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tunnelbridge_cmd.cpp File Reference

This file deals with tunnels and bridges (non-gui stuff) More...

#include "stdafx.h"
#include "newgrf_object.h"
#include "viewport_func.h"
#include "cmd_helper.h"
#include "command_func.h"
#include "town.h"
#include "train.h"
#include "ship.h"
#include "roadveh.h"
#include "pathfinder/yapf/yapf_cache.h"
#include "newgrf_sound.h"
#include "autoslope.h"
#include "tunnelbridge_map.h"
#include "strings_func.h"
#include "date_func.h"
#include "clear_func.h"
#include "vehicle_func.h"
#include "sound_func.h"
#include "tunnelbridge.h"
#include "cheat_type.h"
#include "elrail_func.h"
#include "pbs.h"
#include "company_base.h"
#include "newgrf_railtype.h"
#include "object_base.h"
#include "water.h"
#include "company_gui.h"
#include "table/strings.h"
#include "table/bridge_land.h"
#include "safeguards.h"

Go to the source code of this file.

Functions

void MarkBridgeDirty (TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
 Mark bridge tiles dirty.
void MarkBridgeDirty (TileIndex tile)
 Mark bridge tiles dirty.
void ResetBridges ()
 Reset the data been eventually changed by the grf loaded.
int CalcBridgeLenCostFactor (int length)
 Calculate the price factor for building a long bridge.
Foundation GetBridgeFoundation (Slope tileh, Axis axis)
 Get the foundation for a bridge.
bool HasBridgeFlatRamp (Slope tileh, Axis axis)
 Determines if the track on a bridge ramp is flat or goes up/down.
static const PalSpriteIDGetBridgeSpriteTable (int index, BridgePieces table)
static CommandCost CheckBridgeSlopeNorth (Axis axis, Slope *tileh, int *z)
 Determines the foundation for the north bridge head, and tests if the resulting slope is valid.
static CommandCost CheckBridgeSlopeSouth (Axis axis, Slope *tileh, int *z)
 Determines the foundation for the south bridge head, and tests if the resulting slope is valid.
CommandCost CheckBridgeAvailability (BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
 Is a bridge of the specified type and length available?
CommandCost CmdBuildBridge (TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 Build a Bridge.
CommandCost CmdBuildTunnel (TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 Build Tunnel.
static CommandCost CheckAllowRemoveTunnelBridge (TileIndex tile)
 Are we allowed to remove the tunnel or bridge at tile?
static CommandCost DoClearTunnel (TileIndex tile, DoCommandFlag flags)
 Remove a tunnel from the game, update town rating, etc.
static CommandCost DoClearBridge (TileIndex tile, DoCommandFlag flags)
 Remove a bridge from the game, update town rating, etc.
static CommandCost ClearTile_TunnelBridge (TileIndex tile, DoCommandFlag flags)
 Remove a tunnel or a bridge from the game.
static void DrawPillar (const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
 Draw a single pillar sprite.
static int DrawPillarColumn (int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
 Draw two bridge pillars (north and south).
static void DrawBridgePillars (const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
 Draws the pillars under high bridges.
static void DrawBridgeTramBits (int x, int y, int z, int offset, bool overlay, bool head)
 Draws the trambits over an already drawn (lower end) of a bridge.
static void DrawTile_TunnelBridge (TileInfo *ti)
 Draws a tunnel of bridge tile.
static BridgePieces CalcBridgePiece (uint north, uint south)
 Compute bridge piece.
void DrawBridgeMiddle (const TileInfo *ti)
 Draw the middle bits of a bridge.
static int GetSlopePixelZ_TunnelBridge (TileIndex tile, uint x, uint y)
static Foundation GetFoundation_TunnelBridge (TileIndex tile, Slope tileh)
static void GetTileDesc_TunnelBridge (TileIndex tile, TileDesc *td)
static void TileLoop_TunnelBridge (TileIndex tile)
static TrackStatus GetTileTrackStatus_TunnelBridge (TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
static void ChangeTileOwner_TunnelBridge (TileIndex tile, Owner old_owner, Owner new_owner)
static VehicleEnterTileStatus VehicleEnter_TunnelBridge (Vehicle *v, TileIndex tile, int x, int y)
static CommandCost TerraformTile_TunnelBridge (TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)

Variables

BridgeSpec _bridge [MAX_BRIDGES]
 The specification of all bridges.
TileIndex _build_tunnel_endtile
 The end of a tunnel; as hidden return from the tunnel build command for GUI purposes.
static const int BRIDGE_Z_START = 3
 Z position of the bridge sprites relative to bridge height (downwards)
static const byte TUNNEL_SOUND_FRAME = 1
 Frame when the 'enter tunnel' sound should be played.
const byte _tunnel_visibility_frame [DIAGDIR_END] = {12, 8, 8, 12}
 Frame when a vehicle should be hidden in a tunnel with a certain direction.
const TileTypeProcs _tile_type_tunnelbridge_procs

Detailed Description

This file deals with tunnels and bridges (non-gui stuff)

Todo:
separate this file into two

Definition in file tunnelbridge_cmd.cpp.

Function Documentation

int CalcBridgeLenCostFactor ( int  length)

Calculate the price factor for building a long bridge.

Basically the cost delta is 1,1, 1, 2,2, 3,3,3, 4,4,4,4, 5,5,5,5,5, 6,6,6,6,6,6, 7,7,7,7,7,7,7, 8,8,8,8,8,8,8,8,

Parameters
lengthLength of the bridge.
Returns
Price factor for the bridge.

Definition at line 105 of file tunnelbridge_cmd.cpp.

Referenced by CmdBuildBridge(), and ShowBuildBridgeWindow().

static BridgePieces CalcBridgePiece ( uint  north,
uint  south 
)
static

Compute bridge piece.

Computes the bridge piece to display depending on the position inside the bridge. bridges pieces sequence (middle parts). Note that it is not covering the bridge heads, which are always referenced by the same sprite table. bridge len 1: BRIDGE_PIECE_NORTH bridge len 2: BRIDGE_PIECE_NORTH BRIDGE_PIECE_SOUTH bridge len 3: BRIDGE_PIECE_NORTH BRIDGE_PIECE_MIDDLE_ODD BRIDGE_PIECE_SOUTH bridge len 4: BRIDGE_PIECE_NORTH BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_SOUTH bridge len 5: BRIDGE_PIECE_NORTH BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_MIDDLE_EVEN BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_SOUTH bridge len 6: BRIDGE_PIECE_NORTH BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_SOUTH bridge len 7: BRIDGE_PIECE_NORTH BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_MIDDLE_ODD BRIDGE_PIECE_INNER_NORTH BRIDGE_PIECE_INNER_SOUTH BRIDGE_PIECE_SOUTH #0 - always as first, #1 - always as last (if len>1) #2,#3 are to pair in order for odd bridges: #5 is going in the bridge middle if on even position, #4 on odd (counting from 0)

Parameters
northNorthernmost tile of bridge
southSouthernmost tile of bridge
Returns
Index of bridge piece

Definition at line 1372 of file tunnelbridge_cmd.cpp.

Referenced by DrawBridgeMiddle().

static CommandCost CheckAllowRemoveTunnelBridge ( TileIndex  tile)
inlinestatic

Are we allowed to remove the tunnel or bridge at tile?

Parameters
tileEnd point of the tunnel or bridge.
Returns
A succeeded command if the tunnel or bridge may be removed, a failed command otherwise.

Definition at line 749 of file tunnelbridge_cmd.cpp.

References _cheats, _current_company, _settings_game, CheckOwnership(), CheckTileOwnership(), GameSettings::construction, ConstructionSettings::extra_dynamite, GetRoadOwner(), GetRoadTypes(), GetTileOwner(), GetTunnelBridgeTransportType(), HasBit(), Cheats::magic_bulldozer, OWNER_NONE, OWNER_TOWN, OWNER_WATER, ROADTYPE_ROAD, ROADTYPE_TRAM, CommandCost::Succeeded(), TRANSPORT_RAIL, TRANSPORT_ROAD, TRANSPORT_WATER, and Cheat::value.

Referenced by DoClearBridge(), and DoClearTunnel().

CommandCost CheckBridgeAvailability ( BridgeType  bridge_type,
uint  bridge_len,
DoCommandFlag  flags 
)

Is a bridge of the specified type and length available?

Parameters
bridge_typeWanted type of bridge.
bridge_lenWanted length of the bridge.
Returns
A succeeded (the requested bridge is available) or failed (it cannot be built) command.

Definition at line 209 of file tunnelbridge_cmd.cpp.

References _cur_year, _settings_game, BridgeSpec::avail_year, CMD_ERROR, GameSettings::construction, DC_QUERY_COST, GetBridgeSpec(), max(), ConstructionSettings::max_bridge_length, MAX_BRIDGES, BridgeSpec::max_length, min(), BridgeSpec::min_length, and return_cmd_error.

Referenced by CmdBuildBridge(), and ShowBuildBridgeWindow().

static CommandCost CheckBridgeSlopeNorth ( Axis  axis,
Slope tileh,
int *  z 
)
static

Determines the foundation for the north bridge head, and tests if the resulting slope is valid.

Parameters
axisAxis of the bridge
tilehSlope of the tile under the north bridge head; returns slope on top of foundation
zTileZ corresponding to tileh, gets modified as well
Returns
Error or cost for bridge foundation

Definition at line 169 of file tunnelbridge_cmd.cpp.

References ApplyFoundationToSlope(), AXIS_X, CMD_ERROR, EXPENSES_CONSTRUCTION, FOUNDATION_NONE, GetBridgeFoundation(), SLOPE_FLAT, SLOPE_NE, and SLOPE_NW.

Referenced by CmdBuildBridge().

static CommandCost CheckBridgeSlopeSouth ( Axis  axis,
Slope tileh,
int *  z 
)
static

Determines the foundation for the south bridge head, and tests if the resulting slope is valid.

Parameters
axisAxis of the bridge
tilehSlope of the tile under the south bridge head; returns slope on top of foundation
zTileZ corresponding to tileh, gets modified as well
Returns
Error or cost for bridge foundation

Definition at line 190 of file tunnelbridge_cmd.cpp.

References ApplyFoundationToSlope(), AXIS_X, CMD_ERROR, EXPENSES_CONSTRUCTION, FOUNDATION_NONE, GetBridgeFoundation(), SLOPE_FLAT, SLOPE_SE, and SLOPE_SW.

Referenced by CmdBuildBridge().

static CommandCost ClearTile_TunnelBridge ( TileIndex  tile,
DoCommandFlag  flags 
)
static

Remove a tunnel or a bridge from the game.

Parameters
tileTile containing one of the endpoints.
flagsCommand flags.
Returns
Succeeded or failed command.

Definition at line 976 of file tunnelbridge_cmd.cpp.

References DC_AUTO, DoClearBridge(), DoClearTunnel(), IsTunnel(), and return_cmd_error.

CommandCost CmdBuildBridge ( TileIndex  end_tile,
DoCommandFlag  flags,
uint32  p1,
uint32  p2,
const char *  text 
)

Build a Bridge.

Parameters
end_tileend tile
flagstype of operation
p1packed start tile coords (~ dx)
p2various bitstuffed elements
  • p2 = (bit 0- 7) - bridge type (hi bh)
  • p2 = (bit 8-11) - rail type or road types.
  • p2 = (bit 15-16) - transport type.
textunused
Returns
the cost of this operation or an error

Definition at line 240 of file tunnelbridge_cmd.cpp.

References _current_company, _settings_game, CommandCost::AddCost(), AddSideToSignalBuffer(), AXIS_X, AXIS_Y, AxisToDiagDir(), AxisToTrack(), ConstructionSettings::build_on_slopes, Town::cache, CalcBridgeLenCostFactor(), CalcClosestTownFromTile(), CheckBridgeAvailability(), CheckBridgeSlopeNorth(), CheckBridgeSlopeSouth(), ClosestTownFromTile(), ClrBit(), CMD_ERROR, CMD_LANDSCAPE_CLEAR, GameSettings::construction, CountBits(), DC_EXEC, DC_QUERY_COST, DiagDirToAxis(), DirtyCompanyInfrastructureWindows(), DistanceSquare(), DoCommand(), EXPENSES_CONSTRUCTION, CommandCost::Failed(), ObjectSpec::flags, FOR_EACH_SET_ROADTYPE, GB(), GetBridgeAxis(), GetBridgeHeight(), GetBridgeSpec(), GetBridgeType(), ObjectSpec::GetByTile(), CommandCost::GetCost(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::GetIfValid(), GetNorthernBridgeEnd(), GetOtherBridgeEnd(), GetRailType(), GetRoadOwner(), GetRoadTypes(), GetTileMaxZ(), GetTileOwner(), GetTileSlope(), GetTileType(), GetTileZ(), GetTunnelBridgeDirection(), GetTunnelBridgeLength(), GetTunnelBridgeTransportType(), HasBit(), HasExactlyOneBit(), HasRoadTypesAvail(), HasTunnelBridgeReservation(), ObjectSpec::height, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Company::infrastructure, INVALID_DIAGDIR, INVALID_RAILTYPE, CompanyProperties::is_ai, IsBridgeAbove(), IsBridgeTile(), IsCoast(), IsPlainRail(), IsRoadDepot(), IsTileOwner(), IsTunnel(), IsValidTile(), IsWater(), MakeAqueductBridgeRamp(), MakeRailBridgeRamp(), MakeRoadBridgeRamp(), MarkBridgeDirty(), ConstructionSettings::max_bridge_height, ConstructionSettings::max_bridge_length, MP_CLEAR, MP_OBJECT, MP_RAILWAY, MP_ROAD, MP_TUNNELBRIDGE, MP_WATER, OBJECT_FLAG_ALLOW_UNDER_BRIDGE, OWNER_DEITY, OWNER_NONE, OWNER_TOWN, CompanyInfrastructure::rail, RailBuildCost(), return_cmd_error, ReverseDiagDir(), CompanyInfrastructure::road, ROADTYPE_ROAD, ROADTYPE_TRAM, ROADTYPES_NONE, SetBridgeMiddle(), SetDParam(), SetTunnelBridgeReservation(), SLOPE_FLAT, TownCache::squared_town_zone_radius, Swap(), TileDiffXY(), TileX(), TileY(), TRANSPORT_RAIL, TRANSPORT_ROAD, TRANSPORT_WATER, TUNNELBRIDGE_TRACKBIT_FACTOR, ValParamRailtype(), CompanyInfrastructure::water, Town::xy, and YapfNotifyTrackLayoutChange().

CommandCost CmdBuildTunnel ( TileIndex  start_tile,
DoCommandFlag  flags,
uint32  p1,
uint32  p2,
const char *  text 
)

Build Tunnel.

Parameters
start_tilestart tile of tunnel
flagstype of operation
p1bit 0-3 railtype or roadtypes bit 8-9 transport type
p2unused
textunused
Returns
the cost of this operation or an error

Definition at line 583 of file tunnelbridge_cmd.cpp.

References _build_tunnel_endtile, _cheats, _current_company, _settings_game, CommandCost::AddCost(), AddSideToSignalBuffer(), ClearedObjectArea::area, AXIS_Y, Town::cache, CalcClosestTownFromTile(), CMD_ERROR, CMD_LANDSCAPE_CLEAR, CMD_TERRAFORM_LAND, ComplementSlope(), GameSettings::construction, Cheats::crossing_tunnels, DC_EXEC, DIAGDIR_NE, DIAGDIR_NW, DIAGDIR_SE, DIAGDIR_SW, DiagDirToAxis(), DiagDirToDiagTrack(), DirtyCompanyInfrastructureWindows(), DistanceSquare(), DoCommand(), EXPENSES_CONSTRUCTION, CommandCost::Failed(), FindClearedObject(), ClearedObjectArea::first_tile, FOR_EACH_SET_ROADTYPE, CommandCost::GetCost(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::GetIfValid(), GetInclinedSlopeDirection(), GetRoadTypes(), GetTileSlope(), HasExactlyOneBit(), HasRoadTypesAvail(), HasTileWaterGround(), Company::infrastructure, INVALID_DIAGDIR, INVALID_RAILTYPE, INVALID_TILE, IsTunnelInWayDir(), IsTunnelTile(), IsValidTile(), MakeRailTunnel(), MakeRoadTunnel(), MapMaxX(), ConstructionSettings::max_tunnel_length, OWNER_DEITY, OWNER_NONE, OWNER_TOWN, CompanyInfrastructure::rail, RailBuildCost(), return_cmd_error, ReverseDiagDir(), CompanyInfrastructure::road, ROADTYPES_NONE, TownCache::squared_town_zone_radius, TileOffsByDiagDir(), TileX(), TileY(), TRANSPORT_RAIL, TRANSPORT_ROAD, TUNNELBRIDGE_TRACKBIT_FACTOR, ValParamRailtype(), Cheat::value, Town::xy, and YapfNotifyTrackLayoutChange().

static CommandCost DoClearBridge ( TileIndex  tile,
DoCommandFlag  flags 
)
static

Remove a bridge from the game, update town rating, etc.

Parameters
tileTile containing one of the endpoints of the bridge.
flagsCommand flags.
Returns
Succeeded or failed command.

Definition at line 880 of file tunnelbridge_cmd.cpp.

References AddSideToSignalBuffer(), ChangeTownRating(), CheckAllowRemoveTunnelBridge(), CheckforTownRating(), ClearBridgeMiddle(), ClosestTownFromTile(), DC_EXEC, DiagDirToDiagTrack(), DirtyCompanyInfrastructureWindows(), EXPENSES_CONSTRUCTION, CommandCost::Failed(), FOR_EACH_SET_ROADTYPE, FreeTrainTrackReservation(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::Get(), GetBridgeHeight(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::GetIfValid(), GetOtherBridgeEnd(), GetRailType(), GetRoadOwner(), GetRoadside(), GetRoadTypes(), GetTileMaxZ(), GetTileOwner(), GetTrainForReservation(), GetTunnelBridgeDirection(), GetTunnelBridgeLength(), GetTunnelBridgeTransportType(), HasTunnelBridgeReservation(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Company::infrastructure, IsNormalRoadTile(), IsTileOwner(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::IsValidID(), MarkTileDirtyByTile(), OWNER_TOWN, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, ReverseDiagDir(), CompanyInfrastructure::road, ROADSIDE_PAVED, ROADSIDE_TREES, SetRoadside(), TileHeight(), TileOffsByDiagDir(), TRANSPORT_RAIL, TRANSPORT_ROAD, TRANSPORT_WATER, TryPathReserve(), TUNNELBRIDGE_REMOVE, TUNNELBRIDGE_TRACKBIT_FACTOR, TunnelBridgeIsFree(), and YapfNotifyTrackLayoutChange().

Referenced by ClearTile_TunnelBridge().

static CommandCost DoClearTunnel ( TileIndex  tile,
DoCommandFlag  flags 
)
static

Remove a tunnel from the game, update town rating, etc.

Parameters
tileTile containing one of the endpoints of the tunnel.
flagsCommand flags.
Returns
Succeeded or failed command.

Definition at line 796 of file tunnelbridge_cmd.cpp.

References _build_tunnel_endtile, AddSideToSignalBuffer(), ChangeTownRating(), CheckAllowRemoveTunnelBridge(), CheckforTownRating(), ClosestTownFromTile(), DC_EXEC, DiagDirToDiagTrack(), DirtyCompanyInfrastructureWindows(), EXPENSES_CONSTRUCTION, CommandCost::Failed(), FOR_EACH_SET_ROADTYPE, FreeTrainTrackReservation(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::Get(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::GetIfValid(), GetOtherTunnelEnd(), GetRailType(), GetRoadOwner(), GetRoadTypes(), GetTileOwner(), GetTrainForReservation(), GetTunnelBridgeDirection(), GetTunnelBridgeLength(), GetTunnelBridgeTransportType(), HasTunnelBridgeReservation(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, Company::infrastructure, IsTileOwner(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::IsValidID(), OWNER_TOWN, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, ReverseDiagDir(), CompanyInfrastructure::road, TRANSPORT_RAIL, TryPathReserve(), TUNNELBRIDGE_REMOVE, TUNNELBRIDGE_TRACKBIT_FACTOR, TunnelBridgeIsFree(), and YapfNotifyTrackLayoutChange().

Referenced by ClearTile_TunnelBridge().

void DrawBridgeMiddle ( const TileInfo ti)
static void DrawBridgePillars ( const PalSpriteID psid,
const TileInfo ti,
Axis  axis,
bool  drawfarpillar,
int  x,
int  y,
int  z_bridge 
)
static

Draws the pillars under high bridges.

Parameters
psidImage and palette of a bridge pillar.
tiTileInfo of current bridge-middle-tile.
axisOrientation of bridge.
drawfarpillarWhether to draw the pillar at the back
xSprite X position of front pillar.
ySprite Y position of front pillar.
z_bridgeAbsolute height of bridge bottom.

< bounding box size of pillars along bridge direction

< sprite position offset of back facing pillar

< big number compared to sprite size

Definition at line 1034 of file tunnelbridge_cmd.cpp.

References AxisToDiagDir(), DrawPillar(), DrawPillarColumn(), GetSlopePixelZOnEdge(), max(), OtherAxis(), ReverseDiagDir(), PalSpriteID::sprite, TILE_HEIGHT, TileInfo::tileh, and TileInfo::z.

Referenced by DrawBridgeMiddle().

static void DrawBridgeTramBits ( int  x,
int  y,
int  z,
int  offset,
bool  overlay,
bool  head 
)
static

Draws the trambits over an already drawn (lower end) of a bridge.

Parameters
xthe x of the bridge
ythe y of the bridge
zthe z of the bridge
offsetnumber representing whether to level or sloped and the direction
overlaydo we want to still see the road?
headare we drawing bridge head?

Definition at line 1090 of file tunnelbridge_cmd.cpp.

References AddSortableSpriteToDraw(), EndSpriteCombine(), IsInvisibilitySet(), IsTransparencySet(), SPR_TRAMWAY_BASE, StartSpriteCombine(), TO_BRIDGES, and TO_CATENARY.

Referenced by DrawBridgeMiddle(), and DrawTile_TunnelBridge().

static void DrawPillar ( const PalSpriteID psid,
int  x,
int  y,
int  z,
int  w,
int  h,
const SubSprite subsprite 
)
inlinestatic

Draw a single pillar sprite.

Parameters
psidPillarsprite
xPillar X
yPillar Y
zPillar Z
wBounding box size in X direction
hBounding box size in Y direction
subspriteOptional subsprite for drawing halfpillars

< Start offset of pillar wrt. bridge (downwards)

Definition at line 997 of file tunnelbridge_cmd.cpp.

References AddSortableSpriteToDraw(), BB_HEIGHT_UNDER_BRIDGE, BRIDGE_Z_START, IsTransparencySet(), PalSpriteID::pal, PalSpriteID::sprite, TILE_HEIGHT, and TO_BRIDGES.

Referenced by DrawBridgePillars(), and DrawPillarColumn().

static int DrawPillarColumn ( int  z_bottom,
int  z_top,
const PalSpriteID psid,
int  x,
int  y,
int  w,
int  h 
)
static

Draw two bridge pillars (north and south).

Parameters
z_bottomBottom Z
z_topTop Z
psidPillarsprite
xPillar X
yPillar Y
wBounding box size in X direction
hBounding box size in Y direction
Returns
Reached Z at the bottom

Definition at line 1014 of file tunnelbridge_cmd.cpp.

References DrawPillar(), and TILE_HEIGHT.

Referenced by DrawBridgePillars().

static void DrawTile_TunnelBridge ( TileInfo ti)
static

Draws a tunnel of bridge tile.

For tunnels, this is rather simple, as you only need to draw the entrance. Bridges are a bit more complex. base_offset is where the sprite selection comes into play and it works a bit like a bitmask.

For bridge heads:

Parameters
tiTileInfo of the structure to draw
  • Bit 0: direction
  • Bit 1: northern or southern heads
  • Bit 2: Set if the bridge head is sloped
  • Bit 3 and more: Railtype Specific subset
Please note that in this code, "roads" are treated as railtype 1, whilst the real railtypes are 0, 2 and 3

Definition at line 1141 of file tunnelbridge_cmd.cpp.

References _settings_client, AddSortableSpriteToDraw(), AXIS_X, RailtypeInfo::base_sprites, BB_Z_SEPARATOR, RailtypeInfo::bridge_offset, DiagDirToAxis(), DrawBridgeMiddle(), DrawBridgeTramBits(), DrawFoundation(), DrawGroundSprite(), DrawRailCatenary(), DrawRailCatenaryOnTunnel(), EndSpriteCombine(), GetBridgeFoundation(), GetBridgeType(), GetCustomRailSprite(), GetRailType(), GetRailTypeInfo(), GetRoadTypes(), GetTunnelBridgeDirection(), GetTunnelBridgeTransportType(), GetWaterClass(), ClientSettings::gui, HasBit(), HasBridgeFlatRamp(), HasRailCatenaryDrawn(), HasTileWaterClass(), HasTunnelBridgeReservation(), HasTunnelBridgeSnowOrDesert(), IsInvisibilitySet(), IsTransparencySet(), IsTunnel(), PalSpriteID::pal, PALETTE_CRASH, ROADTYPE_ROAD, ROADTYPE_TRAM, ROADTYPES_TRAM, RTBO_SLOPE, RTBO_X, RTBO_Y, RTO_SLOPE_NE, RTO_X, RTSG_BRIDGE, RTSG_OVERLAY, RTSG_TUNNEL, RTSG_TUNNEL_PORTAL, GUISettings::show_track_reservation, RailtypeInfo::single_sloped, RailtypeInfo::single_x, RailtypeInfo::single_y, SLOPE_FLAT, SlopeToSpriteOffset(), SPR_RAILTYPE_TUNNEL_BASE, SPR_TRAMWAY_BASE, PalSpriteID::sprite, StartSpriteCombine(), TileInfo::tile, TILE_HEIGHT, TILE_SIZE, TileInfo::tileh, TileOffsByDiagDir(), TO_CATENARY, TRANSPORT_RAIL, TRANSPORT_ROAD, TRANSPORT_WATER, RailtypeInfo::tunnel, WATER_CLASS_SEA, TileInfo::x, TileInfo::y, and TileInfo::z.

Foundation GetBridgeFoundation ( Slope  tileh,
Axis  axis 
)

Get the foundation for a bridge.

Parameters
tilehThe slope to build the bridge on.
axisThe axis of the bridge entrance.
Returns
The foundation required.

Definition at line 126 of file tunnelbridge_cmd.cpp.

References AXIS_X, AXIS_Y, FlatteningFoundation(), FOUNDATION_NONE, HasSlopeHighestCorner(), InclinedFoundation(), SLOPE_FLAT, SLOPE_NE, SLOPE_NW, SLOPE_SE, and SLOPE_SW.

Referenced by CheckBridgeSlopeNorth(), CheckBridgeSlopeSouth(), DrawRailCatenaryRailway(), DrawTile_TunnelBridge(), GetBridgeHeight(), and HasBridgeFlatRamp().

bool HasBridgeFlatRamp ( Slope  tileh,
Axis  axis 
)

Determines if the track on a bridge ramp is flat or goes up/down.

Parameters
tilehSlope of the tile under the bridge head
axisOrientation of bridge
Returns
true iff the track is flat.

Definition at line 142 of file tunnelbridge_cmd.cpp.

References ApplyFoundationToSlope(), GetBridgeFoundation(), and SLOPE_FLAT.

Referenced by DrawTile_TunnelBridge(), and CYapfCostBase::stSlopeCost().

void MarkBridgeDirty ( TileIndex  begin,
TileIndex  end,
DiagDirection  direction,
uint  bridge_height 
)

Mark bridge tiles dirty.

Note: The bridge does not need to exist, everything is passed via parameters.

Parameters
beginStart tile.
endEnd tile.
directionDirection from begin to end.
bridge_heightBridge height level.

Definition at line 64 of file tunnelbridge_cmd.cpp.

References MarkTileDirtyByTile(), TileHeight(), and TileOffsByDiagDir().

Referenced by ClearPathReservation(), CmdBuildBridge(), CmdBuildRoad(), CmdConvertRail(), MarkBridgeDirty(), RemoveRoad(), TryReserveRailTrack(), and UnreserveRailTrack().

void MarkBridgeDirty ( TileIndex  tile)

Mark bridge tiles dirty.

Parameters
tileBridge head.

Definition at line 77 of file tunnelbridge_cmd.cpp.

References GetBridgeHeight(), GetOtherTunnelBridgeEnd(), GetTunnelBridgeDirection(), and MarkBridgeDirty().

void ResetBridges ( )

Reset the data been eventually changed by the grf loaded.

Definition at line 83 of file tunnelbridge_cmd.cpp.

References free(), and MAX_BRIDGES.

Referenced by ResetNewGRFData().

Variable Documentation

const TileTypeProcs _tile_type_tunnelbridge_procs
Initial value:
{
GetSlopePixelZ_TunnelBridge,
NULL,
GetTileDesc_TunnelBridge,
GetTileTrackStatus_TunnelBridge,
NULL,
NULL,
TileLoop_TunnelBridge,
ChangeTileOwner_TunnelBridge,
NULL,
VehicleEnter_TunnelBridge,
GetFoundation_TunnelBridge,
TerraformTile_TunnelBridge,
}
const byte _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12}

Frame when a vehicle should be hidden in a tunnel with a certain direction.

This differs per direction, because of visibility / bounding box issues. Note that direction, in this case, is the direction leading into the tunnel. When entering a tunnel, hide the vehicle when it reaches the given frame. When leaving a tunnel, show the vehicle when it is one frame further to the 'outside', i.e. at (TILE_SIZE-1) - (frame) + 1

Referenced by AfterLoadGame().

const byte TUNNEL_SOUND_FRAME = 1
static

Frame when the 'enter tunnel' sound should be played.

This is the second frame on a tile, so the sound is played shortly after entering the tunnel tile, while the vehicle is still visible.

Definition at line 1722 of file tunnelbridge_cmd.cpp.