src/water_map.h
author rubidium
Tue, 19 Jun 2007 21:15:14 +0000
changeset 7470 73cfc62015c9
parent 6928 44797333bcbf
child 6871 5a9dc001e1ad
child 8235 fc75e5ad02b6
permissions -rw-r--r--
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/* $Id$ */
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/** @file water_map.h */
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#ifndef WATER_MAP_H
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#define WATER_MAP_H
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enum WaterTileType {
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	WATER_TILE_CLEAR,
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	WATER_TILE_COAST,
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	WATER_TILE_LOCK,
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	WATER_TILE_DEPOT,
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};
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enum DepotPart {
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	DEPOT_NORTH = 0x80,
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	DEPOT_SOUTH = 0x81,
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	DEPOT_END   = 0x84,
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};
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enum LockPart {
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	LOCK_MIDDLE = 0x10,
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	LOCK_LOWER  = 0x14,
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	LOCK_UPPER  = 0x18,
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	LOCK_END    = 0x1C
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};
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static inline WaterTileType GetWaterTileType(TileIndex t)
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{
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	if (_m[t].m5 == 0) return WATER_TILE_CLEAR;
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	if (_m[t].m5 == 1) return WATER_TILE_COAST;
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	if (IS_INT_INSIDE(_m[t].m5, LOCK_MIDDLE, LOCK_END)) return WATER_TILE_LOCK;
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	assert(IS_INT_INSIDE(_m[t].m5, DEPOT_NORTH, DEPOT_END));
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	return WATER_TILE_DEPOT;
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}
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static inline bool IsWater(TileIndex t)
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{
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	return GetWaterTileType(t) == WATER_TILE_CLEAR;
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}
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static inline bool IsCoast(TileIndex t)
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{
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	return GetWaterTileType(t) == WATER_TILE_COAST;
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}
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static inline bool IsCanal(TileIndex t)
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{
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	return GetWaterTileType(t) == WATER_TILE_CLEAR && GetTileOwner(t) != OWNER_WATER;
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}
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static inline bool IsClearWaterTile(TileIndex t)
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{
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	return IsTileType(t, MP_WATER) && IsWater(t) && GetTileSlope(t, NULL) == SLOPE_FLAT;
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}
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static inline TileIndex GetOtherShipDepotTile(TileIndex t)
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{
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	return t + (HASBIT(_m[t].m5, 0) ? -1 : 1) * (HASBIT(_m[t].m5, 1) ? TileDiffXY(0, 1) : TileDiffXY(1, 0));
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}
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static inline TileIndex IsShipDepot(TileIndex t)
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{
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	return IS_INT_INSIDE(_m[t].m5, DEPOT_NORTH, DEPOT_END);
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}
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static inline Axis GetShipDepotAxis(TileIndex t)
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{
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	return (Axis)GB(_m[t].m5, 1, 1);
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}
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static inline DiagDirection GetShipDepotDirection(TileIndex t)
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{
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	return XYNSToDiagDir(GetShipDepotAxis(t), GB(_m[t].m5, 0, 1));
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}
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static inline DiagDirection GetLockDirection(TileIndex t)
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{
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	return (DiagDirection)GB(_m[t].m5, 0, 2);
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}
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static inline byte GetSection(TileIndex t)
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{
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	assert(GetWaterTileType(t) == WATER_TILE_LOCK || GetWaterTileType(t) == WATER_TILE_DEPOT);
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	return GB(_m[t].m5, 0, 4);
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}
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static inline void MakeWater(TileIndex t)
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{
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	SetTileType(t, MP_WATER);
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	SetTileOwner(t, OWNER_WATER);
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	_m[t].m2 = 0;
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	_m[t].m3 = 0;
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	_m[t].m4 = 0;
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	_m[t].m5 = 0;
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}
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static inline void MakeShore(TileIndex t)
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{
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	SetTileType(t, MP_WATER);
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	SetTileOwner(t, OWNER_WATER);
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	_m[t].m2 = 0;
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	_m[t].m3 = 0;
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	_m[t].m4 = 0;
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	_m[t].m5 = 1;
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}
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static inline void MakeCanal(TileIndex t, Owner o)
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{
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	SetTileType(t, MP_WATER);
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	SetTileOwner(t, o);
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	_m[t].m2 = 0;
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	_m[t].m3 = 0;
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	_m[t].m4 = 0;
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	_m[t].m5 = 0;
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}
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static inline void MakeShipDepot(TileIndex t, Owner o, DepotPart base, Axis a)
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{
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	SetTileType(t, MP_WATER);
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	SetTileOwner(t, o);
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	_m[t].m2 = 0;
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	_m[t].m3 = 0;
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	_m[t].m4 = 0;
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	_m[t].m5 = base + a * 2;
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}
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static inline void MakeLockTile(TileIndex t, Owner o, byte section)
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{
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	SetTileType(t, MP_WATER);
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	SetTileOwner(t, o);
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	_m[t].m2 = 0;
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	_m[t].m3 = 0;
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	_m[t].m4 = 0;
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	_m[t].m5 = section;
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}
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static inline void MakeLock(TileIndex t, Owner o, DiagDirection d)
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{
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	TileIndexDiff delta = TileOffsByDiagDir(d);
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	MakeLockTile(t, o, LOCK_MIDDLE + d);
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	MakeLockTile(t - delta, o, LOCK_LOWER + d);
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	MakeLockTile(t + delta, o, LOCK_UPPER + d);
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}
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#endif /* WATER_MAP_H */