mirror of https://github.com/OpenTTD/OpenTTD.git
57 lines
2.5 KiB
C
57 lines
2.5 KiB
C
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file linkgraph_type.h Declaration of link graph types used for cargo distribution. */
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#ifndef LINKGRAPH_TYPE_H
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#define LINKGRAPH_TYPE_H
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typedef uint16_t LinkGraphID;
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static const LinkGraphID INVALID_LINK_GRAPH = UINT16_MAX;
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typedef uint16_t LinkGraphJobID;
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static const LinkGraphJobID INVALID_LINK_GRAPH_JOB = UINT16_MAX;
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typedef uint16_t NodeID;
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static const NodeID INVALID_NODE = UINT16_MAX;
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enum DistributionType : uint8_t {
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DT_BEGIN = 0,
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DT_MIN = 0,
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DT_MANUAL = 0, ///< Manual distribution. No link graph calculations are run.
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DT_ASYMMETRIC = 1, ///< Asymmetric distribution. Usually cargo will only travel in one direction.
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DT_MAX_NONSYMMETRIC = 1, ///< Maximum non-symmetric distribution.
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DT_SYMMETRIC = 2, ///< Symmetric distribution. The same amount of cargo travels in each direction between each pair of nodes.
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DT_MAX = 2,
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DT_NUM = 3,
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DT_END = 3
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};
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/**
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* Special modes for updating links. 'Restricted' means that vehicles with
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* 'no loading' orders are serving the link. If a link is only served by
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* such vehicles it's 'fully restricted'. This means the link can be used
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* by cargo arriving in such vehicles, but not by cargo generated or
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* transferring at the source station of the link. In order to find out
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* about this condition we keep two update timestamps in each link, one for
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* the restricted and one for the unrestricted part of it. If either one
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* times out while the other is still valid the link becomes fully
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* restricted or fully unrestricted, respectively.
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* Refreshing a link makes just sure a minimum capacity is kept. Increasing
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* actually adds the given capacity.
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*/
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enum EdgeUpdateMode {
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EUM_INCREASE = 1, ///< Increase capacity.
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EUM_REFRESH = 1 << 1, ///< Refresh capacity.
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EUM_RESTRICTED = 1 << 2, ///< Use restricted link.
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EUM_UNRESTRICTED = 1 << 3, ///< Use unrestricted link.
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};
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DECLARE_ENUM_AS_BIT_SET(EdgeUpdateMode)
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#endif /* LINKGRAPH_TYPE_H */
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