
{
_vehicleMotionTrackFlags |= VEHICLE_UPDATE_MOTION_TRACK_FLAG_5;
_vehicleVelocityF64E0C -= vehicle->remaining_distance + 1;
vehicle->remaining_distance = -1;
vehicle->acceleration += dword_9A2970[vehicle->vehicle_sprite_type];
_vehicleUnkF64E10++;
}
}
}
sprite_move(
unk_F64E20.x,
unk_F64E20.y,
unk_F64E20.z,
(rct_sprite *) vehicle
);
invalidate_sprite_2((rct_sprite *) vehicle);
}
vehicle->acceleration /= _vehicleUnkF64E10;
if (_vehicleVelocityF64E08 >= 0)
{
if (vehicle->next_vehicle_on_train == SPRITE_INDEX_NULL)
break;
vehicle = GET_VEHICLE(vehicle->next_vehicle_on_train);
}
else
{
if (vehicle == cableLift)
break;
vehicle = GET_VEHICLE(vehicle->prev_vehicle_on_ride);
}
}
uint32 vehicleCount = 0;
uint16 massTotal = 0;
sint32 accelerationTotal = 0;
for (uint16 spriteId = cableLift->sprite_index; spriteId != SPRITE_INDEX_NULL;)
{
rct_vehicle * vehicle = GET_VEHICLE(spriteId);
vehicleCount++;
massTotal += vehicle->mass;
accelerationTotal = add_clamp_sint32(accelerationTotal, vehicle->acceleration);
spriteId = vehicle->next_vehicle_on_train;
}
sint32 newAcceleration = (accelerationTotal / vehicleCount) >> 9;
newAcceleration -= cableLift->velocity >> 12;
sint32 edx = cableLift->velocity >> 8;
edx *= edx;
if (cableLift->velocity < 0)
{
edx = -edx;
}
edx >>= 4;
newAcceleration -= edx / massTotal;
cableLift->acceleration = newAcceleration;
return _vehicleMotionTrackFlags;
}
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