blob: b9d609f4ea0f5c01444a2df58c40552c9a42ab06 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* $Id$ */
/*
* 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 ai_map.hpp Everything to query and manipulate map metadata. */
#ifndef AI_MAP_HPP
#define AI_MAP_HPP
#include "ai_object.hpp"
/**
* Class that handles all map related functions.
*/
class AIMap : public AIObject {
public:
#ifdef DEFINE_SCRIPT_FILES
static const int TILE_INVALID = (int)INVALID_TILE; //!< Invalid TileIndex.
#endif /* DEFINE_SCRIPT_FILES */
#ifdef DOXYGEN_SKIP
const static TileIndex TILE_INVALID; //!< Invalid TileIndex.
#endif /* DOXYGEN_SKIP */
static const char *GetClassName() { return "AIMap"; }
/**
* Checks whether the given tile is valid.
* @param tile The tile to check.
* @return True is the tile it within the boundaries of the map.
*/
static bool IsValidTile(TileIndex tile);
/**
* Gets the number of tiles in the map.
* @return The size of the map in tiles.
* @post Return value is always positive.
*/
static TileIndex GetMapSize();
/**
* Gets the amount of tiles along the SW and NE border.
* @return The length along the SW and NE borders.
* @post Return value is always positive.
*/
static uint32 GetMapSizeX();
/**
* Gets the amount of tiles along the SE and NW border.
* @return The length along the SE and NW borders.
* @post Return value is always positive.
*/
static uint32 GetMapSizeY();
/**
* Gets the place along the SW/NE border (X-value).
* @param tile The tile to get the X-value of.
* @pre IsValidTile(tile).
* @return The X-value.
* @post Return value is always lower than GetMapSizeX().
*/
static int32 GetTileX(TileIndex tile);
/**
* Gets the place along the SE/NW border (Y-value).
* @param tile The tile to get the Y-value of.
* @pre IsValidTile(tile).
* @return The Y-value.
* @post Return value is always lower than GetMapSizeY().
*/
static int32 GetTileY(TileIndex tile);
/**
* Gets the TileIndex given a x,y-coordinate.
* @param x The X coordinate.
* @param y The Y coordinate.
* @pre x < GetMapSizeX().
* @pre y < GetMapSizeY().
* @return The TileIndex for the given (x,y) coordinate.
*/
static TileIndex GetTileIndex(uint32 x, uint32 y);
/**
* Calculates the Manhattan distance; the difference of
* the X and Y added together.
* @param tile_from The start tile.
* @param tile_to The destination tile.
* @pre IsValidTile(tile_from).
* @pre IsValidTile(tile_to).
* @return The Manhattan distance between the tiles.
*/
static int32 DistanceManhattan(TileIndex tile_from, TileIndex tile_to);
/**
* Calculates the distance between two tiles via 1D calculation.
* This means the distance between X or the distance between Y, depending
* on which one is bigger.
* @param tile_from The start tile.
* @param tile_to The destination tile.
* @pre IsValidTile(tile_from).
* @pre IsValidTile(tile_to).
* @return The maximum distance between the tiles.
*/
static int32 DistanceMax(TileIndex tile_from, TileIndex tile_to);
/**
* The squared distance between the two tiles.
* This is the distance is the length of the shortest straight line
* between both points.
* @param tile_from The start tile.
* @param tile_to The destination tile.
* @pre IsValidTile(tile_from).
* @pre IsValidTile(tile_to).
* @return The squared distance between the tiles.
*/
static int32 DistanceSquare(TileIndex tile_from, TileIndex tile_to);
/**
* Calculates the shortest distance to the edge.
* @param tile From where the distance has to be calculated.
* @pre IsValidTile(tile).
* @return The distances to the closest edge.
*/
static int32 DistanceFromEdge(TileIndex tile);
};
#endif /* AI_MAP_HPP */
|
