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47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* $Id$ */
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/** @file autoslope.h Functions related to autoslope. */
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#ifndef AUTOSLOPE_H
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#define AUTOSLOPE_H
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#include "settings_type.h"
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#include "player_func.h"
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#include "depot_func.h"
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/**
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* Autoslope check for tiles with an entrance on an edge.
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* E.g. depots and non-drive-through-road-stops.
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*
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* The test succeeds if the slope is not steep and at least one corner of the entrance edge is on the TileMaxZ() level.
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*
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* @note The test does not check if autoslope is enabled at all.
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*
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* @param tile The tile.
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* @param z_new New TileZ.
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* @param tileh_new New TileSlope.
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* @param entrance Entrance edge.
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* @return true iff terraforming is allowed.
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*/
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static inline bool AutoslopeCheckForEntranceEdge(TileIndex tile, uint z_new, Slope tileh_new, DiagDirection entrance)
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{
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if (IsSteepSlope(tileh_new) || (GetTileMaxZ(tile) != z_new + GetSlopeMaxZ(tileh_new))) return false;
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return ((tileh_new == SLOPE_FLAT) || CanBuildDepotByTileh(entrance, tileh_new));
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}
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/**
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* Tests if autoslope is enabled for _current_player.
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*
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* Autoslope is disabled for town/industry construction and old ai players.
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*
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* @return true iff autoslope is enabled.
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*/
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static inline bool AutoslopeEnabled()
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{
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return (_patches.autoslope &&
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((IsValidPlayer(_current_player) && !_is_old_ai_player) ||
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(_current_player == OWNER_NONE && _game_mode == GM_EDITOR)));
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}
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#endif /* AUTOSLOPE_H */
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