landscape.cpp File Reference

Functions related to the landscape (slopes etc. More...

#include "stdafx.h"
#include "heightmap.h"
#include "clear_map.h"
#include "spritecache.h"
#include "viewport_func.h"
#include "command_func.h"
#include "landscape.h"
#include "variables.h"
#include "void_map.h"
#include "tgp.h"
#include "genworld.h"
#include "fios.h"
#include "functions.h"
#include "date_func.h"
#include "water.h"
#include "effectvehicle_func.h"
#include "landscape_type.h"
#include "settings_type.h"
#include "animated_tile_func.h"
#include "table/sprites.h"
#include "table/genland.h"

Go to the source code of this file.

Defines

#define TILELOOP_BITS   4
#define TILELOOP_SIZE   (1 << TILELOOP_BITS)
#define TILELOOP_ASSERTMASK   ((TILELOOP_SIZE - 1) + ((TILELOOP_SIZE - 1) << MapLogX()))
#define TILELOOP_CHKMASK   (((1 << (MapLogX() - TILELOOP_BITS))-1) << TILELOOP_BITS)

Functions

uint ApplyFoundationToSlope (Foundation f, Slope *s)
 Applies a foundation to a slope.
uint GetPartialZ (int x, int y, Slope corners)
 Determines height at given coordinate of a slope.
uint GetSlopeZ (int x, int y)
int GetSlopeZInCorner (Slope tileh, Corner corner)
 Determine the Z height of a corner relative to TileZ.
void GetSlopeZOnEdge (Slope tileh, DiagDirection edge, int *z1, int *z2)
 Determine the Z height of the corners of a specific tile edge.
Slope GetFoundationSlope (TileIndex tile, uint *z)
 Get slope of a tile on top of a (possible) foundation If a tile does not have a foundation, the function returns the same as GetTileSlope.
static bool HasFoundationNW (TileIndex tile, Slope slope_here, uint z_here)
static bool HasFoundationNE (TileIndex tile, Slope slope_here, uint z_here)
void DrawFoundation (TileInfo *ti, Foundation f)
 Draw foundation f at tile ti.
void DoClearSquare (TileIndex tile)
TrackStatus GetTileTrackStatus (TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
 Returns information about trackdirs and signal states.
void ChangeTileOwner (TileIndex tile, Owner old_owner, Owner new_owner)
 Change the owner of a tile.
void GetAcceptedCargo (TileIndex tile, AcceptedCargo ac)
void GetTileDesc (TileIndex tile, TileDesc *td)
bool IsSnowLineSet (void)
 Has a snow line table already been loaded.
void SetSnowLine (byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS])
 Set a variable snow line, as loaded from a newgrf file.
byte GetSnowLine (void)
 Get the current snow line, either variable or static.
byte HighestSnowLine (void)
 Get the highest possible snow line height, either variable or static.
byte LowestSnowLine (void)
 Get the lowest possible snow line height, either variable or static.
void ClearSnowLine (void)
 Clear the variable snow line table and free the memory.
CommandCost CmdLandscapeClear (TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 Clear a piece of landscape.
CommandCost CmdClearArea (TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 Clear a big piece of landscape.
void RunTileLoop ()
void InitializeLandscape ()
static void GenerateTerrain (int type, uint flag)
static void CreateDesertOrRainForest ()
void GenerateLandscape (byte mode)
void OnTick_Town ()
void OnTick_Trees ()
void OnTick_Station ()
void OnTick_Industry ()
void OnTick_Companies ()
void OnTick_Train ()
void CallLandscapeTick ()

Variables

const TileTypeProcs _tile_type_clear_procs
const TileTypeProcs _tile_type_rail_procs
const TileTypeProcs _tile_type_road_procs
const TileTypeProcs _tile_type_town_procs
const TileTypeProcs _tile_type_trees_procs
const TileTypeProcs _tile_type_station_procs
const TileTypeProcs _tile_type_water_procs
const TileTypeProcs _tile_type_dummy_procs
const TileTypeProcs _tile_type_industry_procs
const TileTypeProcs _tile_type_tunnelbridge_procs
const TileTypeProcs _tile_type_unmovable_procs
const TileTypeProcs *const _tile_type_procs [16]
 Tile callback functions for each type of tile.
const byte _tileh_to_sprite [32]
SnowLine_snow_line = NULL
 Description of the snow line throughout the year.
TileIndex _cur_tileloop_tile
static const byte _genterrain_tbl_1 [5] = { 10, 22, 33, 37, 4 }
static const byte _genterrain_tbl_2 [5] = { 0, 0, 0, 0, 33 }


Detailed Description

Functions related to the landscape (slopes etc.

).

Definition in file landscape.cpp.


Function Documentation

uint ApplyFoundationToSlope ( Foundation  f,
Slope s 
)

void ChangeTileOwner ( TileIndex  tile,
Owner  old_owner,
Owner  new_owner 
)

Change the owner of a tile.

Parameters:
tile Tile to change
old_owner Current owner of the tile
new_owner New owner of the tile

Definition at line 502 of file landscape.cpp.

References TileTypeProcs::change_tile_owner_proc, and GetTileType().

CommandCost CmdClearArea ( TileIndex  tile,
DoCommandFlag  flags,
uint32  p1,
uint32  p2,
const char *  text 
)

Clear a big piece of landscape.

Parameters:
tile end tile of area dragging
p1 start tile of area dragging
flags of operation to conduct
p2 unused

Definition at line 608 of file landscape.cpp.

References CommandCost::AddCost(), CMD_ERROR, CMD_LANDSCAPE_CLEAR, CmdFailed(), DC_EXEC, DoCommand(), GetAvailableMoneyForCommand(), CommandCost::GetCost(), MapSize(), Swap(), TILE_SIZE, TileX(), TileXY(), and TileY().

CommandCost CmdLandscapeClear ( TileIndex  tile,
DoCommandFlag  flags,
uint32  p1,
uint32  p2,
const char *  text 
)

Clear a piece of landscape.

Parameters:
tile tile to clear
flags of operation to conduct
p1 unused
p2 unused

Definition at line 597 of file landscape.cpp.

References TileTypeProcs::clear_tile_proc, and GetTileType().

void DrawFoundation ( TileInfo ti,
Foundation  f 
)

Slope GetFoundationSlope ( TileIndex  tile,
uint *  z 
)

Get slope of a tile on top of a (possible) foundation If a tile does not have a foundation, the function returns the same as GetTileSlope.

Parameters:
tile The tile of interest.
z returns the z of the foundation slope. (Can be NULL, if not needed)
Returns:
The slope on top of the foundation.

Definition at line 325 of file landscape.cpp.

References ApplyFoundationToSlope(), TileTypeProcs::get_foundation_proc, GetTileSlope(), and GetTileType().

Referenced by DrawFoundation(), IsPossibleCrossing(), IsRoadAllowedHere(), and TileLoop_Water().

uint GetPartialZ ( int  x,
int  y,
Slope  corners 
)

Determines height at given coordinate of a slope.

Parameters:
x x coordinate
y y coordinate
corners slope to examine
Returns:
height of given point of given slope

Definition at line 135 of file landscape.cpp.

References GetHalftileSlopeCorner(), GetSlopeMaxZ(), IsHalftileSlope(), RemoveHalftileSlope(), SLOPE_E, SLOPE_ELEVATED, SLOPE_ENW, SLOPE_EW, SLOPE_N, SLOPE_NE, SLOPE_NS, SLOPE_NW, SLOPE_NWS, SLOPE_S, SLOPE_SE, SLOPE_SEN, SLOPE_STEEP_E, SLOPE_STEEP_N, SLOPE_STEEP_S, SLOPE_STEEP_W, SLOPE_SW, SLOPE_W, and SLOPE_WSE.

int GetSlopeZInCorner ( Slope  tileh,
Corner  corner 
)

Determine the Z height of a corner relative to TileZ.

Precondition:
The slope must not be a halftile slope.
Parameters:
tileh The slope.
corner The corner.
Returns:
Z position of corner relative to TileZ.

Definition at line 278 of file landscape.cpp.

References IsHalftileSlope(), SlopeWithOneCornerRaised(), SteepSlope(), and TILE_HEIGHT.

Referenced by DrawTrackFence_NS_1(), DrawTrackFence_NS_2(), DrawTrackFence_WE_1(), DrawTrackFence_WE_2(), AITile::GetCornerHeight(), and TestAutoslopeOnRailTile().

void GetSlopeZOnEdge ( Slope  tileh,
DiagDirection  edge,
int *  z1,
int *  z2 
)

Determine the Z height of the corners of a specific tile edge.

Note:
If a tile has a non-continuous halftile foundation, a corner can have different heights wrt. it's edges.
Precondition:
z1 and z2 must be initialized (typ. with TileZ). The corner heights just get added.
Parameters:
tileh The slope of the tile.
edge The edge of interest.
z1 Gets incremented by the height of the first corner of the edge. (near corner wrt. the camera)
z2 Gets incremented by the height of the second corner of the edge. (far corner wrt. the camera)

Definition at line 296 of file landscape.cpp.

References GetHalftileSlopeCorner(), IsHalftileSlope(), RemoveHalftileSlope(), SLOPE_E, SLOPE_N, SLOPE_S, SLOPE_STEEP_E, SLOPE_STEEP_N, SLOPE_STEEP_S, SLOPE_STEEP_W, SLOPE_W, SlopeWithOneCornerRaised(), and TILE_HEIGHT.

Referenced by DrawBridgePillars().

TrackStatus GetTileTrackStatus ( TileIndex  tile,
TransportType  mode,
uint  sub_mode,
DiagDirection  side 
)

Returns information about trackdirs and signal states.

If there is any trackbit at 'side', return all trackdirbits. For TRANSPORT_ROAD, return no trackbits if there is no roadbit (of given subtype) at given side.

Parameters:
tile tile to get info about
mode transport type
sub_mode for TRANSPORT_ROAD, roadtypes to check
side side we are entering from, INVALID_DIAGDIR to return all trackbits
Returns:
trackdirbits and other info depending on 'mode'

Definition at line 491 of file landscape.cpp.

References TileTypeProcs::get_tile_track_status_proc, and GetTileType().

Referenced by AIMarine::AreWaterTilesConnected(), CheckRoadBlockedForOvertaking(), DisasterTick_Submarine(), FixOwnerOfRailTrack(), CFollowTrackT< Ttr_type_, T90deg_turns_allowed_, Tmask_reserved_tracks >::Follow(), GenericPlaceSignals(), GetDriveableTrackdirBits(), AITile::HasTransportType(), MaskWireBits(), CFollowTrackT< Ttr_type_, T90deg_turns_allowed_, Tmask_reserved_tracks >::QueryNewTileTrackStatus(), RoadFindPathToDest(), TrainCheckIfLineEnds(), TryPathReserve(), TryReserveRailTrack(), UnreserveRailTrack(), UpdateSignalsInBuffer(), YapfFindNearestRoadDepot(), and YapfFindNearestRoadVehicleCompatibleStop().


Variable Documentation

const TileTypeProcs* const _tile_type_procs[16]

Initial value:

 {
  &_tile_type_clear_procs,        
  &_tile_type_rail_procs,         
  &_tile_type_road_procs,         
  &_tile_type_town_procs,         
  &_tile_type_trees_procs,        
  &_tile_type_station_procs,      
  &_tile_type_water_procs,        
  &_tile_type_dummy_procs,        
  &_tile_type_industry_procs,     
  &_tile_type_tunnelbridge_procs, 
  &_tile_type_unmovable_procs,    
}
Tile callback functions for each type of tile.

See also:
TileType

Definition at line 45 of file landscape.cpp.

Referenced by CmdTerraformLand(), GetProductionAroundTiles(), and VehicleEnterTile().

const byte _tileh_to_sprite[32]

Initial value:

 {
  0, 1, 2, 3, 4, 5, 6,  7, 8, 9, 10, 11, 12, 13, 14, 0,
  0, 0, 0, 0, 0, 0, 0, 16, 0, 0,  0, 17,  0, 15, 18, 0,
}

Definition at line 60 of file landscape.cpp.


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