Files
@ r10044:a1e2a7856c4e
Branch filter:
Location: cpp/openttd-patchpack/source/src/unmovable_map.h
r10044:a1e2a7856c4e
6.1 KiB
text/x-c
(svn r14204) -Fix (r7475): when determining length of a string with limited size, first check if we are not out of bounds already
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | /* $Id$ */
/** @file unmovable_map.h Map accessors for unmovable tiles. */
#ifndef UNMOVABLE_MAP_H
#define UNMOVABLE_MAP_H
#include "core/bitmath_func.hpp"
#include "tile_map.h"
enum {
HQ_NUM_TILE = 4, ///< Number of HQ tiles
HQ_NUM_SIZE = 5 ///< Number of stages of an HQ
};
/** Types of unmovable structure */
enum UnmovableType {
UNMOVABLE_TRANSMITTER = 0, ///< The large antenna
UNMOVABLE_LIGHTHOUSE = 1, ///< The nice lighthouse
UNMOVABLE_STATUE = 2, ///< Statue in towns
UNMOVABLE_OWNED_LAND = 3, ///< Owned land 'flag'
UNMOVABLE_HQ_NORTH = 0x80, ///< Offset for the northern HQ tile
UNMOVABLE_HQ_WEST = 0x81, ///< Offset for the western HQ tile
UNMOVABLE_HQ_EAST = 0x82, ///< Offset for the eastern HQ tile
UNMOVABLE_HQ_SOUTH = 0x83, ///< Offset for the southern HQ tile
/** End of the HQ (rather end + 1 for IsInside) */
UNMOVABLE_HQ_END = UNMOVABLE_HQ_NORTH + HQ_NUM_SIZE * HQ_NUM_TILE
};
/**
* Gets the UnmovableType of the given unmovable tile
* @param t the tile to get the type from.
* @pre IsTileType(t, MP_UNMOVABLE)
* @return the type.
*/
static inline UnmovableType GetUnmovableType(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE));
return (UnmovableType)_m[t].m5;
}
/**
* Does the given tile have a transmitter?
* @param t the tile to inspect.
* @return true if and only if the tile has a transmitter.
*/
static inline bool IsTransmitterTile(TileIndex t)
{
return IsTileType(t, MP_UNMOVABLE) && GetUnmovableType(t) == UNMOVABLE_TRANSMITTER;
}
/**
* Is this unmovable tile an 'owned land' tile?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_UNMOVABLE)
* @return true if and only if the tile is an 'owned land' tile.
*/
static inline bool IsOwnedLand(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE));
return GetUnmovableType(t) == UNMOVABLE_OWNED_LAND;
}
/**
* Is the given tile (pre-)owned by someone (the little flags)?
* @param t the tile to inspect.
* @return true if and only if the tile is an 'owned land' tile.
*/
static inline bool IsOwnedLandTile(TileIndex t)
{
return IsTileType(t, MP_UNMOVABLE) && IsOwnedLand(t);
}
/**
* Is this unmovable tile a HQ tile?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_UNMOVABLE)
* @return true if and only if the tile is a HQ tile.
*/
static inline bool IsCompanyHQ(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE));
return HasBit(_m[t].m5, 7);
}
/**
* Is this unmovable tile a statue?
* @param t the tile to inspect.
* @pre IsTileType(t, MP_UNMOVABLE)
* @return true if and only if the tile is a statue.
*/
static inline bool IsStatue(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE));
return GetUnmovableType(t) == UNMOVABLE_STATUE;
}
/**
* Is the given tile a statue?
* @param t the tile to inspect.
* @return true if and only if the tile is a statue.
*/
static inline bool IsStatueTile(TileIndex t)
{
return IsTileType(t, MP_UNMOVABLE) && IsStatue(t);
}
/**
* Get the town of the given statue tile.
* @param t the tile of the statue.
* @pre IsStatueTile(t)
* @return the town the given statue is in.
*/
static inline TownID GetStatueTownID(TileIndex t)
{
assert(IsStatueTile(t));
return _m[t].m2;
}
/**
* Get the 'stage' of the HQ.
* @param t a tile of the HQ.
* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
* @return the 'stage' of the HQ.
*/
static inline byte GetCompanyHQSize(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
return GB(_m[t].m5, 2, 3);
}
/**
* Get the 'section' (including stage) of the HQ.
* @param t a tile of the HQ.
* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
* @return the 'section' of the HQ.
*/
static inline byte GetCompanyHQSection(TileIndex t)
{
assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
return GB(_m[t].m5, 0, 5);
}
/**
* Enlarge the given HQ to the given size. If the new size
* is larger than the current size, nothing happens.
* @param t the tile of the HQ.
* @param size the new size of the HQ.
* @pre t is the northern tile of the HQ
*/
static inline void EnlargeCompanyHQ(TileIndex t, byte size)
{
assert(GB(GetCompanyHQSection(t), 0, 2) == 0);
size *= 4;
if (size <= _m[t].m5 - UNMOVABLE_HQ_NORTH) return;
_m[t + TileDiffXY(0, 0)].m5 = UNMOVABLE_HQ_NORTH + size;
_m[t + TileDiffXY(0, 1)].m5 = UNMOVABLE_HQ_WEST + size;
_m[t + TileDiffXY(1, 0)].m5 = UNMOVABLE_HQ_EAST + size;
_m[t + TileDiffXY(1, 1)].m5 = UNMOVABLE_HQ_SOUTH + size;
}
/**
* Make an Unmovable tile.
* @note do not use this function directly. Use one of the other Make* functions.
* @param t the tile to make unmovable.
* @param u the unmovable type of the tile.
* @param o the new owner of the tile.
*/
static inline void MakeUnmovable(TileIndex t, UnmovableType u, Owner o)
{
SetTileType(t, MP_UNMOVABLE);
SetTileOwner(t, o);
_m[t].m2 = 0;
_m[t].m3 = 0;
_m[t].m4 = 0;
_m[t].m5 = u;
}
/**
* Make a transmitter tile.
* @param t the tile to make a transmitter.
*/
static inline void MakeTransmitter(TileIndex t)
{
MakeUnmovable(t, UNMOVABLE_TRANSMITTER, OWNER_NONE);
}
/**
* Make a lighthouse tile.
* @param t the tile to make a transmitter.
*/
static inline void MakeLighthouse(TileIndex t)
{
MakeUnmovable(t, UNMOVABLE_LIGHTHOUSE, OWNER_NONE);
}
/**
* Make a statue tile.
* @param t the tile to make a statue.
* @param o the owner of the statue.
* @param town_id the town the statue was built in.
*/
static inline void MakeStatue(TileIndex t, Owner o, TownID town_id)
{
MakeUnmovable(t, UNMOVABLE_STATUE, o);
_m[t].m2 = town_id;
}
/**
* Make an 'owned land' tile.
* @param t the tile to make an 'owned land' tile.
* @param o the owner of the land.
*/
static inline void MakeOwnedLand(TileIndex t, Owner o)
{
MakeUnmovable(t, UNMOVABLE_OWNED_LAND, o);
}
/**
* Make an HQ with the give tile as it's northern tile.
* @param t the tile to make the northern tile of a HQ.
* @param o the owner of the HQ.
*/
static inline void MakeCompanyHQ(TileIndex t, Owner o)
{
MakeUnmovable(t + TileDiffXY(0, 0), UNMOVABLE_HQ_NORTH, o);
MakeUnmovable(t + TileDiffXY(0, 1), UNMOVABLE_HQ_WEST, o);
MakeUnmovable(t + TileDiffXY(1, 0), UNMOVABLE_HQ_EAST, o);
MakeUnmovable(t + TileDiffXY(1, 1), UNMOVABLE_HQ_SOUTH, o);
}
#endif /* UNMOVABLE_MAP_H */
|