Files @ r11049:6eb2c87ed64a
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Location: cpp/openttd-patchpack/source/src/ai/api/ai_marine.cpp

peter1138
(svn r15389) -Feature: Add ability to select which base graphics set is used from the Game Options window. The change takes effect when the window is closed. This option can only be used from the intro menu, as reloading graphics during a game may cause issues.
/* $Id$ */

/** @file ai_marine.cpp Implementation of AIMarine. */

#include "ai_marine.hpp"
#include "../../station_map.h"
#include "../../tile_cmd.h"


/* static */ bool AIMarine::IsWaterDepotTile(TileIndex tile)
{
	if (!::IsValidTile(tile)) return false;

	return ::IsTileType(tile, MP_WATER) && ::GetWaterTileType(tile) == WATER_TILE_DEPOT;
}

/* static */ bool AIMarine::IsDockTile(TileIndex tile)
{
	if (!::IsValidTile(tile)) return false;

	return ::IsTileType(tile, MP_STATION) && ::IsDock(tile);
}

/* static */ bool AIMarine::IsBuoyTile(TileIndex tile)
{
	if (!::IsValidTile(tile)) return false;

	return ::IsTileType(tile, MP_STATION) && ::IsBuoy(tile);
}

/* static */ bool AIMarine::IsLockTile(TileIndex tile)
{
	if (!::IsValidTile(tile)) return false;

	return ::IsTileType(tile, MP_WATER) && ::GetWaterTileType(tile) == WATER_TILE_LOCK;
}

/* static */ bool AIMarine::IsCanalTile(TileIndex tile)
{
	if (!::IsValidTile(tile)) return false;

	return ::IsTileType(tile, MP_WATER) && ::IsCanal(tile);
}

/* static */ bool AIMarine::AreWaterTilesConnected(TileIndex t1, TileIndex t2)
{
	if (!::IsValidTile(t1)) return false;
	if (!::IsValidTile(t2)) return false;

	/* Tiles not neighbouring */
	if (::DistanceManhattan(t1, t2) != 1) return false;
	if (t1 > t2) Swap(t1, t2);

	DiagDirection to_other_tile = (TileX(t1) == TileX(t2)) ? DIAGDIR_SE : DIAGDIR_SW;

	/* Determine the reachable tracks from the shared edge */
	TrackBits gtts2 = ::TrackStatusToTrackBits(::GetTileTrackStatus(t2, TRANSPORT_WATER, 0, to_other_tile)) & ::DiagdirReachesTracks(to_other_tile);
	if (gtts2 == TRACK_BIT_NONE) return false;

	to_other_tile = ReverseDiagDir(to_other_tile);
	TrackBits gtts1 = ::TrackStatusToTrackBits(::GetTileTrackStatus(t1, TRANSPORT_WATER, 0, to_other_tile)) & ::DiagdirReachesTracks(to_other_tile);

	return gtts1 != TRACK_BIT_NONE;
}

/* static */ bool AIMarine::BuildWaterDepot(TileIndex tile, bool vertical)
{
	EnforcePrecondition(false, ::IsValidTile(tile));

	return AIObject::DoCommand(tile, vertical, 0, CMD_BUILD_SHIP_DEPOT);
}

/* static */ bool AIMarine::BuildDock(TileIndex tile, bool join_adjacent)
{
	EnforcePrecondition(false, ::IsValidTile(tile));

	return AIObject::DoCommand(tile, join_adjacent ? 0 : 1, INVALID_STATION << 16, CMD_BUILD_DOCK);
}

/* static */ bool AIMarine::BuildBuoy(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_BUILD_BUOY);
}

/* static */ bool AIMarine::BuildLock(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_BUILD_LOCK);
}

/* static */ bool AIMarine::BuildCanal(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));

	return AIObject::DoCommand(tile, tile, 0, CMD_BUILD_CANAL);
}

/* static */ bool AIMarine::RemoveWaterDepot(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));
	EnforcePrecondition(false, IsWaterDepotTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}

/* static */ bool AIMarine::RemoveDock(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));
	EnforcePrecondition(false, IsDockTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}

/* static */ bool AIMarine::RemoveBuoy(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));
	EnforcePrecondition(false, IsBuoyTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}

/* static */ bool AIMarine::RemoveLock(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));
	EnforcePrecondition(false, IsLockTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}

/* static */ bool AIMarine::RemoveCanal(TileIndex tile)
{
	EnforcePrecondition(false, ::IsValidTile(tile));
	EnforcePrecondition(false, IsCanalTile(tile));

	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
}