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/* $Id$ */
/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file water.h Functions related to water (management) */
#ifndef WATER_H
#define WATER_H
#include "water_map.h"
#include "economy_func.h"
/**
* Describes the behaviour of a tile during flooding.
*/
enum FloodingBehaviour {
FLOOD_NONE, ///< The tile does not flood neighboured tiles.
FLOOD_ACTIVE, ///< The tile floods neighboured tiles.
FLOOD_PASSIVE, ///< The tile does not actively flood neighboured tiles, but it prevents them from drying up.
FLOOD_DRYUP, ///< The tile drys up if it is not constantly flooded from neighboured tiles.
};
FloodingBehaviour GetFloodingBehaviour(TileIndex tile);
void TileLoop_Water(TileIndex tile);
bool FloodHalftile(TileIndex t);
void DoFloodTile(TileIndex target);
void ConvertGroundTilesIntoWaterTiles();
void DrawShipDepotSprite(int x, int y, Axis axis, DepotPart part);
void DrawWaterClassGround(const struct TileInfo *ti);
void DrawShoreTile(Slope tileh);
void MakeWaterKeepingClass(TileIndex tile, Owner o);
void CheckForDockingTile(TileIndex t);
bool RiverModifyDesertZone(TileIndex tile, void *data);
static const uint RIVER_OFFSET_DESERT_DISTANCE = 5; ///< Circular tile search radius to create non-desert around a river tile.
bool IsWateredTile(TileIndex tile, Direction from);
/**
* Calculates the maintenance cost of a number of canal tiles.
* @param num Number of canal tiles.
* @return Total cost.
*/
static inline Money CanalMaintenanceCost(uint32 num)
{
return (_price[PR_INFRASTRUCTURE_WATER] * num * (1 + IntSqrt(num))) >> 6; // 6 bits scaling.
}
#endif /* WATER_H */
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