mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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40eecb3391
This change is intended to make it easier to make depot behaviour consistent and faster to code when adding more features in the future The user interface should hopefully not be affected by this
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/* $Id$ */
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#ifndef DEPOT_H
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#define DEPOT_H
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/** @file depot.h Header files for depots (not hangars)
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* @see depot.c */
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#include "direction.h"
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#include "pool.h"
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#include "tile.h"
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#include "variables.h"
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struct Depot {
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TileIndex xy;
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TownID town_index;
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DepotID index;
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};
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extern MemoryPool _depot_pool;
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/**
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* Get the pointer to the depot with index 'index'
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*/
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static inline Depot *GetDepot(DepotID index)
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{
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return (Depot*)GetItemFromPool(&_depot_pool, index);
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}
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/**
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* Get the current size of the DepotPool
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*/
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static inline uint16 GetDepotPoolSize(void)
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{
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return _depot_pool.total_items;
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}
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/**
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* Check if a depot really exists.
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*/
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static inline bool IsValidDepot(const Depot *depot)
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{
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return depot != NULL && depot->xy != 0;
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}
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static inline bool IsValidDepotID(uint index)
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{
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return index < GetDepotPoolSize() && IsValidDepot(GetDepot(index));
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}
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void DestroyDepot(Depot *depot);
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static inline void DeleteDepot(Depot *depot)
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{
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DestroyDepot(depot);
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depot->xy = 0;
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}
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void ShowDepotWindow(TileIndex tile, byte type);
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#define FOR_ALL_DEPOTS_FROM(d, start) for (d = GetDepot(start); d != NULL; d = (d->index + 1 < GetDepotPoolSize()) ? GetDepot(d->index + 1) : NULL) if (IsValidDepot(d))
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#define FOR_ALL_DEPOTS(d) FOR_ALL_DEPOTS_FROM(d, 0)
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#define MIN_SERVINT_PERCENT 5
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#define MAX_SERVINT_PERCENT 90
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#define MIN_SERVINT_DAYS 30
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#define MAX_SERVINT_DAYS 800
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/**
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* Get the service interval domain.
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* Get the new proposed service interval for the vehicle is indeed, clamped
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* within the given bounds. @see MIN_SERVINT_PERCENT ,etc.
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* @param index proposed service interval
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*/
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static inline Date GetServiceIntervalClamped(uint index)
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{
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return (_patches.servint_ispercent) ? clamp(index, MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT) : clamp(index, MIN_SERVINT_DAYS, MAX_SERVINT_DAYS);
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}
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/**
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* Check if a tile is a depot of the given type.
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*/
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static inline bool IsTileDepotType(TileIndex tile, TransportType type)
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{
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switch (type) {
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case TRANSPORT_RAIL:
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return IsTileType(tile, MP_RAILWAY) && (_m[tile].m5 & 0xFC) == 0xC0;
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case TRANSPORT_ROAD:
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return IsTileType(tile, MP_STREET) && (_m[tile].m5 & 0xF0) == 0x20;
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case TRANSPORT_WATER:
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return IsTileType(tile, MP_WATER) && (_m[tile].m5 & ~3) == 0x80;
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default:
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assert(0);
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return false;
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}
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}
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/**
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* Find out if the slope of the tile is suitable to build a depot of given direction
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* @param direction The direction in which the depot's exit points. Starts with 0 as NE and goes Clockwise
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* @param tileh The slope of the tile in question
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* @return true if the construction is possible
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* This is checked by the ugly 0x4C >> direction magic, which does the following:
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* 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
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* So: for direction (only the significant bits are shown)<p>
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* 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
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* 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
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* 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
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* 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
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* So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh
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*/
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static inline bool CanBuildDepotByTileh(uint32 direction, Slope tileh)
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{
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return ((0x4C >> direction) & tileh) != 0;
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}
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Depot *GetDepotByTile(TileIndex tile);
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void InitializeDepots(void);
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Depot *AllocateDepot(void);
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#endif /* DEPOT_H */
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