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(svn r3791) Replace home grown direction handling for placing lighthouses by standard DiagDir

release/0.5
tron 2006-03-08 12:26:56 +00:00
parent e68120034c
commit 9b53fb9e03
1 changed files with 16 additions and 16 deletions
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32
unmovable_cmd.c
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@ -308,12 +308,6 @@ static void ClickTile_Unmovable(TileIndex tile)
} }
} }
static const TileIndexDiffC _tile_add[] = {
{ 1, 0},
{ 0, 1},
{-1, 0},
{ 0, -1}
};
/* checks, if a radio tower is within a 9x9 tile square around tile */ /* checks, if a radio tower is within a 9x9 tile square around tile */
static bool checkRadioTowerNearby(TileIndex tile) static bool checkRadioTowerNearby(TileIndex tile)
@ -332,9 +326,9 @@ void GenerateUnmovables(void)
{ {
int i,j; int i,j;
TileIndex tile; TileIndex tile;
uint32 r;
int dir;
uint h; uint h;
uint maxx;
uint maxy;
if (_opt.landscape == LT_CANDY) return; if (_opt.landscape == LT_CANDY) return;
@ -356,20 +350,26 @@ void GenerateUnmovables(void)
/* add lighthouses */ /* add lighthouses */
i = ScaleByMapSize1D((Random() & 3) + 7); i = ScaleByMapSize1D((Random() & 3) + 7);
maxx = MapMaxX();
maxy = MapMaxY();
do { do {
uint32 r;
DiagDirection dir;
restart: restart:
r = Random(); r = Random();
dir = r >> 30; dir = GB(r, 30, 2);
r %= (dir == 0 || dir == 2) ? MapMaxY() : MapMaxX(); switch (dir) {
tile = default:
(dir == 0) ? TileXY(0, r) : 0 + // left case DIAGDIR_NE: tile = TileXY(maxx, r % maxy); break;
(dir == 1) ? TileXY(r, 0) : 0 + // top case DIAGDIR_SE: tile = TileXY(r % maxx, 0); break;
(dir == 2) ? TileXY(MapMaxX(), r) : 0 + // right case DIAGDIR_SW: tile = TileXY(0, r % maxy); break;
(dir == 3) ? TileXY(r, MapMaxY()) : 0; // bottom case DIAGDIR_NW: tile = TileXY(r % maxx, maxy); break;
}
j = 20; j = 20;
do { do {
if (--j == 0) goto restart; if (--j == 0) goto restart;
tile = TILE_MASK(tile + ToTileIndexDiff(_tile_add[dir])); tile = TILE_MASK(tile + TileOffsByDir(dir));
} while (!(IsTileType(tile, MP_CLEAR) && GetTileSlope(tile, &h) == 0 && h <= 16)); } while (!(IsTileType(tile, MP_CLEAR) && GetTileSlope(tile, &h) == 0 && h <= 16));
assert(tile == TILE_MASK(tile)); assert(tile == TILE_MASK(tile));