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annotate src/autoslope.h @ 8962:322e2779f67a draft

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(svn r12754) -Codechange: split depot.h into depot_map.h, depot_func.h and depot_base.h and remove quite a lot of unneeded (before this) includes of depot.h.
author rubidium <rubidium@openttd.org>
date Thu, 17 Apr 2008 19:10:30 +0000
parents 7d580c9c41fb
children d48433370037
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* $Id$ */
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2
9eb4198ab848 (svn r11108) -Fix (r11107): somebody forgot to add some file ;) Spoils the fun of the previous cryptic message though.
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3 /** @file autoslope.h */
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4
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5 #ifndef AUTOSLOPE_H
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6 #define AUTOSLOPE_H
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7
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165064de4629 (svn r11774) -Change: do not include variables.h in a header when it is not needed.
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8 #include "settings_type.h"
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9 #include "player_func.h"
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322e2779f67a (svn r12754) -Codechange: split depot.h into depot_map.h, depot_func.h and depot_base.h and remove quite a lot of unneeded (before this) includes of depot.h.
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10 #include "depot_func.h"
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11
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12 /**
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13 * Autoslope check for tiles with an entrance on an edge.
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14 * E.g. depots and non-drive-through-road-stops.
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15 *
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16 * 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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17 *
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18 * @note The test does not check if autoslope is enabled at all.
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19 *
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20 * @param tile The tile.
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21 * @param z_new New TileZ.
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22 * @param tileh_new New TileSlope.
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23 * @param entrance Entrance edge.
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24 * @return true iff terraforming is allowed.
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25 */
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26 static inline bool AutoslopeCheckForEntranceEdge(TileIndex tile, uint z_new, Slope tileh_new, DiagDirection entrance)
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27 {
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28 if (IsSteepSlope(tileh_new) || (GetTileMaxZ(tile) != z_new + GetSlopeMaxZ(tileh_new))) return false;
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29 return ((tileh_new == SLOPE_FLAT) || CanBuildDepotByTileh(entrance, tileh_new));
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30 }
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31
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32 /**
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33 * Tests if autoslope is enabled for _current_player.
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34 *
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35 * Autoslope is disabled for town/industry construction and old ai players.
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36 *
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37 * @return true iff autoslope is enabled.
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38 */
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39 static inline bool AutoslopeEnabled()
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40 {
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41 return (_patches.autoslope &&
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42 ((IsValidPlayer(_current_player) && !_is_old_ai_player) ||
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43 (_current_player == OWNER_NONE && _game_mode == GM_EDITOR)));
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44 }
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45
9eb4198ab848 (svn r11108) -Fix (r11107): somebody forgot to add some file ;) Spoils the fun of the previous cryptic message though.
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46 #endif /* AUTOSLOPE_H */