mirror of https://github.com/OpenTTD/OpenTTD.git
(svn r3699) Replace some magic numbers for checking for a suitable slope for a level crossing by some less magic numbers
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3fc68907e3
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15
road_cmd.c
15
road_cmd.c
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@ -261,7 +261,7 @@ return_error:;
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}
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static const RoadBits _valid_tileh_slopes_road[3][15] = {
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static const RoadBits _valid_tileh_slopes_road[][15] = {
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// set of normal ones
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{
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ROAD_ALL, 0, 0,
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@ -291,14 +291,6 @@ static const RoadBits _valid_tileh_slopes_road[3][15] = {
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ROAD_ALL,
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ROAD_ALL
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},
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// valid railway crossings on slopes
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{
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1, 0, 0, // 0, 1, 2
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0, 0, 1, // 3, 4, 5
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0, 1, 0, // 6, 7, 8
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0, 1, 1, // 9, 10, 11
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0, 1, 1, // 12, 13, 14
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}
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};
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@ -383,9 +375,12 @@ int32 CmdBuildRoad(int x, int y, uint32 flags, uint32 p1, uint32 p2)
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return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
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}
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if (!_valid_tileh_slopes_road[2][ti.tileh]) { // prevent certain slopes
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#define M(x) (1 << (x))
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/* Level crossings may only be built on these slopes */
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if (!HASBIT(M(14) | M(13) | M(11) | M(10) | M(7) | M(5) | M(0), ti.tileh)) {
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return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
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}
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#undef M
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if (ti.map5 == 2) {
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if (pieces & ROAD_Y) goto do_clear;
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