mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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273 lines
7.2 KiB
C
273 lines
7.2 KiB
C
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file unmovable_map.h Map accessors for unmovable tiles. */
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#ifndef UNMOVABLE_MAP_H
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#define UNMOVABLE_MAP_H
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#include "core/bitmath_func.hpp"
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#include "tile_map.h"
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/** Types of unmovable structure */
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enum UnmovableType {
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UNMOVABLE_TRANSMITTER = 0, ///< The large antenna
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UNMOVABLE_LIGHTHOUSE = 1, ///< The nice lighthouse
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UNMOVABLE_STATUE = 2, ///< Statue in towns
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UNMOVABLE_OWNED_LAND = 3, ///< Owned land 'flag'
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UNMOVABLE_HQ = 4, ///< HeadQuarter of a player
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UNMOVABLE_MAX,
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};
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/**
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* Gets the UnmovableType of the given unmovable tile
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* @param t the tile to get the type from.
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* @pre IsTileType(t, MP_UNMOVABLE)
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* @return the type.
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*/
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static inline UnmovableType GetUnmovableType(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE));
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return (UnmovableType)_m[t].m5;
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}
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/**
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* Does the given tile have a transmitter?
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* @param t the tile to inspect.
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* @return true if and only if the tile has a transmitter.
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*/
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static inline bool IsTransmitterTile(TileIndex t)
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{
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return IsTileType(t, MP_UNMOVABLE) && GetUnmovableType(t) == UNMOVABLE_TRANSMITTER;
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}
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/**
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* Is this unmovable tile an 'owned land' tile?
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* @param t the tile to inspect.
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* @pre IsTileType(t, MP_UNMOVABLE)
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* @return true if and only if the tile is an 'owned land' tile.
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*/
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static inline bool IsOwnedLand(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE));
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return GetUnmovableType(t) == UNMOVABLE_OWNED_LAND;
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}
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/**
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* Is the given tile (pre-)owned by someone (the little flags)?
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* @param t the tile to inspect.
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* @return true if and only if the tile is an 'owned land' tile.
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*/
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static inline bool IsOwnedLandTile(TileIndex t)
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{
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return IsTileType(t, MP_UNMOVABLE) && IsOwnedLand(t);
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}
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/**
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* Is this unmovable tile a HQ tile?
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* @param t the tile to inspect.
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* @pre IsTileType(t, MP_UNMOVABLE)
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* @return true if and only if the tile is a HQ tile.
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*/
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static inline bool IsCompanyHQ(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE));
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return _m[t].m5 == UNMOVABLE_HQ;
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}
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/**
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* Is this unmovable tile a statue?
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* @param t the tile to inspect.
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* @pre IsTileType(t, MP_UNMOVABLE)
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* @return true if and only if the tile is a statue.
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*/
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static inline bool IsStatue(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE));
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return GetUnmovableType(t) == UNMOVABLE_STATUE;
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}
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/**
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* Is the given tile a statue?
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* @param t the tile to inspect.
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* @return true if and only if the tile is a statue.
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*/
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static inline bool IsStatueTile(TileIndex t)
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{
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return IsTileType(t, MP_UNMOVABLE) && IsStatue(t);
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}
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/**
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* Get the town of the given statue tile.
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* @param t the tile of the statue.
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* @pre IsStatueTile(t)
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* @return the town the given statue is in.
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*/
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static inline TownID GetStatueTownID(TileIndex t)
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{
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assert(IsStatueTile(t));
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return _m[t].m2;
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}
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/**
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* Get the 'stage' of the HQ.
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* @param t a tile of the HQ.
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* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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* @return the 'stage' of the HQ.
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*/
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static inline byte GetCompanyHQSize(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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return GB(_m[t].m3, 2, 3);
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}
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/**
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* Set the 'stage' of the HQ.
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* @param t a tile of the HQ.
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* @param size the actual stage of the HQ
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* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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*/
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static inline void SetCompanyHQSize(TileIndex t, uint8 size)
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{
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assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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SB(_m[t].m3, 2, 3, size);
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}
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/**
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* Get the 'section' of the HQ.
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* The scetion is in fact which side of teh HQ the tile represent
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* @param t a tile of the HQ.
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* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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* @return the 'section' of the HQ.
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*/
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static inline byte GetCompanyHQSection(TileIndex t)
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{
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assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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return GB(_m[t].m3, 0, 2);
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}
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/**
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* Set the 'section' of the HQ.
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* @param t a tile of the HQ.
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* @param section to be set.
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* @pre IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t)
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*/
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static inline void SetCompanyHQSection(TileIndex t, uint8 section)
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{
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assert(IsTileType(t, MP_UNMOVABLE) && IsCompanyHQ(t));
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SB(_m[t].m3, 0, 2, section);
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}
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/**
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* Enlarge the given HQ to the given size. If the new size
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* is larger than the current size, nothing happens.
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* @param t the tile of the HQ.
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* @param size the new size of the HQ.
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* @pre t is the northern tile of the HQ
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*/
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static inline void EnlargeCompanyHQ(TileIndex t, byte size)
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{
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assert(GetCompanyHQSection(t) == 0);
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assert(size <= 4);
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if (size <= GetCompanyHQSize(t)) return;
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SetCompanyHQSize(t, size);
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SetCompanyHQSize(t + TileDiffXY(0, 1), size);
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SetCompanyHQSize(t + TileDiffXY(1, 0), size);
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SetCompanyHQSize(t + TileDiffXY(1, 1), size);
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}
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/**
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* Make an Unmovable tile.
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* @note do not use this function directly. Use one of the other Make* functions.
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* @param t the tile to make unmovable.
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* @param u the unmovable type of the tile.
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* @param o the new owner of the tile.
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*/
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static inline void MakeUnmovable(TileIndex t, UnmovableType u, Owner o)
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{
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SetTileType(t, MP_UNMOVABLE);
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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 = u;
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SB(_m[t].m6, 2, 4, 0);
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_me[t].m7 = 0;
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}
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/**
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* Make a transmitter tile.
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* @param t the tile to make a transmitter.
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*/
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static inline void MakeTransmitter(TileIndex t)
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{
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MakeUnmovable(t, UNMOVABLE_TRANSMITTER, OWNER_NONE);
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}
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/**
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* Make a lighthouse tile.
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* @param t the tile to make a transmitter.
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*/
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static inline void MakeLighthouse(TileIndex t)
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{
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MakeUnmovable(t, UNMOVABLE_LIGHTHOUSE, OWNER_NONE);
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}
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/**
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* Make a statue tile.
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* @param t the tile to make a statue.
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* @param o the owner of the statue.
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* @param town_id the town the statue was built in.
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*/
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static inline void MakeStatue(TileIndex t, Owner o, TownID town_id)
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{
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MakeUnmovable(t, UNMOVABLE_STATUE, o);
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_m[t].m2 = town_id;
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}
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/**
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* Make an 'owned land' tile.
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* @param t the tile to make an 'owned land' tile.
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* @param o the owner of the land.
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*/
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static inline void MakeOwnedLand(TileIndex t, Owner o)
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{
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MakeUnmovable(t, UNMOVABLE_OWNED_LAND, o);
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}
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/**
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* Make a HeadQuarter tile after making it an Unmovable
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* @param t the tile to make an HQ.
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* @param section the part of the HQ this one will be.
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* @param o the new owner of the tile.
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*/
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static inline void MakeUnmovableHQHelper(TileIndex t, uint8 section, Owner o)
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{
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MakeUnmovable(t, UNMOVABLE_HQ, o);
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SetCompanyHQSection(t, section);
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}
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/**
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* Make an HQ with the give tile as it's northern tile.
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* @param t the tile to make the northern tile of a HQ.
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* @param o the owner of the HQ.
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*/
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static inline void MakeCompanyHQ(TileIndex t, Owner o)
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{
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MakeUnmovableHQHelper(t, 0, o);
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MakeUnmovableHQHelper(t + TileDiffXY(0, 1), 1, o);
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MakeUnmovableHQHelper(t + TileDiffXY(1, 0), 2, o);
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MakeUnmovableHQHelper(t + TileDiffXY(1, 1), 3, o);
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}
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#endif /* UNMOVABLE_MAP_H */
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