OpenTTD
autorail.h
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1 /* $Id: autorail.h 17248 2009-08-21 20:21:05Z rubidium $ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * 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.
6  * 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.
7  * 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/>.
8  */
9 
12 /* Rail selection types (directions):
13  * / \ / \ / \ / \ / \ / \
14  * / /\ /\ \ /===\ / \ /| \ / |\
15  * \/ / \ \/ \ / \===/ \| / \ |/
16  * \ / \ / \ / \ / \ / \ /
17  * 0 1 2 3 4 5
18  */
19 
20 /* mark invalid tiles red */
21 #define RED(c) -c
22 
23 /* table maps each of the six rail directions and tileh combinations to a sprite
24  * invalid entries are required to make sure that this array can be quickly accessed */
25 static const int _AutorailTilehSprite[][6] = {
26 /* type 0 1 2 3 4 5 */
27  { 0, 8, 16, 25, 34, 42 }, // tileh = 0
28  { 5, 13, RED(22), RED(31), 35, 42 }, // tileh = 1
29  { 5, 10, 16, 26, RED(38), RED(46) }, // tileh = 2
30  { 5, 9, RED(23), 26, 35, RED(46) }, // tileh = 3
31  { 2, 10, RED(19), RED(28), 34, 43 }, // tileh = 4
32  { 1, 9, 17, 26, 35, 43 }, // tileh = 5
33  { 1, 10, RED(20), 26, RED(38), 43 }, // tileh = 6
34  { 1, 9, 17, 26, 35, 43 }, // tileh = 7
35  { 2, 13, 17, 25, RED(40), RED(48) }, // tileh = 8
36  { 1, 13, 17, RED(32), 35, RED(48) }, // tileh = 9
37  { 1, 9, 17, 26, 35, 43 }, // tileh = 10
38  { 1, 9, 17, 26, 35, 43 }, // tileh = 11
39  { 2, 9, 17, RED(29), RED(40), 43 }, // tileh = 12
40  { 1, 9, 17, 26, 35, 43 }, // tileh = 13
41  { 1, 9, 17, 26, 35, 43 }, // tileh = 14
42  { 0, 1, 2, 3, 4, 5 }, // invalid (15)
43  { 0, 1, 2, 3, 4, 5 }, // invalid (16)
44  { 0, 1, 2, 3, 4, 5 }, // invalid (17)
45  { 0, 1, 2, 3, 4, 5 }, // invalid (18)
46  { 0, 1, 2, 3, 4, 5 }, // invalid (19)
47  { 0, 1, 2, 3, 4, 5 }, // invalid (20)
48  { 0, 1, 2, 3, 4, 5 }, // invalid (21)
49  { 0, 1, 2, 3, 4, 5 }, // invalid (22)
50  { 6, 11, 17, 27, RED(39), RED(47) }, // tileh = 23
51  { 0, 1, 2, 3, 4, 5 }, // invalid (24)
52  { 0, 1, 2, 3, 4, 5 }, // invalid (25)
53  { 0, 1, 2, 3, 4, 5 }, // invalid (26)
54  { 7, 15, RED(24), RED(33), 36, 44 }, // tileh = 27
55  { 0, 1, 2, 3, 4, 5 }, // invalid (28)
56  { 3, 14, 18, 26, RED(41), RED(49) }, // tileh = 29
57  { 4, 12, RED(21), RED(30), 37, 45 } // tileh = 30
58 };
59 #undef RED
60 
61 
62 /* maps each pixel of a tile (16x16) to a selection type
63  * (0,0) is the top corner, (16,16) the bottom corner */
64 static const HighLightStyle _autorail_piece[][16] = {
81 };