aaf09ceb26
When using the autorail tool, the rail pieces which are going to be build are highlighted. If a piece is shown in red, this indicates that the slope/rail combination is impossible. It does not tell you if the rail line construction might not be possible because of other obstacles, e.g. houses or water.
71 lines
3.8 KiB
C
71 lines
3.8 KiB
C
/* Rail selection types (directions):
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/ \ / \ / \ / \ / \ / \
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/ /\ /\ \ /===\ / \ /| \ / |\
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\/ / \ \/ \ / \===/ \| / \ |/
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\ / \ / \ / \ / \ / \ /
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0 1 2 3 4 5
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*/
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// mark invalid tiles red
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#define RED(c) c | PALETTE_SEL_TILE_RED
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// table maps each of the six rail directions and tileh combinations to a sprite
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// invalid entries are required to make sure that this array can be quickly accessed
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const int AutorailTilehSprite[31][6] = {
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// type 0 1 2 3 4 5
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{ 0, 8, 16, 25, 34, 42 }, // tileh = 0
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{ 5, 13, RED(22), RED(31), 35, 42 }, // tileh = 1
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{ 5, 10, 16, 26, RED(38), RED(46) }, // tileh = 2
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{ 5, 9, RED(23), 26, 35, RED(46) }, // tileh = 3
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{ 2, 10, RED(19), RED(28), 34, 43 }, // tileh = 4
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{ 1, 9, 17, 26, 35, 43 }, // tileh = 5
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{ 1, 10, RED(20), 26, RED(38), 43 }, // tileh = 6
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{ 1, 9, 17, 26, 35, 43 }, // tileh = 7
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{ 2, 13, 17, 25, RED(40), RED(48) }, // tileh = 8
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{ 1, 13, 17, RED(32), 35, RED(48) }, // tileh = 9
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{ 2, 9, 17, 26, 35, 43 }, // tileh = 10
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{ 1, 9, 17, 26, 35, 43 }, // tileh = 11
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{ 2, 9, 17, RED(29), RED(40), 43 }, // tileh = 12
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{ 1, 9, 17, 26, 35, 43 }, // tileh = 13
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{ 1, 9, 17, 26, 35, 43 }, // tileh = 14
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{ 0, 1, 2, 3, 4, 5 }, // invalid (15)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (16)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (17)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (18)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (19)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (20)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (21)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (22)
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{ RED(6), RED(11), RED(17), RED(27), RED(39), RED(47) }, // tileh = 23
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{ 0, 1, 2, 3, 4, 5 }, // invalid (24)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (25)
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{ 0, 1, 2, 3, 4, 5 }, // invalid (26)
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{ RED(7), RED(15), RED(24), RED(33), RED(36), RED(44) }, // tileh = 27
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{ 0, 1, 2, 3, 4, 5 }, // invalid (28)
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{ RED(3), RED(14), RED(18), RED(26), RED(41), RED(49) }, // tileh = 29
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{ RED(4), RED(12), RED(21), RED(30), RED(37), RED(45) }, // tileh = 30
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};
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#undef RED
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// maps each pixel of a tile (16x16) to a selection type
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// (0,0) is the top corner, (16,16) the bottom corner
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const int AutorailPiece[16][16] = {
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 5, 5, 5, 5, 5, 5 },
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{ 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 },
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{ 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1 },
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{ 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1 },
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{ 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 },
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{ 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3 }
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};
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