author | richk |
Tue, 17 Jun 2008 13:22:13 +0000 | |
branch | NewGRF_ports |
changeset 10994 | cd9968b6f96b |
parent 6872 | 1c4a4a609f85 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file map_type.h Types related to maps. */ |
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#ifndef MAP_TYPE_H |
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#define MAP_TYPE_H |
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/** |
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* Data that is stored per tile. Also used TileExtended for this. |
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* Look at docs/landscape.html for the exact meaning of the members. |
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*/ |
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struct Tile { |
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byte type_height; ///< The type (bits 4..7) and height of the northern corner |
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byte m1; ///< Primarily used for ownership information |
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uint16 m2; ///< Primarily used for indices to towns, industries and stations |
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byte m3; ///< General purpose |
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byte m4; ///< General purpose |
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byte m5; ///< General purpose |
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byte m6; ///< Primarily used for bridges and rainforest/desert |
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}; |
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/** |
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* Data that is stored per tile. Also used Tile for this. |
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* Look at docs/landscape.html for the exact meaning of the members. |
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*/ |
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struct TileExtended { |
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byte m7; ///< Primarily used for newgrf support |
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}; |
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/** |
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* An offset value between to tiles. |
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* |
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* This value is used fro the difference between |
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* to tiles. It can be added to a tileindex to get |
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* the resulting tileindex of the start tile applied |
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* with this saved difference. |
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* |
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* @see TileDiffXY(int, int) |
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*/ |
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typedef int32 TileIndexDiff; |
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/** |
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* A pair-construct of a TileIndexDiff. |
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* |
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* This can be used to save the difference between to |
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* tiles as a pair of x and y value. |
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*/ |
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struct TileIndexDiffC { |
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int16 x; ///< The x value of the coordinate |
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int16 y; ///< The y value of the coordinate |
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}; |
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/** |
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* Approximation of the length of a straight track, relative to a diagonal |
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* track (ie the size of a tile side). |
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* |
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* #defined instead of const so it can |
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* stay integer. (no runtime float operations) Is this needed? |
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* Watch out! There are _no_ brackets around here, to prevent intermediate |
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* rounding! Be careful when using this! |
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* This value should be sqrt(2)/2 ~ 0.7071 |
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*/ |
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#define STRAIGHT_TRACK_LENGTH 7071/10000 |
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#endif /* MAP_TYPE_H */ |