Files @ r2008:5e435ad4c8e4
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Location: cpp/openttd-patchpack/source/tile.h

hackykid
(svn r2516) - Feature: [pbs] Implement path-based-signalling. This allows multiple trains within the same signal block, provided their paths dont intersect. For this the block must have all exit and entry signals be pbs signals. Place these by ctrl-clicking 4 times on a normal signal.
- Feature: [pbs] Implement autoplacement of pbs blocks, when a block has an entry and an exit pbs signal, covert the entire block to pbs. Can be turned off in the patch settings.
- Feature: [pbs] Allow showing of reserved status by making the tracks darker, when the pbs debug level is at least 1.
#ifndef TILE_H
#define TILE_H

#include "macros.h"
#include "map.h"

typedef enum TileTypes {
	MP_CLEAR,
	MP_RAILWAY,
	MP_STREET,
	MP_HOUSE,
	MP_TREES,
	MP_STATION,
	MP_WATER,
	MP_VOID, // invisible tiles at the SW and SE border
	MP_INDUSTRY,
	MP_TUNNELBRIDGE,
	MP_UNMOVABLE
} TileType;

/* Direction as commonly used in v->direction, 8 way. */
typedef enum Directions {
	DIR_N   = 0,
	DIR_NE  = 1,      /* Northeast, upper right on your monitor */
	DIR_E   = 2,
	DIR_SE  = 3,
	DIR_S   = 4,
	DIR_SW  = 5,
	DIR_W   = 6,
	DIR_NW  = 7,
	DIR_END,
	INVALID_DIR = 0xFF,
} Direction;

/* Direction commonly used as the direction of entering and leaving tiles, 4-way */
typedef enum DiagonalDirections {
	DIAGDIR_NE  = 0,      /* Northeast, upper right on your monitor */
	DIAGDIR_SE  = 1,
	DIAGDIR_SW  = 2,
	DIAGDIR_NW  = 3,
	DIAGDIR_END,
	INVALID_DIAGDIR = 0xFF,
} DiagDirection;

void SetMapExtraBits(TileIndex tile, byte flags);
uint GetMapExtraBits(TileIndex tile);

uint GetTileSlope(TileIndex tile, uint *h);
uint GetTileZ(TileIndex tile);

static inline bool CorrectZ(uint tileh)
{
	/* tile height must be corrected if the north corner is not raised, but
	 * any other corner is. These are the cases 1 till 7 */
	return IS_INT_INSIDE(tileh, 1, 8);
}

static inline uint TileHeight(TileIndex tile)
{
	assert(tile < MapSize());
	return GB(_map_type_and_height[tile], 0, 4);
}

static inline void SetTileHeight(TileIndex tile, uint height)
{
	assert(tile < MapSize());
	assert(height < 16);
	SB(_map_type_and_height[tile], 0, 4, height);
}

static inline uint TilePixelHeight(TileIndex tile)
{
	return TileHeight(tile) * 8;
}

static inline TileType GetTileType(TileIndex tile)
{
	assert(tile < MapSize());
	return GB(_map_type_and_height[tile], 4, 4);
}

static inline void SetTileType(TileIndex tile, TileType type)
{
	assert(tile < MapSize());
	SB(_map_type_and_height[tile], 4, 4, type);
}

static inline bool IsTileType(TileIndex tile, TileType type)
{
	return GetTileType(tile) == type;
}

static inline Owner GetTileOwner(TileIndex tile)
{
	assert(tile < MapSize());
	assert(!IsTileType(tile, MP_HOUSE));
	assert(!IsTileType(tile, MP_VOID));
	assert(!IsTileType(tile, MP_INDUSTRY));

	return _map_owner[tile];
}

static inline void SetTileOwner(TileIndex tile, Owner owner)
{
	assert(tile < MapSize());
	assert(!IsTileType(tile, MP_HOUSE));
	assert(!IsTileType(tile, MP_VOID));
	assert(!IsTileType(tile, MP_INDUSTRY));

	_map_owner[tile] = owner;
}

static inline bool IsTileOwner(TileIndex tile, Owner owner)
{
	return GetTileOwner(tile) == owner;
}

#endif